and so it starts
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
lol when u read this and see what pump i got ull see why i said that
holley 12-1800 pump shipped today for those of u that dont know this is a self contained dual pump setup , best part is i dont have to sump the fuel tank , i just need to figure out how to get the pump inside the tank lol
then pop a 10an bulkhead in the top of the tank for the feed
still need to purchase a bunch of line but u cant decide on if i want solid lines or just do steel braided
fuel rails are being upgraded to -10's i want absolutly no restriction anywere on the feed side ofthings as i plan on running e85 at the track , and pumpgas/meth on the street since i cant buy e85 locally
diest chute shipped , its a lil underrated for the car but its just to get me past the tech guys
trying to decide if i want to buy a methanol injection kit or piece my own together , u guys have any suggestions ???
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From: Utah
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: and so it starts
lol i think the turbines on the old turbos were just a touch small
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Joined: Nov 2008
Posts: 2,435
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
Re: and so it starts
Hey Dave, here is the link to that meth/alky injection parts list.
http://www.turbomirage.com/water-alc...arts-list.html
http://www.turbomirage.com/water-alc...arts-list.html
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From: Utah
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: and so it starts
Hey Dave, here is the link to that meth/alky injection parts list.
http://www.turbomirage.com/water-alc...arts-list.html
http://www.turbomirage.com/water-alc...arts-list.html
i gota get a better video today when before i pull those old headers and turbos off so u guys can see just how much air they are moving at idle
then im going to put the up and fowards on and the t4 gt3582's
if anyones interested ill be selling those log manifolds and t3/t4's they are perfect for a stockish tpi or carb build
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Joined: Nov 2008
Posts: 2,435
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
thanks i had that saved on my old laptop that died and couldnt find it again , the pump is always the most expsenive part
i gota get a better video today when before i pull those old headers and turbos off so u guys can see just how much air they are moving at idle
then im going to put the up and fowards on and the t4 gt3582's
if anyones interested ill be selling those log manifolds and t3/t4's they are perfect for a stockish tpi or carb build
Thats the parts list Im going to use for the meth injection so I can get this car dynod once I finish off the tuning. Cause If I try to dyno it itll go boom, lol. Not enough moving air
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From: Utah
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: and so it starts
I might be interested in one of those hybrids for the hybrid, lol. Might be a minute till I get funds though.
Thats the parts list Im going to use for the meth injection so I can get this car dynod once I finish off the tuning. Cause If I try to dyno it itll go boom, lol. Not enough moving air
Thats the parts list Im going to use for the meth injection so I can get this car dynod once I finish off the tuning. Cause If I try to dyno it itll go boom, lol. Not enough moving air
it will be fine they have a big fan they stick infront of the car , we did 3 pulls on mine back to back with no issues
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Joined: Nov 2008
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
You didn't have a TMIC though. Even though I increased the efficiency of it by making a scoop with splitters inside it, I have a feeling that the fan wouldn't do crap once it hits 10psi. I may push it to 15psi but only if I add the meth injection.
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From: Utah
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: and so it starts
just ordered a set of theese for the front

along with some nexon sb802 front tires 165/80/15
im holding off on the rears till i know what im doing for the rear end , if i can get a 9 inch housing .5 shorter per side im going to get the 15x10's for the rear , if i get stuck using the stock width dana 60 ill get the 15x8's and run a 275 tire
hoping for the 15x10's as im not a small tire fan
wheels and tires should be here by tuesday or wensday at the latest
parachute and tubing for that should be here tommorow morning
i also ordered up all the misc pieces i need to install the nx direct port nitrous kit
ordered swingouts for the cage and the padding/window net i need
later this week im going to place my order for a set of glass doors and rear suspension parts,front drag springs and a set of front struts
i want this car finished completly by the end of january so im going to be hitting it hard over the next 2 months

