upgrade to HSR?
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Re: upgrade to HSR?
Formula_novice, we all pretty much have the same throttle bracket issue unless you use a Holley TB. I use a BBK 58mm and actually made a 3/4" aluminum spacer to go in between the TB and upper intake. Nothing excpet a block of aluminum but I figure in the future I can drill / tap it for nitrous, or machine the needed details for an extra injector or two when I'm back to being supercharged.
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Re: upgrade to HSR?
Thanks for the input guys! I will work on it tomorrow evening and let you know how it turns out. I'm hoping to have it running this weekend
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Re: upgrade to HSR?
Hi Guys!
I got the car running tonight and so far it sounds awesome! But I have a problem... i unpugged the vacuum line from the AFPR and, according to my guage, I have 22 PSI at the rails??? I then tried to adjust it and it went up to around 30 PSI. I tried to tighten it some more but it dropped down to 20-ish again???
Do you think my pressure guage is messed up? Or does this sound like a bad AFPR? I haven't driven it yet but the engine seems to idle ok.
Thanks!
I got the car running tonight and so far it sounds awesome! But I have a problem... i unpugged the vacuum line from the AFPR and, according to my guage, I have 22 PSI at the rails??? I then tried to adjust it and it went up to around 30 PSI. I tried to tighten it some more but it dropped down to 20-ish again???
Do you think my pressure guage is messed up? Or does this sound like a bad AFPR? I haven't driven it yet but the engine seems to idle ok.
Thanks!
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Re: upgrade to HSR?
Sounds like a bad regulator if its adjusting and pressure is all over the place. Not sure why it would be a bad regulator tho since its brand new from the kit.
New rails/lines etc try keep priming the system and let it fill up with fuel. Could be air in the lines? But I'm not sure.
New rails/lines etc try keep priming the system and let it fill up with fuel. Could be air in the lines? But I'm not sure.
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Re: upgrade to HSR?
Thanks Orr89RocZ! I will hook the vacuum line back up tomorrow and maybe take it around the block for a spin and see how it runs.
Man, adjusting that Holley AFPR is a PITA! It's tough to get at the thing to unhook the vacuum line and then I about baked while using a long screwdriver to adjust it!
I guess no one said it would be easy
Man, adjusting that Holley AFPR is a PITA! It's tough to get at the thing to unhook the vacuum line and then I about baked while using a long screwdriver to adjust it!
I guess no one said it would be easy
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Re: upgrade to HSR?
Sounds like a possible bad unit. Not having a second unit to try out quickly though isn't doing you any favors nailing down the real issue. There's the "urban legends" of these AFPR failing right out of the box and thats when guys go with the Kirban or Kerban (spelling?) fuel pressure units. Hope you get it squared away, DON'T drive that car with the FP that low though. Only bad things will result. Hope you get it straightened out soon.
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Re: upgrade to HSR?
the 3 sets of pictures I posted showed 2 with the vacuum facing the pass side (how mine is) and 1 showing it facing the drivers side (I told my friend to mount it that way so that you can adjust it easier).
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Re: upgrade to HSR?
Thanks for the info guys! Is the Kirban AFPR a direct swap? Or do you need different fittings, etc?
Thanks Zepher! I see the benefit of mounting it toward the driver side When I take mine off, I will face it this way.
Thanks Zepher! I see the benefit of mounting it toward the driver side When I take mine off, I will face it this way.
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Re: upgrade to HSR?
Good news! I contacted Summit and they looked up the AFPR part number and are shipping me a new one on Monday. They are even having UPS pickup my old one for free!
I just hope the new one works If it doesn't, I'm definately going with the Kirban.
Thanks!
I just hope the new one works If it doesn't, I'm definately going with the Kirban.
Thanks!
#62
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Re: upgrade to HSR?
I also got a bad AFPR right out of the box. My new one is holding up so far.
Last edited by IROCThe5.7L; 07-11-2009 at 05:55 PM.
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Re: upgrade to HSR?
Hi Guys!
I got the car running tonight and so far it sounds awesome! But I have a problem... i unpugged the vacuum line from the AFPR and, according to my guage, I have 22 PSI at the rails??? I then tried to adjust it and it went up to around 30 PSI. I tried to tighten it some more but it dropped down to 20-ish again???
