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Author Topic: Which camshaft & crank do I have?  (Read 267 times)
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iansoady
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« on: 10.09. 2011 17:40 »

I have the head & barrel off my 1961 Golden Flash as I have a couple of fins to weld and my dodgy knee precludes riding at the moment sad2

I know this engine should have the later (big journal?) crank and sports (356?) cam but am not sure what I actually have. I know I do have thin flange barrels which isn't right.....

Just to satisfy my idle curiosity, how can I tell which crank & camshaft I have without further dismantling?
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Ian.
1962 Golden Flash (arrived)
1955 Velo Viper/Venom (departed)
2004 Triumph Tiger 955i (staying)
bsa- bill
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« Reply #1 on: 10.09. 2011 18:32 »

I'd be interested to know how you can identify them without a partial strip down.
Not too big a job to lift head and barrels and peer down onto the crank though.
For the cam, if someone could measure the lift on the cams, you could mark a pushrod and determine it's travel. I have a 356 cam spare I'll see what I can do tomorrow
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All the best - Bill
manosound
Outside Chicago, IL
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« Reply #2 on: 10.09. 2011 23:11 »

Cam profiles available somewhere here as a graph. 

As for the crank,  maybe best to satisfy your curiosity when the need comes to get in there.  To my recollection there is no view to the journals through the sump plate,  but maybe someone will know if one could ID the crank from any markings or details on the outside of the flywheel.

Richard L.
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KiwiGF
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« Reply #3 on: 11.09. 2011 03:17 »

I think the LJ crank flywheel has bolts on the circumference ie radially and SJ are bolted axially ie inside the flywheel difficult to describe in words

Heres an LJ

http://www.trademe.co.nz/Browse/Listing.aspx?id=406267353

No doubt someone will correct me if I've got that wrong

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Last had an A10 in 1976, in 2011 it was time for my second one.

1956 Golden Flash project Frame EA7-168x Engine CA10 9139, lucky me (they left together), dispatched from BSA to Liverpool, 5th Dec 1955.

Suzuki Intruder VS1400 for those days when the BSA ain't going.....
terryk
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Townsville Queensland Australia


« Reply #4 on: 11.09. 2011 10:12 »

yeh thats right KiwiGF
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1951 A10 plunger, 1958 A10 super rocket, 1948 A7 longstroke,
1951 A7 plunger, 1940s M21, WDM20, 1948 B33, 1949 b31
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