Cam Difference??

[trbig]

Does anyone know what the difference is in the cams from the 82 XJ to the 80 XS G model? When I go back into my head this time, I am going to go back to the cams that were in my original 82 XJ head. I have the '78 cams in there right now (2H7) and went to look at the original cams... they are 3H5... from the XS G model. Did the factory interchange these since they both have the larger valves in the head, or was someone in there tinkering before I got it?

Tod

P.S. And TC... can ya bump me back about 100 posts or so.... nowhere NEAR Guru for these things. Make it 200... I like to post that nice fluffy stuff! lol.

[81xsproject]

for some reason I remember someone saying that the 80's cams (xj and xs) were all the same. But, I could be wrong.

[John]

Tod

According to Yama Mama's parts site, the XJ cam is the same P/N as the 80 Special, so they do share the same cam.
Oh hey, the parts you sent the pics of...I don't know what they are, but I do know what they ain't.

[trbig]

Well Duh.

I have no idea what I looked at, but I would have sworn I saw the cam part # starting with 10m... Sorry guys. ANOTHER reason I wish TC would reduce my posts... lol

John... that detective you live with found what my parts were. Thanks.

Tod

[b1rks]

cam chains

sorry to go off topic. my 80 xs1100 special has a hundred thousand miles thinking of changing cam chain. Bike still runs well . wondering if it will make huge difference. worth the time n money.

[trbig]

If your adjuster is out all the way and can't take up any more slack in it.. then change the cam chain. If it's not... why bother?

If it ain't broke don't fix it!

Tod

[TopCatGr58]

Hey B1rks,

Do your cam chain adjustment procedure, then pull the adjuster OUT without unlocking it! Then, mark the shaft, and unlock it, and see if the plunger can move anymore inwards towards the engine before it hits the inner stop lip. IF it doesn't move any or much, then you're essentially at the end of the adjustment, meaning that your cam chain has stretched considerably, and you could probably benefit from a new one. Not so much to improve performance, which it probably will, but to provide insurance in that the chain won't stretch more, and be too slack allowing it to jump teeth, and then bend valves and other unwanted occurances!
T.C.