Do you think my pressure guage is messed up? Or does this sound like a bad AFPR? I haven't driven it yet but the engine seems to idle ok.
Thanks!
I got the car running tonight and so far it sounds awesome! But I have a problem... i unpugged the vacuum line from the AFPR and, according to my guage, I have 22 PSI at the rails??? I then tried to adjust it and it went up to around 30 PSI. I tried to tighten it some more but it dropped down to 20-ish again???
Do you think my pressure guage is messed up? Or does this sound like a bad AFPR? I haven't driven it yet but the engine seems to idle ok.
Thanks!
And yea, its a direct fit.
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Re: upgrade to HSR?
Well guys, you were all right...
I got my new AFPR today and installed it. Fuel pressure out of the box was 46psi. I went ahead and bumped it to 48psi. I turned the car off and a few min later fired it back up. The fuel pressure (with the vacuum still unplugged) was 44psi??? I then bumped it to 45 psi and noticed it would sometimes be 45 and other times 44psi. So I have a "better" but unreliable replacement Holley AFPR.
I'm planning on ordering the Kirban unit this week and hopefully that will take care of the problem.
Thanks!
I got my new AFPR today and installed it. Fuel pressure out of the box was 46psi. I went ahead and bumped it to 48psi. I turned the car off and a few min later fired it back up. The fuel pressure (with the vacuum still unplugged) was 44psi??? I then bumped it to 45 psi and noticed it would sometimes be 45 and other times 44psi. So I have a "better" but unreliable replacement Holley AFPR.
I'm planning on ordering the Kirban unit this week and hopefully that will take care of the problem.
Thanks!
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Re: upgrade to HSR?
Glad you got it replaced. I have a Holley stock style TPI AFPR that I used with my last intake setup. That thing was a piece of SHlT!!! 1 word for us HSR owner, Kirban.
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Re: upgrade to HSR?
I agree with AC. I just ordered a Kirban unit and look forward to getting it bolted on.
My currend (and second) Holley AFPR won't go higher than 46psi and, as I mentioned above, the pressure is inconsistent.
Thanks!
My currend (and second) Holley AFPR won't go higher than 46psi and, as I mentioned above, the pressure is inconsistent.
Thanks!
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Re: upgrade to HSR?
Good news! My Kirban AFPR showed up today. Got it installed and the fuel pressure is holding perfectly! I also mounted the adjustment screw facing the fender (as recommended above) and it is way easier to adjust now.
I'm still working on getting it to idle... seems to want to surge a bit but I will keep playing with it.
Right now, I have my fuel pressure set at 47psi. I know this is a pretty good pressure for a TPI setup, but what does everyone recommend for a HSR? I spoke with a local guy about this and he said he runs 43psi on his HSR. Any opinions?
Thanks again for all the help!
I'm still working on getting it to idle... seems to want to surge a bit but I will keep playing with it.
Right now, I have my fuel pressure set at 47psi. I know this is a pretty good pressure for a TPI setup, but what does everyone recommend for a HSR? I spoke with a local guy about this and he said he runs 43psi on his HSR. Any opinions?
Thanks again for all the help!
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Re: upgrade to HSR?
The problem I'm having with my stock HSR non adjustable FPR is the pressure isn't above 42psi. I'm running 60# injectors and even though I can tune more fuel in the RPMS / KPa I need under boost I still don't want to jack the duty cycle of the injectors like said. Looks like a damn Kirban is in my future soon too now. HSR has 1300 miles on it.
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Re: upgrade to HSR?
As far as torque loss... I didn't notice any going from TPI. From Big Mouth it'd be the same. Ran 3.27 gears with stock torque converter and all. Now running 3.70's with a TKO trans and it's a ball to drive. Torque loss (if any) is no big deal when you can spin the tires on the street so easilly.
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Re: upgrade to HSR?
Hi Guys,
Just a quick update...
I'm still trying to perfect my idle... it's got about a 150rpm surge. A friend told me that it might be play in the throttle body blades? So, I'm thinking about ordering a Summit 52mm throttle body.