along with some nexon sb802 front tires 165/80/15
im holding off on the rears till i know what im doing for the rear end , if i can get a 9 inch housing .5 shorter per side im going to get the 15x10's for the rear , if i get stuck using the stock width dana 60 ill get the 15x8's and run a 275 tire
hoping for the 15x10's as im not a small tire fan
wheels and tires should be here by tuesday or wensday at the latest
parachute and tubing for that should be here tommorow morning
i also ordered up all the misc pieces i need to install the nx direct port nitrous kit
ordered swingouts for the cage and the padding/window net i need
later this week im going to place my order for a set of glass doors and rear suspension parts,front drag springs and a set of front struts
i want this car finished completly by the end of january so im going to be hitting it hard over the next 2 months
Last edited by project89; Nov 17, 2014 at 12:07 AM.
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From: Utah
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: and so it starts
i didnt get to do much today but my new front wheels and tires arrived today
summit racing drag-thrusts in 15x4 for the fronts along with a set of nexon sb802 165/80/15 front tires
summit racing drag-thrusts in 15x4 for the fronts along with a set of nexon sb802 165/80/15 front tires
Thread Starter
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From: Utah
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: and so it starts
chute + wheels with tires mounted up

and on the car


this weekend ill work on fabing the chute mount

and on the car


this weekend ill work on fabing the chute mount
Joined: Nov 2007
Posts: 845
Likes: 4
From: Salt Lake
Car: 1989 IROC & ROLL-Z
Engine: L98 Vortec FIRST TPI
Transmission: T56, Mech Speedo
Axle/Gears: G92 J65 3.27
Re: and so it starts
lookin good. i like the wheels.
are you going to be able to run it anywhere around here before spring?
not sure if RMR is closed yet or not.
are you going to be able to run it anywhere around here before spring?
not sure if RMR is closed yet or not.
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From: Utah
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: and so it starts
las vegas is open even in december , i want to get the new 61 or 66mm turbos and headers on it before i take it down, it all depends on what the weather around here does really. it been so cold down here the last 2 weeks i havent wanted to work on the car, atleast not till the furnace in the shop gets fired up.
if all goes well maybe ill get the cage and chute installed over the next 2 weeks and drag it down to vegas , as im planing a weeklong trip down there in December anyways
im pretty sure rmr has been closed
edit yeah oct 3rd they closed
if all goes well maybe ill get the cage and chute installed over the next 2 weeks and drag it down to vegas , as im planing a weeklong trip down there in December anyways
im pretty sure rmr has been closed
edit yeah oct 3rd they closed
Last edited by project89; Nov 27, 2014 at 01:58 AM.
Thread Starter
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From: Utah
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
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: and so it starts
Not sure why. A friend from LV Buicks emailed the coordinator, he and told him no more TnT or MM. LVMS has the schedule up on their site though.
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From: Utah
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: and so it starts
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From: Leicester,Massachusetts
Car: 1983 CHEVROLET CAMARO Z28
Engine: Forged 355 with a GT45 turbo
Transmission: TKO 600
Axle/Gears: built 4th gen rear with 3.27s
Re: and so it starts
Lookin good man. Keep em coming
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From: Utah
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: and so it starts
rears came in , will go mount them up totday or tommorow
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From: Utah
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: and so it starts
shes starting to look good , just need to get the ride hieght sorted , and get some fatter tires on the back , i just threw a new set of 255's i had on it for now

tons of room might need 295's to fill it in nicely




tons of room might need 295's to fill it in nicely



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From: Utah
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: and so it starts
i didnt have any 1 5/8's tubing so i used some heavy wall 1.5 inch square stuff i had laying around , its pretty solid and prolly overkill already, but i think im going to weld some plate to th crash bar on the back side




dam top angle moved on me going to have to strighten that out but damn its solid dont think ill have any issues with it, called it quits for the night ill get it finished up tommorow
edit
im going to cut the angle flush with my side supports to clean it up and weld along them




dam top angle moved on me going to have to strighten that out but damn its solid dont think ill have any issues with it, called it quits for the night ill get it finished up tommorow
edit
im going to cut the angle flush with my side supports to clean it up and weld along them
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From: Utah
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: and so it starts
never got to finish it yesterday , i just had to give up for the day and head home so this is as far as i got

