Single turbo 352 iroc 1000hp or bust the grand finale
#1253
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
the shop is presurized with filtered air , so open up a window or door on the side of the shop, and all the dirt/dust overspray goes away form the car and out of the shop , and no dust or dirt can be blown by wind into the shop
since the shop is also were my bitcoin farm is i have over 16kcfm of air being brought into the shop by the intake fans
#1254
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
m having trouble picking a new color , i dont want the same color i have now .
im thinking about
emerald metalic green
chamelon
candy apple blue
candy apple red
or gunmetal
copper pearl which is close to the gm sunburnt orange is also one final choice
im thinking about
emerald metalic green
chamelon
candy apple blue
candy apple red
or gunmetal
copper pearl which is close to the gm sunburnt orange is also one final choice
#1255
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
-- Joe
#1258
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
I do cheesecloth it between color coats, but usually crap falls in the first layer of clear.
At least I don't use a paint roller and rustoleum like most forum members.
-- Joe
#1259
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Originally Posted by project89
lol im not crazy enough to repaint it if the current paint was good
#1260
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
I thought you didn't clear it? So you did then, good. Make sure you clear it again next time around. What are you out for, a show car? I raced my GTA on the highway so much last year, the front bumper has so many scratches in the paint that I am not going to bother doing any show paint anymore because its not worth the effort with a driver, just Black, clear and polish. My cousin did give me an idea though with the paint to have some fun with, should be one hell of a good time on the highway if I decide to go through with it lol. Just need to drop another eight hundred on the 91-92 aero wing, can't find any used, so a new one from Hawks it is...
ill prolly keep it simple and go with a simple metalic this time around instead of a color changing pearl
#1263
Re: Single turbo 352 iroc 1000hp or bust the grand finale
For the Megashift it was a GPIO board. I don't think it was the assembly as much as the design of the circuit. There was some sort of parasitic harmonic that was being amplified. Lance seems to say there are "no issues" with it although I certainly got banned for asking about it.
I think the hardware work arounds are what make the docs so difficult. For instance, the try do the resistor pack hack (bad turn on/off times) or PWM for peak and hold injectors. Confuses everyone.
You have to be attentive to detail to read the Megasquirt documentation and build it out right. The Megashift documentation was just flat out wrong at spots, where I was having to change things so that it would work.
They try to add in jumper wires for different trigger source for crank and cams. Confuses everyone.
The hardware grounding scheme was suspect from the get go and caused a lot of problems. I think this is one of the biggest problems people have even today. I don't think it was thought out well enough for large coils with high dI/dT rates. Puts noise on all the inputs and "random" trigger errors, input errors, resets.
The VR ckt is always been flaky. Simple MAX9924-27 part would fix all that but I think they don't do it due to sourcing the part.
You have to be attentive to detail to read the Megasquirt documentation and build it out right. The Megashift documentation was just flat out wrong at spots, where I was having to change things so that it would work.
They try to add in jumper wires for different trigger source for crank and cams. Confuses everyone.
The hardware grounding scheme was suspect from the get go and caused a lot of problems. I think this is one of the biggest problems people have even today. I don't think it was thought out well enough for large coils with high dI/dT rates. Puts noise on all the inputs and "random" trigger errors, input errors, resets.
The VR ckt is always been flaky. Simple MAX9924-27 part would fix all that but I think they don't do it due to sourcing the part.
Noise is always a spectre in electronics, and has to be carefully managed. I could see the fact that some of the jumpers above
http://www.theturboforums.com/thread...uild-for-4L80E
www.theturboforums.com/threads/371628-Question-for-the-electrical-sorts?highlight=megashift
Quite frankly if I didn't have an early 4L80E which uses the different PWM frequency I would have been very inclined to sell the mess and go to an 0411 with HP Tuners.
#1272
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
i was kind of thinking that myself , but damn i miss having a street bike , i live in the perfect area for having a nice streetbike, i dont think i would enjoy a cruiser enough to justify buying one though
#1273
Re: Single turbo 352 iroc 1000hp or bust the grand finale
They are crazy fun, very easy to screw up and unforgiving when you do lol. I'm more of a street bike guy vs cruiser, long distances can be tough on a street bike. I still have my bike but the wife wont let me ride it, unfortunately my area is very urban so most people dont know how to drive, dont have valid licenses or dont have insurance which sucks.
