xj650 camshaft

I'm wanting to put an aftermarket cam in my bike for a bigger lope. I'm not concerned with having more power I just want the slow rythmatic sound.

 

Sounds like you want a V-twin. A cam swap in an XJ won't do it, even if it was available.
I suggest trading the XJ for a Virago, WTF, did I actually type that?

 

Yeah, you've got the wrong engine for that. Yours will always sound smooth and mean, like a well engineered machine, not some 1900s nostalgia piece.

Can you tell I'm slightly biased towards 4 cylinder engines?

 

from info overload
http://www.xjbikes.com/forums/threads/the-information-overload-hour.27544/

b) all XJ650 (except, perhaps, for the Turbo models), XJ700 non-X, and XJ750 model cams will interchange. Here's the lift variances between them:

Intake:

* 650 models (except Turbo): 8.50mm
* 700 non-X models: 8.80mm
* 1981-83 750 models: 8.80mm
* 1984 XJ750RL models: 8.80mm

Exhaust:

* 650 models (except Turbo): 7.80mm
* 700 non-X models: 8.30mm
* 1981-83 750 models: 7.80mm
* 1984 XJ750RL models: 8.30mm


Since the cam lift durations and overlap specifications are not available for all models, we can only (for now) guess what those differences are; however, it would be reasonable to speculate that the 700 non-X and XJ750RL cams are the "hottest" of the bunch, followed by the 1981-83 750 cams, and lowest on the totem pole would be the 650 non-Turbo cams.

Although camshaft design and swapping is a real black art, as not only are lift, durations, and overlap issues involved, there's also cam-timing considerations as well as the interaction between all those factors and cylinder size, air flow into and out of the cylinders, etc. to account for.

there is more to read

 

I assume that swapping cams would make swapping jets necessary as well, but I'm an ignoramus when it comes to carb tuning. EFI reflash? Easy peasy in comparison!

 

Disconnect the spark plug lead from #3. That's about the only way to get an inline four to have a lumpy idle.

 

+1.

Gary H.

 

Nope.......

 

Thanks everyone for the the help I think one day I will get a vtwin. I really like the bike I got was just wantin a different sound

 

Besides, the "lope" is only at idle