Just wondering if roller cams have a sort of break-in process as compared to flat tappet cams.
I understand the flat tappet cams have a process for a reason, but is there anything needed for roller cams other then a good assembly lube?
I haven't really been able to find much publication on the matter.
thanks
a roller cam neede to be broke in some but not as much as the flat or hydralic cam. the lifters have to socked for a few day. when you start it, let it idel for about 5 min and then hold it at 2k or so for about 10 min and be easy on it for about 500 miles. then you should be good!
thanks for the reply!
anyone else have an input on the matter?
bump.. someones gotta know this...
Make sure the timing is set correctly. Set the lash with the lifters dry. Put oil in the crank case and prime the oiling system. Start the engine.
The timing is self explanatory.
Setting the lash while the lifters are dry, is so the lifters don't act like a "solid" lifter, causing you to get improper preload.
The entire oiling system must be thoroughly primed. This can be done on the OHVs with the oil pump drive shaft from a 60deg V6(I believe that is where the steel hex shaped shaft, that I have, came from. Too many motors not sufficiant memory
). Before you install the OHVs oil pump drive shaft/adaptor, insert the V6 shaft into the hole, ensuring the shaft seats in the oil pump. Use a heavy duty drill to spin the pump till oil comes out some of the rocker arms. Turn the motor 90deg and repeat till youve turnd the motor a full 720 deg(two full revolutions).
The roller lifter doesn't require mating to the cam lobe such as a flat tappet lifter requires. As long as the neadle bearings in the lifter have sufficiant oil all will be well.
If you need any supporting informatuion see Crane Cams web site, or most any cam manufacturers web site.
Thanks Jack !
I was hoping to hear from you !
what about cranking the engine over with the starter until I have sufficient oil pressure?
just a thought, but I will still take your advice.
cheers
You still turning the engine while it's dry. You need to prime the system before turning it over. It's not just for the cam & lifters, but the bearings also. Even if you slopped alot of assembly lube on everything, you still need the oil to be there as quikly as possible.
