Author Topic: Brothers Goldie  (Read 133 times)

Online bsa-bill

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Brothers Goldie
« on: 18.01. 2020 11:10 »
OK he's got the head off and measuring for gasket thickness (never had a goldie so this is new to me).
Strange thing is when placing the head on without gasket it rocks front to back (side to side is fine) is this due to a possible mismatch of the flange on the cylinder and the recess in the head or something else, he says it does not rock with a gasket in place.
Not having any experience other than A10 and Ariel Arrow I ain't seen this before.
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline chaterlea25

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Re: Brothers Goldie
« Reply #1 on: 18.01. 2020 23:06 »
Hi Bill
There must be something either stuck in the flange recess or the head or liner is distorted ?
Put a small amount of fine grinding paste on top of the liner flange and rotate the head to and fro
This will show up any high or low spots
The heads can be distorted from previous improper fitting
I did up a 350GS a while ago where the gasket gap was uneven
I had to reface the flat gasket surface and then take a trueing up skim on the inner ring where the liner lip seals to
I did this by bolting the head to a lathe faceplate

John
1961 Super Rocket
1963 RGS (ongoing)

Online bsa-bill

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Re: Brothers Goldie
« Reply #2 on: 18.01. 2020 23:22 »
cheers John we'll try that
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco