Rebuild Dilema

[Waders]

Hey Guys,

I am about to get my freshly rebuild motor and winter is coming very fast.

I had set a plan for the breaking of the motor, I wanted to drive it about 4000km normaly, pushing it once in a while and then oil change. What else should I worry about?

The question is that I dont know if I should break in the motor before i put her to sleep for the winter or wait until next year to do that? What would be the best?

Thanks alot

[R31Nismoid]

You bed the rings on the dyno... and thats it.

You dont need to drive XXXX KM's dude.

[Kinks]

The bulk of the wear happens in the first 50km. It's vital that the first time the car is started it gets warmed up to operating temp and then loaded up on the dyno, so that combustion pressure can seat the rings properly. The key is load, not revs.. I would progressively load the engine up at 2500 - 4000 rpm.

After that's done you can start exploring high load high revs a bit - personally I wouldn't redline a new motor but that's just me.

Most of the wear will happen straight after you fire it up so 4000km is too long for your first oil change. Put mineral oil in it, drive it for 500km, then do and oil and filter change with more mineral oil and do the second service at 3-5000km. After that you can probably go to synthetics.

That's just my opinion though.. I don't build motors for a living

[Waders]

Unfortunatly I dont have access to a dyno. So im planning on putting the load on the street. Should be the same?

Thanks

[Duncan]

Exactly the same....just remember to change the oil and filter early in the piece to get rid of any crap you missed during the build.