I also dropped the fuel pressure down from about 48 to 45 last night and plan on taking it out soon to see if it helped.
Not trying to get off topic but I'm starting to think my XFI-268 cam is a bit on the small side for the HSR. Maybe I should go with a XFI-280?
Thanks!
Just a quick update...
I'm still trying to perfect my idle... it's got about a 150rpm surge. A friend told me that it might be play in the throttle body blades? So, I'm thinking about ordering a Summit 52mm throttle body.
I also dropped the fuel pressure down from about 48 to 45 last night and plan on taking it out soon to see if it helped.
Not trying to get off topic but I'm starting to think my XFI-268 cam is a bit on the small side for the HSR. Maybe I should go with a XFI-280?
Thanks!
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Re: upgrade to HSR?
Hi Guys,
Just a quick update...
I'm still trying to perfect my idle... it's got about a 150rpm surge. A friend told me that it might be play in the throttle body blades? So, I'm thinking about ordering a Summit 52mm throttle body.
I also dropped the fuel pressure down from about 48 to 45 last night and plan on taking it out soon to see if it helped.
Not trying to get off topic but I'm starting to think my XFI-268 cam is a bit on the small side for the HSR. Maybe I should go with a XFI-280?
Thanks!
Just a quick update...
I'm still trying to perfect my idle... it's got about a 150rpm surge. A friend told me that it might be play in the throttle body blades? So, I'm thinking about ordering a Summit 52mm throttle body.
I also dropped the fuel pressure down from about 48 to 45 last night and plan on taking it out soon to see if it helped.
Not trying to get off topic but I'm starting to think my XFI-268 cam is a bit on the small side for the HSR. Maybe I should go with a XFI-280?
Thanks!
I run 45 PSI on my fuel pressure at WOT.
Cam. I don't remember the part number but I'm running a CC 212/280 cam (264 advertised duration) which is just about what you have. Idles great at 750 RPM with a little lope. I think it is a perfect match for the L98 with HSR. You certianly go hotter with the cam but your idle won't get better- only worse.
Forgive me if I missed something in this thread but are you tuning your own program? My HSR did OK with the stock prom but I didn't get great drivability, idle and power til I started tuning. It's a must!
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Re: upgrade to HSR?
When you say at WOT, how are you setting it to 45 PSI? With vacuum? The only way I know how to set mine is with the vacuum disconnected from the FPR and car idling.
I have a chip TPIS custom burned for me to match my Bigmouth/long tube setup with the same heads, cam, etc. So far, its running ok. I won't argue that it could use a little tweaking.
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Re: upgrade to HSR?
When you say at WOT, how are you setting it to 45 PSI? With vacuum? The only way I know how to set mine is with the vacuum disconnected from the FPR and car idling.
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Re: upgrade to HSR?
Your problem with the Distributor not going all the way down is simple. The oil pump driveshaft needs to be moved, use a screw driver and turn it in the direction, that the rotor in the distributor is facing the Number 1 post on the cap, then set your timing, and you'll be good.
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Re: upgrade to HSR?
may need to tweak idle fueling via prom changes to get that thing to stabilize at idle. Need to set desired idle speed in chip, and then reset IAC sensor and adjust TB idle screw til the IAC counts are really low at idle, like below 20 counts is pretty good. That, along with the fueling/timing changes will tame idle down
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Re: upgrade to HSR?
Thanks Orr89RocZ! Sorry for getting back to you guys so late.
I took the car out this weekend and tweaked it a bit... the car seemed sluggish so I bumped the TPS sensor (at idle) to .60 and it seemed help. After that I played with the base timing and ran the motor at both 8 and 10*. Although there wasn't a huge difference, it seemed to run better at 8*.
I also put on a new Magnaflow catback this weekend but really didn't notice much difference in the "butt dyno".
I'm hoping to talk to TPIS this week about adjusting my chip and also order a 52mm throttle body.
I think my combo is pretty decent but it just doesn't seem to pull as hard as I would've thought. Anyone have any suggestions on what else to check/change?
FYI - I'm running 45PSI on the Kirban AFPR.
Thanks guys!
