McCormick W4 won't run

[DanB53]

That's right. The engine was overhauled about 3 years before it was parked in the mid 70s.

 

[Soundguy]

have you tried acetone ad MEK?

one of the on-the-shelf fuel addatives in a can have it in there.. b12 maybee?

 

[MIKE R]

Ya it is black beauty sand. Do you think that might work? If not what do you think will? I'd rather avoid using a tumbler to avoid chipping the valves.

If you turn the pressure down on the compressor and stay back you should be able to blast them. I've never done it. Maybe DJ54 can give some more info on doing this. I'm all ears.

 

[DanB53]

Ya I would love to hear more about it. I've never heard of sandblasting valves before.

 

[Soundguy]

i might try rubbing compound and a sponge disc....

 

[MIKE R]

i might try rubbing compound and a sponge disc....

Or a Scotch bright pad.

 

[Soundguy]

yup.. that too!

 

[DanB53]

That's something I never thought of. That might work.

 

[MIKE R]

That's something I never thought of. That might work.

Keep thinking. Maybe a piece of denim might work on the easier stuff.

 

[DanB53]

Keep thinking. Maybe a piece of denim might work on the easier stuff.

All of the easy stuff is gone. I tryed a flathead screwdriver to scrape off the carbon on the faces but that didn't even work.

 

[DanB53]

I've got them clean now. 200 grit sandpaper for the hard stuff and then finished it with a Scotch Brite pad. I avoided the seats, I'll clean them when I lap the valves.

 

[DJ54]

I'm thinking something like walnut shell media, or glass bead type. Never blasted them, but have as mentioned literally scraped them with the edge of a worn out file, then finished polishing with a wire wheel on a bench grinder. Just thought the blaster sounded easier Maybe even the material you have for yours, just know when to say when, and stay away from the seating part of the valve. If you're going to do a bit of lapping back in, if you'd stray with the blaster, that should clean it up.What I took off of the ones I did was a white ashen buildup, and harder than the hubs of heck...

Maybe a straight or cupped, twisted wire brush on an angle grinder..?? And wear a dust mask..!!

 

[DanB53]

They are clean and lapped now. Everything shined up pretty nice. The one that was stuck took some extra effort but its good now aswell. I've got to take a run down to the antique tractor store in New Berry Michigan to pick up the gaskets, guages, decals, fuse holder, etc. Once I have the new head gasket and manifold gaskets, I'll put her back together and cross my fingers that it'll start :hyper:. I'll keep you guys updated.

 

[MIKE R]

Take lots of pictures. You should have it going this week if all goes well getting the gaskets.

 

[Soundguy]

oven cleaner...

 

[Soundguy]

nasty stuff.

last time I have valves stick.. took lots of acetone to clean the stems..

 

[DanB53]

Take lots of pictures. You should have it going this week if all goes well getting the gaskets.

Ya. This store I'm getting them from is supposed to be really good. If he has everything in stock I'll run down there later this week.