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Replacing a camshaft sprocket?

jdub6092

jdub6092

Forum Mentor
Super Site Supporter
Cant find any information on this after lots of surfing.
I bought a spare head a while ago and the cams and journals are in great shape, but the sprockets are for the gs650g and 650gl, so of no use for a 650e.
The sprocket bolts are torqued to the max with at least semi permanent loctite.
Wondering how to get enough leverage on these two bolts to remove the sprockets.
Anyone been down this road?
 
Small blowtorch or electric heat gun and heat the bolts and where they screw into, will soften up the loctite.
 
Be careful with the torque when retightening, I had assumed that all the cam sprocket bolt torques would be the same across all the GS(X) models and their workshop manuals. I was wrong. Getting cast iron welded is expensive.
 
Last edited:
Just say'in if your sprockets have been slotted or if slotted sprockets have been installed, those bolts, in my opinion, will need to be tighter than on OEM sprockets.
 
I got the old sprockets off, but now I'm trying to figure out how to hold the cams in place in order to torque the bolts to max 19 ft-lbs. Any suggestions?
is the 303 thread lock essential or is there a sufficient substitute that I can find at an auto store?
 
jdub6092 said:
I got the old sprockets off, but now I'm trying to figure out how to hold the cams in place in order to torque the bolts to max 19 ft-lbs. Any suggestions?
is the 303 thread lock essential or is there a sufficient substitute that I can find at an auto store?
Click to expand...

Use a pair of mole grips on the cam shanks. Any decent auto store should be able to provide an equivalent for the specified thread locker.
 
Grimly said:
Use a pair of mole grips on the cam shanks. Any decent auto store should be able to provide an equivalent for the specified thread locker.
Click to expand...

Thanks Grims,

Was able to get it done with one vice grip clamped on the shank close to the sprocket. It held firm.
Had to use a long socket extension to clear the lobes which made it a bit unstable.
 
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