Tue Nov 30, 2004 7:55 am
I need to get lots of scale out of my Dads Farmall H carb and I have it completly tore done. do you recomend sand blasting to get the inside and outside cleaned out? Or do you think I would not get all the sand out of it?
what do you guys think?
Tue Nov 30, 2004 8:09 am
I bought a carb on Ebay for my B Farmall that had been sandblasted. Of course, the carb body is cast iron. It took a couple of good cleanings and some compressed air to get it clean. Hope there is no sand left in it...could be trouble.
For the cub carb, I would recommend a good soaking (2-3 weeks) in a gallon of CHEM-DIP. You should be able to find it at any good auto part store. Follow-up with a good rinsing with carb cleaner and dry/blow-out with compressed air.
Tue Nov 30, 2004 8:47 am
I blasted a carb in a glass bead cabinet. The carb cleaner would not cut all of the crap. Just made sure it was thoroughly clean when I was done. I've been running it now with no ill effects. I would say the cleaning in carb cleaner is the way to go first, then blast it if you have to.
Tue Nov 30, 2004 9:04 am
CJ, the metal of a carb body is very soft. Sand blasting will severely erode it. Don't do anything more serious than bead blasting. I would try the carb cleaner and/or Chem Dip followed by compressed air before attempting to blast.
Tue Nov 30, 2004 11:26 am
Be very careful if you choose to blast the carb. Small air/fuel passages can get clogged with whatever medium you're using.
I have used a 4:1 mixture of muriatic acid and water to soak the carb. It doesn't take long and with a brass wire brush it cleans up very nicely. Undiluted vinegar works also but takes much longer.
If you use this method be sure to rinse rinse rinse
Oh and rinse again
Tue Nov 30, 2004 1:41 pm
It sitting in carb cleaner right now! thanks guys
Tue Nov 30, 2004 2:33 pm
Lordy, ain't that shiney carb PUURTIE!
Tue Nov 30, 2004 8:21 pm
I have sandblasted 2 Ford N carbs and the carb for #2 cub with no problems. I completely dissasemble them, Soak them in carb cleaner to get what crud off I can. Blow them out. Then I seal up all holes with dowels. I have used round tooth picks and up to 3/8 dowel. Then I sandblast them.
Then blow them out good again and wash with hot water and soap.
What I would like to try is hot coat one. But I don't know if the pot metal they are made from can take heat of 350 to 400 degrees. Im afraid it might want to warp. If I had a scrapper I would try it.
Tue Nov 30, 2004 8:49 pm
Hey Donny, I like the acid deal. I'll bet that works slick. Will it cut through the dried grease gunk on the outside. I soaked an H carb for over a year last year and it still was coated with gunk heavily.
Tue Nov 30, 2004 9:31 pm
It does work great but don't leave it in too long
I'll take it out after a few minutes and give it a good brushing and dip it again until it's real clean. Then you know the drill...rinse, rinse, rinse
Wed Dec 01, 2004 1:28 pm
Just a thought....Anyone ever tried electralasys ?....Sure works good on paint and rust.
Wed Dec 01, 2004 1:58 pm
Our mechanic here at the shop soaks carbs in straight Castrol Super Clean and then rinses them with water. Follows that up with a can of carb cleaner and compressed air.
Wed Dec 01, 2004 7:36 pm
Are those stainless screws in the carb? And what size are they?
Thanks for the information.
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