I took the car out this weekend and tweaked it a bit... the car seemed sluggish so I bumped the TPS sensor (at idle) to .60 and it seemed help. After that I played with the base timing and ran the motor at both 8 and 10*. Although there wasn't a huge difference, it seemed to run better at 8*.
I also put on a new Magnaflow catback this weekend but really didn't notice much difference in the "butt dyno".
I'm hoping to talk to TPIS this week about adjusting my chip and also order a 52mm throttle body.
I think my combo is pretty decent but it just doesn't seem to pull as hard as I would've thought. Anyone have any suggestions on what else to check/change?
FYI - I'm running 45PSI on the Kirban AFPR.
Thanks guys!
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Re: upgrade to HSR?
The HSR intake is great, but you need to be more in the upper rpm range. It's basically just like a dual quad intake for carbs, but for fuel injection. A stock TB is fine with a 350, u don't need to go bigger unless your forced induction, run nitrous or have more cubes, it will cost you horsepower and will be more lazy.
In GM high tech, these guys found the best timing to be 14* base timing, along with 38 PSI going to 24* SVO injectors, I am running the same injectors and timing, it runs great. Along with my 2400 stall, the old modified TPI intake, on the footbrake, would stall out at 1500 RPM, or 1350 with the stock converter. Now with the HSR, it stalls at around 1700-1750 RPM, Now I am going to put in a 3000 stall from midwest torque converters, and this thing will really scream. When you hit 3500 or higher, the motor screams, and sounds so great.
Check out my install, I'm going to try to adjust the timing a little and see how it runs. I also installed thinner head gaskets, for more compression, also making the car more responsive and make some more power, it cools great, I barely use the fans, unless I'm idling a lot.
I'm at www.cardomain.com/ride/471099
In GM high tech, these guys found the best timing to be 14* base timing, along with 38 PSI going to 24* SVO injectors, I am running the same injectors and timing, it runs great. Along with my 2400 stall, the old modified TPI intake, on the footbrake, would stall out at 1500 RPM, or 1350 with the stock converter. Now with the HSR, it stalls at around 1700-1750 RPM, Now I am going to put in a 3000 stall from midwest torque converters, and this thing will really scream. When you hit 3500 or higher, the motor screams, and sounds so great.
Check out my install, I'm going to try to adjust the timing a little and see how it runs. I also installed thinner head gaskets, for more compression, also making the car more responsive and make some more power, it cools great, I barely use the fans, unless I'm idling a lot.
I'm at www.cardomain.com/ride/471099
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Re: upgrade to HSR?
Thanks for the info cronsformula350!
I did a search on google and I think this is the article you are referring to...
http://www.gmhightechperformance.com...roc/index.html
I dropped my fuel pressure to 40psi yesterday and took the car out for a drive. It seemed to idle a little better (minimal surging) but it shuttered a bit at stoplights.
This was still at 8* timing. When I was playing around with the timing last weekend, I did have it at 12* for a few minutes but the car seemed to shutter some, so I went back down to 8*.
Also at 40psi, my block learn seemed better running between 118-131 at part-throttle. I'm going to contact TPIS today, tell them my results, and have them reburn my chip.
Thanks again!
I did a search on google and I think this is the article you are referring to...
http://www.gmhightechperformance.com...roc/index.html
I dropped my fuel pressure to 40psi yesterday and took the car out for a drive. It seemed to idle a little better (minimal surging) but it shuttered a bit at stoplights.
This was still at 8* timing. When I was playing around with the timing last weekend, I did have it at 12* for a few minutes but the car seemed to shutter some, so I went back down to 8*.
Also at 40psi, my block learn seemed better running between 118-131 at part-throttle. I'm going to contact TPIS today, tell them my results, and have them reburn my chip.
Thanks again!
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Re: upgrade to HSR?
you can throw as much base timing as you want but until the chip has been set to change the computer does whatever it wants after that wire is hooked back up... If you have trouble with tpis...look into Ed Wright chips, that article shows you how good of a swap the stealth ram is look at how much they gained just from an intake swap!!! It makes you relize how much of a cork the TPI intake really is!! And as far as needing to be in the upper rpm range... I have an insane amount of lowend torque!! And i have spun my engine past 7 grand (not on purpose) but it just kept pulling with the stealth ram..no corking effect what so ever!!
