I have heard a few references that turbo technology's kit "sucks because the manifold will crack" and to go with a different kit... Who else makes one????

 

TTI's kit isn't that bad for a stock car. But if your looking to max hp, your going to have to add a real intercooler, larger downpipe "3 inch ", larger crossover and get rid of the stock manifold on the passenger side and add either a JBA or SLP header which is the norm. With that being said, Proturbokits has a new kit for the LT1's. Looks extremely good and addresses all those problems and then some. You can find the kit at http://www.proturbokits.com/ , and you can see some pics in a post that I created a few weeks back showing some of the kit..... http://web.camaross.com/forums/showt...threadid=95234


Jose

 

The proturbo kit still uses the manifold to hold the turbo, the crossover doesn't look any bigger than the TurboTech kit, the intercooler is smaller, and the price is $4000 without the turbo. I'm not saying that it won't be better than the TurboTech kit, but I'm skeptical right now. It needs to prove itself. You can pick up a TurboTech kit for $3500 with the turbo.

 

The turbo tech kit is horrible for anything other than a stock car though. The factory manifold, crappy crossover, and log style header are not a good flowing combo. The log doesn't align the exhaust pulses or even direct them towards the turbine. PTK's kit is the best "affordable" kit out there right now with good 1 5/8" primary 4-1 headers, good wastegate, and fuel support. I'm sure their later versions of the kit will only get better. And a little less pricey with time.

At least until Turbolocity gets done with theirs. They are taking their time.

It just pisses me off that the LT1 had the be out of production for 6 friggin' years before any companies decided to do this.

 

The proturbo kit does have a better turbo header, and wastegate, I can't argue with that. But I think you may have to remove the stock fans for the turbo. Hopefully someone will have some numbers soon, so we can see how it performs.

 

does installing a turbo put alot of strain on the motor, compared to a supercharger, or nos.

 

It increases cylinder pressures and heat like the others, but doesn't add undue harmonics and stress to the rotating assembly like the SC. You want as little vibration as possible with engines. Not saying anything bad about SCs, they're great for street machines. Cheaper, easier to install, and, in the case of many on this board, much more applicable. IMO, it's pointless to turbo a V8 street car unless you plan to make over 600rwhp.

 

Oh boo hoo you have to remove the stock fans. Big flippin deal. They are heavier than a bag of $hit anyway. Get a single 16" fan and you'll be fine AND save space all at the same time. $60 well spent.

ANd if i recall, $3400 was racer price. $4000 will be a dealer price If I had to guess. Everyplace Ive bought from that had a racer price, was the price for me. Im a racer. Im sure you are too. Granted its still not cheap but Id pay 4500-5000 for a good turbo kit with potential for close to 1000hp then I would a cogged procharger or vortech setup.

And what about their intercooler being little?? Its a liquid to air. They are smaller than air to air units.

 

Well their is no way to compare the PTK kit to the TTI kit. First the PTK kit uses real headers, nothing manifold about it, and can be ordered up to 1 3/4 primaries. Also the crossover being 2.5 is plenty, your only running 4 cyl's through it. Also the on the PTK crossover feeds the turbo and not the driverside header. Thats where the TTI kit is bottlenecked. Also PTK's crossover uses a flex section which will allow movement and expansion which is why the TTI kit always cracked. One thing with the TTI kit is if you could run the pass side crossover to the turbo it would make gobs more power. But running all 8cyls through a 2.5" pipe just won't make huge power. Another thing is wastegate placement, with the TTI kit its placed on the crossover, which is to far to accurately control boost. With the PTK its located right at the turbo, so that should allow for better boost control and creep problems. Also the IC on the PTK kit is Water to air, so the size can be ALOT smaller since water to air has a heat exchange capability 4 times more then air to air, plus the PTK IC also has a heat exchanger like the 03 Cobra to keep the water cooled in daily driving. Heck PTK is using the same IC thats on the F-body kit on a stang pushing 800+rwhp, and still seeing only 85 deg IAT's. I think these 2 kits are very different.

Jose

 

Ahh Curt you beat me to it...lol. And yes this kit could flow up to 1000hp, especially since you can order it with a GT80 or the new killer T76 GTQ, which supports 1250hp....


Jose

 

Just wondering, the crossover on the PTK appears to be 2.5" how big (small?) is the crossover on the TTI?

 

You all are way too sensitive about this stuff. Both kits have their pros and cons, that's all I was getting at.

 

FWIW, you want a small (to a point) crossover to keep high exhaust gas velocity to the turbine. You can't have too big of a downpipe though..

 

1250hp from a 76mm turbo?? Where did you hear that from? I know about the new GT Q-trim wheels and how they are supposed to have better spool-up and be capable of more power, but 1250hp is more than an 88mm turbo is capable of!

 

I agree with you for the most part, which is why I asked the question.

Unless TTI's crossover is under 2" I doubt that you'll see a difference in peak power or anything besides that it will be more responsive. WRT to the downpipe size, I agree there as long as you do not increase down pipe size too suddenly, and that past a certain point you'll have a hard time measuring the difference in responsiveness (within reason too small a down pipe will not hurt max power on a turbo setup either, it will just cause it to spool slower).

What gets me is the setups that have 2-1/2" to the turbo and then 2-1/2" or 3" down pipes... do people not realize that to get a turbo to spool you've got to give it a difference in pressure across the 2 sides?

So again, what size is the TTI crossover?