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01-23-2018, 04:36 AM | #26 | |
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SCIC
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Vehicle:2007 2.34LR, EFR7670 LINK G4+ hybrid STi |
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01-23-2018, 07:11 AM | #27 |
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It was stated they bite into the aluminum, if that is the case, how hard would they be if they can bite into the aluminum and still compress? Iron is a little harder than block aluminum. Maybe I should have asked if they are designed for sleeved setups.
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01-23-2018, 02:05 PM | #28 |
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Vehicle:2007 2.34LR, EFR7670 LINK G4+ hybrid STi |
I see. I thought stu was was talking about machining a receiver grove to accept the ring. Can't decide whether to O-ring or try these on my Benson block then.
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01-23-2018, 10:16 PM | #29 |
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Join Date: Oct 2002
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RMIC
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Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
That is a question for IAG, the rings are only grooved on one side and the grooves go towards the heads.
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01-23-2018, 10:41 PM | #30 |
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Hmm... so maybe the grooves just bite into the (known aluminum) heads to stabilize them once the heads are torqued. That would take the load off the surrounding composite. I'm sure someone from IAG will eventually explain all of the benefits. Hopefully this is a product that will allow a lot more higher power builds to survive.
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01-23-2018, 11:11 PM | #31 | |
Scooby Specialist
Member#: 25768
Join Date: Oct 2002
Chapter/Region:
RMIC
Location: CO springs
Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
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02-07-2018, 12:35 AM | #32 |
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MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
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02-07-2018, 09:11 AM | #33 | |
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02-07-2018, 10:13 AM | #34 |
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Sweet, I didn't realize JE finally started selling the fire ring gaskets...either that or I forgot. I did check out of Subaru stuff for a couple years while doing Ford's race engines.
I'll ping my sales rep at JE and get the run down. |
02-10-2018, 07:03 PM | #35 |
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I used Six Star. I've read bunch of people recommend Six Star.
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02-11-2018, 10:49 PM | #36 |
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Vehicle:2008 STi IAG built HTA86 E85 Kel272s Cos IM |
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02-12-2018, 02:27 PM | #37 |
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02-12-2018, 10:41 PM | #38 |
Scooby Specialist
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Join Date: Oct 2002
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RMIC
Location: CO springs
Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
These are MLS gaskets so not really any different than all the rest out there. Not really anything to do with this thread.
On a side note I have 100 miles on these guys and so far so good. 120 psi on all 4 cyl running Amsoil break in. |
02-13-2018, 01:03 PM | #39 |
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Join Date: Mar 2015
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International
Location: Ontario, Canada
Vehicle:2002 WRX Wagon EJ207 Spec C 4EAT |
i cant find these for EJ20. are they only for EJ25? i would like a set of these for when i rebuild my 207 and cram 40psi down its throat
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02-14-2018, 11:09 PM | #40 |
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Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
You would have to call either outfront or IAG.
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02-15-2018, 10:38 AM | #41 |
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gotcha, thanks!
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02-22-2018, 05:55 PM | #42 |
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Location: Holset baller on a budget.
Vehicle:08 WRX |
Anybody get some pulls with these unicorn gaskets? Curious to see how they handle over 35psi. Athena pn# OCONUS looks like 330040R.
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02-23-2018, 12:36 AM | #43 |
Scooby Specialist
Member#: 25768
Join Date: Oct 2002
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Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
I've only hit 23 so far but still on break in for another 1000 miles. So far so good.
Last edited by stu; 02-23-2018 at 02:41 AM. |
02-24-2018, 12:13 AM | #44 |
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Wife went out a made 743 on these headgaskets with no issues once we do some more breaking in she will be turning it up more.
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02-26-2018, 05:03 PM | #45 |
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^^^ that's awesome. what turbo?
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03-01-2018, 02:07 PM | #46 |
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Those composite gaskets with separate fire rings are 100% not manufactured by or associated with Fel-Pro.
Fel-Pro did just introduce new Performance head gaskets at PRI but they are MLS. http://www.felpro.com/technical/tecb...d-gaskets.html I have been running a pre-production set for about two years and in October of 2017 I took a trip out to their manufacturing and engineering facility to see some of the ways they test/validate the gaskets in the lab and then we ran some tests on my car to further validate the gaskets. All is well with them, hopefully I can finally jump on the E85 bandwagon and push them a bit harder this year. The Fel-Pro performance gaskets were benchmarked against all of the options available at the time of their development. I can't say who all that includes but I can confirm the Fel-pro set offer some advantages over the other MLS options. They wouldn't have bothered producing them and launching into an already saturated market if not. |
03-01-2018, 02:48 PM | #47 | |
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03-01-2018, 09:31 PM | #48 |
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03-02-2018, 01:53 AM | #49 |
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Join Date: Oct 2002
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Vehicle:2003 XONA 9569S 40++ 2.3 slobaru |
Why only running to 6000 rpm.
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03-02-2018, 09:41 AM | #50 |
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Vehicle:2008 STi IAG built HTA86 E85 Kel272s Cos IM |
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