What's the largest T4 turbo that would drop in where my TC76 is now?
08-22-2010, 09:29 AM
#1
What's the largest T4 turbo that would drop in where my TC76 is now? Just tossing ideas around in my head. I made a front mount kit on my GTO and currently have a TC76 with a F1/.96 hot side. What would be some larger turbos that would be relatively close in physical size? Is there anything that would have a bigger hot side that would be worth while? Or maybe a different cold side cover? The 68mm turbine on my TC is just so small, great for spool but it's rough up top on a 370ci. PTE76 a worthwhile upgrade? Trapping 134-136 on the TC76 now with 4200lb race weight, would like to be in the 140s.
Last edited by HydroStream6; 12-09-2010 at 05:53 PM.
08-22-2010, 09:41 AM
#2
The Turbonetics turbos all use the same turbine. The compressor is what changes. So if you wanted to step it up to a T, GTM, or Super T, you could. If you have room around your current compressor housing. You could send it to Forced Inductions and get it upgraded also.
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09-01-2010, 09:46 PM
#8
Just tossing ideas around in my head. I made a front mount kit on my GTO and currently have a TC76 with a F1/.96 hot side. What would be some larger turbos that would drop right in and line up with my down pipe and what not? Is there anything that would have a bigger hot side that would be worth while? Or maybe a different cold side cover? I'm not out of turbo yet but just getting ideas going...
12-09-2010, 05:51 PM
#9
Still thinking about this. PTE76 or 78 is top of my list at the moment. I'm having a hard time finding solid track/dyno numbers from them on a 370ci though. Looks like the turbine is 75mm compared to my 68mm in my current unit. Not sure if that'll be enough though. Thoughts? I'd like to be in the 140s in my 4200lb+ car.
My poor little TC is just about out of breath I think. Can't complain though, 136mph in a 4200lb+ pig and spools instantly haha.
My poor little TC is just about out of breath I think. Can't complain though, 136mph in a 4200lb+ pig and spools instantly haha.
12-09-2010, 07:05 PM
#16
same boat as you trying to get more turbine than what i have now out of my tc78 on a 370
only thing that will be physically even in the same realm for size with a bigger turbine will be the GTS wheeled turbos or the Comp 80/79 with the 100 trim straight cut turbine
I am lazyand dont feel like having to change anything, so i am just sending my turbo to Comp and having them cut a 1.32 hotside to fit the tc78. and see the results of that
had been thinking of trying a clip on the current turbine but can't find enough info of it being done on larger turbos to take the plunge
and the BW T4 stuff is still HUGE compared to the TC
only thing that will be physically even in the same realm for size with a bigger turbine will be the GTS wheeled turbos or the Comp 80/79 with the 100 trim straight cut turbine
I am lazyand dont feel like having to change anything, so i am just sending my turbo to Comp and having them cut a 1.32 hotside to fit the tc78. and see the results of that
had been thinking of trying a clip on the current turbine but can't find enough info of it being done on larger turbos to take the plunge
and the BW T4 stuff is still HUGE compared to the TC
12-09-2010, 07:45 PM
#18
same boat as you trying to get more turbine than what i have now out of my tc78 on a 370
only thing that will be physically even in the same realm for size with a bigger turbine will be the GTS wheeled turbos or the Comp 80/79 with the 100 trim straight cut turbine
I am lazyand dont feel like having to change anything, so i am just sending my turbo to Comp and having them cut a 1.32 hotside to fit the tc78. and see the results of that
had been thinking of trying a clip on the current turbine but can't find enough info of it being done on larger turbos to take the plunge
and the BW T4 stuff is still HUGE compared to the TC
only thing that will be physically even in the same realm for size with a bigger turbine will be the GTS wheeled turbos or the Comp 80/79 with the 100 trim straight cut turbine
I am lazyand dont feel like having to change anything, so i am just sending my turbo to Comp and having them cut a 1.32 hotside to fit the tc78. and see the results of that
had been thinking of trying a clip on the current turbine but can't find enough info of it being done on larger turbos to take the plunge
and the BW T4 stuff is still HUGE compared to the TC
I wanna put an S475 in there so bad, but I think I'd have to lose my hood and front end to get it to fit, lol.
12-09-2010, 07:49 PM
#19
I do street drive it so I do wanna figure out something for a filter.
12-10-2010, 12:46 PM
#20
