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BSA Sloper Head Gasket #719924
12/24/17 4:29 pm
12/24/17 4:29 pm
Joined: Sep 2016
Posts: 3
UK
D
DaveS Offline OP
BritBike Forum member
DaveS  Offline OP
BritBike Forum member
D

Joined: Sep 2016
Posts: 3
UK
I have a 350cc ohv Twin Port Sloper. The answer will likely apply to all ohv Slopers.
Does anyone know for sure whether there should be a head gasket, and if so where exactly it fits (that's not as daft a question as you at first think!).
I presently have 3 different sets of advice from owners, and all 3 are in use...:
1: there should be no gasket, just lap the cylinder liner spigot/head joint to ensure a gas tight fit.
2: there should be a copper gasket, it fits inside the head recess so that the top of the cylinder liner spigot presses into it.
3: there should be a copper (or card) gasket, it fits on top of the barrel around the cylinder liner spigot so that it is squeezed by the flat surface of the head.
Cheers.
Dave

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Re: BSA Sloper Head Gasket [Re: DaveS] #721257
01/06/18 8:51 am
01/06/18 8:51 am
Joined: May 2004
Posts: 3,862
Sydney Australia
B
BSA_WM20 Online content
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BSA_WM20  Online Content
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B

Joined: May 2004
Posts: 3,862
Sydney Australia
Box number 2 has the money behind it.
Part number 15-1066 Cylinder head washer.
Looks like a copper washer on steroids which will go on top of the liner.

The single port has a different number (15-1065 )
Don't ask me what the difference is.
Make a pattern of the recess in the head then sent it off to Lanni ( coppergasketsus ) after you work out how thick it needs to be.
Remember to allow the push rod tube to seal as well


Bike Beesa
Trevor
Re: BSA Sloper Head Gasket [Re: DaveS] #749874
09/20/18 3:17 pm
09/20/18 3:17 pm
Joined: Sep 2018
Posts: 2
Montreal, Canada
A
Art_Wozniak Offline
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Art_Wozniak  Offline
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Joined: Sep 2018
Posts: 2
Montreal, Canada
Yes my 1931 OHV 500 had a head gasket. I had it made and went though an annealing process softening the copper gasket.


Moderated by  Allan Gill, Jon W. Whitley 


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