Hey yall, I did some searching but I couldn't exactly find what I needed: I am doing a TT 2.8 project as a precursor to a TT 305/350 car. I am trying to build a setup that I can use in both cars. My goal is to get 600 HP from the V8. Would 2 .60 T3s get the job done (w/ or w/o intercooler?)??? Also, what type of HP could I expect from the 2.8?

Thanks for any help.

Sorry, I haven't read "the books" yet; they're on the way.

MILT

 

2 T-3 .60/.63 on a 350...600hp no prob

 

im not sure if youre referring to the t3's from ford turbocoupe/xr7/svo's. if you are, you could get a relatively light car into the nines. Bryan Sharer did it in a fairmont with a stock short block 302, the t3s are gonna give you tons of torque down low on a 350 so keep your cam and rpm moderate.

as far as being able to use the kit on the v6 and the v8, good luck. it might be able to be done, but meeting the criteria of placement of the turbos is gonna be a huge pain in the ***, when you dont have a 350 in the car to check clearances.
i guess you could hang them up by where the battery was, on either side.


adam

 

I'm not sure of the type of turbos. I saw them on a site (can't find the link now) remanufactured for like $450/ea. They were .60/.48 IIRC. I know I need to read up on the issue, but it seems like there are quite a few T3 .60/.48 size turbos (gm, ford, etc). The turbos could be ordered w/ adj wastegates for boost levels of either 5-7 or 12-15. I am guessing I would want the 12-15 pounds of boost, correct?

Anyhoo, I wanted the T3 w/ the internal wastegates. I am currently working on a SBC "header-log" for a TT setup. I am scrapping the V6 option; though I may go back to it later.

So basically I want 500-600 HP; and I figure the TT setup will help it come in a decent rpm range as well. I've got a T56 car, so I don't need to worry about converters and that stuff.

Thanks for any help.

MILT

 

Two T-3 with the .63 A/R should be on the ragged edge of 600 hp with decent heads. With a good set of heads, you can turn the boost up higher and make more power. On compressor maps keeping efficiency the same you can increase boost with increased flow. You can get super 60 trim compressors that will pump more air, but the exhaust is still gonna be a little restrictive. Check out turbonetics.com for all kinds of compressor maps.

Remember that total MASS air flow is determined by the lowest flowing part of the engine. Most of the time, it's the heads. Some of the time it's the turbine or compressor. Mass flow, volumetric flow, and boost, while related mean completely different things. My recomendation is get the heads flowed in pounds mass per minute, not cubic feet per minute, at the boost level and temp you want to run, which will be directly related to your compression ratio and intercooler efficiency. If you can't get lbm/min, then you can do a conversion from CFM, but you have to have the pressure and temperature where it was measured. Then size the turbos based on that. If you can't get that done, you can always use the hillbilly guess and check. Most of the time it's less expensive in the long run to do a little math and planning.

Thirdly, the exhaust manifold or header that you use will determine the A/R of the turbine and the wheel trim as well as if it's a split housing. Your books will go into more detail.

When all else fails, just do what someone else did.

 

you know, the funny thing is that 2 60trim T3 compressors would come very close to being good setups for both engines. The problem would be that with the small V6 you’d have a hard time getting the turbine housings on them small enough to spool well. There’s also little if any chance that you’ll have luck transferring anything from one setup to the other.

WRT to what they can feed, if the pressure ratio stays over 2 they can pump enough air to make something in the low 700hp range.

 

Well, I figure I'd run a similar setup on both engines using the same turbos.

Relocate battery to trunk, turbos mounted towards the front of the wheelwells. Use a 2-pc pipe setup from engine to turbo. Piece one is the header that extends past the acc setup. Piece 2 bolts to pc 1 and mounts to the turbo. Piece 2 would be universal for V6 and SBC. The exhaust would probably be universal as well, and bent to conform to stock-type y-pipe.

Intercooler setup may be transferrable, but haven't thought too much about it yet.

I figured the .60/.48 would be a good compromise for tt setup on either a V6 or a V8. The .48 housings could eventually be replaced w/ .63 housings for more power on the V8 setup.

Sound good?

MILT