wensday ill finish that up , next weekend , the log headers and twin 57 turbos get pulled so i can install the up and forward headers , and install the twin 66mm turbos

wensday ill finish that up , next weekend , the log headers and twin 57 turbos get pulled so i can install the up and forward headers , and install the twin 66mm turbos
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From: Utah
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: and so it starts
it hauls pretty good with the 57's as it is just runs out of steam on the top end ,ive been haning an intermitant ignition issue i need to figure out, at first i though it was my megasquirt so i disabled the ms from controling the ignition and have been running locked at 16* but the spark cutouts are still there.
if i can get it figured out this weekend ill take it out for a quick video before i pull the old turbo setup.
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Joined: Nov 2008
Posts: 2,435
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
it hauls pretty good with the 57's as it is just runs out of steam on the top end ,ive been haning an intermitant ignition issue i need to figure out, at first i though it was my megasquirt so i disabled the ms from controling the ignition and have been running locked at 16* but the spark cutouts are still there.
if i can get it figured out this weekend ill take it out for a quick video before i pull the old turbo setup.
Did you ever put your MS2 cpu back in?
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From: Windsor Ontario
Car: 1987 Z28
Engine: 2005 5.3L, LS6 Cam
Transmission: T56
Axle/Gears: DTS 9" 3.50 TrueTrac
Re: and so it starts
What backspacing are you using in the rear? They sit in pretty far. I ran a 15x10 with 6.00BS on a 275 and it filled out the wheel well a lot more. Id personally run a small spacer.
Jay
Jay
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From: Utah
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: and so it starts
5.5bs , im going to stick a small spacer on them for sure , had to do the same withthe 15x8 on 5.5 bs draglites i run on my v6 car as well
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From: Utah
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: and so it starts
still running the ms1 cpu not sure why the psark is dropping out but the ms is not controlling igition right now and i still have the issue , need to check the icm and coil
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From: Utah
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: and so it starts
i have the injectors and coil on the same 40 amp relay, going to split them up and see if it helps
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Joined: Nov 2008
Posts: 2,435
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
Last time mine did it it was colder seasonal temps. Its back and guess what? Only in colder temps once again.
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From: Utah
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: and so it starts
i still havent been able to find my ms2 cpu i thought it was in my storage unit but i looked and it wasnt were i thought i put it , my friend has an ms2 i may swap into the car though
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
Sounds like a simple ignition. Yeah, check the wiring. I would check the reluctor in the dizzy if it is a small cap HEI. They rust and intermittent fail.
If it is a large cap with built in coil I would convert to external coil or just go small cap. The stock coils and most aftermarket coils built in to cap suck.
If it is a large cap with built in coil I would convert to external coil or just go small cap. The stock coils and most aftermarket coils built in to cap suck.
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Posts: 2,435
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
Sounds like a simple ignition. Yeah, check the wiring. I would check the reluctor in the dizzy if it is a small cap HEI. They rust and intermittent fail.
If it is a large cap with built in coil I would convert to external coil or just go small cap. The stock coils and most aftermarket coils built in to cap suck.
If it is a large cap with built in coil I would convert to external coil or just go small cap. The stock coils and most aftermarket coils built in to cap suck.
Thought it was the egr leaking and it was, then it started getting warm out and it stopped dropping spark.
The only thing in common with mine is cold. Before it was cold and dropped spark, now its cold again and it started dropping spark.
Now I dont know if Daves did it beforehand. But this makes me think resistance goes to high for something. Wouldnt be under the hood as that heats up. For mine the MS1 is in the passenger compartment. I have no clue if im on the right track, which is why I was trying to see if it went away with the MS2 cpu.
But everything ignition wise + wiring is new and checked literally 6+ times.
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
When mine was doing it the entire ignition was swapped out/tested. Brand new dizzy and internals, newer coil, etc.
