XL back to original camshaft

[tractot4play]

Hi!

I tried to compare my old broken camshaft and my "new" XR camshaft, and I did find serious differences!! On sunday I read your message here and could not believe it...



Really? That's not my case...I don't what the difference between your bike and my bike is. I know you have a XL600R and mine is a XL600LM, which I tought were different only on the tank, and some other little things. BUT when it came to comparind both camshafts (XR and XL-LM) there were diferences. Take a look at the pictures:

This is my camshaft before it broke:




and this one is the XR camshaft I borrowed. The strange thing between the rightmost cam lobe and the camchain holder is THE DECOMPRESSOR (marked in red):



Well, the main problem is that the distance marked in red in both pictures is not the same. The cam lobes of both camshaft are NOT at the same poditions, so making it nos possible to use the XR camshaft instead of the original one, since the rocker arms and the cam lobes would not match.

Can you believe it? I don't know what the difference between the camshaft you used and the one I borrowed is, but it seems obvious that, or your bike and my bike are different, or the camshaft we used are not the same (XR).

Does anyone know if the XL600LM and the XL600R use different camshafts??

I guess my only option left is to use a real XL camshaft, since it looks the XR's doesn't fit, don't know why. I even doubt the XL600R camshaft will fit my bike...

If anyone has any idea...I'd love to hear anything, any suggestion to get my bike fixed and running again...thanks a lot!!

i think you need a xr cam from 1985-87 without the auto decompression.the xr has the same bore and stroke as the lm.the xl600r is totally diferent shorter stroke etc

[mad4it028]

i sold him the xl600 cam months ago hes been up n running months now

[tractot4play]

i sold him the xl600 cam months ago hes been up n running months now

hi mad4it,what was the cam off that you sent the guy in spain?also did you have a xr cam in a lm motor before.i am pretty green with all this stuff so any info would be great about what camshafts can interchange.nice one for sorting the spanish guy out.cheers ian.

[mad4it028]

it was a xl600lm cam

[Edouard Bracame]

Hi All,

Anyone knows where to find a camshaft for a XL 600 LM 85?

Many thanks,

[tractot4play]

Hi All,

Anyone knows where to find a camshaft for a XL 600 LM 85?

Many thanks,

if you want to buy new david silvers uk has the best prices.they are also in stock as a lot of people think they are impossible to get.avoid cms netherlands unless you have a large bank account.you could try german ebay for best used prices.

[Edouard Bracame]

Thanks a lot for the information....