Best output stock T2 setup?

[G-Pop Shop]

Hello all,

Just wanted some input, real numbers Dyno or ET's what are the best on the stock T2 setup??? Anyone over 300HP with the stock turbo/intercooler set-up? Any input would be appreciated. Thanks,

[Thomas Hand]

My 84 k-car ran 13.60 at 100 in 1989-1991 with 13 psi boost and an automatic with stock everything pretty much. Likely takes ~ 220 hp to do that.

[dklimek]

Quote:

Originally Posted by Thomas Hand My 84 k-car ran 13.60 at 100 in 1989-1991 with 13 psi boost and an automatic with stock everything pretty much. Likely takes ~ 220 hp to do that.

What mods did you have done?

[Thomas Hand]

The exhaust was open. Boost was up to 13 to 13.5 PSI.

[dklimek]

So was this with a manual boost controller (im not too sure what stock boost is..)? Do you have the intercooled model? Im guessing this was with a manual though?

[Thomas Hand]

I had the waste got pulled away from the compressor housing to get it up from the stock 4.5 PSI to get it at around 8 PSI and then I used calibrated orifices to manually bleed the boost up to 13.5 psi.

It was a stock 84 lower end with a stock 87 TII top end. The Throttle body and head and cam and exhaust manifold and injectors were stock, fuel pressure was stock, Ignition was stock. I had a good torque converter and good tires. We shifted it at 5100 to 5250 rpm. The last day at the track, we ran it 22 times and even when varying the boost all over from stock to 13.5 psi, it averaged 13.85 or so If I remember correctly.

[roachjuice]

86 glht w/ t2 style setup. i'm running a stock turbo. stock fuel system stock ignition. big fmic. boost was set at 11 psi. bogged the launch bad. ran a 15.0@99 lol. first time launching a fwd stick car. i bet it would turn some 13's. got the boost set at 16 now. feels stronger. my shadow was running 20psi through an auto and it ran a 13.9@99 (previous owner time)

[Marcus86GLHS]

"...... real numbers Dyno or ET's what are the best on the stock T2 setup???........."



when you refer to "stock" i presume you literally mean bone stock, just like it was made from the factory. nothing changed.

that being the standard, the next parameter to consider would be "how reliable do you want this engine?"

if the answer is "who cares" and you want to take a bone stock T2 up all the way to destruction on a dyno i'd guess you could sneak out maybe 275 hp by disconnecting the wastegate to achieve maximum boost, but the engine would not last at those levels due to the extreme lean conditions and extremely high inlet air temps.

a reliable bone stock T2 number might be 220-ish at the tires limiting boost to around 15-16 psi.

[Thomas Hand]

Marcus and Roach Juice,
I agree completely with your statements. I was running the old slow burn, stock 84 head; the logic module I had was set up specifically for the burn rate it had; the timing had been set up electronically to take advantage of the head, and I mixed higher octane fuel in with my 92 octane Amoco Ultimate to protect it at the 13.5 psi boost levels. The K-car liked the intercooler and I used smooth internal hoses and I always ran the stock fuel pressure regulator and injectors.

By not touching the head, I never screwed up the low lift air flow or velocity through the ports. Both of these contribute greatly to the ability to build boost quickly.

The logic module was specially built to let me leave all my electronics intact but control and take advantage of the TII hardware. It was all coordinated for the stock head and other stock components.

The factory guys knew what they were doing when they created and built the TII engine and its systems. The stock turbo and stock cam contributed to the ability to accelerate the relatively heavy K-car that quick. By not varying from the proven recipe, the entire engine worked well with the chassis and transmission and tires. I later added the roller cam from a TBI car which would have helped it run even quicker due to the zero overlap compared to my 9 degrees or so (84 stock turbo cam) but I never ran the car again.

Had I messed with the the head and cam and ports and added a bigger turbo or goofed with the fuel pressure, the car would have never run like it did. That was obvious when I saw other lighter cars with bigger cams and turbos running the same or less speed and/or slower ET than my heavier automatic K-car.

