Disassembling a Volvo Penta MD7B part 4.

[@hijaloca8321]

You are my new hero! I have a md6 which I am trying to fix (it over heats and struggles to start), and not knowing anything about engines I am using it to learn. So this is just incredibly helpful. Thank you.

[@janholst]

I have a MD6B too. MD6 and MD7 share all parts except cylinder and cylinder head

[@kubaszyszkowski1967]

I bought custom bearings and rings for my engine, not factory ones. The size of the bearings was provided by the crankshaft grinding plant, similarly with the piston rings. The remade elements are not worse than the originals, apparently - we'll see.

[@VAmx6]

Could you say the name of the supplier of the custom rings and bearings? Are these parts made to handle the compression ratio of a diesel engine? Thanks.

[@renhanxue]

What engine were those piston rings for? Would be interesting to know as a MD7A owner

[@interestsandreparations9896]

I think it was for a Subaru 1.1. I did indicate for which car it is in one of my videos.

[@renhanxue]

@@interestsandreparations9896 Thanks!

[@matui6983]

Are the clearances too big on the original bearings? If the rings you got suit a Subaru then surely the bearings are the same as another engine made sumwhere in the world. Those little engines get rebuilt here in NZ My engine machinist is away on Xmas holidays right now but Im pretty sure he would be able to find an equivzlent diesel bearing. Put the cylinder head in Evaporust to clean it Or look on KZbin how to make your own Electrolysis cleaning tank. Easy to do and worx brilliantly. Do not at any stage beadblast or shotblast the head.

[@interestsandreparations9896]

Thank you