Chip M Posted April 12, 2012 Report Posted April 12, 2012 I had a washed piston the last time I took the head off. I am doing the radiator pressure test and would like to know if I just pressurize the system to 15 pounds and see if it holds it or do I need to start it up and see if the pressure rises from o-ring leak between the cylinder bore and coolant system. I found no gouges in the mating surfaces and the o-rings were new so I think I should try a new set of o-rings and lap the mating surfaces good and flat. Has anyone ever fixed a washed piston problem or can tell me if I am even going at this the right way? Quote
BigRed350x Posted April 12, 2012 Report Posted April 12, 2012 If you know you had a coolant leak in the cylinder, start by checking your deck. If its true, then replace your o-rings and give it another go. Quote
Chip M Posted April 12, 2012 Author Report Posted April 12, 2012 (edited) If you know you had a coolant leak in the cylinder, start by checking your deck. If its true, then replace your o-rings and give it another go. I am not totally sure I have a coolant leak. I do not lose any coolant from radiator, I am going by the look of these pistons. I have not done a coolant pressure test before and have been looking for a link to the procedure and have not found it. I will sure check the deck and head for flatness and try the new o-rings. Thanks and real nice bottom end walk thru, I got some good use out of it on my first rebuild. PISTON PICS http://bansheehq.com...l=&fromsearch=1 Edited April 12, 2012 by Chip M Quote
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