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Is this normal

Posted: Sat Nov 22, 2008 5:13 pm
by pablo
Took the heads off the car today to be greated by these. Is this normal for pistons to look like this :)

Image
Image

Posted: Sat Nov 22, 2008 6:07 pm
by Stuart
Only if your car is fooked :) I have saucepans that look like that (but quite a bit larger)

Posted: Sat Nov 22, 2008 6:12 pm
by gary@apt
looks like its been burning a bit of oil but them swirls are normal,is the way the air and fuel mix enters the cylinder

Posted: Sat Nov 22, 2008 6:13 pm
by Stuart
I had hoped that someone with a constructive comment would chip in :D

Posted: Sat Nov 22, 2008 7:09 pm
by pablo
Cheers gents :) I had hoped the oracle of knowledge (Gary) would be around :grin: Cheers Gary.

We plan to clean them up and fit new piston rings is there anything that we should look for or are we better off fitting new pistons.

Posted: Sat Nov 22, 2008 7:14 pm
by Daniel
i was going to say, the cylinders in the mini were like that and they were okay :)

Posted: Sat Nov 22, 2008 7:15 pm
by gary@apt
fitting oversize pistons will always be best ,but may be get a engine company to measure bores to make sure they dont gone oval

if they ok then a hone of bores and replacement rings

Posted: Sat Nov 22, 2008 7:32 pm
by pablo
Once we get them out i'll check the bores for roundness. That's something i can do :grin:
If all is ok we'll go from there, we have 3 options to look at but at the moment it may come down to cost. Due to work situation.

Posted: Sat Nov 22, 2008 7:43 pm
by gary@apt
call me if you need any help guys :D

Posted: Sat Nov 22, 2008 7:54 pm
by pablo
Thanks Gary..that's extremely generous of you :)