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Re: upgrade to HSR?
Base timing is added into the spark table in the chip, but if you have chip set at 6 degree base timing and your actually at 10 degrees base, your getting 4 degrees more spark at every operating point in the spark table.
Your gonna have to play with the motor/tune to see what it likes. My car liked 8 degree base timing when i didnt have tuning stuff. I later changed the tables to allow that extra few degrees of advance and brought max timing at WOT in sooner...at 3000 rpm i had full timing. Stock tables can be as much as 4-5 degrees lower at those mid range rpms so your losing midrange power there. Just like a carb setup, set max timing to come in at 3000 or so rpm and you'll pick up power. 34-36 degrees at max seemed to work best for me on both my stock L98 and my 383.
Your gonna have to play with the motor/tune to see what it likes. My car liked 8 degree base timing when i didnt have tuning stuff. I later changed the tables to allow that extra few degrees of advance and brought max timing at WOT in sooner...at 3000 rpm i had full timing. Stock tables can be as much as 4-5 degrees lower at those mid range rpms so your losing midrange power there. Just like a carb setup, set max timing to come in at 3000 or so rpm and you'll pick up power. 34-36 degrees at max seemed to work best for me on both my stock L98 and my 383.
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Re: upgrade to HSR?
The stock timing tables in the eprom, will still be run regardless of what your base timing is. However, if you run 8* timing, the computer still puts in its amount of timing, if you run 14* or 17*, it will base the timing off that mark.
Depending on how much advance and timing you run, especially base timging, the motor can make more torque, be more responsive or have a negative effect on things, thats why you need to try diff timing.
The car changes the timing, off what you have the base timing in, by the coolant temp sensor, and mostly the MAF or MAP sensor, it sees how much airs entering the engine, and the TPS and MAF/MAP are looking at the values, to see if the engines under load, if it is then it will bump the timing up.
Depending on how much advance and timing you run, especially base timging, the motor can make more torque, be more responsive or have a negative effect on things, thats why you need to try diff timing.
The car changes the timing, off what you have the base timing in, by the coolant temp sensor, and mostly the MAF or MAP sensor, it sees how much airs entering the engine, and the TPS and MAF/MAP are looking at the values, to see if the engines under load, if it is then it will bump the timing up.
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Re: upgrade to HSR?
Hi Guys,
Just a quick update... Got my chip back and installed. Had it reburned at TPIS. Took the car for a drive and the block learn is much better (between 120-131).
Set the timing to 6* and the fuel pressure to 43psi per TPIS instructions. However it doesn't feel like there's much low end power, so I'm going to try bumping the timing up to 8 and 10* and see how it does.
Thanks again fro all the help!
Just a quick update... Got my chip back and installed. Had it reburned at TPIS. Took the car for a drive and the block learn is much better (between 120-131).
Set the timing to 6* and the fuel pressure to 43psi per TPIS instructions. However it doesn't feel like there's much low end power, so I'm going to try bumping the timing up to 8 and 10* and see how it does.
Thanks again fro all the help!
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Car: 89 IROC
Engine: 6.8 HSR N2O
Transmission: TKO 600
Axle/Gears: 9" Moser 3.50 True trac
Re: upgrade to HSR?
Hi Guys,
Just a quick update... Got my chip back and installed. Had it reburned at TPIS. Took the car for a drive and the block learn is much better (between 120-131).
Set the timing to 6* and the fuel pressure to 43psi per TPIS instructions. However it doesn't feel like there's much low end power, so I'm going to try bumping the timing up to 8 and 10* and see how it does.
Thanks again fro all the help!
Just a quick update... Got my chip back and installed. Had it reburned at TPIS. Took the car for a drive and the block learn is much better (between 120-131).
Set the timing to 6* and the fuel pressure to 43psi per TPIS instructions. However it doesn't feel like there's much low end power, so I'm going to try bumping the timing up to 8 and 10* and see how it does.
Thanks again fro all the help!
#88
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Re: upgrade to HSR?
Thanks for the info antman89iroc!
I've read about guys having a HSR with great low-end grunt but mine just doesn't seem to have it. I'm not sure what I can do other than bump the timing or fuel pressure.
