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Author Topic:   how can you tell if a motor has been balanced?
dode
Dirt Freak

Total posts: 417
posted December 28, 2002 12:48 PM UIN: 13209501
If it is assembled, is there any way to tell? What to look for? What exactly is done to the crank to balance it? I figure that would be the easiest thing to see. Thanks.

John

outlawstock17
Dirt Forum Champ
Total posts: 620
posted December 28, 2002 05:21 PM
it's difficult to tell if an engine is balanced if YOU didn't have it balanced. if any parts have been changed since the balance job, it may be out of balance anyway, even if you see the tell-tale signs of a balance job.

look at the bottoms of the pistons for some drilling. some pistons are close enough out of the box to not need any drilling though. check the rod caps for some grinding marks. the crank may have extra holes drilled in the throws, one or some of the holes could be welded up or it may have slugs of mallory in some of the throws.


dode
Dirt Freak

Total posts: 417
posted December 28, 2002 06:48 PM UIN: 13209501
I bought the motor new from a machine shop that went out of business. I got it for next to nothing. It was assembled and never even had heads bolted on it. It does have some holes bored in the throws of the crankshaft. Doesn't appear to be much on the pistons. I will check on the rods. Are there normally holes bored in the throws of the crank? Thanks.

John

racer17j
Dirt Forum Champ
Total posts: 1565
posted December 28, 2002 07:30 PM UIN: 54865418
yes there are holes from the factory in them

hamer36
Dirt Full Roller

Total posts: 61
posted January 03, 2003 09:28 PM
Why did they go out of business? poor balancing? lol I'd take it apart and double check everything, cheaper in the long run than blowin' 'er up.

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