What does it take to run 13 seconds?

[skalor]

I am getting headers only because I have to get custom manifolds for the 3100 heads anyways (different shaped exhuast ports).  Otherwise I would just leave the stock manifolds on there.  So I am hoping to have a guy make me some headers and a custom crossover (since the crossover is suposedly the biggest exhaust restriction we have)

Did you ever think to just mill the exhaust manifolds out to match the "D" shaped ports from the 3X00 heads??  That's what I'm planing on doing if I ever do a 3x00 head/intake swap.

[maximage]

Go for broke shawn!

I will say this about the headers idea though. Unless you have a fabrication artist that is good enough to do equal lenghters, and make them fit the TGP engine bay(which from what my shop has determined is nearly impossible), port match your stockers, or grab a set of 3100 mani's and TGP manis and hack them both apart and make them work. If you try to run non-equal length headers on a Turbo car, you will lose a LOT of power, as well as possbily hurt the turbo, because the pulses will be way off. There is a fine balance in working with a turbocharged engine. A lot of people have found this information out the hard(and expensive) way. Trust us on this.

[TGPilot]

If you try to run non-equal length headers on a Turbo car, you will lose a LOT of power, as well as possbily hurt the turbo, because the pulses will be way off. Trust us on this.

Ok I have a question. How could non-equal length headers be worse than the stock TGP exhaust manifolds? The #1 and #2 are the only exhaust ports that are given direction towards the turbo. #2, 3, 4, 5, 6 run into a "T". 2 through 6's exhaust pulse would hit the T and then go both towards the other exhaust ports and towards the turbo. If one of the pulses is going towards an opposing exhaust port...wouldn't that cause more restriction for that pulse?  8)

[maximage]

With the manifold, it all collects right there in the manifold, therefore reducing the pulses, and making the turbo see a more steady flow. If you ran unequal lenght headers, even with the collector at the end, you are still bringing each individual cylinder to the turbo itself, causing each one to pulse at the turbo. But since some are reall shotr in distance, and some a re long, you essentially wind up with 2 big pulses, and nothing between. Ever listen to a v-6 or 8 on open headers? It pulses out of each side, and has a lag between them.

[dbtk2]

or grab a set of 3100 mani's and TGP manis and hack them both apart and make them work.

Thats what I am thinking about doing, but I would think that would be fairly difficult to do also because you would have to make it smooth so it flows well, correct?  Or should I just cut both manifolds in half and weld them together?  I can easily do that, I just figured (not being the most knowledgable about turbos) that headers would be better than manifolds.  If the headers will make it worse, then I will get some manifolds custom fabricated, but being used to supercharged cars, I didn't think headers would hurt anything.  Stupid power adders that rely on the exhaust!


Shawn

[god910]

why not just make a set of log manifolds so you wouldn't have to screw w/ frankensteining 2 mani's.

[ShuGTXTurbo]

So while he may have run 13s (verification/confirmation of those results remain to be seen), he hasn't let on to the "secret" and it certainly is NOT representative of what any board member might reproduce with THEIR TGP and the stock turbo, so it's a pretty worthless point of reference as far as I'm concerned.
Hopefully someone else can still provide a quantifiable report of their car running 13 seconds with a timeslip and the story on how it was accomplished, and especially the steps that any regular TGP owner might take to achieve the same results.

Granted JeffM may not be willing to share all of his secrets that he has done to his car but I'm sure he would be more than willing to help out and give pointers in the area of improvement.  As far as the validity of his 13 second quarter mile times check out his website there is a lovely picture of the time displayed on his G-Tech Pro which is acurate to within 1/10 of a second. :D  :headbang:

[dbtk2]

Granted JeffM may not be willing to share all of his secrets that he has done to his car but I'm sure he would be more than willing to help out and give pointers in the area of improvement.  As far as the validity of his 13 second quarter mile times check out his website there is a lovely picture of the time displayed on his G-Tech Pro which is acurate to within 1/10 of a second. :D  :headbang:

Not that I don't believe his car is that fast or anything, but I have run a 12.1 @ 130 on my G-tech pro competition in my STE, so I tend not to believe those much.

Shawn

[tyroelite]

imo, g-tech = devil... wrecked my tgp testing w/ one of them....

[Tooky]

From every forum I've been in; the GTech is not and has not been an acceptable method of verifying a cars performance.  Especially when extraordinary times are in question.  You may say it's accurate to within 1/10th of a second but what happens if the road you are on has a downward slope to it?  Or the unit is not perfectly (0.00) levelled before you run the car?

I agree Jeff normally is willing to help and give pointers for improvement but unfortunately has not replied to my significant post effort on the "Take the TGP to the Next Step of Performance" thread posted over a month ago...  :(  It was the most-viewed thread for the last Month, but maybe he missed it...?

And for the record I am also not saying his car isn't that fast, only pointing out that he hasn't provided sufficient evidence to prove that it is that fast, and when making an uncommon claim (i.e. a 13 second TGP and/or a TGP running 1.5 seconds faster 0-60 than similarly equipped cars), the burden of proof lies on the person making the claim.

[TGPilot]

Well some people raise the BS flag and the person being called out would go to the track to prove them wrong. I know I would! 8)

[Tooky]

5 days and no timeslips.  I am beginning to wonder if anybody on this board has run 13s?  The best my TGP ran was 14.7, I'm willing to post the timeslip if I have to; I sure didn't think I'd have the "fastest timeslip" when I wrote this post  :roll:  :oops:

[maximage]

I wont post a time, because I dont have slips yet. But I guaruntee you arent the fastest TGP on the site(not trying to sound like a prick....insert my evil giggle here, because I need to get my car tuned and to the track to show smoe slips!)

[god910]

If my TGP isn't faster than 14.7, I'm cutting that mutherfucker in half.

[Tooky]

But I guaruntee you arent the fastest TGP on the site

I sure hope not!!   I was posting that kind of tongue-in-cheek, that's why I made the rolly-eyes icon :)