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Non GS help needed, Honda CH125 motor

  • Thread starter Thread starter Matchless
  • Start date Start date
lap the cylinder on a piece of glass covered with 1K paper being held flat by a mate. keep an eye out for the sanding marks on the aluminum to ensure a level surface. spray the gasket with gasket sealant, slap it back together and call it a day.

Andre, for as long as I've known you, you've always been DIY. I can't see you doing it any other way. :)

(it's time for me to start spraying SSU... ;) )
 
Last edited:
rustybronco said:
lap the cylinder on a piece of glass covered with 1K paper being held flat by a mate. keep an eye out for the sanding marks on the aluminum to ensure a level surface. spray the gasket with gasket sealant, slap it back together and call it a day.

Andre, for as long as I've known you, you've always been DIY. I can't see you doing it any other way. :)

(it's time for me to start spraying SSU... ;) )
Click to expand...



Nic, a knowledgeable friend dropped in this morning for coffee and he had a look at the head and cylinder. He suggested the following;

  1. Lap head and cylinder at home on a sheet of 1000 grit sandpaper wet with paraffin (kerosene) on a piece of glass using a figure of 8 movement.
  2. Lap the slight protrusion level with the gasket surface.
  3. Anneal the new gasket (He has used these many times before)
  4. Fit the gasket dry, then it comes off if you need to take the head off in the future again. He said I can use a gasket sealer, but can do it without as well
  5. I can use a very light bit of high temp. silicon around the edges of the water jacket
I feel a bit more comfortable with all the feedback and advice from all now and good to go. Thanks
 
rustybronco said:
Other than #4, I totally agree with Nic.
Click to expand...

Yes, Nic, did say that he is old school and does everything one way only as he learned to do many years ago. I mentioned spraying it with copper gasket sealer and he said he recalls using it once long ago. He does not do motors, just machine work.
Thanks to you and someone else for the advice to keep to the dressing of the head gasket.;)
 
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