67mm=700hp???
02-20-2008, 06:53 AM
#21
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ive got a buddy of mine that has a 55mm turbo, he is saling, can i use that and my 67mm together, or would that be to odd ball. keep in mind my goal is 700hp+. so by making it twin turbo, will that help out at all or no? also he is saling it to me for $200, an its a garrett. Good deal or no???????
02-20-2008, 11:42 PM
#22
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so what would some of you guys say to puting another turbo on, it maybe alittle smaller, but would that matter. an would it help me to reach my goal of 700hp
02-21-2008, 12:58 AM
#23
I would go with a T76 and be done with it. With a T76 @16PSI I made 581rwhp uncorrected at over 6000' elevation, corrected to sealevel was 712rwhp. Im running through a 4L80E, and a transfer case. You should be able to get your 700 easy with a 76. You might need to upgrade to 68lb injectors though.
02-22-2008, 06:47 AM
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id have to sale my t67, i wish i had 1000 bucks so i could by a t76. how much could i get for my t67 that doesnt have over 500miles on it? does anyone have a t76 they wana sale or anything that would help?
02-22-2008, 05:40 PM
#25
You probably get much for it. I have a new t66 in the box and I can't get anything for it.
If I were you I would get my setup finished, and try the 67. It my make 700@ sea level. If not it should go low to mid 600's, and you may not tear up as many parts at first.
A honest 625-650 with good spool, and good low end power just might run just as quick in your car as a laggy, high RPM setup.
If I were you I would get my setup finished, and try the 67. It my make 700@ sea level. If not it should go low to mid 600's, and you may not tear up as many parts at first. A honest 625-650 with good spool, and good low end power just might run just as quick in your car as a laggy, high RPM setup.
02-22-2008, 06:44 PM
#26
So how fast did the 370 with a "max'd out" 4276 go? If it were anything less than 150, there was something very wrong. Most know that I've gone 146 at full weight with my T76GTS at minimum boost on 388 cid. Also, there are plenty of solid 8 second Mustangs running either the 76GTS or GT4276.
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
FYI there is a HUGE thread on Yellowbullet about the GT42-76 and even the mustang guys saying stay below 347 cubes with it....... it running out of steam wayyy early...... Im not the only one...........
Brother its SELL, not sale......
Try with what ya got 1st and see where it gets you, then go from there.....
Or put it up for Sale........ only one way to find out.....
Kyle
02-25-2008, 08:57 PM
#27
I'm going to make one last post about this and then give up.
The GT4276 will support more power than my T76GTS. The 76GTS has a very similar compressor and the same exhaust wheel, but cut down. The GT42 has a larger exhaust housing too. Soo. . . my T76GTS should support less power and less cid than the GT4276. But. . . I still manage 17 psi on 388 cid with the 40mm wastegate WIDE OPEN and pull easy 9's at 146 mph in the quarter at full stock weight+++. I've easily (on accident) been past 22 psi too and have the blown head gaskets to prove it. How can you see my results plus countless others making 20 psi with T4 76's on large cid's and still maintain that the GT4276 max's out at 13 psi on only 370 cid??? What's your explanation on how my car works?
Then, to add to all this, a while back I reduced my displacement down to 360 cid after reading lots of posts about how the 383 is choking on the T76. The car went slower at less mph. I added the cid back next chance I got and the car picked up 3 mph and .5 seconds.
Mike
02-26-2008, 01:42 AM
#28
I've had experience similar to engineermike once I worked out the bugs in my setup. I was making great power at 17-20psi on the .96 a/r housing with my ITS R trim turbine T76, wastegate was wide open as well and I had seen 22psi at one point.
I can't wait to see what the ST80 does.
I can't wait to see what the ST80 does.
