SRM EFR7163 Eliminator Kit breaks 1000whp!
Backpressure ratio was 1.3 on the mustang graph, no changes were made between that and the dynojet.
I turned the gates up and we hit 1.7 on backpressure and made no more power, so I dialed them back.
I wish my damn proefi was logging, but it got weird and didn't. I'll make sure it's logged on Friday.
Valvetrain is stock, I have a set of cams that need to go in, but they won't be in for another week. Also have Ferrea pieces to add to it. Head will not be ported, so I'm somewhat limited, but the plan isn't to exceed 35psi. If anything, I'd like to achieve the same power at 32psi with cams in place.
I turned the gates up and we hit 1.7 on backpressure and made no more power, so I dialed them back.
I wish my damn proefi was logging, but it got weird and didn't. I'll make sure it's logged on Friday.
Valvetrain is stock, I have a set of cams that need to go in, but they won't be in for another week. Also have Ferrea pieces to add to it. Head will not be ported, so I'm somewhat limited, but the plan isn't to exceed 35psi. If anything, I'd like to achieve the same power at 32psi with cams in place.
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#TeamAIM
997TT SilverSpool - 210.8 mph 1/2 Mile WR Apr 2019, 9.2 @ 168 mph 1/4 Mile Manual World Record , 3.15 60-130 mph , 2.72 100-150 mph , 1400whp E85
996TT SpoolBus - 204.6 mph 1/2 Mile 996TT WR Aug 2018, 9.5 @ 154 mph, 3.23 60-130 mph, 2.5 100-150 mph Manual Porsche World Record, 1400whp E85
997TT SlowBerry - 205.0 mph 1/2 Mile WR Nov 2018, 9.7 @ 170 mph 1/4 Mile , 3.2 60-130 mph , 2.4 100-150 mph , 1420whp E85
ESMOTOR | DO88 | TPC DSC | SYVECS | COBB | IPD | KLINE | XONA | AMS | ID | ERP | SACHS | TURBOSMART | CSF | DODSON |
#TeamAIM
997TT SilverSpool - 210.8 mph 1/2 Mile WR Apr 2019, 9.2 @ 168 mph 1/4 Mile Manual World Record , 3.15 60-130 mph , 2.72 100-150 mph , 1400whp E85
996TT SpoolBus - 204.6 mph 1/2 Mile 996TT WR Aug 2018, 9.5 @ 154 mph, 3.23 60-130 mph, 2.5 100-150 mph Manual Porsche World Record, 1400whp E85
997TT SlowBerry - 205.0 mph 1/2 Mile WR Nov 2018, 9.7 @ 170 mph 1/4 Mile , 3.2 60-130 mph , 2.4 100-150 mph , 1420whp E85
ESMOTOR | DO88 | TPC DSC | SYVECS | COBB | IPD | KLINE | XONA | AMS | ID | ERP | SACHS | TURBOSMART | CSF | DODSON |
Yes, but since I'm on stock head, I don't plan on doing anything over 7800. Turbo heads tend to have issues at 8k and above. Cost for porting is a lot, so I may end up doing a GT3 head swap sometime down the line.
Last edited by dhahlen; Feb 24, 2016 at 10:56 AM.
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From: Raleigh NC
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GT3 cup heads don't have secondary air passages like the turbos, not that it matters since I have eliminated mine. Would need to source cams and all the other stuff. I am considering a GT3 head, but for what I'm after, the turbo head will probably be fine with some upgrades.
If someone had GT3 head, with cams, springs, etc ready to go for the right price.. I'd be hard pressed to pass it up.
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From: Raleigh NC
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literally they were for sale when i posted that.
Had i owned a 911 right now i would have been the one to snag it but i'm still trying to decide if i want to go with a 996 on the lower end of the quality scale (not dissing 996s but saying get one with questionable records) and build the crap out of it or get a 997 that's been well taken care of doing a chip exhaust and intercoolers and calling it a day.
Had i owned a 911 right now i would have been the one to snag it but i'm still trying to decide if i want to go with a 996 on the lower end of the quality scale (not dissing 996s but saying get one with questionable records) and build the crap out of it or get a 997 that's been well taken care of doing a chip exhaust and intercoolers and calling it a day.
No such thing.
I prefer the 997 over the 996 for a number of reasons, price not being amongst them, though.
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From: Raleigh NC
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Oh i completely agree. Nearly everything is better but having a spare 30k for engine work and turbos... that's the difference.
And yes... i had a big turbo subaru so i'm familiar with the boost addiction.
1. do what i mentioned above.
2. turbo failure.
3. bigger turbos.
4. worry about engine until you build it.
5. now that engine is built i can run bigger turbos.
6. boost threshold is a little high now, i either need more rpm or displacement
7. cams/head work.
8. bigger turbos.
9. stroker.
10.... bigger turbos?
And yes... i had a big turbo subaru so i'm familiar with the boost addiction.
1. do what i mentioned above.
2. turbo failure.
3. bigger turbos.
4. worry about engine until you build it.
5. now that engine is built i can run bigger turbos.
6. boost threshold is a little high now, i either need more rpm or displacement
7. cams/head work.
8. bigger turbos.
9. stroker.
10.... bigger turbos?
I did redyno it, but didn't get the graphs as I had a hydraulic line burst.
It's all been fixed, but now it's down for headwork, cams, etc.
Last run it made was 1087hp/1044tq at 35psi.
That dip at the end was due to the wg pulling duty cycle as we had the boost threshold set to low and it was the ECU removing boost.
I should have it back on the dyno in 3-6 weekends, depending on the schedule with SRM, they have a few customers in front of me.
It's all been fixed, but now it's down for headwork, cams, etc.
Last run it made was 1087hp/1044tq at 35psi.
That dip at the end was due to the wg pulling duty cycle as we had the boost threshold set to low and it was the ECU removing boost.
I should have it back on the dyno in 3-6 weekends, depending on the schedule with SRM, they have a few customers in front of me.
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Joined: Aug 2009
Posts: 1,745
From: KUWAIT
Rep Power: 170
I did redyno it, but didn't get the graphs as I had a hydraulic line burst.
It's all been fixed, but now it's down for headwork, cams, etc.
Last run it made was 1087hp/1044tq at 35psi.
That dip at the end was due to the wg pulling duty cycle as we had the boost threshold set to low and it was the ECU removing boost.
I should have it back on the dyno in 3-6 weekends, depending on the schedule with SRM, they have a few customers in front of me.
It's all been fixed, but now it's down for headwork, cams, etc.
Last run it made was 1087hp/1044tq at 35psi.
That dip at the end was due to the wg pulling duty cycle as we had the boost threshold set to low and it was the ECU removing boost.
I should have it back on the dyno in 3-6 weekends, depending on the schedule with SRM, they have a few customers in front of me.
Will wait your next thread
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Joined: Oct 2015
Posts: 66
Rep Power: 18
What's the deal with a GT3 head on the 997.1 turbo bottom end? Are you direct swapping it on without any modification? I did not know that was possible. How are springs of an NA GT3 head holding up to high boost? Very strange that it would just be a swap, very surprised.
What's the deal with a GT3 head on the 997.1 turbo bottom end? Are you direct swapping it on without any modification? I did not know that was possible. How are springs of an NA GT3 head holding up to high boost? Very strange that it would just be a swap, very surprised.
The problem with the factory stuff is it's not designed for revving much over 7400. I was shifting at 7800 myself, so a spring gave way.
The GT3 heads also flow much better than the turbo head.
You can swap in the ferrea stuff as well to beef it up for big power, which would be recommended. No reason to just slap a stock head on if you're after 1000+ hp and doing it anyway.