Driving it to work everyday was a breeze and, contrary to most hot rodded turbo cars, mine was faster than stock at low speeds and with the boost set back to 8 psi, 92 octane or even 90 was fine. The intercooler was a great economizer !!

I miss that car and regret the fact the rust destroys so much here in the midwest. I would have loved to have it ten year later when all the imported FWD cars showed up at the strip clicking off 14s and 15s with loud mufflers and fancy polished engine parts.....

[rob the plumber]

That K-car sounds truly impressive. My 86 GLH has a T2 swap, custom tune, exhaust, bigger injectors, 15 psi, etc.... and it "feels" very fast when the boost comes on. A lot faster than the 95-99 mph trap speeds that I see similarly equipped Omni's running.
I have a couple 10 second Mustangs, and mine certainly feels like it would go 12's on a tire.

[Thomas Hand]

Rob, I imagine with all things correct like you have them, it will rip for sure. The biggest thing I used to see was too much boost, not enough fuel; too much head, no way to use the added air on top and no way to compensate for the loss of air on the bottom; too much cam which killed all the bottom; too low of final drive gear; and on and on. You have NA cars, you know how that goes.
Tom

[detobias]

Quote:

Originally Posted by G-Pop Shop Hello all, Just wanted some input, real numbers Dyno or ET's what are the best on the stock T2 setup???

thats easy - a stock TII puts out 174 Hp and 200 ft-lb of torque

make changes to get more power, and it's no longer "stock"

[G-Pop Shop]

Sorry, let me clarify a little what I meant (or wanting to get info on) was stock T2 turbo, T2 intercooler, T2 1pc or 2pc manifold only. Everything else goes, come on is Tom the winner 15 years ago? Anyone any faster? Roachjusice sounds like you are close too..Let see it....Thanks guys,

[roachjuice]

Quote:

Originally Posted by G-Pop Shop Sorry, let me clarify a little what I meant (or wanting to get info on) was stock T2 turbo, T2 intercooler, T2 1pc or 2pc manifold only. Everything else goes, come on is Tom the winner 15 years ago? Anyone any faster? Roachjuice sounds like you are close too..Let see it....Thanks guys,

i'll try and go to the track before it closes and see if i can get faster. marcus has gone 12.9 with his glhs. stock t2 turbo and a indy intercooler. but i think he has +20's too. i've ran the car on 16psi now for about 5 months now. seems to be doing fine. my exact setup

86 t1 block stock
fastburn head +1mm valves (bought because previous head was messed up)
88 tbi cam
slightly ported 1 piece intake
stock exhaust manifold
big ebay fmic
ebay knock off rfl bov
stock t2 garrett turbo (ebay special 56 dolla shipped!!!!)
stock injectors
stock regulator
stock glht fuel pump
t2/t3 clutch
87 a555 trans w/3:85 gears
mbc set at 16psi
mopar glhs stage 2 computer
cold plugs (i think the champion 9's not sure)
straight pipe exhaust side exit 2.5 in
autometer boost gauge
and a narrow band gauge.

[Marcus86GLHS]

"...... stock T2 turbo, T2 intercooler, T2 1pc or 2pc manifold only. Everything else goes, ........."


okay that different.

the i/c is gong to be your bottleneck, so presuming you want a reliable T2 within your modification limits i could see a 20 psi T2 w/ +40's injectors, better fuel pump, custom calibration, better camshaft, porting, and a full 3" exhaust developing perhaps 250+ or so hp to the tires quite reliabley. i believe the 1989 T2 bottom end/internals is the strongest pedigree of the T2.



ROACHJUICE i got into the 12's with the stock GLHS intercooler and 17 psi boost (mods were exhaust, calibration, slicks and +20's), i got the Indy unit on there now w/ boost set to 20 psi but havent raced it this way yet.