Quote Originally Posted by BigJon View Post
After the 4wd trip yesterday my engine is making very bad noises.

On cold start there is a loud "grinding" noise, not a knock, which goes away when oil pressure builds (a couple of seconds).

If the engine revs are increased to about 2500, the noise returns.

An engine oil (20w 50) and filter change this morning lessened the noises, but certainly didn't cure them.

At this stage the plan is to pull the sump off tomorrow morning and have a peek at the big end bearings. I assume I can replace them (if need be) with the engine still in place.

Is it possible to replace the main bearings as well, or is there not enough room to slip them past the crank?

I don't want to chance the drive home as is, a breakdown could be very expensive with regards to towing charges.

i had bad engine noise in my 3.9 disco, the oil pick up came loose a full rebuild was required. i told the miss to keep going, if it was making that noise it was a full rebuild any way, so we just took it easy (800 km) out of town. when we got there we had it shipped home via toll. the rebuild has been good because we got to do it up the way we want it.