Any ideas of what could be causing the loss?
I've read about guys having a HSR with great low-end grunt but mine just doesn't seem to have it. I'm not sure what I can do other than bump the timing or fuel pressure.
Any ideas of what could be causing the loss?
#89
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Re: upgrade to HSR?
My setup is mis matched right now. I need a 2800-3000 stall, and gears. But right now I have the stock 1600 stall, and 2.77's. The car drives just like it did before. I can still light them up from a stop no problem. Makes me kind of feel the "TPI Torque" is kind of over rated.
#90
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Car: 89 Formula L98 power
Engine: '96 subaru, opposed 4banger
Transmission: TH700R4, subaru 4WD
Axle/Gears: 3.27, just works
Re: upgrade to HSR?
My setup is mis matched right now. I need a 2800-3000 stall, and gears. But right now I have the stock 1600 stall, and 2.77's. The car drives just like it did before. I can still light them up from a stop no problem. Makes me kind of feel the "TPI Torque" is kind of over rated.
On my ported TPI setup, on my 2400 B&M stall, with my TPI setup, it would stall out to about 1500, now with the HSR, it stalls out to about 1750ish depending on traction, and my rear suspension is completely done, with LCR's, lakewood control arms, and a boxed in panhard bar, and nitto 555r's! I'm also running longtube headers, true duals, advanced the cam to make more torque, have 1.6 roller rockers, and world sportsman II heads, so its setup to make more torque for a 350, check out my install.
www.cardomain.com/ride/471099
#91
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Car: 89 Formula L98 power
Engine: '96 subaru, opposed 4banger
Transmission: TH700R4, subaru 4WD
Axle/Gears: 3.27, just works
Re: upgrade to HSR?
A lot of you have had problems with your pressure regulator eh? Your using the adjustable one right? Because I barely ran mine for a few days and it was also leaking right away; but I didn't call holley right away, because they might not give me a replacement one; although I bought my HSR and fuel rail setup in july of 2005, and didn't use it till july of '09.
So you think I should call holley or summit and ask for a replacement?
So you think I should call holley or summit and ask for a replacement?
#92
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Re: upgrade to HSR?
A lot of you have had problems with your pressure regulator eh? Your using the adjustable one right? Because I barely ran mine for a few days and it was also leaking right away; but I didn't call holley right away, because they might not give me a replacement one; although I bought my HSR and fuel rail setup in july of 2005, and didn't use it till july of '09.
So you think I should call holley or summit and ask for a replacement?
So you think I should call holley or summit and ask for a replacement?
#93
Moderator
Re: upgrade to HSR?
I was told by "some", switching to the HSR is going to make me lose a lot of torque. I was also told by "some" that going with the AFR 195's over the 180's is going to make it sloppy driving around town.
And it all was not true (for me at least). I'm glad I asked here and went with the HSR and 195's. I feel as have just as much torque as before, and it actually will pull to 6000 rpms.
And it all was not true (for me at least). I'm glad I asked here and went with the HSR and 195's. I feel as have just as much torque as before, and it actually will pull to 6000 rpms.
Last edited by IROCThe5.7L; 08-29-2009 at 04:13 PM.
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Car: 89 IROC
Engine: 6.8 HSR N2O
Transmission: TKO 600
Axle/Gears: 9" Moser 3.50 True trac
Re: upgrade to HSR?
A lot of you have had problems with your pressure regulator eh? Your using the adjustable one right? Because I barely ran mine for a few days and it was also leaking right away; but I didn't call holley right away, because they might not give me a replacement one; although I bought my HSR and fuel rail setup in july of 2005, and didn't use it till july of '09.
So you think I should call holley or summit and ask for a replacement?
So you think I should call holley or summit and ask for a replacement?
#95
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Car: 86 Trans Am
Engine: 383
Transmission: Probuilt 700r4
Axle/Gears: 2.77 BW 9 Bolt
Re: upgrade to HSR?
I was told by "some", switching to the HSR is going to make me lose a lot of torque. I was also told by "some" that going with the AFR 195's over the 180's is going to make it sloppy driving around town.
