Topic: cam shaft for 31 cu

[bountyhunter]

 Guys going to buy cam hopefully in next couple months for my ohv 31 cu in .want to limit rpms to 6000 -6250 max so will need cam with 2000-6000 range with lots of torque!!! will build next one more wild but not this one!what do you guys recomend. and what things do I have to buy beside the cam springs, billet lifters.

[redline]

I put the Cheetah grind from precision cams in my brother in laws 31ci.  It pulls hard.

[LVine2001]

Call Don he has what you need, and if he doesn't he will make one to your specs. himself !!!

www.g-team.us
701 400 4084

[George Herrin]

precision cheetah cam, ec springs and retainers, Only use outer spring. Thats it and the new valves from briggs and you will rock.

[bountyhunter]

the new valves??

[George Herrin]

The ones that use split locks. Meaning if yours has the slip over retainers instead of the ones that use a 3 peice split lock retaining system you need the new valves.

[bountyhunter]

 So let me get this straight the valves i have in my motor use the one piece keepers the vavles and keepers both are junk. you cant use good keepers on the valves. because they will not fit because they are the other type!and they dont make good one piece keepers for my valves,and even if they did the valves themself are week!! whats the ###s of the new valves.

[George Herrin]

695760  and 695761

[johnboy]

George, I ordered valves for a 33 single hoping they would be new and improved. The exhaust part number is 792868 and looks to be the same as a 14.5. Do you know of any differance in the 33 valves and the 14.5-18.5 valves?  At least this one says made in Germany  which I hope means BETTER made. Do you know any differances??  Just wondering      thank you    johnboy

[George Herrin]

far as I know the same size!!! I don't enlarge my valves on my singles.And I have only had failures with the old valves that had the slip over retainers. Never had a failure with the one's I listed above.

[johnboy]

THANK YOU !  now if we could just hook a computer to your head and download all the info there we could write many books.    THANKS   johnboy

[nor66]

So let me get this straight the valves i have in my motor use the one piece keepers the vavles and keepers both are junk. you cant use good keepers on the valves. because they will not fit because they are the other type!and they dont make good one piece keepers for my valves,and even if they did the valves themself are week!! whats the ###s of the new valves.

I have run the good style keepers that briggs offer on the valves that had the slip on retainers with no problems but mind you this motor wasn't built either.

[bountyhunter]

 mines running stock cam with top rpm targeted at4600-4700 . but George says stock valves are junk??  dont want to drop valve. so will  start season with the old fathfull box stock flattie tell I get funds to redo ohv top end. unless I find a cheeper way to fix prob . its a little bit bummer sence I spent 2 days getting darn ohv running in the first place thought was ready to go racing then i find all this out!!! oh well just the way it goes!!

[johnboy]

the stock valves are not junk but need to be replaced every winter to avoid problems. I would install 2 new valves for the 2 piece keepers and springs and retainers from EC.  Add a gasket and you are probably out $75 or so is all. VERY cheap insurance- but then you could run it all summer and  HOPE its ok until next winter.    johnboy
 

[George Herrin]

The older style stock vlaves made for the slip over retainers are what I said were junk the stock valves now which are designed for the 3 piece keepers are great. Heck I even change my high dollar stainless valves after every season. The one time I didn't it cost me a great running Indian.Like I said previuosly I have broke more of the expensive race valves than I have oem valves.