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Re: Piston problem

Posted: Sun Oct 18, 2020 6:46 pm
by JohnG
Hi Tony,

Sounds like good advice. Thank you very much.

Regards,

John

Re: Piston problem

Posted: Mon Oct 19, 2020 7:56 pm
by GOY189
I suggest that you make sure that the crankshaft and the cylinder are well protected with oil when the conrod/ piston are removed. Surface rust is possible and would add to your problems
Mike

Re: Piston problem

Posted: Tue Oct 20, 2020 1:05 pm
by JohnG
Hi Mike,

Thanks for the tip. Will do.

Regards,

John

Re: Piston problem

Posted: Sun Nov 01, 2020 7:55 pm
by JohnG
Work is proceeding a bit slowly because of limited time and the fact that every nut etc. seems to put up quite a fight before allowing itself to be removed. I have removed number 2 piston con-rod cap and the crankshaft journal looks a fair bit smoother than number one, though not entirely unblemished. I'd welcome a second opinion about state of number 2 con-rod cap bearing — as far as I can tell the metalling remains intact but it looks a bit patchy, and lacking experience in these matters, I'm not sure if it's still ok. Thanks.

Regards,

John

Re: Piston problem

Posted: Mon Nov 02, 2020 2:19 pm
by luli
The dots you see in the white metal are particles which were sink inside it - indicating bad filters, poor oil pump or dirty oil jackets. And there is no alternative to measurements when it comes to bearing-journal state. Plastigauge is a good candidate. There is an old saying about the road to Jerusalem: The first which looks short but it is long. The second is that looks long but which is short: Remove the engine from the car, take it apart, clean and check everything and correct as necessary. Not only the work will be much easier comfortable and accurate but little chances that you will have to start it over very soon.

Re: Piston problem

Posted: Mon Nov 02, 2020 4:45 pm
by JohnG
Hi Luli,

Thank you for your insights and advice. And I take your point about the road to Jerusalem. It's a very good way of putting it.

Regards,

John