|Posted on Thursday, September 22, 2011 - 04:02 pm: ||
I have nearly got my engine out from the boat and will be getting ready to strip it for a full service/rebuild. It was seized as it was stood for near 20 years, i have got it turning again but not that easy.
What i need to know before i get stuck in is are there any does and donts i need to know and is there any gaskets i will find difficult to get hold of, i have removed the head cover so i could give the pistons a whack to lossen up and find there is a copper gasket inplace, can these copper ones be reused if not damaged?
I can get hold of gasket paper so that i can make new ones if thats ok.
Any advice appreciated
Post Number: 7
|Posted on Saturday, September 24, 2011 - 03:28 am: ||
Good luck with the rebuild. If you haven't already you should join the Yahoo Stuart Turner group. There is a P66 manual to download with info on overhaul. The place that had all the spare parts (western Marine) went into liquidation a few years ago after the owner died. The stoke got distributed. www.stuartturnermarine.co.uk aquired some of the stock. They have a nice chap who comes in on a voluntary basis to administer the stock. So service is necessarily patchy but they are very helpful.
All the best
|Posted on Sunday, September 25, 2011 - 02:36 pm: ||
I have started the strip down and found it was a good job to, the side chamber was coked up bad, also the inside the side plate had a load of gunk inside it, a clay like gunk, i think i should of removed the flywheel first and did it in a way i was told but i didnt want to distrub the conrods/crank shaft etc, i slipped the head off the pistons to get the head cleaned up properly.
The side plate removed
I managed to get a bit of the gunk out
Now i removed the head to get it cleand out fully , now i found the the first piston had its rings loose, as they should be ...i think, but the second piston rings has one ring half stuck in its groove and the second lower ring completely stuck in there.
What is the best way to loosen then up? a tap with a hammer and pointy object?
Thomas P Montagu
Post Number: 3
|Posted on Friday, December 30, 2011 - 05:55 am: ||
Ref the query by 'The n meeii' regarding seized
piston rings in his P66--I would NOT attack them with a hammer and sharp tool--piston rings can be surprisingly brittle (a lot of old engines used cast-iron rings)---if the pistons are still in the barrel, and you can turn the crank, turn the crank so that the ports are covered and then try 'the hot oil' trick I suggested in 'seized engine' (28/12/11)--if the pistons/rods are out, find a diesel-proof container and soak the pistons in diesel for a fair lengrth of time--I have known items require weeks, rather than days, of soaking. Eventually,try lightly tapping the ring round. You might also be able to insert a (old) feeler-strip between the top/bottom of the ring and the piston-ring land. The current Stuart-Turner web-site is run by MARLEX MARINE in Cambridge. All the best with the project.