Engine rebuild

[Gaelicguy]

Good day all,
I’m starting to re assemble my 2.0 engine.
All the parts were vapour blasted and the machining and balancing was done by David Murray in the UK.
I’ve searched these items and found nothing so far.
1. I’ve read somewhere that it is a good idea to seal the inside of the magnesium sump with epoxy. If so has anybody got a recommended product ( there are lots of choices these days)
2. I would like to reflush the coolant galleries as the core plugs all show accumulated dried grunge. Any recommendations?
3. Replacement gallery plugs, aluminium or brass?

[Gaelicguy]

Another rebuild question,
I have read that the cam chain drives bearings ( the drive from the crankshaft) would benefit from self alighting bearings.
Is that all 4 or just 2 of the 4?
I already have 2 new self aligning bearings.
Thanks
Michael

[ThomasK]

Hi, when rebuilding an engine I use bearings with c3 specification for all 4 bearings, they are usually quite cheap.

[Gaelicguy]

thanks Thomas,
I had 2, bought 2 more €22 each in PT. They are all FAG.
M

[fdus172]

as to the oil pan question. I don't know about epoxy, but the problem with the magnesium parts is that it is rather porous, and can leak. I had both the pan and the cam covers sealed by a company in the US that services aircraft engines. They have a specialty sealant made for magnesium, and it's been solid for many years.

[Gaelicguy]

Thanks fdus,
I’m at sixes and sevens( silly Brit comment) on the sealing. My brother built and raced Matchless G7’s for years m. They have a lot of magnesium parts including the crankcases. He says he never had a porosity issue in over 20 yrs. I pointed out that these are now reaching 60 yrs old. I found the article that recommended the epoxy, it was in the library on this site. I’m going to try some two part clear epoxy on a cast iron pot I have. I’ll let it set for a few days and fill with engine oil and use my pizza oven to get it up to 350f. I’ll let you know if it looks like it’s failed.
Michael