And it all was not true (for me at least). I'm glad I asked here and went with the HSR and 195's. I feel as have just as much torque as before, and it actually will pull to 6000 rpms.
And it all was not true (for me at least). I'm glad I asked here and went with the HSR and 195's. I feel as have just as much torque as before, and it actually will pull to 6000 rpms.
i agree 100% on the 195's and wouldnt trade the HSR back for the TPI for the maybe 10ft lbs of tq i might be missing down low
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Car: 89 Formula L98 power
Engine: '96 subaru, opposed 4banger
Transmission: TH700R4, subaru 4WD
Axle/Gears: 3.27, just works
Re: upgrade to HSR?
I'll call holley and get a replacement regulator, thanks.
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Car: 1989 Firebird Formula 350
Engine: 5.7L, AFR, HSR, Paxton S/C
Axle/Gears: 3.73
Re: upgrade to HSR?
I am new to ThirdGen and also to installing HSR so bear with me. This thread has addressed many issues I have encountered with the HSR install so this is good. Something I need some help with though. I was trying to use the stock injectors which are the Bosch type #5235302 with the aluminum tip. The problem is that when I seat in the injectors top and bottom, the holes through the rails for the bolts do not match up with the holes on the intake. The rails need to go down another 2-3 mm. I was told stock injectors would work. Is this not correct? Do I need different injectors? I would have thought they would all be the same length as far as lining up the bolt holes are concerned.
Thanks for the help.
Thanks for the help.
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Car: 89 IROC
Engine: 6.8 HSR N2O
Transmission: TKO 600
Axle/Gears: 9" Moser 3.50 True trac
Re: upgrade to HSR?
I am new to ThirdGen and also to installing HSR so bear with me. This thread has addressed many issues I have encountered with the HSR install so this is good. Something I need some help with though. I was trying to use the stock injectors which are the Bosch type #5235302 with the aluminum tip. The problem is that when I seat in the injectors top and bottom, the holes through the rails for the bolts do not match up with the holes on the intake. The rails need to go down another 2-3 mm. I was told stock injectors would work. Is this not correct? Do I need different injectors? I would have thought they would all be the same length as far as lining up the bolt holes are concerned.
Thanks for the help.
Thanks for the help.
BTW the stock injectors are good for a pretty hot motor. I make over 250 WHP and run 8.40's 1/8 mile and 7.60's with a shot of N2O.
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Re: upgrade to HSR?
Hi Guys,
Just a quick update on my project. I moved the intake air temp sensor from under the HSR plenum to the back of the plenum. This seemed to help my idle some!
Also, I just bought a used, recently rebuilt, 700r4 with shift kit and am hoping to get it installed soon. This should help with some of my response issues cause my existing tranny is just sloppy.
Other than that, I'm still wanting to get the 52mm throttle body to get a bit more air into the motor... it's on the list
Thanks!
Just a quick update on my project. I moved the intake air temp sensor from under the HSR plenum to the back of the plenum. This seemed to help my idle some!
Also, I just bought a used, recently rebuilt, 700r4 with shift kit and am hoping to get it installed soon. This should help with some of my response issues cause my existing tranny is just sloppy.
Other than that, I'm still wanting to get the 52mm throttle body to get a bit more air into the motor... it's on the list
Thanks!
#100
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Re: upgrade to HSR?
Hi Guys,
Just a quick update on my project. I moved the intake air temp sensor from under the HSR plenum to the back of the plenum. This seemed to help my idle some!
Also, I just bought a used, recently rebuilt, 700r4 with shift kit and am hoping to get it installed soon. This should help with some of my response issues cause my existing tranny is just sloppy.
Other than that, I'm still wanting to get the 52mm throttle body to get a bit more air into the motor... it's on the list
Thanks!
Just a quick update on my project. I moved the intake air temp sensor from under the HSR plenum to the back of the plenum. This seemed to help my idle some!
Also, I just bought a used, recently rebuilt, 700r4 with shift kit and am hoping to get it installed soon. This should help with some of my response issues cause my existing tranny is just sloppy.
Other than that, I'm still wanting to get the 52mm throttle body to get a bit more air into the motor... it's on the list
Thanks!