Garrett Gt Series?which One?
02-10-2004, 11:54 PM
#41
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Originally Posted by rx7tt95' date='Feb 10 2004, 07:49 AM
Well they could make it at the flywheel but a more realistic and "safe" number for daily driving would be high 300's to low 400's on pump gas at 16psi at the rear wheels.
Honestly, I am in the same dilemma as you right now (well, something similar). I have a single turbo system with a turbo going bad. I ordered a GT40R BB turbo from A-Spec but unfortunately, it's not going to arrive as soon as I need it. So I am going with a plain bearing GT40. I would have even considered the 35/40 but it would require a new manifold due to the T3 style inlet. Precision knows their stuff and they build great turbos but I haven't talked to a single person there that knows rotary motors and their turbo requirements.
Honestly, I am in the same dilemma as you right now (well, something similar). I have a single turbo system with a turbo going bad. I ordered a GT40R BB turbo from A-Spec but unfortunately, it's not going to arrive as soon as I need it. So I am going with a plain bearing GT40. I would have even considered the 35/40 but it would require a new manifold due to the T3 style inlet. Precision knows their stuff and they build great turbos but I haven't talked to a single person there that knows rotary motors and their turbo requirements.
Man I getting a friggin head acke over this. And one more thing guys. THOSE GUYS FROM DYNAMIC TURBO ARE A BUNCH OF MORONS!!!!!THEY KNOW NOTHING!!!!******* IDIOTS!!!!......just a word from our sponsers!!
man I need to find this out before I come up for Daytona next month so I can buy my turbo.
That really hurts
02-11-2004, 12:12 AM
#42
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Posts: 255
out of curiousity, what is the purpose of the 500RWHP? are you aiming for a time? or are you aiming for dyno plot? (i'm just curious)
you keep saying that you want something that is good on the street but yet can produce 500...
what are you going to use the 500 for? drag? are you trying to do top speed runs? are you doing it on a technical track? circle track? long? short?
btw... its a GT35/40 (without the R)
you keep saying that you want something that is good on the street but yet can produce 500...
what are you going to use the 500 for? drag? are you trying to do top speed runs? are you doing it on a technical track? circle track? long? short?
btw... its a GT35/40 (without the R)
02-11-2004, 10:07 AM
#43
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Yes, I would stay away from Dynamic Turbo. Nuf said about them. 400rwhp equates into mid to high 400's at the flywheel. On race gas the PT67 would most definitely make more hp than a 35/40.
What manifold are you using? If it's a tubular-style manifold, you can go with the HKS GT or GTII which has V-band connectors.
If 500rwhp is really your goal (on race gas) and you still want decent spool up and transient response (on/off/on throttle) go with the entire A-Spec GT40R Ball bearing kit. www.A-spectuning.com It'll make as much if not more hp than the PT67 but it should have much better boost response and it uses a more efficient compressor. I believe that one of the options on the PT67 is the GT40's turbine (GTQ R or S, dunno). I would be confident saying this turbo will produce well over 500hp on race with a properly matched, well assembled street ported engine.
35/40 vs. the GT40R, the 35/40 will spool slightly faster but the GT40R will kill it on top. The ball bearing stuff is also much more durable than plain bearing and can actually take more abuse before the CRHA would fail. If you go with the complete GT40R kit from A-Spec, You're getting a quality full-divided manifold in stainless, V-band EVERYTHING, stainless downpipe and I believe you have a few options for wastegates, all with V-band inlet/outlet. And you're getting the hottest turbo out there. Do a search for the Garrett GT40R and you'll see that there are many, many groups in love with this turbo. Everyone from Audi performance guys to Hummers! No kidding...
What manifold are you using? If it's a tubular-style manifold, you can go with the HKS GT or GTII which has V-band connectors.
If 500rwhp is really your goal (on race gas) and you still want decent spool up and transient response (on/off/on throttle) go with the entire A-Spec GT40R Ball bearing kit. www.A-spectuning.com It'll make as much if not more hp than the PT67 but it should have much better boost response and it uses a more efficient compressor. I believe that one of the options on the PT67 is the GT40's turbine (GTQ R or S, dunno). I would be confident saying this turbo will produce well over 500hp on race with a properly matched, well assembled street ported engine.
35/40 vs. the GT40R, the 35/40 will spool slightly faster but the GT40R will kill it on top. The ball bearing stuff is also much more durable than plain bearing and can actually take more abuse before the CRHA would fail. If you go with the complete GT40R kit from A-Spec, You're getting a quality full-divided manifold in stainless, V-band EVERYTHING, stainless downpipe and I believe you have a few options for wastegates, all with V-band inlet/outlet. And you're getting the hottest turbo out there. Do a search for the Garrett GT40R and you'll see that there are many, many groups in love with this turbo. Everyone from Audi performance guys to Hummers! No kidding...