Thought it was the egr leaking and it was, then it started getting warm out and it stopped dropping spark.
The only thing in common with mine is cold. Before it was cold and dropped spark, now its cold again and it started dropping spark.
Now I dont know if Daves did it beforehand. But this makes me think resistance goes to high for something. Wouldnt be under the hood as that heats up. For mine the MS1 is in the passenger compartment. I have no clue if im on the right track, which is why I was trying to see if it went away with the MS2 cpu.
But everything ignition wise + wiring is new and checked literally 6+ times.
Thought it was the egr leaking and it was, then it started getting warm out and it stopped dropping spark.
The only thing in common with mine is cold. Before it was cold and dropped spark, now its cold again and it started dropping spark.
Now I dont know if Daves did it beforehand. But this makes me think resistance goes to high for something. Wouldnt be under the hood as that heats up. For mine the MS1 is in the passenger compartment. I have no clue if im on the right track, which is why I was trying to see if it went away with the MS2 cpu.
But everything ignition wise + wiring is new and checked literally 6+ times.
what are you guys running for an ICM & coil (model and year)? What are you setting the dwell time in MS too? MS doesn't do dynamic dwell time like GM ECM/code does.
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From: Central Florida
Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
MS is kind of hard to diagnose ignition probs without an oscope. Could be due to the higher current edge rates when cold (ground bouncing) or other stuff like the tweak ckt parts on the MS itself. Best thing to do is overkill wiring and perfect grounds.
what are you guys running for an ICM & coil (model and year)? What are you setting the dwell time in MS too? MS doesn't do dynamic dwell time like GM ECM/code does.
My turbo thread on the v6 boards has a table of contents for easy access from the first post, if you want/need more info.
Guess its not really thread hijacking yet cause Dave and I may be having the same problem.
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From: Utah
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: and so it starts
Running dwell is around 3ms IIRC. Replacement new Cardone 89 rs 2.8 dizzy, MSD coil. Dropout was present before and after those were replaced. Also replaced at that time was wires, cap, had to frankenstien a rotor cause the strap was way too short, proper grounds. Im an EE so the electronics are always a priority and done right with me.
My turbo thread on the v6 boards has a table of contents for easy access from the first post, if you want/need more info.
Guess its not really thread hijacking yet cause Dave and I may be having the same problem.
My turbo thread on the v6 boards has a table of contents for easy access from the first post, if you want/need more info.
Guess its not really thread hijacking yet cause Dave and I may be having the same problem.
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
Peak coil current should be in the 6 to 10 amp range. 8 saturated injectors is about 8 to 10 amps if fired batch mode. I don't see a problem there unless the wiring connections are poor.
Have you guys looked at the "MS reset" diagnostic feature to see if you are getting MS resets due to ground bounce when firing the coil? I am not sure how you removed the MS from firing the coil to determine that it is not MS related. Did you install a 4 pin HEI dizzy?
Have you guys looked at the "MS reset" diagnostic feature to see if you are getting MS resets due to ground bounce when firing the coil? I am not sure how you removed the MS from firing the coil to determine that it is not MS related. Did you install a 4 pin HEI dizzy?
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From: Utah
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: and so it starts
Peak coil current should be in the 6 to 10 amp range. 8 saturated injectors is about 8 to 10 amps if fired batch mode. I don't see a problem there unless the wiring connections are poor.
Have you guys looked at the "MS reset" diagnostic feature to see if you are getting MS resets due to ground bounce when firing the coil? I am not sure how you removed the MS from firing the coil to determine that it is not MS related. Did you install a 4 pin HEI dizzy?
Have you guys looked at the "MS reset" diagnostic feature to see if you are getting MS resets due to ground bounce when firing the coil? I am not sure how you removed the MS from firing the coil to determine that it is not MS related. Did you install a 4 pin HEI dizzy?
basically the bypass line is open , so the ecm has no control over timing, the coil/injectors are wired threw my arc 4000d's relay panel ( 40 amp relay)
im not heading to the shop till tongiht but ill grab some data logs and investigate a few ideas i have
Joined: Jul 1999
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: and so it starts
Now I use coils with screw terminals

