52 M38 CDN Valve Seats Rusted

boucher · Posted: Wed May 17, 2006 1:30 pm Post subject: 52 M38 CDN Valve Seats Rusted

I removed the valves last night and noticed the valve seats on #3 and #4 cylinders are badly rusted. I gave the top of the block a light buff with the die grinder (3M blue ) and took a a few pictures of the situation. The pictures are posted on page 2 of the photo galery in the "Boucher" album.
Have a look and let me know what you think .

Thanks

Pete

Jeff_H · Posted: Wed May 17, 2006 7:56 pm Post subject:

Are you going to get your engine re-built? If so I beleive any competent machine shop can get that back in shape. Any idea what caused the rust? Those gallerys should be dry. Was the engine stored outside with the carb off, or plug out of that cylinder?

best of luck

Jeff

boucher · Posted: Thu May 18, 2006 12:39 pm Post subject:

I'm trying to avoid an engine shop, if possible. I think the intake valve #3 was open when it was parked and that's the reason for the rust.

I did another pass with the buffing pad last night and it's starting to look slightly better. I'll take another picture and post it soon

Bob_C · Posted: Thu May 18, 2006 5:00 pm Post subject:

Youre really gonna need a machine shop to do that. A buffing pad isnt going to do much.

That valve has to seal in its seat. With all of that corrosion, I really dont think thats possible. That seat also has to be machined at the correct angle so the valve will properly seat in it.

I know youre trying to avoid a machine shop, but I really think thats your only option right now.
_________________
Bob Collins
1954 M38A1 MD79056

Jeff_H · Posted: Thu May 18, 2006 6:33 pm Post subject:

I think that in the long run Bob is right, you need machine shop help. It is possible to hand grind in valves, but your seats appear pretty gone to get the right angle.

best of luck whatever you decide.

Jeff

wesk · Posted: Thu May 18, 2006 8:55 pm Post subject:

I wouldn't work over the top of that block with a tiny scotch brite pad on a high speed. You'll end up with small localize dips and valleys of .001 to .003 that will give you a lot of grief later when the head gasket starts leaking here and there. What you're dabbling in is pro machine shop work with the correct equipment.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php


Create an account	Home · · Forums · · Articles · · Downloads · · Photo Gallery


PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.