#1274
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
unfortunatly i know this all to well , just last year i went down broke my collar bone in half + sepearated it from my shoulder + broke my foot and a couple fingers all at the same time.
over the years theres been a honda cbr 600 rr , ninja 1000, ninja 600 and a katana 600 , most didnt last long due to were i lived at the time with to many idiots on the road
#1275
Re: Single turbo 352 iroc 1000hp or bust the grand finale
unfortunatly i know this all to well , just last year i went down broke my collar bone in half + sepearated it from my shoulder + broke my foot and a couple fingers all at the same time.
over the years theres been a honda cbr 600 rr , ninja 1000, ninja 600 and a katana 600 , most didnt last long due to were i lived at the time with to many idiots on the road
over the years theres been a honda cbr 600 rr , ninja 1000, ninja 600 and a katana 600 , most didnt last long due to were i lived at the time with to many idiots on the road
Hmm CDR600 and ninja! My GSX 600 turbo is actually a katana 600. Very comfortable cruising street bike.
#1276
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Used to blast back and forth from Queens to Jersey when I lived in New York City with my old Hurricane 1000, would do 100+ over the Verrazano Bridge before all the work that is now being done to it, not to mention zip past everyone on the Belt Parkway. Looking and thinking back I honestly can't believe that I am still alive. You guys must suffer from the same nightmares that I did/do; blasting down the street on your bike with someone suddenly pulling out in front of you, bike hits the car and you go flying in the air for about a block. I usually wake up while still soaring and feeling like I am floating lol...
#1277
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
I don't mind a few off topic posts, but please try to keep the thread on topic or at least relating to the car build.
Unless you are putting a turbo on the bike, in which case I'll be happy to split those posts off into a new thread.
Thanks guys!
-- Joe
Unless you are putting a turbo on the bike, in which case I'll be happy to split those posts off into a new thread.
Thanks guys!
-- Joe
#1278
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
i took the car out again today lets just say i turned the boost up past what my map sensor can read , roughly 24 psi on vp114 still , and i swear i didnt stop smiling for hours, though i do belive its lifting the heads that high as i got some coolant sprayed out of the overflow.
but it was really friggen hot again
im happy as hell as ive been wanting to stress test the engine for a while now and im pretty sure 24 psi stressed the hell out of it
im actually really excited about my car once again so as soon as i can manage to pick up that ms from joe im taking the car to the track for sure
but it was really friggen hot again
im happy as hell as ive been wanting to stress test the engine for a while now and im pretty sure 24 psi stressed the hell out of it
im actually really excited about my car once again so as soon as i can manage to pick up that ms from joe im taking the car to the track for sure
#1279
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Very nice! das alot of boost. I dont remember what are you running for head fastners? If your running ARP studs your prob not gona get more clamping unless you upgrade the block/head for more head bolt holes. Maybe take timing down a few degrees.
#1280
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
yeah ive got arp head studs , but only running a composite gasket, so i could try switching to an mls if it is lifting the heads, but then again i dont plan on running it that high ( much), have to wait till we get past theese 95-105* days and see if it does it when its cooler out
im going to back it down slightly and see if i cant get some videos today when i get home from work
#1281
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
yup im pushing water , the head studs are tq'ed on the low end , thinking about mls or other gaskets ,....
suggestions
suggestions
#1282
Re: Single turbo 352 iroc 1000hp or bust the grand finale
That's about all you can do plus prob a few coats of copper coat. Nothing more you can do without more clamping force which means more bolts around the cylinders. I've heard the water/meth can help lower the cylinder pressure and then you wouldn't have to drop timing.
#1283
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
A felpro 1010 or 1003 gasket holds tons of cylinder pressure, as long as the deck is good and flat. If the block wasn't decked, who knows.
Either way, an external water leak shouldn't be caused by boost.
-- Joe
#1284
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Proper deck finish and mls will seal best but leave little room for error if tune is bad. Mls usually torches heads when they fail or lift.
Copper gasket oring setup is alittle more forgiving but also requires several retorques from what i read
I've never retorqued mls
Copper gasket oring setup is alittle more forgiving but also requires several retorques from what i read
I've never retorqued mls
#1285
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Proper deck finish and mls will seal best but leave little room for error if tune is bad. Mls usually torches heads when they fail or lift.
