Only making 5 psi with my F1, why?!
#51
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Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
Re: Only making 5 psi with my F1, why?!
tom86iroc: I have that bracket already. The small Alt one. I know it is helping a little.
gta324: Ok so I will start the search for what 12 rib tensioner I can get my hands on. Then post back. I will also see how much those ASSC braces cost.
I think I am on the right track to get the 12 rib 3.40" to not slip and be able to pull 13-15 psi.
I would really like to buy everything then do one teardown, mod the bracket, one build up and head back to the dyno for a final re-tune.
Thanks for all your help, I will post what I find on ebay.
gta324: Ok so I will start the search for what 12 rib tensioner I can get my hands on. Then post back. I will also see how much those ASSC braces cost.
I think I am on the right track to get the 12 rib 3.40" to not slip and be able to pull 13-15 psi.
I would really like to buy everything then do one teardown, mod the bracket, one build up and head back to the dyno for a final re-tune.
Thanks for all your help, I will post what I find on ebay.
#52
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Re: Only making 5 psi with my F1, why?!
OK, so I called sd concepts and they sound very competent. They make a spring loaded tensioner for ANYTHING. Regardless of what it is. Turns out they are near me in RI. I live in MA. They take the bracket add whatever they need to make the setup not slip. The only thing I would need to buy is the tensioner and their services. They will machine the old bracket and take care of all that. They think it will cost around $500. I think it is worth it.
What do you guys think?
I will be sending them pics of my motor today so they can give me a rough estimate. I am broke right now, (getting married in a year) but I think I can scrape up $500 if it means I can make the power I want this season.
What do you guys think?
I will be sending them pics of my motor today so they can give me a rough estimate. I am broke right now, (getting married in a year) but I think I can scrape up $500 if it means I can make the power I want this season.
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Car: GTA -89
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Re: Only making 5 psi with my F1, why?!
Like I wrote there are some cummings diesel that have a 12rib setup with a spring loaded tensioner.....In that case you should only have to drill a hole
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#54
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Re: Only making 5 psi with my F1, why?!
I ended up getting rid of the serpentine set up all together. I tried both a Vortech and Procharger. Both had bracket flex and belt slip issues. I now run a F-1a on a standard SBC bracket with a normal rotation water pump and separate alternator. 15lb of boost and no belt slip or bracket issue.
I think the serpentine setups just hang it too far out without much support. Below is a pic when I was doing mock up.
I think the serpentine setups just hang it too far out without much support. Below is a pic when I was doing mock up.
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Re: Only making 5 psi with my F1, why?!
So that's the Procharger SBC bracket?
And it fits in our cars?
And it fits in our cars?
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Re: Only making 5 psi with my F1, why?!
I am running a C&S, blow thru Carb setup. The only reason I bought this setup was to run a serpentine belt on my accessories. I hated v-belt run items I had before.
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Re: Only making 5 psi with my F1, why?!
That bracket will work for carb, TBI, TPI and Stealth Ram. It just gets rid of the serpentine set up and places everything closer to the motor. More strength and isn't as hard on the crank snout.
And yes it fits (just barely) in a 3rd gen. You can clock it pointing down to run to an intercooler, or towards the throttle body or carb. I run it up, connected to a Stealth ram.
And yes it fits (just barely) in a 3rd gen. You can clock it pointing down to run to an intercooler, or towards the throttle body or carb. I run it up, connected to a Stealth ram.
Last edited by gcpoland; 07-19-2012 at 07:20 PM.
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Re: Only making 5 psi with my F1, why?!
That's the set I have except I also have the bracket that mounts on the head to lower te supercharger down so it clears the hood.
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Re: Only making 5 psi with my F1, why?!
OK, so I just got off the phone with ASSC. Very nice guy. Clearly has a crap load of experience. The brackets can be had for $450 total. $180 for the upper and $100 for the lower. The remainder is the custom machining that is needed to be done to the bracket to accept the brackets. They are NOT simple bolt ons. The lower idler needs to be removed as well. He also told me that you SHOULD NEVER run a cog with a standard crank keyway. I wish I had planned ahead better. He says you need to run a hardened balancer with a double big block keyway cranks and a special support timing cover to make sure the cogs don't destroy the crank. He also said he tightened the 12 rib super tight using a 3 foot breaker bar and drove the car for 30K miles with no issues appart from the blower bearings wearing out a bit.
I think I will be sending him my bracket and $450 to get the work done.
On a side note the side attachment is on a threaded rod that allows you to flex the bracket forward and back by adjusting some nuts so that you can "dial in" who the brackets wants to be bent for the most stability. Very important for the cog guys.
When I do go to cog, this bracket will be coming with me and will be ready for the new crank. At least the first step will be taken care of.
Any thoughts?
I think I will be sending him my bracket and $450 to get the work done.
On a side note the side attachment is on a threaded rod that allows you to flex the bracket forward and back by adjusting some nuts so that you can "dial in" who the brackets wants to be bent for the most stability. Very important for the cog guys.
When I do go to cog, this bracket will be coming with me and will be ready for the new crank. At least the first step will be taken care of.
Any thoughts?
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Re: Only making 5 psi with my F1, why?!
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#65
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Re: Only making 5 psi with my F1, why?!
Damn, you are in mucher better shape than me. I will def do all the things you did for the next build, but for now I just need to get this damn 12 rib to not spin. Good luck with yours, looks like you are on the right track. I think I will take ASSC on his offer for $450 and get my main bracket to not flex. Then mess with pulley size to get belt wrap and tension.
Not much else I can do.
Seems like it won't cost that much either.
(getting married next year, and trying to buy a house)
(with a big garage
)
Not much else I can do.
Seems like it won't cost that much either.
(getting married next year, and trying to buy a house)
(with a big garage
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#70
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Re: Only making 5 psi with my F1, why?!
Pics of your brackets please!
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Re: Only making 5 psi with my F1, why?!
Dont know if you follow my thread, new bracket tested and it works really good!
15psi at 5000rpm so far
15psi at 5000rpm so far
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#72
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Re: Only making 5 psi with my F1, why?!
I do follow your thread, that's awesome. Just wish I could make something like that
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Re: Only making 5 psi with my F1, why?!
Last edited by SDCE; 08-24-2012 at 12:02 PM.
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Re: Only making 5 psi with my F1, why?!
What spark plugs do you guys think I should run? I have a Digital 6 plus box, BTM box, Blue MSD blaster coil and pro billet dizzy with MSD 8.5mm wires?
Also what if anything could I do to make this ignition better or is this sorta the top for a street car?
Also what if anything could I do to make this ignition better or is this sorta the top for a street car?
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Re: Only making 5 psi with my F1, why?!
Also, not to steal your thread, but I'm currently in the process of changing my pulley that came with my procharger (4.25) to (3.70). Which with the 4.25 pulley I made 10lbs of boost @ 6600, the new should hopefully get me up to 14-16lbs, hopefully the braces that I got from Larry @ ASSC work like they should.
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Re: Only making 5 psi with my F1, why?!
I have used Autolites 3923 now for years........
I see some pressure drop due to my IC, will logg some more to verify it, and then change IC just to compare.......
Right now I dont know if I ever will put on the 3.4" pulley....
I see some pressure drop due to my IC, will logg some more to verify it, and then change IC just to compare.......
Right now I dont know if I ever will put on the 3.4" pulley....
#77
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Re: Only making 5 psi with my F1, why?!
Ok, so I guess I will pick up some new plugs, maybe those 3923s and see if I can get my motor to fire and not backfire. Fingers crossed.
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