I
ianralph
Guest
After replacing the cam chain guides on my '79 GS1000S I found that there was an intermittent rattle at low revs coming from the cam chain (the cam chain is new). The rattle goes away above 2,000rpm. Today I pulled the cam cover off and found that guide # 2 (the one that goes in the head between the cams) had the arrow pointing in the opposite direction to the motion of the cam chain.
I've turned the guide around so that the arrow points in the direction of the motion of the chain. The rattle appears to have gone.
Looking at guide # 2 I can't see why it would make a difference as it presents a flat surface to the cam chain, but I can see a difference in the structure of the legs that support the guide.
Has anyone had this experience and can anyone explain why guide # 2 is uni-directional? One of life's little mysteries.....
I've turned the guide around so that the arrow points in the direction of the motion of the chain. The rattle appears to have gone.
Looking at guide # 2 I can't see why it would make a difference as it presents a flat surface to the cam chain, but I can see a difference in the structure of the legs that support the guide.
Has anyone had this experience and can anyone explain why guide # 2 is uni-directional? One of life's little mysteries.....