when to use an mls head gasket.

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when to use an mls head gasket.

Post  torino501 on June 15th 2013, 7:01 pm

at what compression would it be a good idea to use the mls gaskets instead of the felpro 1018 gasket...?

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Re: when to use an mls head gasket.

Post  Lem Evans on June 16th 2013, 1:32 pm

It'd depend a lot on the cyl. head.....that style gasket [1018] will hold big compression with an iron block and heads.

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Re: when to use an mls head gasket.

Post  torino501 on June 16th 2013, 4:53 pm

blue thunders,iron block. 13.5 comp ratio. my 1018's just blew between the cyls.

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Re: when to use an mls head gasket.

Post  torino501 on June 16th 2013, 4:55 pm

...also are you supposed to re torque the felpros?

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Re: when to use an mls head gasket.

Post  Lem Evans on June 16th 2013, 4:57 pm

torino501 wrote:...also are you supposed to re torque the felpros?
It'd help a lot to retq. after a heat cycle.

Was the tuneup safe?

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Re: when to use an mls head gasket.

Post  jason on June 16th 2013, 5:02 pm

When ya retorque them do ya mark them, loosen them and retorque or just try getting more on them where they are?
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Re: when to use an mls head gasket.

Post  Lem Evans on June 16th 2013, 5:03 pm

Loosen and pull back up i.m.o.

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Re: when to use an mls head gasket.

Post  torino501 on June 16th 2013, 5:17 pm

I would venture to say probably not.... it was throw together bout 10 yrs ago.never really tuned it properly.couldnt keep a trans together no more than a couple wide open shifts and it would lay down.it was an all wrong build up.it has a 1250 dommy on it out of the box I would have thought it had enough jet out of the box.i have the money to build it right this time as long as I don't have any piston damage.

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Re: when to use an mls head gasket.

Post  bbf-falcon on June 16th 2013, 10:35 pm

imo it was probably more of a deal where gaskets were old and deteriating from age.But,when you refresh I would check deck surface and heads over well. Wouldn't be abit afraid to put new 1018's on it again. Hell,I have reused them on other builds before in a pinch w/o a problem.

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Re: when to use an mls head gasket.

Post  torino501 on June 17th 2013, 7:07 am

what kind of deck finish should there be for the 1018's and the mls gaskets for that matter...?

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Re: when to use an mls head gasket.

Post  Wheelie58 on June 17th 2013, 7:26 am

The MLS gaskets require a very smooth, flat finish of a 50 RA (roughness average). 1018 type gaskets seem to like a slightly rougher finish. Here is a link to Cometic's web...tech..http://www.cometic.com/technical.aspx
I can assure you that MLS types will leak water with a rough finish.
My 14 to 1 Blue Thunder 514 has worked great with 1018s for many years...no retorque..
Keith 


torino501 wrote:what kind of deck finish should there be for the 1018's and the mls gaskets for that matter...?
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Re: when to use an mls head gasket.

Post  torino501 on June 17th 2013, 10:45 am

thanks for the feed back kieth. i thought ive heard the 1018's were pretty tough.looks like this goround i really need to pay attention to detail.

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