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Mopar .045 Head gasket

Posted By: Azzkikrcuda

Mopar .045 Head gasket - 03/05/24 02:54 PM

Anyone know of a Big block composition head gasket that is about .045 Thick? I can find MLS gaskets that thick, but my short block is already together and it wasn't decked for MLS gaskets. I thought ROL used to make some but can find any info on them anymore.
Posted By: rickseeman

Re: Mopar .045 Head gasket - 03/05/24 02:59 PM

Isn't the Fel Pro about .050"?
Posted By: Azzkikrcuda

Re: Mopar .045 Head gasket - 03/05/24 04:15 PM

I can find .051 head gaskets, but would like to keep my quench height around .040.
Posted By: Cab_Burge

Re: Mopar .045 Head gasket - 03/05/24 05:57 PM

Fel Pro makes a composition head gasket that is right at .042 thick with a 4.440 bore size, maybe Pt # 8917, maybe not confused
Posted By: B1duster

Re: Mopar .045 Head gasket - 03/05/24 06:22 PM

I’m curious, why do you need .045 ? Are pistons at 0 , + or - ?
Flat, dish, dome ? Stroker ? Compression ? Heads ?
Posted By: Azzkikrcuda

Re: Mopar .045 Head gasket - 03/05/24 07:16 PM

RB stroker with the normal D-Dish pistons. Piston Height ranges from zero to .005 above deck with the piston rocked to the highest reading as close to the centerline of the piston as I could get with these style pistons. Figured I would stay on the safe side with alittle more clearance then the Normal .039 gaskets.
Posted By: ZIPPY

Re: Mopar .045 Head gasket - 03/05/24 08:19 PM

Sadly ROL is SOL, or maybe more accurately DOA.

If I remember correctly they were bought out and killed off.
Posted By: JohnRR

Re: Mopar .045 Head gasket - 03/05/24 11:33 PM

Originally Posted by Azzkikrcuda
RB stroker with the normal D-Dish pistons. Piston Height ranges from zero to .005 above deck with the piston rocked to the highest reading as close to the centerline of the piston as I could get with these style pistons. Figured I would stay on the safe side with alittle more clearance then the Normal .039 gaskets.


I'd have no problem running the .039/.041 gasket, I doubt it will hit .
Posted By: Cab_Burge

Re: Mopar .045 Head gasket - 03/06/24 03:25 AM

I've seen witness marks on zero deck pistons with .035 head gaskets shock tsk twocents
Not so with .042 thick on the same motor, dang stock rod lengths not be exactly the same rant whiney
Posted By: fbs63

Re: Mopar .045 Head gasket - 03/06/24 11:52 AM

Use the MLS gaskets and copper coat them. The copper coat will make up for any imperfections in the deck.
Posted By: Stanton

Re: Mopar .045 Head gasket - 03/06/24 01:40 PM

Quote
Use the MLS gaskets and copper coat them. The copper coat will make up for any imperfections in the deck.


Gee, I wonder why the guys that make those gaskets won't tell you that ? They are very adamant that you NOT use their gaskets on the wrong surface !!!
Posted By: Brad_Haak

Re: Mopar .045 Head gasket - 03/06/24 04:29 PM

I know the old orange Detroit Gasket composition head gaskets I've used measured about .042" compressed, even though they're spec'd at .038".
Posted By: cl440

Re: Mopar .045 Head gasket - 03/07/24 07:23 PM

440 Source says these are .051 compressed

440 Source Head Gasket
Posted By: Azzkikrcuda

Re: Mopar .045 Head gasket - 03/07/24 07:28 PM

I saw those, I wonder who makes them.
Posted By: fbs63

Re: Mopar .045 Head gasket - 03/07/24 07:59 PM

Originally Posted by Stanton
Quote
Use the MLS gaskets and copper coat them. The copper coat will make up for any imperfections in the deck.


Gee, I wonder why the guys that make those gaskets won't tell you that ? They are very adamant that you NOT use their gaskets on the wrong surface !!!


Of course they do. I've used them on meticulously machined and prepped surface and they have leaked coolant before so I don't risk it.
Posted By: moparacer

Re: Mopar .045 Head gasket - 03/07/24 08:27 PM

Originally Posted by fbs63
Use the MLS gaskets and copper coat them. The copper coat will make up for any imperfections in the deck.


This.

I have copper coated Cometics for years. Never worried about finish on the heads and deck.

Even reused them and copper coated the thin pieces. No problems.
Posted By: moparacer

Re: Mopar .045 Head gasket - 03/07/24 08:30 PM

Originally Posted by fbs63
Use the MLS gaskets and copper coat them. The copper coat will make up for any imperfections in the deck.


This. I run a Cometic. C5462-045 .045 thick. 4.41 bore.

I have copper coated Cometics for years. Never worried about finish on the heads and deck.

Even reused them and copper coated the thin pieces. No problems.
Posted By: rickseeman

Re: Mopar .045 Head gasket - 03/08/24 02:59 AM

Originally Posted by Azzkikrcuda
Anyone know of a Big block composition head gasket that is about .045 Thick? I can find MLS gaskets that thick, but my short block is already together and it wasn't decked for MLS gaskets. I thought ROL used to make some but can find any info on them anymore.

You say it wasn't decked for MLS gaskets. Have you put a profilometer on the deck surface? What was the RA?
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