951 problems - liquid lock
11-07-2013, 09:44 AM
#31
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I dont treat 951 heads different than any other engine. If the head isnt true, or it has craters like the surface of the moon around the coolant passages, I send it to a machine shop and have them filled in and machined...organic or metal gasket.
I have heard of some people spraying copper gasket sealer or adding some silicone around the rectangular coolant port as a preventive measure, but Ive done a few without the extra sealant and never had a problem.
I have heard of some people spraying copper gasket sealer or adding some silicone around the rectangular coolant port as a preventive measure, but Ive done a few without the extra sealant and never had a problem.
The MLS gaskets did change they way a head is prepped. In the 'good old days' the theory was to leave some machining marks on the head to allow it to 'bite' into the head gaskets. MLS gaskets want as smooth a finish as you can get.
11-07-2013, 09:50 AM
#32
I dont treat 951 heads different than any other engine. If the head isnt true, or it has craters like the surface of the moon around the coolant passages, I send it to a machine shop and have them filled in and machined...organic or metal gasket.
I have heard of some people spraying copper gasket sealer or adding some silicone around the rectangular coolant port as a preventive measure, but Ive done a few without the extra sealant and never had a problem.
I have heard of some people spraying copper gasket sealer or adding some silicone around the rectangular coolant port as a preventive measure, but Ive done a few without the extra sealant and never had a problem.
11-07-2013, 10:11 AM
#33
Three Wheelin'
adding a little RTV at the rectangular cooling passage is a good idea on the MLS gaskets. That is a common leak point, usually just a small drip or two - but annoying anyway!
The MLS gaskets did change they way a head is prepped. In the 'good old days' the theory was to leave some machining marks on the head to allow it to 'bite' into the head gaskets. MLS gaskets want as smooth a finish as you can get.
The MLS gaskets did change they way a head is prepped. In the 'good old days' the theory was to leave some machining marks on the head to allow it to 'bite' into the head gaskets. MLS gaskets want as smooth a finish as you can get.
11-07-2013, 10:54 AM
#34
Rennlist Member
I used to run a copper head gasket on my turbo. Used the Hylomar sealant. I annealed and re-used that gasket 3 times and never had a problem.
Last edited by Van; 11-07-2013 at 11:39 AM. Reason: dumb thumbs
11-07-2013, 11:01 AM
#35
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11-07-2013, 11:32 AM
#37
Three Wheelin'
