Big end bearings.

[Chriscooke]

Can the big end bearings be swapped with the engine in the car or does it need to come out?

I've got a beginning of a knock and this is the likely cause

[jon200]

I think it needs to come out or at least box off as the rear crank seal flange and box stop the upper oil pan being removed. Possibly even a dowel on the oil pump but cant remember.


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[big_mac]

If it's knocking the crank needs checked imo

[Slamz]

Honestly, it's a million times easier to just pull the lot. No ****ing about removing box/subframe etc. on the floor. And if the crank is damaged, it all needs to come out anyway!

I also don't want to be the barer of bad news, but I have just pulled mine for a very light knock, crank needs a polish at the very least.

[Chriscooke]

Cool, cheers for the advise guys. Can't hear the knock most of the time so can't confirm where it is. Will do some more probing and report back.

[jon200]

Hopefully its an ancillary.


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[Jonnay]

although i agree with the above (simply replacing shells won't be a long term fix, crank will ALWAYS require attention) you can physically get to them with the engine/box in. you do need to support the engine and drop the subframe though. I changed my upper sump in this manner last year.

[JuicyCarbonFX]

*following this, mine started knocking 4 weeks ago

[Mark]

Its a complete ball ache, pull the lump.

[morzy2k5]

Surely if he hasn't ran it since he heard the faint knock,he will be able to throw a set of matched shells in and it will be good.aslong as the crank has
Not picked up at all/doesn't have any abrasion marks

[Chriscooke]

It's been run but not much. It's parked up now. Going to do some proper investigation as it's had a sticky lifter before which most thought was rod knock. If it's bottom end it'll come apart and get forged, bay tidied and possibly painted and a few other bits and bobs done.