Stock turbo & Untouched Engine--DRAG TIMES????

[RatFink]

in 1994, car had a external fuel pump, fuel reg. Cut hole in stock DP at the very bottom of the curve of the pipe.Took the road light out and made a ram air to K&N (which I still use) Everything else was stock, even the chip.
Took the spare tire out and ran lexan t-tops, ate ramen noodles for a month and lost about 15lbs, so the car was as light as possible. Had an adjustable actuator set to 21 psi, pump gas with 104 additive. Probably was knocking. Shi**y Goodyear radials ran 1.89 60 ft' and 12.90 @108.9 mph.

 

[67turboCamaro]

12.60, full weight 86 T. Could have went a little quicker but I wanted to make sure I could drive it home.

Stock turbo
stock I/C
stock downpipe

The only mods were Walbro pump and hotwire, TT chip, K&N filter, slicks, and 110 fuel.

 

[bison]

This was back in 99. Engine was opened because it had a bent valve when i got it with over 100k on it. Only internal mods i did were timing chain and valve springs. Stock turbo, dutt neck intercooler and 28.5x9 slicks with open exhaust weighing 3500+lbs. 11.88@112. 1.60 60' 80 degree air. Later the same engine with untouched bottom end and a 212-212 cam, heads, Precision FMIC, and a PT54 went 11.80-12.00@122-124 with hard as a rock radials at 24 psi (2.00-2.1 60's). About 3 months later i broke a main cap at 28 psi and split the block . Never got any times at 28 psi but it would have gone about 128mph.

 

[spoolinV6]

First off and I don't want to come off as an a$$ hole but take that stupid KB Hi-Lo Pro Chip and flush it down the toilet. Call Turbo Tweak you will see a world of a difference with his chip. Trust me I had a KB Hi-Lo Pro Chip 100yrs B.C.

I know this chip is starting to take its toll, ive had it for a while and now i cant even boost over 12psi with 93 oct. But damn did Kenne Bell make good products for our buicks years back, too bad he doesnt anymore. I plan on getting a TT chip just havent had the time to order one yet. Thanks for the feedback.

BTW what other bolt ons do u guys recommend besides the ones i already got on the car. The car is mostly street driven but i occasionally visit the track every once in a while. Already have a 3" DP on order. Also, on a limited budget. THANKS.

 

[gbsean]

65k stock...nothing added...running super unleaded...no chip no pump.no nothing stock air filter...it was as delivered 13.47 @ 92 mph...have time slips somewhere...felt embarased at e-town with cars running 11's and 12' this was back in 98....thats what started the bug...first time out not boosting at line ran a 14 something..oh and it weighs in at a ****ping 3800#'s fully optioned except t-tops

 

[spoolinV6]

nice.....as for me and your guys' suggestions on some future bolt ons, i just want the car to dip into the mid 12's. Since the car is mostly street driven slicks or DR's are probably not an option. I want to keep the engine untouched along with stock turbo, IC, trans, etc. I know i already got the basics but any other suggestions would be appreciated

 

[spoolinV6]

BTW feel free to keep posting your track times....

 

[gbsean]

ditch the chip...get a scan tool..and adj waste gate actuator...was able to get to 12.9.... on regular radials do you have a mechanical boost gauge..

 

[UNGN]

The best mod for the street is alcohol injection that will allow higher boost levels.

Dollar for dollar, no other mod will even come close in bang per buck.

You already have a 2.5" exhaust, so as long as you have low backpressure mufflers, your exhaust is easily good enough for your goals. A 3" downpipe might be worth .1 second, but isn't worth more than this on a 12 second car.

In back to back testing my THDP was less than .1 / 1.5 mph quicker than a 2.5" downpipe and a ported factory elbow on an 11.8 second car.

 

[spoolinV6]

thanks for the post, ya i thought about alky, kinda pricey but i was considering it. Just looking for some other bolt ons to expand my options.

