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Post by smearny on Jun 10, 2009 23:10:31 GMT -5
where can i get my crank balanced?!does it make sense?!
how much is it? do i need somebody specialised in xs 650?!
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Post by grizld1 on Jun 11, 2009 7:50:46 GMT -5
Google Crankworks (Arizona) and Falicon (Florida). The job is expensive--north of $350 at best, with materials. Results vary. For a street engine at stock displacement I'd recommend having the crank blueprinted (inspected, trued and brought to spec) with pins welded so it doesn't come out of true.
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Post by XS Rod on Jun 11, 2009 8:36:10 GMT -5
I had my crank rebuilt and welded. It had spread apart inside the case. Couldn't figure out where the noise was coming from. Took the crank out and everything looked OK at first glance. Went to set the crank back in the case and it wouldn't fit. That's when I noticed a scuff mark on the inside lower case. Was the rod loose ... rockin'.
Yo,
Rod
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Post by smearny on Jun 12, 2009 0:49:14 GMT -5
the problem is,i got a 72',a counterweight made of lead, fell out of the flywheel,got destroyed.i don't know if that was original,how heavy it was and so on.can't think of something else to do
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Post by grizld1 on Jun 12, 2009 7:23:37 GMT -5
It wasn't original. BTW the metal used by professionals in balancing isn't lead and it's much more expensive. Sounds like a PO tried to do a DIY balance job.
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Post by XS Rod on Jun 12, 2009 8:31:30 GMT -5
If someone mucked it up, I think I'd get a replacement on eBay or somewhere.
Good luck.
Yo,
Rod
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Post by smearny on Jun 12, 2009 14:27:30 GMT -5
..can i just get another crank,throw it in?!are they all the same?!
again,mine is 72'.would i have to get it rebalanced?!sounds the balancing is so expensive,rather get a whole motor used
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Post by grizld1 on Jun 12, 2009 22:59:38 GMT -5
No, they're not all the same. Rod length and wristpin diameter changed in 1974 (TS650A). Later cranks won't fit your machine. Look at the parts books at www.biker.net . Any crank assembly with the same part number as the one listed for your '72 will work. A crank does not have to be rebalanced to be moved from engine to engine. Having your crank blueprinted as I suggested is cheaper than a balance job. |
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aero
Junior Member
Posts: 43
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Post by aero on Jun 15, 2009 4:39:30 GMT -5
The only time you need to balance a crank is if you alter the weight by adding SIGNIFICANTLY lighter or heavier parts IE pistons or rods.
Balancing is done normally by removing material as adding is far more difficult and more likely to fail.
You can swap cranks between engines, BUT you must also swap pistons and cams to match the crank. Get the combination wrong and it won't fit back together.
If someone has drilled and lead filled the crank, it needs checking by and expert. Explain what has been done rather then leave him to find out.
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