symptoms of lifting head?

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Jun 6, 2004 | 12:19 AM

#21

Pro Stock John

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From: Chicago, IL

I run the MLS 6.0 head gaskets, got the idea from Harlan, my longblock is similar to his setup from a year ago.

Jun 6, 2004 | 04:39 AM

#22

1dirtyZ

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From: the not so stock tribe

thanks for the info, any idea on the thickness of the MLS gaskets?

Jul 22, 2004 | 07:17 PM

#23

Billiumss

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From: Erie, PA

I'd like to know too...

Jul 22, 2004 | 09:03 PM

#24

MYTURBOT/A

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From: orlando, florida

The rad cap is suppose to be under pressure if it isn't the cooling system won't work right. FYI the 6.0 head gasket thickness is .055 according to GM.

Jul 22, 2004 | 10:15 PM

#25

MelloYellow

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From: Centrifugal City

Just had this same problem with Cometic MLS's on my new motor.
They are off and will never touch my car again.

Also had an earlier Cometic failure after 1 year on motor.
They just don't always seal up well.

Am using GM MLS from now on.

Last edited by MelloYellow; Jul 23, 2004 at 02:29 AM.

Jul 22, 2004 | 10:29 PM

#26

MYTURBOT/A

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From: orlando, florida

When I was getting ready to do my head swap i talked to cometic and they said themselves that they were having sealing problems with there HP gaskets and were working to resolve it. So i went with the stock MLS.

Jul 23, 2004 | 02:30 AM

#27

MelloYellow

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From: Centrifugal City

Oops, sorry for saying HP (edited).

My problems were with the Cometic MLS also.
I threw my HP in the trash and they never went on either engine.

Even the Cometic non-HP series have been a nightmare for us lately.
I've never heard of a problem with the GM MLS tho.

Jul 23, 2004 | 07:55 AM

#28

1point3liter

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From: Jacksonville, FL

Off topic of the lifting heads...

If you're hearing ticking up top (possibly detonation), have you tried running race gas to see if it clears up?

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Jul 23, 2004 | 08:08 AM

#29

stealth

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Quote:

Originally Posted by 1dirtyZ

so what are the symptoms of a lifted head?

We've got a master's degree in lifting heads off an LS1. The first and most obvious symptom would be blowing coolant into, and out of, the collant reservoir, and perhaps finding coolant splatter in the engine compartment.

Jul 23, 2004 | 02:26 PM

#30

MelloYellow

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From: Centrifugal City

Pressurized Coolant, ie: Coolant Loss, Blowing into Coolant Reservoir, Boiling Radiator Cap, Coolant out exhaust, Popping Freeze Plugs out of your heads (fun).

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