Copper gasket oring setup is alittle more forgiving but also requires several retorques from what i read
I've never retorqued mls
Copper gasket oring setup is alittle more forgiving but also requires several retorques from what i read
I've never retorqued mls
-- Joe
#1286
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Big hp guys love the copper with steel oring in block and receiver groove in head. Was debating on this for my new setup but am leaning towards mls since its simple and has been proven to work to my planned power. Just gotta watch the tune
#1287
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
I tried a cosmetic or cometic or whatever the hell they were called MLS back in 2008 or so, and it leaked coolant. When I called they told me I didn't spray both sides enough. wtf.
-- Joe
#1289
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Cometic told me to spray the crap outta it. It still leaked. $200+ gasket.
I've never had a problem with the permatorque, but I've seen plenty of pictures of the fire ring distorted.
For anything high performance I always have the block decked. Cheap insurance.
The other thing to consider is the finish on his heads. I know a lot of the early pro-comp heads needed to be kissed flat, perhaps that is part of the problem.
Still, I stick by my opinion that if boost caused this issue he has one or more dead cylinders now. I do NOT think the head was lifting, not with 17 bolts. But who knows.
-- Joe
#1291
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Originally Posted by anesthes
Cometic told me to spray the crap outta it. It still leaked. $200+ gasket.
Originally Posted by anesthes
I do NOT think the head was lifting...
#1292
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Ive run the permatorque and never had issues but that wasn't with boost. Stock 150k 5.3 on OEM 99 graphite gaskets with original tq to yeild bolts and at 10psi no issues yet. I'm planning to get refreshed heads since I can't get good graphite gaskets for my knotched heads and going to get non knotched heads which use MLS gaskets. GM stopped making graphite and MLS is now the stock replacement for all LS motors... so I'm forced to run them as a quality gasket. Same thing goes for the LS1 lifters which now are all discontinued... all forced to get LS7 lifters as stock replacement. MLS can't be that bad as all the LS guys run them with lots of boost. Heads lift the gasket isn't at fault, can't upgrade the fastners over ARP studs so then all you can do is get 6 bolt vs 5bolt heads or dial down boost/timing or figure out how to alleviate cylinder pressure
I bet the cheap heads have something to do with it.
I bet the cheap heads have something to do with it.
#1293
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
im going to take a look , im only running a composite with silicone bead gasket , i also didnt tq the head studs to the max tq i could have
theese heads have a damn thick deck on them id be really really surprised if it was the heads , but being they arent brand name heads u never know
its actualy fine until i really crank up the boost so maybe i just need to tq down the head studs a lil more
theese heads have a damn thick deck on them id be really really surprised if it was the heads , but being they arent brand name heads u never know
its actualy fine until i really crank up the boost so maybe i just need to tq down the head studs a lil more
Last edited by project89; 08-15-2016 at 01:43 PM.
#1294
Re: Single turbo 352 iroc 1000hp or bust the grand finale
im going to take a look , im only running a composite with silicone bead gasket , i also didnt tq the head studs to the max tq i could have
theese heads have a damn thick deck on them id be really really surprised if it was the heads , but being they arent brand name heads u never know
its actualy fine until i really crank up the boost so maybe i just need to tq down the head studs a lil more
theese heads have a damn thick deck on them id be really really surprised if it was the heads , but being they arent brand name heads u never know
its actualy fine until i really crank up the boost so maybe i just need to tq down the head studs a lil more
I was only referring to the head brand... quality might not be the same as other 5/8" deck thickness say from edelbrock or brodix etc.
I would def swap the gaskets out and crank them down TIGHT! Man those pistons are close to each other. Barely any gasket between eachother (assuming its bored out)
#1296
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Single turbo 352 iroc 1000hp or bust the grand finale
2 dead cyls , but just plugs again the autolight racing plugs r friggen garbage this is set number 3 ive had plugs die on me so im switching to ngk's
ive got some lowering springs comming 2.25inch drop, hope i can still get it in and out of my driveway after lol
ive got some lowering springs comming 2.25inch drop, hope i can still get it in and out of my driveway after lol
#1299
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Single turbo 352 iroc 1000hp or bust the grand finale
Project89: What is your injector firing strategy? 2 per cycle?
-- Joe