-- Joe
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From: Leicester,Massachusetts
Car: 1983 CHEVROLET CAMARO Z28
Engine: Forged 355 with a GT45 turbo
Transmission: TKO 600
Axle/Gears: built 4th gen rear with 3.27s
Re: and so it starts
I still have an issue with my megasquirt.........the two wires that go from the distributor to the vref have to be disconnected in order for me to run the car. So im running the timing locked out while they are disconnected. PITA
Joined: Jul 1999
Posts: 12,089
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: and so it starts
-- Joe
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From: Leicester,Massachusetts
Car: 1983 CHEVROLET CAMARO Z28
Engine: Forged 355 with a GT45 turbo
Transmission: TKO 600
Axle/Gears: built 4th gen rear with 3.27s
Re: and so it starts
yeah I plan to. reading about his issues with spark reminded me of mine. lol
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From: Utah
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: and so it starts
I had similar problems back in 2002 when I ran a Vortech. I thought it was the dizzy, module, coil, etc. Ended up being the stupid factory plug to the coil. The wire looked fine, but some of the fingers must have been broken off inside the white wire. I remember I came through the traps lost ignition then it kicked back in and blew up the muffler. I rolled to a stop and the fire/rescue guys came blazing down the track because they thought I was on fire.
Now I use coils with screw terminals
-- Joe
Now I use coils with screw terminals

-- Joe
i never made it down to the shop last night but deffiantly going this weekend ill be sure to check the wires should just be able to wiggle them around and see if it cuts out .
i had 0 issues with the stockish engine so maybe one of the wires got damaged when i swapped in the new engine
Thread Starter
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From: Utah
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: and so it starts
ok im torn twin 66's or a single 76mm turbo ugh choices choices choices
input?
input?
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
Well, equating areas shows that your current 57mm twins act like a single in the 78mm range. I would stay away from the 76mm single. If you go single I would do an 80 to 90mm. Stuffing the Turbonetics HP-88 in a BW S400 series is a nice setup. China must be making 83mm and up turbos by now?
Twin 66mm equate to about a 90mm single.
Twin 66mm equate to about a 90mm single.
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2008
Posts: 10,401
Likes: 5
From: Utah
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: and so it starts
Well, equating areas shows that your current 57mm twins act like a single in the 78mm range. I would stay away from the 76mm single. If you go single I would do an 80 to 90mm. Stuffing the Turbonetics HP-88 in a BW S400 series is a nice setup. China must be making 83mm and up turbos by now?
Twin 66mm equate to about a 90mm single.
Twin 66mm equate to about a 90mm single.
the compressors i have are good for the hp its the turbines that choke the engine
the t76 im looking at is an .81 t4 p-trim it should do 800 to the tires i think
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Posts: 4,432
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
I thought you had a TV7512 kicking around at some point. I would bolt that sucker on. It has enough exhaust flow/wheel and a big enough compressor cover to flow more air. If it misses your HP target, send it out for a bigger comp wheel. I kind of like the T6 frame for 8 cyl singles and that much HP. A T4 will make the number but packaging the design using a T6 allows for upgrades.
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Joined: Jun 2004
Posts: 176
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From: Lemont, IL
Car: 1988 pontiac Trans Am GTA
Engine: DFI,Single Plane,200cc Dart I.E,355
Transmission: Th400 PTC converter
Axle/Gears: Stock Ausie 9 bolt w/3.45 gears
Re: and so it starts
I'd say go 76-78mm with .96-1.0 builds boost good
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2008
Posts: 10,401
Likes: 5
From: Utah
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: and so it starts
I thought you had a TV7512 kicking around at some point. I would bolt that sucker on. It has enough exhaust flow/wheel and a big enough compressor cover to flow more air. If it misses your HP target, send it out for a bigger comp wheel. I kind of like the T6 frame for 8 cyl singles and that much HP. A T4 will make the number but packaging the design using a T6 allows for upgrades.
ended up buying a prtim t76 with an .8x turbine , i can always swap out the turbine hosuing later if need be , but i think the .8x will work specially since im still limiting rpm on this build ,
new turbo should be here monday





