Running-in /Maintaining B20VTEC motor

**GSi_PSi** · 26-06-2009 12:21 AM

Hey guys ive got my engine back from my engine builder and its completed. Before installation , which is coming very soon
I have few questions regarding running in of the engine and maintaining
For the intial running-in which oil should i use?
How long do i run it in for? keeping revs below 5k but giving it a bit of a load before then?
I herd there is a special oil for new rebuilt engines>?

Thanks

**JasonGilholme** · 26-06-2009 12:30 AM

ask your engine builder. If they're good they will be able to tell you all of this information easily.

**GSi_PSi** · 26-06-2009 12:04 PM

i want to knoe what other people have done, so i can find the best information.

**Limbo** · 26-06-2009 12:33 PM

apparently there are 2 schools of thought on this.

1) Take it easy for the first 1,000km
2) warm it up & thrash it

**GSi_PSi** · 26-06-2009 04:54 PM

^thats what im worried bout, i dunno which route to go with

**Mr_will** · 26-06-2009 04:54 PM

warm it up. then drive it like you stole it

**B18cEG** · 26-06-2009 05:00 PM

Maybe the warm up and thrash it is a good technique that way, is warms up to operating temperature (sould be done anyway) then when you thrash it the rings expand fairly fast and bedding in to the sleeves fast before the cross-haching is too warn.

**delsol9000rpms** · 26-06-2009 05:18 PM

you can buy a run in oil or just use a mineral base oil. dont go thrash your motor, warm it up and drive it under load.

**damienm** · 26-06-2009 05:30 PM

i ran my b18cr with running in oil for 1200kms and drove it under load meaning 5th gear low revs wide open throttle.

**JasonGilholme** · 26-06-2009 05:34 PM

The reason i say ask your builder is because then if anything happens you can just say i was doing what you told me to do.

It is a big question though, with two prominant answers. I do believe in the low RPM + WOT approach is the best.

**CRXer** · 26-06-2009 09:18 PM

Originally Posted by JasonGilholme

The reason i say ask your builder is because then if anything happens you can just say i was doing what you told me to do.

**GSi_PSi** · 27-06-2009 02:30 AM

Going to be installing motor on sunday hopefully finished by next week.
Okay so i buy mineral based run-in oil? where can i get this?
And So to thrash after warm up or go easy on it.?
The thing is but i wont be able to activate vtec untill CRXer helps me out with the extra vtec wires so should i take it to redline non-vtecing it?