Cam Break in

[jeffnhiscars]

I seem to recall jlevie saying to run at 2500rpms for 15 minutes to break it in but can't find the post. How's my memory

[e30davie]

I personally would be referring to any instructions from the camshaft supplier for guidance.

[digger]

normally run it faster than idle say 2000rpm to ensure good oil flow and take a little load off the nose. most of these guidelines are developed based on push rod engines where the cam follower is splash lubed and needs more rpm to cause proper a splash, but the m20 has pressure fed oil sprayers so a bit less critical. prime the system and make sure the oil is spraying properly. special goop on the lobes for startup wont hurt

[jeffnhiscars]

Everything was well coated in break in lube and after changing the oil and filter I cranked it with the fuel pump disabled til the pressure was up.

It's an IE 272 which I didn't buy from IE but could contact them

So youd just run it for like 15 minutes at higher revs and then just drive it ?

[digger]

yeah sounds good enough, for more extreme stuff there are additives you can add but this is not very extreme and basically similar to stock

no need to contact IE, they will probably say run at like 15-20 mins at 2000-2500 rpm using high ZDDP oil or something along those lines....

[jeffnhiscars]

Found this on summits website

Start the engine and immediately raise rpm to 3,000.
Vary rpm between 1,500 and 3,000 for the next 20-30 minutes.
Use a slow, steady acceleration/deceleration pattern.
Shut down the engine and let it cool.
Drain the oil and change the oil filter.

I think there's a consensus.