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Engine basics => Engine set up tips => Topic started by: John Rist on November 06, 2015, 03:59:39 PM
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I just scored a Fox 35 on Ebay. I got it taken apart to add the by-pass burp plug. It came apart ok with a heat gun. It is well gummed up. What is the best thing to soak it in to clean it? RSM has back plate gaskets and a good needle valve assembly. Where can I find a new head gasket? Also it looks like it had two head gaskets. Is this normal?
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Yep, full strength antifreeze in a crock pot set on low temp overnight.
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New fuel will clean it too as long as it turns over good, and the rod isn't stuck to the wrist pin let some new fuel soak into it oil it up good and run it, all the gunk will come out the stack , if your fuel is part synthetic it will work even better. If I have the engine disassembled I use straight methanol and a tooth brush. If your head gaskets weren't damaged in disassembly you can re use them. T.J.
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Selective cleaning I would go with acetone and (for crevices) a toothbrush and (for flatter surfaces) a scourer pad, and overall cleaning Prestones antifreeze brought to a rolling boil in a can over an outdoor fire - 15 minutes and you are done but don't breathe the fumes.
An overall clean may well remove the fit from the piston and liner though.
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Will the crock pot method harm an R/C carb on an engine?
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Will the crock pot method harm an R/C carb on an engine?
No. In fact if it is stuck it will unstick it.
Good luck, Jerry
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Will the crock pot method harm an R/C carb on an engine?
It WILL harm it if there is rubber o rings or plastic parts!
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it may also discolor the alum depending on which era the Fox was made.
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Normal antifreeze will blacken an aluminum part. When choosing your antifreeze, look for the aluminum friendly type used in the newer cars. It will say eight on the front of the container. H^^
oh yeah....blacken does not mean harm it. It does not hurt the part, just darkens it.
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If you do happen to discolor the part, it can be soaked in lemon juice over night to take away the discoloration. Google search lemon juice and motorcycle carb for more details or pics
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I have used the green Prestone to de-gunk. The Prestone never discolored any aluminum part.
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It WILL harm it if there is rubber o rings or plastic parts!
I forgot to mention that I take the "O" rings off.........But not the plastic control arm. I guess you have a "hotter" crock pot than me because mine hasn't melted an arm yet! LL~ LL~
(I have a cheap-o good will one speed one)
Jerry
PS: I use the "Green" Prestone anti freeze as well.