Stuck '38 V12 valves

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Bluedevil
Posts: 121
Joined: Fri Oct 05, 2018 7:07 am

Stuck '38 V12 valves

Post by Bluedevil » Fri Nov 09, 2018 6:08 am

My newly acquired Touring Sedan is reluctantly reawakening from it's 46 year slumber.

I have soaked all the cylinders with all the commercial and home made penetrants and have removed the manifolds and valley cover (man non detergent oil is nasty) and re soaking the valve stems as about 4 are stuck.

Any tribal knowledge on does and don'ts on freeing them up?

Thanks in advance.

Bill

Bluedevil
Posts: 121
Joined: Fri Oct 05, 2018 7:07 am

Re: Stuck '38 V12 valves

Post by Bluedevil » Fri Nov 16, 2018 8:38 am

Out of the 4 stuck only one to go!!!

I removed the intake/exhaust manifold, heated the valve stem with an electric heat gun to avoid an open flame and poured MMO down the intake/exhaust ports.

Waited a couple of days and was able to use a pry bar in the stem to actuate the valves.

On to the pistons.

Dave Czirr
Moderator
Posts: 4967
Joined: Tue Jun 16, 2009 5:30 am
Location: New Jersey

Re: Stuck '38 V12 valves

Post by Dave Czirr » Fri Nov 16, 2018 5:51 pm

Glad you were successful. There are certainly things considered to be more effective than MMO, PB Blaster is one I highly recommend.

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