Big end bearing failure - Ultima GTR

[luckyp]

Hello all,

Just after a bit of detective work as to why a track day was ended in this fashion......any advice?

Cheers

Lucky

www.pistonheads.com/gassing/topic.asp?t=316623&f=20&h=0

[martind]

luckyp said:

Hello all,

Just after a bit of detective work as to why a track day was ended in this fashion......any advice?

Cheers

Lucky

www.pistonheads.com/gassing/topic.asp?t=316623&f=20&h=0

I don't think its fuel in the oil or lack of running in or not changing the oil.
Could be out of tolerance /not built properly in the first place
Detonation on only that cylinder would cause the damage to just that one.
What are all the other bearings like ?

[luckyp]

martind said:

luckyp said:

Hello all,

Just after a bit of detective work as to why a track day was ended in this fashion......any advice?

Cheers

Lucky

www.pistonheads.com/gassing/topic.asp?t=316623&f=20&h=0

I don't think its fuel in the oil or lack of running in or not changing the oil.
Could be out of tolerance /not built properly in the first place
Detonation on only that cylinder would cause the damage to just that one.
What are all the other bearings like ?

Hi, Yeah, I've just been asked the condition of the other shells back on the original 'Ultima' post. I'll have to take a look this week.

Cheers

Pete

[rev-erend]

Oil starvation.. caused by high cornering speeds..

[ridds]

To answer that for sure you need to pull the bearing next to it. Scoring damage or bearing pick-up then yes.

If no damage I would moint at miss-installation.