drmini in aust wrote:
I would use 4000rpm, at 3000 many recent Mini engines are barely on cam properly- particularly if not using an SU.
eg. my 1360 with RE282 and a 45 Dellorto really only gets with it from 2900 up.
I run mine in on a stock cam then change it later, new rings and new cams need to be run in totally differently to each other so rather than run one or the other in, in a way that the manufacturer would say was incorrect I do the rings first then change cam shafts later....
I'm probably the only one but eh... whatever.
And yes,
some engines won't come on the cam till 4000rpm... if it was running a mild cam or a standared one, it would be well and truely on by 2500 (or on the cam at idle even). I wouldn't say 4000 as a blanket comment just because its how some engines behave...
That said, to each their own. 4000rpm is higher than most manufacturers advise during run in, thats just the reason I don't do it. But hey, to each their own.