02-17-2004, 12:29 PM
#46
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Here is the Gt40(82) plain bearing turbo, .94 hotside. The GT40 plain bearing, from Garrett is only available with the 82mm compressor along with the .94 hot side. The 88mm can be had with the 1.34 stock or special order with the 1.19.
Here is the turbine exducer diameter (88mm)
Here is the turbine exducer diameter (88mm)
02-17-2004, 12:35 PM
#48
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turbine, .94a/r housing, 77mm turbine itself with a 73 trim. The 88mm compressor uses the same 77mm turbine but with a different trim, in this case an 84 trim. If it is true that the T04R uses the same compressor wheel (as does the PT67) then this should be a pretty decent turbo with the modern GT spec wheels.
02-17-2004, 12:53 PM
#49
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So, looking at the specs we absolutely KNOW:
GT40 (82) Inducer (inches) Exducer(Inches) Turbine major (inches)
58mm(2.283) 82mm(3.228) 77mm (3.0315)
GT40 (88) ?(will mesure) 88mm (3.4645) 77mm (3.0315)diff trim
PT67 66.5mm(2.62) 84.074 (3.310) 74.168(2.92)P or 78.994(3.110)GTQ
or 81.28(3.2) GTR spec
So none of the wheels match up at all to the PT67. They actually dont match up to ANY of the Precision turbos. I think theyre still using T series stuff for the PT line. But if it works....I do not know the correct specs on a T04R or if any/everyone is using the same specs. Feel free to copy/paste modify.
Indian, any of the major wastegates will work. HKS GTII with Vband, dare I say even GReddy type R, etc....Tial, yada, yada yada
GT40 (82) Inducer (inches) Exducer(Inches) Turbine major (inches)
58mm(2.283) 82mm(3.228) 77mm (3.0315)
GT40 (88) ?(will mesure) 88mm (3.4645) 77mm (3.0315)diff trim
PT67 66.5mm(2.62) 84.074 (3.310) 74.168(2.92)P or 78.994(3.110)GTQ
or 81.28(3.2) GTR spec
So none of the wheels match up at all to the PT67. They actually dont match up to ANY of the Precision turbos. I think theyre still using T series stuff for the PT line. But if it works....I do not know the correct specs on a T04R or if any/everyone is using the same specs. Feel free to copy/paste modify.
Indian, any of the major wastegates will work. HKS GTII with Vband, dare I say even GReddy type R, etc....Tial, yada, yada yada
02-17-2004, 06:50 PM
#50
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Originally Posted by rx7tt95' date='Feb 18 2004, 03:53 AM
So, looking at the specs we absolutely KNOW:
GT40 (82) Inducer (inches) Exducer(Inches) Turbine major (inches)
58mm(2.283) 82mm(3.228) 77mm (3.0315)
GT40 (88) ?(will mesure) 88mm (3.4645) 77mm (3.0315)diff trim
PT67 66.5mm(2.62) 84.074 (3.310) 74.168(2.92)P or 78.994(3.110)GTQ
or 81.28(3.2) GTR spec
So none of the wheels match up at all to the PT67. They actually dont match up to ANY of the Precision turbos. I think theyre still using T series stuff for the PT line. But if it works....I do not know the correct specs on a T04R or if any/everyone is using the same specs. Feel free to copy/paste modify.
Indian, any of the major wastegates will work. HKS GTII with Vband, dare I say even GReddy type R, etc....Tial, yada, yada yada
GT40 (82) Inducer (inches) Exducer(Inches) Turbine major (inches)
58mm(2.283) 82mm(3.228) 77mm (3.0315)
GT40 (88) ?(will mesure) 88mm (3.4645) 77mm (3.0315)diff trim
PT67 66.5mm(2.62) 84.074 (3.310) 74.168(2.92)P or 78.994(3.110)GTQ
or 81.28(3.2) GTR spec
So none of the wheels match up at all to the PT67. They actually dont match up to ANY of the Precision turbos. I think theyre still using T series stuff for the PT line. But if it works....I do not know the correct specs on a T04R or if any/everyone is using the same specs. Feel free to copy/paste modify.
Indian, any of the major wastegates will work. HKS GTII with Vband, dare I say even GReddy type R, etc....Tial, yada, yada yada
TO4R 63trim 66.7(2.626) 84(3.307) 74.2(2.92) 64.7(2.547) Ptrim cutback
35/40 63trim 66.7(2.626) 84(3.307) 64(2.519) 58.7(2.311) 84trim
GT40 (88) ?(64.6(2.544)) 88mm(3.464)