Hi Guys
Would you believe the same thing has happened again this time on no 2 journal. Same tapping noise around 2000 rpm so engine pulled to take a look.
It was no3 journal that wiped out last time (see pics earlier in this thread) and the crank was welded and new rod purchased. The 3/7 journal is still OK but no 2 is completely wiped out. When the engine was at the machine shop last time all the rods were inspected for straightness and of course no 3 replaced. Crank was ground -10 and all new rod bearings fitted including new mains. Big ends checked for size.
How come this has happened again, any ideas, the engine has done less than 100 miles since the build.
New STD oil pump, lifter bores sleeved, oil restrictor kit fitted. Main bearings are all good so that tells me the oiling is OK so why would it wipe out one half of a rod journal and bearing yet the leave the other intact.
I am at a loss on this one and thinking I should replace with a new crank and rods. However that's easier said than done over here. Before I splash out the money could the same thing happen again, I need to identify whats causing this.
Not going back to the original machine shop, lost complete faith in them.
See pics below on No2 bearing with less than 100 miles. Rod journal exactly as the previous pictures, totally worn with about 40thou wiped off
Cheers
Horace
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