Author Topic: Plain bearing vs roller conversion  (Read 4892 times)

Online berger

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Re: Plain bearing vs roller conversion
« Reply #45 on: 09.03. 2023 21:52 »
worty nooooooo leave the PRV in, i'm going to start calling you Whittling Worty *whistle* 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.

Online olev

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Re: Plain bearing vs roller conversion
« Reply #46 on: 10.03. 2023 05:00 »
I believe guzzies get ridiculous mileage from their plain bearing engines.
Do you think the horizontal split cases make a difference?
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Offline RDfella

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Re: Plain bearing vs roller conversion
« Reply #47 on: 10.03. 2023 08:50 »
Quote
I believe guzzies get ridiculous mileage from their plain bearing engines.

As do all modern cars / vans / lorries
'49 B31, '49 M21, '53 DOT, '58 Flash, '62 Flash special, '00 Firestorm, Weslake sprint bike.

Online Worty

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Re: Plain bearing vs roller conversion
« Reply #48 on: 10.03. 2023 09:01 »
worty nooooooo leave the PRV in, i'm going to start calling you Whittling Worty *whistle* 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?
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Online berger

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Re: Plain bearing vs roller conversion
« Reply #49 on: 10.03. 2023 09:39 »
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 *beer*

Offline BSA_54A10

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Re: Plain bearing vs roller conversion
« Reply #50 on: 17.03. 2023 03:25 »
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 )
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