Whats The Best Way Of Running In A New Engine Or A Rebuilt Engine

[1q2w3e4r]

I agree with Nismoid its a shit build if it lasted that short of time before you popped the engine in an M3. They are very resilient engines

I'm guessing it's an E36 with a S50B30 or B32 variant. $8k is extremely cheap to rebuild one, you'd generally be looking at well in excess of $12k to do it properly with pistons, rings, bearings and rods. Change the water and oil pumps, gaskets and any work needed on the VANOS.

Which BMW workshop was it? Let me guess, Rydalemere or Parramatta?

As for running in a rebuilt engine, simply go with what the builder tells you. I'd harbour on the side of babying it a bit, not using full throttle, lots of gear changes and give it some load once you hit 1000k. Depends on if your thinking lies on the side that thrashing it out of the gate for the possibility of a few more ponies is worth the flipside of possibly shortening engine life. Track cars run in on the dyno don't see street use and have different clearences and tollerances and are generally a bit "louder".

Just do what you think is best.

Edited June 17, 2007 by 1q2w3e4r

[T04GTR]

yeah. nursing it abit for 100 kays.

THEN CHANGE THE OIL AND FILTER.

re filling with normal oil and drive it how you would NORMALY drive it for a further 1000km.

then game on. after changing the oil again

[Gts-t]

This is the info i have pretty sure it was from the man himself SK.

Castrol GTX (the basic no frills mineral oil) with new filter.

Run engine for about 1/2 hr or until well warm.

Change oil filter. Engines can have particles in them that acccumulate during the build/maching proces and they need to be removed from the engine ASAP, these are caught in the oil filter. If you leave them in, the oil filter can get blocked and so will be bypassed.

Check basic tune on the dyno or on the road with portable lambda sensor.

Drive to Bathurst and back, lots of varying conditions, up and down hills, freeway, long climbs etc

Refill with Castyrol Formula R Synthetic, new oil filter. I use 10W60 in all of my own engines.

Do leak down test, if OK then final tune on the dyno.

Go racing

[Godzilla32]

Would that be 1/2 hour of standstill engine running or driving? Im guessing driving..