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post #1 of 5 Old 09-09-2009, 02:43 PM Thread Starter
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Do you have an O-ringed block? come on in

my new motor build is currently in an O-ringed block and im trying to decide what head gaskets to run i have got many diffrent opinions from local shops but im trying to see whats working for people out there currently running O-ringed blocks. I've hears to leave the wire in use a copper gaskets with lots of RTV,or to just leave the groove in the block pull out the wire and run a cometic.i dont want anything im gonna have rip back apart for leaks so im trying to stay away from copper and really dont want to get my heads machined with a receiver groove but i heard thats an option you dont have to with an Oringed block

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post #2 of 5 Old 09-09-2009, 09:00 PM
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O-ringed block here. I did it myself.

I *think* if you run copper gaskets with an o-ringed block you will need a receiver groove in the heads.

I run o-ringed block with stainless wire and use regular old felpro gaskets #8548 pt-2 (about $30 for em). My o-ring is directly on the fire ring and is crushed up into it when the heads are bolted down.

Since o-ringed I haven't had any problems. Some say it's old school, but it WORKS.

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post #3 of 5 Old 09-10-2009, 07:35 AM Thread Starter
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Originally Posted by 94cobra2615 View Post
O-ringed block here. I did it myself.

I *think* if you run copper gaskets with an o-ringed block you will need a receiver groove in the heads.

I run o-ringed block with stainless wire and use regular old felpro gaskets #8548 pt-2 (about $30 for em). My o-ring is directly on the fire ring and is crushed up into it when the heads are bolted down.

Since o-ringed I haven't had any problems. Some say it's old school, but it WORKS.
i was thinking that too just leave the wire in and use like a MLS headgasket or cometic thats thick enough so the Oring dont cut all the way through the gasket just enough to bite into it when torqued...i really dont want to O-ring my new heads to use copper gaskets plus copper gaskets leak to much no matter how much RTV you use and you always have to retorque them

95 Mustang-Let's just say it's a stock 302 with some bolt on's who really needs all the details
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post #4 of 5 Old 09-10-2009, 07:25 PM
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The felpro gaskets i use are just graphite.

You'll need to measure how high the o-rings are above the deck surface. That'll probably determine what gasket you use.
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post #5 of 5 Old 09-12-2009, 01:07 AM
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I run an o-ringed block. It's all about who did the work and where they cut the groove. I had mine setup to run 1011-2 felpro gaskets. Do yourself a favor and stay away from the cooper head gaskets for street use. I have seen too many of them that seap. As stated above, just checkand make sure the o-ring is crushing the fire ring on the gasket.

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