 

[UNGN]

thanks for the post, ya i thought about alky, kinda pricey but i was considering it. Just looking for some other bolt ons to expand my options.

The biggest bang for buck bolt on is one you already have (Exhaust) and a K&N air filter. After that, raising the boost is really the only thing that will make significantly more HP without going into the motor.

When I bought my TA49, I was under the mistaken impression that I would buy a larger turbo, bolt it on an go faster. At street boost levels, the car actually slowed down slightly. It wasn't until 20 psi that the car was only .1 second faster than my stock turbo. Sure at 23 psi, its .4 second faster than my stock turbo, but you need race gas (or alchy injection) to see this difference.

 

[spoolinV6]

as far as raising the boost goes, i was told by many to let the aftermarket chip take care of that. Any takes on this???? Or do you just tune it with an adj. wastegate??

 

[spoolinV6]

also, from what i understand, most street chips increase boost to around 15-17psi, isnt this just about what you want it for a stock turbo???

 

[UNGN]

also, from what i understand, most street chips increase boost to around 15-17psi, isnt this just about what you want it for a stock turbo???

No.

Ideally, you want 20 PSI and High Timing with a stock turbo, but with 93 octane gas, this is a recipe for a blown head gasket.

15-17 psi and low timing is THE MOST boost you can run with pump gas, but is A Second and 1/2 SLOWER in the 1/4 than 20 PSI and High Timing.

This isn't "what you want", but is "all you can get".

 

[spoolinV6]

see most of the time im running 93 oct, so i guess i was right on that, but i suppose if i wanted to dump in some 104 oct for the track i can turn up the boost w/o any problems....right?? So then i would need an adj. wastegate.

Just making sure on this, but if i wanted to run 104 oct for the track i would need to get a whole new chip for 104 oct correct?? Or is it possible to run 104 oct on a 93 oct chip?

 

[UNGN]

see most of the time im running 93 oct, so i guess i was right on that, but i suppose if i wanted to dump in some 104 oct for the track i can turn up the boost w/o any problems....right?? So then i would need an adj. wastegate.

You can make an adjustable wastegate for about $6 including the tools required.

Ideally, if you are going to run 104 octane, a race chip will yield better results than turning up the boost with a "street chip".

An old Thrasher 100 or 108 will yield better results at the track than the most modern "street" chips if you are going to put in race gas and turn up the boost.

You can probably find one for $20.

 

[spoolinV6]

thanks man for your help, to tell u the truth ive only ran a couple times with 93 oct which is why im askin these questions.

When im looking for race gas, say 104 oct, am i just looking for an additive i just mix in the tank with the 93 oct?

 

[machinegun]

Well you said no Alky, however if you want fun get the alky.

My daily driver 106,000 mile unopened stock car with gutted cat, hooker exhaust, DIY alky, 009 injectors and Reds 107 race chip all purchased used.

car went 12.20 110 with 1.86 60 foot on BFG DR's on 22# boost running 94 octane sunoco and methanol.

hope this helps

 

[spoolinV6]

ya man hopefully someday soon the alky will come. But for now would i just be looking for a 32oz bottle of 104 octane booster or something or am i getting it confused with something else?

 

[UNGN]

thanks man for your help, to tell u the truth ive only ran a couple times with 93 oct which is why im askin these questions.

When im looking for race gas, say 104 oct, am i just looking for an additive i just mix in the tank with the 93 oct?

The best octane booster is race gas. It way cheaper than any commercial "octane booster" for the amount of octane raised/dollar.

If you don't have a cat, a couple gallons of leaded 116 will really wake up a car.

If you have a cat, buy the highest octane unleaded.

At the track, I would arrive with 1/2 a tank and two 5 gallon jugs (one empty and one with race gas). I would pump out 5 gallons using the fuel rail schraeder valve and pump lead and add 5 gallons of race gas.

After the race, I'd pump out 5 gallons of high octane gas and put the 93 back in.

If I had to do it over in 2008, I would buy alcohol injection and not hassle with race gas.