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Balance?

 
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egspot
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PostPosted: Thu Feb 09, 2006 8:09 pm    Post subject: Balance? Reply with quote

What do they mean by balance when rebuilding a motor? pistons, rods, crankshaf/flywheel?

Now Iam about to do my first rebuild. Slowly but steady, iam getting the parts. Got me a 78mm crankshat and plan to get 94mm pistons and cylinders. I undestand that they have to be balanced and would like to know how do I learn how to do it? I would like to do as much as I can. What parts of balancing can I do, and what are the processes of balancing pats of the engine. Where can I find this information?

Emilio
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66beetle
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PostPosted: Thu Feb 09, 2006 9:20 pm    Post subject: Reply with quote

What that means is to make all the pistons and all the rods weigh exactly the same. This is done by grinding metal off the heavier parts to bring them down to the weight of the lighter ones. Where exactly to remove the metal without sacrificing strength is a subject of some debate. Basically, you want to remove metal from the least load-bearing areas first. That being said, if you're buying new pistons and rods they're probably pretty well balanced now. A milligram or two here or there isn't going to effect the performance much.
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65type1
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PostPosted: Thu Feb 09, 2006 10:14 pm    Post subject: Reply with quote

A good balance job will cost you somewhere around $200. When I get my stuff balanced I show up with the crank, pressure plate, clutch, flywheel, gland nut,crank pulley, pulley bolt, rods, pistons, retainers. Basically anything that reciprocates.

My parts are out being balanced right now for my 2332 and should be done tomorrow...
then assembly begins...yee haw

good luck with your build

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Clay
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PostPosted: Thu Feb 09, 2006 10:49 pm    Post subject: Reply with quote

Who does your balancing for you?
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65type1
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PostPosted: Thu Feb 09, 2006 11:11 pm    Post subject: Reply with quote

Island D automotive in Nanaimo and I've used thompson automotive as well.
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Clay
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PostPosted: Fri Feb 10, 2006 12:20 am    Post subject: Reply with quote

I'm not familiar with either one. I take it Island D does a good job? I'll be needing to get my 2027 components balanced this year.
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DERICKD
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PostPosted: Fri Feb 10, 2006 1:25 am    Post subject: Reply with quote

Ive had good dealings with Thompson in nanaimo and wiil use them shortly for my new 2275 im building.Parts are arriving daily cant wait too scream in an old beetle again!Get your motor together Clay lets do seattle again someday!
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Clay
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PostPosted: Fri Feb 10, 2006 4:34 pm    Post subject: Reply with quote

Sounds good, Derrick!

First thing's first though...just finished the roof on my new garage last night, now to get the ground ready for the concrete slab Twisted Evil

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65type1
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PostPosted: Fri Feb 10, 2006 5:38 pm    Post subject: Reply with quote

I'd take Island D over thompson...as a side note, a really good reason to check and balance your parts: My H-beam rods came from airspeed with 12grams difference between the lightest and heaviest. OUCH!
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panel
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PostPosted: Fri Feb 10, 2006 5:41 pm    Post subject: Reply with quote

My Dad got his Super 7 stuff done at Thompsons. I'd also recommend them.
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