Head gasket question
Thread Starter
Teching In
Joined: Mar 2010
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Head gasket question Hey.
I am currently building a LS6 346 with AFR 210 V2.
Some of the build spec was given by Mamo himself, and he told me to go with 4.160 head gaskets to fit the heads.
The gaskets fit the heads great, but it might seems like their to big for the block?
it looks like they are not seeling over the steel sleeves in the block.
Is this okey, or do i have to get new smaller gaskets?
Best regards Tommy
I am currently building a LS6 346 with AFR 210 V2.
Some of the build spec was given by Mamo himself, and he told me to go with 4.160 head gaskets to fit the heads.
The gaskets fit the heads great, but it might seems like their to big for the block?
it looks like they are not seeling over the steel sleeves in the block.
Is this okey, or do i have to get new smaller gaskets?
Best regards Tommy
Thread Starter
Teching In
Joined: Mar 2010
Posts: 27
Likes: 0
But wont it be a problem to get good clamping load from the head to the liners/sleeves when the head gasket is not touching the liners/sleeves at all? Or does that not mather at all?
I can see there is no problem on a steel block but with an alu block w liners/sleeves might it be a problem?
Tommy
I can see there is no problem on a steel block but with an alu block w liners/sleeves might it be a problem?
Tommy
whenever you use heads that have a larger bore than your cylinders you have to get a gasket to match them..
For instance if you put 317 truck heads onto a ls1 engine you have to run ls2 head gaskets to match the heads. If you ran a gasket to match your block and ran a bigger set of heads then you would be blocking part of the combustion chamber in the heads..
For instance if you put 317 truck heads onto a ls1 engine you have to run ls2 head gaskets to match the heads. If you ran a gasket to match your block and ran a bigger set of heads then you would be blocking part of the combustion chamber in the heads..
But wont it be a problem to get good clamping load from the head to the liners/sleeves when the head gasket is not touching the liners/sleeves at all? Or does that not mather at all?
I can see there is no problem on a steel block but with an alu block w liners/sleeves might it be a problem?
Tommy
I can see there is no problem on a steel block but with an alu block w liners/sleeves might it be a problem?
Tommy
whenever you use heads that have a larger bore than your cylinders you have to get a gasket to match them..
For instance if you put 317 truck heads onto a ls1 engine you have to run ls2 head gaskets to match the heads. If you ran a gasket to match your block and ran a bigger set of heads then you would be blocking part of the combustion chamber in the heads..
For instance if you put 317 truck heads onto a ls1 engine you have to run ls2 head gaskets to match the heads. If you ran a gasket to match your block and ran a bigger set of heads then you would be blocking part of the combustion chamber in the heads..
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TECH Fanatic
Joined: Jun 2011
Posts: 1,343
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From: Katy, TX
I just went through the same thing with the 210 v2 heads. Their website says to use a 4.135" bore gasket, which seems big considering how it fits (see below). It probably doesn't matter, so I just bought the gaskets anyway.
head bore: 3.96x"
block bore: 3.905"
head bore: 3.96x"
block bore: 3.905"
TECH Fanatic
Joined: Jun 2011
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From: Katy, TX
Also, my scr calculation accounted for the gasket bore and thickness.
Last edited by RezinTexas; Sep 9, 2012 at 05:40 PM.
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
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From: Katy, TX
felpro 1041 is a 4.135" bore gasket
http://www.summitracing.com/parts/FEL-1041/
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
Go with what Tony Mamo recommends. If head bore is 3.96 so 4.135 is the way to go. You always accommodate the larger bore whether on head or block.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Bottom line is the 205 and the new 210 head can be run with a smaller bore gasket on a small bore engine of course (3.930 - 3.940 OD gasket is ideal IMO) but the reality is you can run a larger gasket.....its not really an issue besides the fact it will slightly, and I mean slightly lower the CR unless its accounted for in the static CR calculations.
The 215's and ALL the larger AFR Gen III heads we produce require the larger 4.135 bore gaskets to clear the chamber shape of our heads which are typically unshrouded on the larger heads to make room for the larger valves etc. In fact the AFR 245's require a 4.200 bore gasket to clear the chamber and large 2.165 intake valves.
If I told anyone differently I apologize.....I might have been thinking it was a 215 head we were discussing. I will get with Josh in the AM to make sure he is clear on this as well.
Thanks,
Tony
Last edited by Tony Mamo @ AFR; Sep 11, 2012 at 02:53 AM.