Best Street/Strip turbo and converter for stock long block ?

[ikle]

I want to know the opinions of the best street/strip turbo and converter for a stock long block GN. I read an old post from (2003) on this very subject and it came down to these turbos: te44/ta49, te/ta60 and te/ta61 with a stock to 3000 stall converter.So what would be the best, up to date, turbo and converter combo for this application ? Remember it has to be responsive on the street and perform very well at the track. Thanks for your opinion, Kyle.

 

[bison]

That would depend on the performance goal.

 

[ikle]

That would depend on the performance goal.

Let's say a performance goal of mid-high 11's ( 11.50-11.90's )

 

[bison]

Restalled 12" with a te44 or 5857/58. All have been low 11's and a few ran 10's on unopened engines with them.

 

[KEVINS]

I just installed a 5831 and did a writeup on it in this forum.

ks

 

[JP112_89]

I bet Bison's new 62 (like the one he sold 87chisss, .63 garrett) and a tight 9/11 (most come 24-2600 stall) would really well for the 11.5's, conservatively. Or PTC n/l ....


Joe

 

[ikle]

I bet Bison's new 62 (like the one he sold 87chisss, .63 garrett) and a tight 9/11 (most come 24-2600 stall) would really well for the 11.5's, conservatively. Or PTC n/l ....


Joe

Joe you think the 62 would work great with a stock GN unopened motor, I always thought that the 60 series turbos needed ported heads to work properly. Thanks, Kyle.

 

[we4Mateo]

I run a TE44 on the street mostly but with plenty of track runs too; 200 passes or so now. My true stall is 2750rpm @ 0-1psi and it spools that 44 like you wouldn't believe. I run mid 11's all the time with a conservative tune; see sig. The extra compressor of the 60 or larger compressor wheels I would think would benefit a car with ported heads more than a stock longblock, but I don't have experience with anything other than my TE44.

 

[ikle]

Also is it possiable to build a TA (stock appearing) turbo to run those times (11.50-11.90's) on a conservative tune without maxing out the limitations of the turbo, to have room to grow for future upgrades ?

 

[we4Mateo]

Also is it possiable to build a TA (stock appearing) turbo to run those times (11.50-11.90's) on a conservative tune without maxing out the limitations of the turbo, to have room to grow for future upgrades ?

Talk to the TSA racers; I think they get up to 66mm wheels inside those stock appearing covers now.

 

[ikle]

I run a TE44 on the street mostly but with plenty of track runs too; 200 passes or so now. My true stall is 2750rpm @ 0-1psi and it spools that 44 like you wouldn't believe. I run mid 11's all the time with a conservative tune; see sig. The extra compressor of the 60 or larger compressor wheels I would think would benefit a car with ported heads more than a stock longblock, but I don't have experience with anything other than my TE44.

When PTC built my 10" converter for my combo the true stall they choose was 3,000 at 0-1 lbs boost. I am wondering if the new technology turbos would get me to my goals easier, without pushing the turbo to its max.

 

[bison]

I bet Bison's new 62 (like the one he sold 87chisss, .63 garrett) and a tight 9/11 (most come 24-2600 stall) would really well for the 11.5's, conservatively. Or PTC n/l ....

Joe

It's way too much turbo for an 11.5 car imo

 

[bison]

Joe you think the 62 would work great with a stock GN unopened motor, I always thought that the 60 series turbos needed ported heads to work properly. Thanks, Kyle.

He's referring to 87chrisss. He uses e85 and runs 30+psi on a stock long block. Big difference from a stock engine at 23-25psi. He's looking for 6's in the eighth. The 62 wheel he has is a much better pressure wheel than any of the older cast wheels commonly used.

 

[forcefed3.8's]

Talk to the TSA racers; I think they get up to 66mm wheels inside those stock appearing covers now.

The old TSS turbos were 66mm Q trim. Some factory housings can allow a 67mm wheel. The TSA cars can't get enough air into the turbo, so a 66 is a waste.

 

[jasjamz]

What you have now should be perfect.

 

[bison]

Talk to the TSA racers; I think they get up to 66mm wheels inside those stock appearing covers now.

You could get a 67mm inducer in one but there is no advantage to doing so since the diffuser is made for a much smaller wheel. A custom wheel with custom dimensions is needed to meet a good compromise with the stock compressor cover.

 

[bison]

Also is it possiable to build a TA (stock appearing) turbo to run those times (11.50-11.90's) on a conservative tune without maxing out the limitations of the turbo, to have room to grow for future upgrades ?

It's possible to run those times conservatively with an old cast ta49 on a lousy tune. A larger turbine could be used with a cast 60-1 compressor or billet wheel and work well into the 10's. The stock cover limits the potential of the wheel and requires a smaller exducer diameter with a slightly extended tip. The surge level will be lower as the exducer size shrinks while retaining the same inducer

 

[usetaboost]

Doesn't the stock compressor cover only support enough flow for somthing around 61mm?

 

[bison]

Doesn't the stock compressor cover only support enough flow for somthing around 61mm?

It depends on the compressor wheel design. There isn't much advantage to going larger than 61mm inducer with common wheels since the wheel design typically follows a typical pattern as the inducer size grows. The air stacks in the compressor housing and outlet because of the intercooler restriction. A higher pressure wheel that requires a lower amount of energy to drive to get the desired pressure ratio coupled with the correct turbine will give an advantage. The pressure ratio a TSA turbo sees are much higher than what anyone else typically sees at the power level they are running. The restriction at the intercooler inlet is tremendous. You have the air stack in the comp housing and the restriction at the intercooler inlet. That compressor is struggling big time with those limitations. The result is very high outlet temps and a huge pressure drop across a lousy intercooler core. Not good and gets worse as rpm increases.

 

[usetaboost]

^what you just said makes me want to get a good quality intercooler even more