Carb lubrication?

When rebuilding/cleaning a set of carbs, what parts, if any, should be lubricated and with what?

My main thought right now is regarding the throttle springs running horizontally down the carbs. But this could apply to other things as well.

Thanks for your thoughts.

 

I've never heard of anything, I don't beleive it's possible. I can only think of spray sillicone on the throttle piston but I'm sure that would wear off in a week!

 

Internally, nothing. You can 'lubricate' your diaphragms to keep them from cracking, with armorall. Use a Qtip and work it in with light pressure.

Outside, the throttle springs you can hit those with some basic shop oil. I have a small bottle of Marvel lubricating oil that I put on the springs. The throttle shaft seals and the fuel supply oring should be silicone greased. Don't put anything on the throttle slide for sure. Better to sand that slide and barrel than lubricate.

Oh, and inside you can glue your bowl gasket to one side and silicon grease the other for easy removal without tearing the gasket.

 

I have a couple questions further about lubricating the throttle seals, I have mobil 1 synthetic grease (pink stuff) but the datasheet says it's lithium soap base, am I correct in assuming that is not suitable for this application? Does silicone grease only come in a spray and is there any brand someone would recommend or would any kind do the trick? Obviously my focus is longevity of the new seals.

Thanks!

 

Silicone grease is actually a grease consistency it is usually a dull cloudy white paste used in plumbing NOT THE BROWN GREASE. Putting grease on the outside of the carbs will only attract dirt to stick to them and help grind them away.


Art

 

Marvel Mystery Oil.

Lube the whole works with the stuff.
Particularly:
Throttle Shaft Pivots
Linkage
Sync Screws
Pilot Mix Screw

Diaphragms:

Armoral
Brush it on with a small brush or Q-Tips

Stand the rack on end to get the Marvel Oil into the Seals
Drip some Marvel on the Shaft and let the Hinge work.

 

You can get silicon grease in a non-spray form. Napa carries it as Sil-(something - Sil-glyde?) I am sure that others have it as well.

 

You can get regular silicone grease in the plumbing section of pretty much any hardware store. It's a paste.

 

Sil-glyde is correct and great stuff, made for breaks buy the big tube and you will ahve it for years. THe best I have found yet for caliper slide pins, even parts in the rear drum where you have metal to metal contact. You will be hard pressed to get silicone grease to the throttle shaft seals unless you have the carbs apart.

 

ok, i went to napa and found some stuff called EZE SLIDE made by Kleen Flo. sounds the same as that Sil Glyde described here, silicone grease in a tube made for brakes.

thanks for the info guys!

 

I wouldn't use a Product "Made for Brakes" ... on Carbs.

The Volume of Air rushing through the Intake Horn will dry-out what doesn't get drawn-in to the Engine.

You need something Light that does not accumulate.