If you spin a rod bearing, does it always damage the crank? If yes, can it be repaired without using thicker rod bearings?
:P no its not the monster.
my experience in this come from 350's and 258's
the answer is yes and no
if you spin a rod bearing it will always damage something
but
from what I have seen
it typically always damages the cap worse than the crank if caught very very early
it doesn't necessarily mean you have to turn the crank
but its a very good idea if you don't want to have it happen again
if you turn the crank then you need larger bearings to make up for the gap?
Quote from: He Man on May 22, 2011, 08:49:12 PM
if you turn the crank then you need larger bearings to make up for the gap?
yep
thicker bearings
also
ive read that newer motors are coated in a similar fashion as forks
and
turning the crank isn't recomended
:( im pretty sure the crank is cooked. will get a plastiguage and check against the spec.
thanks man!
Quote from: He Man on May 22, 2011, 09:07:02 PM
:( im pretty sure the crank is cooked. will get a plastiguage and check against the spec.
thanks man!
check in with speeddog, stu, and the tech guru's
they will have a much more solid knowledge base
Quote from: He Man on May 22, 2011, 08:33:59 PM
If you spin a rod bearing, does it always damage the crank? If yes, can it be repaired without using thicker rod bearings?
:P no its not the monster.
He Man, it's been awhile but you used to be able to get crank journals welded up and machined back to factory dimensions and I think you still can. The shop has to be good. But, for the same or less money you could probably buy a good used crank or two. Or three?
Every time I try to take a shortcut I end up with an Epic Fail. But I know a guy who sanded down his damaged crank with emery cloth, put in undersize (thicker) bearings and ran it for a long time. Not a Ducati.
Bob
Bob