Hey guys, I don't know if I'm posting this in the right place, but here goes:
I've got a Nissan RB30DET that I use in the NZ Drift Series over here, and I keep damaging bearings.
The person who has been doing all the work on the bottom end is a well known and reputable engine builder.
He is using ACL race bearings, and I use Total Lubricants 10w50 fully synthetic oil. I have a large sump, oil cooler (temps never exceed 120-130degrees C), high-flow oil pump - all the necessary bits for a race/drift engine, but I keep damaging bearings.
At first, I just used a second hand block in good condition, which lasted about 10 track days, then the bearings went.
After the first rebuild, it lasted around 6 track days, then melted a piston (issue now resolved) but when stripped down, the bearings were damaged again - so new ones were again fitted.
I have now done only 3 track days, and have a valve problem - and once again, the bearings are showing signs of wear (after only around 150km of running).
Any thoughts/opinions/ideas???
Thanks, Dave.
I've got a Nissan RB30DET that I use in the NZ Drift Series over here, and I keep damaging bearings.
The person who has been doing all the work on the bottom end is a well known and reputable engine builder.
He is using ACL race bearings, and I use Total Lubricants 10w50 fully synthetic oil. I have a large sump, oil cooler (temps never exceed 120-130degrees C), high-flow oil pump - all the necessary bits for a race/drift engine, but I keep damaging bearings.
At first, I just used a second hand block in good condition, which lasted about 10 track days, then the bearings went.
After the first rebuild, it lasted around 6 track days, then melted a piston (issue now resolved) but when stripped down, the bearings were damaged again - so new ones were again fitted.
I have now done only 3 track days, and have a valve problem - and once again, the bearings are showing signs of wear (after only around 150km of running).
Any thoughts/opinions/ideas???
Thanks, Dave.