Has anyone installed an aftermarket cam (Web Cam) on their P650 and if so, how hard was it? Any afterthoughts on what would make the install easier or what to watch out for? Can this be done by someone who has never torn a motor down but merely done jetting and carb rebuilds?

What gains in performance has anyone seen by installing aftermarket cams in their P650? I truly appreciate any help given, thank you.

 

A1-650 from another forum (low dropper) has installed the web cam. He says it made a huge difference. He said that he has a section of trail where he started from a mark and would hit 38-41 when he reached a second mark. He now hits 51 to 53 in that same palce. HUGE difference. He also has it bored to 700 cc.

He is looking at around 155 to 160 for his jet sizes, so that is one thing to consider. It is also proof that he is sucking a lot more air.

Alltoys suggests that port work alone will do more than a cam alone. Both should be done together. A1-650 did port work too.

Removing and replacing heads is actually easy. You just keep taking stuff off and then you have the cams and heads off. You need an owners manual for this, there is just too much detail to get from a forum.

You have to follow the destructions in the manual. You have to tighten the heads (and other stuff) on EXACTLY like the manual says. If it says use a new bolt, make sure you get a new bolt. If it says run a tap, get a tap. If it says locktite, go get locktite. If it says 42ft-lb, get a torque wrench. If it says measure this, make sure you measure it. If it says tighten the bolts in a pattern, do it. If is says clean this, make sure you clean it.

My friend tightens his wheel bolts on with an impact gun. His wheels haven't fallen off, and I bet they won't. You don't do that kind of work on an engine.

Engine work isn't rocket science, but it has to be done carefully, clean, and it has to be right.

I have taken cams and heads off motorcycles. It is not a big deal. It is usually easier to do that auto engines due to their smaller size and less cylinders. Sometimes they are worse due to the need for special tools.

Send your heads to penland or dunlap or someone good with heads and get the web cams too. No P700 will keep up with you, unless it has the same mods.

 

WVBartMan,
Nyroc has pretty much said it all a manual is a must for a project like this it has more info than you will ever need. Kawi has put together a very in depth book. You have purchased a good set of cams alone they are ok but will really come alive if you have the heads ported, the porting will accent what the cams are for. The head is seriously restricted it is a good thought to have them done at the same time.

 

NYROC said it best: Engine work isn't rocket science, but it has to be done carefully, clean, and it has to be right.

I think being clean makes a job so much easier and faster!

 

Gentlemen: I appreciate the information/responses. After speaking with Alltoys my plan is to have my heads ported and polished along with the installation of the cams. I have gathered enough data on the present performance (timing trials, distance-speed) to compare with the gains from some minor motor improvements. My goal is to play the role of sleeper when going up against the new P700. Here in WV, speed is everything, again, thanks for the help.