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Re: [Mgs] Heater valve

To: "Tom Gunderson" <>, <>
Subject: Re: [Mgs] Heater valve
From: Barney Gaylord <>
Date: Sat, 31 Oct 2009 22:52:06 -0500
Absolutely yes.  The Service Parts List shows the cylinder head with 
a blanking plate using lockwashers and hex hed scerws, 1/4-28-UNF x 
1/2" long.  The flange on the heater valve is thicker than the 
blanking plate, so 1/2" long screws are not long enough to secure the 
valve.  Unfortunately the SPL does not call out the screws used when 
the heater is installed.

The tapped holes are not very deep in the head, so it is a bit tricky 
to get screws the right length for this job.  I used to measure 
carefully, then cut screws to the exact length needed.  With more 
experience I found it is easier to use threaded studs with lock 
washers and hex nuts.  You can make your own threaded studs starting 
with a long 1/4-28-UNF screw.  If necessary, cut the threads farther 
along the shank before you cut the head off.  Then cut it off to make 
a 1/4-28-UNF x 1" long stud (2 pieces).  When in doubt, make it 1/8 
inch longer.  Works a treat.

Barney Gaylord
1958 MGA with an attitude

At 06:29 PM 10/31/2009 -0400, Tom Gunderson wrote:
>I am putting my cylinder head and all the parts back together for my 1500 mga.
>Does anybody have a better way to put the heater valve back on the 
>head after the head is mounted. I have a updated oil filter and the 
>pipe on top of the filter mount is very close. Can I change the hex 
>head bolts for threaded rods and use nuts to mount the valve? ....


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