Big end and a MAIN gone, how common.....

[white lightening]

Got my engine stripped and have discovered that ive done a big end bearing and a MAIN bearing!!

How common is this for them both to go at the same and what would cause this to happen??

Any thoughts would be appreciated

Cheers

 

[paulrandy]

Mst likely whats happened is that you've done the big end so badly it's bent the crank which in turn has done the main.
It does seem to be quite a common problem mostly associated with low oil pressure/contaminated oil or a bad rebuild.

 

[white lightening]

So would a bad rebuild contribute to the oil pressure being low???

 

[jiw]

low oil pressure could be caused by a number of things, excessive big end/main bearing clearences, worn pump rotors, sticking oil pressure regulator or even by leaving the o-rings out on the pump, how about putting a full story down mate, it could even be a blocked oil pick up pipe, jeff.

 

[heaven is a gtir (bry)]

I noticed when i rebuilt mine all down chamber side number on i.e cams piston number 1 and big ends were showing signs of more wear than the rest :?

These cars must have i bit of an oil pressure problem that it mainly affects the timing chain end?

Bry