Re: [Chrysler300] Replacing Heads & Gasket Sealer

["Richard Osborne" <richard@xxxxxxxxxxxx>]

Mark,

My dad always told me "When all else fails, read the directions". I went through various manuals '67, '71 and '78 which I have in my library, all mention using a sealer on the head gasket. I'm sure others will chime in on this. 

As far as the heads are concerned, all you need to worry about for todays gas is hardened valves seats. A machine shop can ad in hardened steel so that unleaded gas can be run. Not that big of a deal. Also, if you are interested in originality, and I am NOT trying to force this on anyone, I think the '63 big blocks still used a 4 nut valve cover? The later design went to a 5 nut design. This would be a visible difference.

Finally, if the block has ben decked and the heads have been true'd, there is a possibility you could raise the compression ratio noticeably. I was concerned about this on the G motor and therefore opted for composite head gaskets to compensate for the unitended rasie in CR.

Just my 2 cents. Have fun.

RIchard
 
>>> " Mark Lindahl" <mplindahl@xxxxxxxxxxxxx> 01/28/08 3:01 pm >>> 
Hi Richard,

I didn't think of using gasket sealer for the head gaskets until I read the 
service manual and that's what it said.
http://www.imperialclub.com/Yr/1963/FSM/Group09/Page11.htm

I have a set of both steel and one that looks like composite.  I just read 
the note with the composite set and it reads do not use sealer.  Maybe this 
sealer was only used for the older steel gaskets?  I am thinking of using 
the steel gaskets.

FYI, I am using the newer style, open- chamber heads that I was told are 
desirable for the gas these days.
The head surface was machined to guarantee flatness.

Thanks,
Mark


-----  Original Message -----  
From: "Richard Osborne" <richard@xxxxxxxxxxxx>
To: "ark Lindahl" <mplindahl@xxxxxxxxxxxxx>; <chrysler300@xxxxxxxxxxxxxxx>
Sent: Monday, January 28, 2008 1:27 PM
Subject: Re: [Chrysler300] Replacing Heads & Gasket Sealer


Mark,

Assuming that you are refering to the head gaskets, I never use any sealer 
on the head gaskets. This is true whether using steel shim or composite 
gaskets. I strongly recommend having the heads surfaced to ensure the mating 
surface to the block is flat.

Now, if you are talking about the intake gaskets, I prefer Hi- Tack, 
available at most auto parts stores. For the exhaust, I just use standard 
gaskets without sealer (even though from the factory, they did not use 
gaskets here).

Best regards,

Richard Osborne

>>> " Mark Lindahl" <mplindahl@xxxxxxxxxxxxx> 01/28/08 1:21 pm >>>
Hi All,

The 1963 service manual indicates that Mopar Number 1122893 gasket sealer 
should be used when replacing the cylinder heads.  What is the best 
currently available material to use?

Thanks,
Mark Lindahl
'63 300 Conv.

[Non-  text portions of this message have been removed]






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