North American Turbocoupe Organization



Turbo Question
RDOG Offline
Posting Freak
#1
I went out and picked up a T3 to replace my IHI. I got it from a 86 TC with a 5 speed (rebuilt). Dave at Tiny Avenger told me to make sure the rear housing has .63 stamped in it. I got the .63 but another guy just told me that I should continue to use a .48 rear housing. Who is right. Need to know before I install it.
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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Pete D Offline
Administrator
#2
It doesn't make any difference as far as installing it. I have the .48 on my 88.
The .48 spools a little quicker than the .63.
The .63 probably makes a little more power on the top end.

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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.

[This message has been edited by Pete D (edited 09-30-2001).]
Pete Dunham


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RDOG Offline
Posting Freak
#3
I know installation is the same, I just want to make sure I am getting more power. With the .48 having quicker response at what RPM range does initiate boost and at what piont do I reach max boost? By going with the.63 does that mean I will generate more top end power with a not so noticeable low end loss?
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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Noname
Guest
#4
If you got it off a 86 TC then you have a .63 ar exaust ratio. As for more power the difference between the 2 is very small, you will notice a big differance btw the ihi and t3. But if you had a choice i would go with a .48 for street applications. and for boost levels under 20 psi.
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