G30-660 any good for 350rwhp street?
#26
Full Member
iTrader: (3)
Nope...
But because the streetport engine was dead Im not judging the G30-660 streetport dyno as indicative of the turbo's capabilities on a 13B
It only made 100rwhp Dynojet at 3,000rpm in a 2,000rpm pull.
Far behind an EFR 7670 which are 175rwhp @ 3,000rpm.
this G30-660= 180ftlbs torque @ 3,000rpm
EFR 7670= 300ftlbs torque @ 3,000rpm
Again looking forward to seeing G30-660 results on healthier set-ups.
But because the streetport engine was dead Im not judging the G30-660 streetport dyno as indicative of the turbo's capabilities on a 13B
It only made 100rwhp Dynojet at 3,000rpm in a 2,000rpm pull.
Far behind an EFR 7670 which are 175rwhp @ 3,000rpm.
this G30-660= 180ftlbs torque @ 3,000rpm
EFR 7670= 300ftlbs torque @ 3,000rpm
Again looking forward to seeing G30-660 results on healthier set-ups.
Edit: Reading on my phone… You did acknowledge the engine condition from the jump… My b!!
Last edited by cstone94; 03-29-23 at 10:14 PM.
#27
10000 RPM Lane
iTrader: (2)
it made 434 whp DJ at 17 psi in the initial build phase with a less than optimum engine condition.
In your initial build phase the EFR7670 only made 419 whp DJ at a much higher 26 psi.
And apparently still haven’t picked up on the turbine housing differences that I’ve had multiple conversations with the wall on for the last two years. Otherwise it might have been recognized that the Pulsar 0.85 A/R div T4 housing is going to be a closer equivalent to the BW 1.05 A/R housing that was on the EFR7670.
To put it in perspective, the G30 1.06 housing is a closer fit to the EFR8374 0.92 housing. That’s why I chose the -770 compressor for the build I’m working on.
To be fair, I doubt they will spool up quite as fast as the EFR at the very bottom, but how close and whether it will matter is yet to be determined.
The size dimension differences allow the G30 to fit easier and also with more separation from the LIM if it’s done right. That didn’t seem to get much consideration on the manifold that was posted up. There are also likely to be differences between them that aren’t discernible on a dyno graph.
While I’m on my soapbox, let me clarify that a V-band is still a single scroll. The differences between single and twin scroll didn’t suddenly vanish when the V-band version showed up. On the G30/35 it’s still only a single 2” pipe size. So you’re merging two 2” pipe sizes into a single one and so far nobody is using a divider to shield them from interfering with and crossing over each other.
.
In your initial build phase the EFR7670 only made 419 whp DJ at a much higher 26 psi.
And apparently still haven’t picked up on the turbine housing differences that I’ve had multiple conversations with the wall on for the last two years. Otherwise it might have been recognized that the Pulsar 0.85 A/R div T4 housing is going to be a closer equivalent to the BW 1.05 A/R housing that was on the EFR7670.
To put it in perspective, the G30 1.06 housing is a closer fit to the EFR8374 0.92 housing. That’s why I chose the -770 compressor for the build I’m working on.
To be fair, I doubt they will spool up quite as fast as the EFR at the very bottom, but how close and whether it will matter is yet to be determined.
The size dimension differences allow the G30 to fit easier and also with more separation from the LIM if it’s done right. That didn’t seem to get much consideration on the manifold that was posted up. There are also likely to be differences between them that aren’t discernible on a dyno graph.
While I’m on my soapbox, let me clarify that a V-band is still a single scroll. The differences between single and twin scroll didn’t suddenly vanish when the V-band version showed up. On the G30/35 it’s still only a single 2” pipe size. So you’re merging two 2” pipe sizes into a single one and so far nobody is using a divider to shield them from interfering with and crossing over each other.
.
Last edited by TeamRX8; 03-29-23 at 10:14 PM.
#29
10000 RPM Lane
iTrader: (2)
should be pretty good imo
you could even look at the G35-900 with the Pulsar PTG35 0.85 div T4 housing rather than the G30 turbos for the lower hp range, it should flow about what the G30 1.06 will, but is likely not the best response for autocross on E85 etc.
the estimates for my rationale:
.
.
or alternatively the G40-900 with 0.84 A/R for less emap
.
you could even look at the G35-900 with the Pulsar PTG35 0.85 div T4 housing rather than the G30 turbos for the lower hp range, it should flow about what the G30 1.06 will, but is likely not the best response for autocross on E85 etc.
the estimates for my rationale:
.
.
or alternatively the G40-900 with 0.84 A/R for less emap
.
Last edited by TeamRX8; 04-02-23 at 05:50 PM.
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