Going single...need some advice on a setup
09-03-14, 03:47 PM
#54
the GT35 and the EFR 8374 are very different turbos. the GT35 is a small turbo. the EFR 8374 is a middle size turbo GT35 compressor size 6.38 average square inches area/ cast turbine size is 5.17 EFR 8374 compressor size 6.62/ Billet turbine 6.23......... plus 20.5% to the GT35 assuming both turbos can be driven to the 60% edge of their compressor maps... at 14.7 psi boost GT35 max power 420 EFR 8374 max power 460 at 20 psi GT35 440 EFR 8374 527 EFR at 40 psi boost 580 one of the significant benefits of the EFR is the larger hotside turbine wheel. the more efficient the hotside is the lower the EGT which pays dividends both in and out of boost. less chance of warped apex seals. the GT35 is a nice turbo but IMO the primary drawback is the smallish (80% of the cold side) hotside. since our motors require 30% more flow to make similar power to a piston engine and the exhaust is generally around 2-300 degrees hotter big hotsides work really well. Borg Warner generally offers better hotside options. the garden variety BW equivalent to the GT35 has a 6.31 inch turbine. plus 22% to the GT35. OE build quality. you won't go wrong w any of the aforementioned turbos but it will be important to pick a turbo that properly fits your objectives. howard
09-03-14, 07:41 PM
#55
Racing Rotary Since 1983
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"Howard how does billet pte6266cea compare to the above turbos?"
Precision doesn't provide compressor maps unlike Garrett and Borg Warner. i have no first hand experience w P and others on the forum would be better able to answer from experience.
hc
Precision doesn't provide compressor maps unlike Garrett and Borg Warner. i have no first hand experience w P and others on the forum would be better able to answer from experience.
hc
09-04-14, 02:01 AM
#57
My EFR 7670 maxed out at 369rwhp @ 26psi as I predicted from the compressor flow, but not for the reason I thought. I wasn't able to do a full 28psi run as I hit 100% duty cycle around 4,000rpm.
350ftlbs torque, 369rwhp on a dyno dynamics @ 26psi.
https://www.rx7club.com/single-turbo.../#post11796556
350ftlbs torque, 369rwhp on a dyno dynamics @ 26psi.
https://www.rx7club.com/single-turbo.../#post11796556
09-04-14, 07:18 AM
#58
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My EFR 7670 maxed out at 369rwhp @ 26psi as I predicted from the compressor flow, but not for the reason I thought. I wasn't able to do a full 28psi run as I hit 100% duty cycle around 4,000rpm.
350ftlbs torque, 369rwhp on a dyno dynamics @ 26psi.
https://www.rx7club.com/single-turbo.../#post11796556
350ftlbs torque, 369rwhp on a dyno dynamics @ 26psi.
https://www.rx7club.com/single-turbo.../#post11796556
Very nice. Speedjunkie and I were guessing his output was around 360-380WHP at about the same PSI. so we were close in our guesses.
09-28-14, 03:05 PM
#59
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Efr8374
Hey guys
Am going to be running the efr8374 with a front mount intercooler
Am thinking of getting this clutch
http://www.rx7store.net/product_p/zx6-xtr6.htm
Would it be a good clutch to run with it??
The goal is 460hp
I see the clutch is good for 577ftlb
Any info will help thanks
Am going to be running the efr8374 with a front mount intercooler
Am thinking of getting this clutch
http://www.rx7store.net/product_p/zx6-xtr6.htm
Would it be a good clutch to run with it??
The goal is 460hp
I see the clutch is good for 577ftlb
Any info will help thanks
09-28-14, 08:13 PM
#60
Senior Member
It'll be good for the power level, and then some.
But if you are using it on the street, you'd be better off looking at a clutch with a sprung hub.
The solid clutch disk has lower rotating mass and is better when shifting, especially downshifting, but if have to drive in any kind of traffic, you probably won't like it. They're just too harsh.
But if you are using it on the street, you'd be better off looking at a clutch with a sprung hub.
The solid clutch disk has lower rotating mass and is better when shifting, especially downshifting, but if have to drive in any kind of traffic, you probably won't like it. They're just too harsh.
09-29-14, 08:40 AM
#61
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It'll be good for the power level, and then some.
But if you are using it on the street, you'd be better off looking at a clutch with a sprung hub.
The solid clutch disk has lower rotating mass and is better when shifting, especially downshifting, but if have to drive in any kind of traffic, you probably won't like it. They're just too harsh.
But if you are using it on the street, you'd be better off looking at a clutch with a sprung hub.
The solid clutch disk has lower rotating mass and is better when shifting, especially downshifting, but if have to drive in any kind of traffic, you probably won't like it. They're just too harsh.
Ok thanks!!
Any recommendation??
I need something that if I deside Togo to the track one day it would hold.. But mainly a weekend car with power..
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