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cleaning pistons
Posted: Sat Jul 30, 2011 10:37 am
by bluff467
Reassembling the top end on my m20b25 what is the best way of cleaning the tops of the pistons while they're still in the block, 1 & 6 are up and the other 4 are down.
Cheers
Re: cleaning pistons
Posted: Sat Jul 30, 2011 10:43 am
by baptie0
you can turn the crankshaft to get the other pistons to the top, I would use some wire wool and some wd to clean them.
Re: cleaning pistons
Posted: Sat Jul 30, 2011 10:51 am
by bluff467
So as long as I get 1 and 6 back to the top before putting the cylinder head back on, I should be back at TDC?
Re: cleaning pistons
Posted: Sat Jul 30, 2011 11:02 am
by daimlerman
You should find an engraved mark on the crank,that lines up with a mark on the casing,as long as they are lined up,all is well.
Re: cleaning pistons
Posted: Sat Jul 30, 2011 12:25 pm
by bluff467
Cheers for the info lads.
Re: cleaning pistons
Posted: Sat Jul 30, 2011 12:29 pm
by gooner1
Will you not run the risk of dirt getting into the cylinder bores doing this
Re: cleaning pistons
Posted: Sat Jul 30, 2011 12:39 pm
by badassyas
Leave the top of the pistons. It helps with giving the engine a higher compression without interference.