Plain bearing vs roller conversion

[berger]

worty nooooooo leave the PRV in, i'm going to start calling you Whittling Worty your timing side bush is SAE 660 copper lead bronze and other bits nickle silicon maybe, just right for the job. MWAS bought the material to make the bush because they don't make a bush to fit your well ground timing side journal.

[olev]

I believe guzzies get ridiculous mileage from their plain bearing engines.
Do you think the horizontal split cases make a difference?
cheers

[RDfella]

I believe guzzies get ridiculous mileage from their plain bearing engines.

As do all modern cars / vans / lorries

[Worty]

worty nooooooo leave the PRV in, i'm going to start calling you Whittling Worty your timing side bush is SAE 660 copper lead bronze and other bits nickle silicon maybe, just right for the job. MWAS bought the material to make the bush because they don't make a bush to fit your well ground timing side journal.

Heh, soz Bergs, just want to do the best for the motor after all the work that's gone into it.  How does that bush material compare to the original as a matter of interest?

RD - the Kwaka also has horizontally split cases - is that the 'case' for most moderns?

[berger]

worty the original bushes were steel backed with a pegged bearing material which i believe is not a lot different to yours i think they were made by vandervell  maybe white metal on copper like a big end shell. stop worrying it's not got a hard phozzy bronze bush to wear down your already worn journal. go to the pub untill the sun comes out

[BSA_54A10]

I have used LG2 for decades
Firstly it is softer than the steel journal and secondly if it gets too hot the lead melts & smears to protect the shaft ( for a while )