Aftermarket head gaskets for FA20 - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Matt@Cosworth · 09-20-2016, 10:22 AM

hi they should be ready for SEMA and we will offer std (0.78), 1.05mm & 1.45mm

works out as follows:
so stock = 12.5:1
1.05 = 12.1:1
1.45 = 11.6:1

mav1178 · 11-16-2016, 10:25 PM

Got the head gaskets in... we'll see if the price makes sense.

-alex

Fizz · 11-17-2016, 03:15 AM

Quote:

Originally Posted by Matt@Cosworth

hi they should be ready for SEMA and we will offer std (0.78), 1.05mm & 1.45mm

works out as follows:
so stock = 12.5:1
1.05 = 12.1:1
1.45 = 11.6:1

Any further update on this? What are the cons to reducing CR with head gaskets?

celek · 11-17-2016, 10:37 AM

Quote:

Originally Posted by Fizz

Any further update on this? What are the cons to reducing CR with head gaskets?

Cons are limitation due to a fixed Chain length but plenty of slack for adjustment.
Lower compression is designed for forced induction. In the NA platform no benefit.

Fizz · 11-17-2016, 08:41 PM

Quote:

Originally Posted by celek

Cons are limitation due to a fixed Chain length but plenty of slack for adjustment.
Lower compression is designed for forced induction. In the NA platform no benefit.

I'm currently running turbo kit on pump 98. This may be a cost effective way of reducing some compression without going for a full bottom end rebuild. And with the heads out it would also be a good time to upgrade the valve springs which is also fairly cost effective. So yes very interested if this will work

bhmax · 06-10-2019, 11:49 AM

Looking for some head gaskets. Any feedback on Cosworth gaskets? Looks like they were discontinued, but some are still available.

bhmax · 01-17-2020, 11:17 AM

Still looking for feedback on head gaskets. I had them replaced last year with Cometic and it seems I’ve now blown one of those.

tomm.brz · 01-17-2020, 11:27 AM

i just put Cosworth 1.05mm in mine
all good

11-16-2016, 10:25 PM	#16
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,099 Times in 3,030 Posts Mentioned: 95 Post(s)	Got the head gaskets in... we'll see if the price makes sense. -alex Attached Images

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09-20-2016, 10:22 AM	#15
Matt@Cosworth Senior Member Join Date: Dec 2015 Drives: blue - Cosworth SC stage 3.0 Location: Northants - UK Posts: 333 Thanks: 3 Thanked 395 Times in 185 Posts Mentioned: 34 Post(s)	hi they should be ready for SEMA and we will offer std (0.78), 1.05mm & 1.45mm works out as follows: so stock = 12.5:1 1.05 = 12.1:1 1.45 = 11.6:1

06-10-2019, 11:49 AM	#20
bhmax Senior Member Join Date: May 2015 Drives: 13 BRZ, 17 Focus RS Location: AL Posts: 303 Thanks: 380 Thanked 98 Times in 70 Posts Mentioned: 2 Post(s)	Looking for some head gaskets. Any feedback on Cosworth gaskets? Looks like they were discontinued, but some are still available.

01-17-2020, 11:17 AM	#21
bhmax Senior Member Join Date: May 2015 Drives: 13 BRZ, 17 Focus RS Location: AL Posts: 303 Thanks: 380 Thanked 98 Times in 70 Posts Mentioned: 2 Post(s)	Still looking for feedback on head gaskets. I had them replaced last year with Cometic and it seems I’ve now blown one of those.

01-17-2020, 11:27 AM	#22
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,292 Thanks: 517 Thanked 1,125 Times in 815 Posts Mentioned: 70 Post(s)	i just put Cosworth 1.05mm in mine all good

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