Diagnosing my 6 bolt built.

[Cesar]

my block

6 bolt n't block

polished crank

acl bearings?

manhley rods and pistons (i think 30 over)

balance shafts removed. stubby shaft used.

line bore and hone with arp stus

arp head studs.

mitsu head gasket.

Here's the issue

under high rpm and high load there is a wobbling (maybe a thudding sound would descrinbed better). usually on the highway, passing. ( i do that a lot)

other than that, the motor runs and sounds awesome.

now my machinist ruled out the out of balance of the rotating assembly because it is intermittent.

I have already replaced the harmonic dampner with one I had lying around, with no effect.

I suspect the tensioner is going, or the stubby shaft is dancing around. most likely the tensioner.


any thoughts??

 

[Cesar]

can someone please move to cylinder head and shortblock??

thanks!!