LT1 balancer Help
12-21-2009, 05:48 PM
#1
LT1 balancer Help I need a broached hub and balancer for my 383 build. The motor is internally balanced so I need a neutral balancer. What are my options? I found a TCI balancer and hub http://www.summitracing.com/parts/TC...7/?image=large
I also found this hub on jegs http://www.jegs.com/i/JEGS/555/51609/10002/-1#
and this balancer http://www.jegs.com/i/JEGS/555/51606/10002/-1#
anyone use these? I need one very soon so it would have to be shipped before thursday. let me know what other options there are for me. Thanks
I also found this hub on jegs http://www.jegs.com/i/JEGS/555/51609/10002/-1#
and this balancer http://www.jegs.com/i/JEGS/555/51606/10002/-1#
anyone use these? I need one very soon so it would have to be shipped before thursday. let me know what other options there are for me. Thanks
12-21-2009, 06:49 PM
#3
This thread is probably gonna be moved to the "parts wanted" section, where nobody will see it.
There's another recent thread on this at: https://ls1tech.com/forums/parts-wan...-balancer.html
There's another recent thread on this at: https://ls1tech.com/forums/parts-wan...-balancer.html
12-21-2009, 08:28 PM
#7
Actually there were some that were weighted. I have no idea what they were in or why they were like that but I came across an article at GM hightech that tells you to always check.
http://www.gmhightechperformance.com.../photo_39.html
Not that I need one.
My question is more or less were do I find one with a broached hub that I can get before christmas.
http://www.gmhightechperformance.com.../photo_39.html
Not that I need one.
My question is more or less were do I find one with a broached hub that I can get before christmas.
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12-21-2009, 08:47 PM
#8
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I thought the LT1s were balanced with the flywheel. I had to have my flywheel neutrally balanced when I did my 383 build since the new motor was internally balanced. I'm not sure shoving a balancer on the front of the motor would have done the trick.
12-21-2009, 10:20 PM
#11
Interesting about that weighted balancer. As crankshafts are spin balanced as a single piece in a jig to a computer program, they should all come out matching. They certainly also spin the balancers to check their balance and any that aren’t balanced due to casting or machining issues, they'd subtract weight to zero it. I do recall seeing some hubs with drilling in them to balance them so maybe they're balanced as a set. In picture # 41 in the article, this is seen. None of the photos, show any added weight on the balancer or the hub. Also, if the crankshaft relies on a weighted balancer to be balanced, they’d have a key way in the balancer hub bore and keys installed to positivity locate it on the crank. I think the article may be incorrect. It is common practice to install the balancer hub with the arrow pointing up at #1 TDC but being neutral balanced, it won’t make a difference if it’s off.
Then again, we're talking about GM, one never knows what might happen on a production line to "keep things moving".
It does appear that all aftermarket harmonic dampers are un-weighted neutral balanced.
In what way do you mean you need a "broached" balancer?
JEEZZ, I wrote "balance" 15 times. Make that 16 times now.
From The American Heritage® Dictionary:
(transitive verb: broached, broach·ing, broach·es.)
1: To bring up (a subject) for discussion or debate.
2: To announce: We broached our plans for the new year.
3: To pierce in order to draw off liquid: broach a keg of beer.
4: To draw off (a liquid) by piercing a hole in a cask or other container.
5: To shape or enlarge (a hole) with a tapered, serrated tool.
(noun)
1: A tapered, serrated tool used to shape or enlarge a hole.
2: The hole made by such a tool.
3: A spit for roasting meat.
4: A mason's narrow chisel.
5: A gimlet for tapping or broaching casks.
6: Variant of brooch
I pick number 3!
Then again, we're talking about GM, one never knows what might happen on a production line to "keep things moving".
It does appear that all aftermarket harmonic dampers are un-weighted neutral balanced.
In what way do you mean you need a "broached" balancer?
JEEZZ, I wrote "balance" 15 times. Make that 16 times now.
From The American Heritage® Dictionary:
(transitive verb: broached, broach·ing, broach·es.)
1: To bring up (a subject) for discussion or debate.
2: To announce: We broached our plans for the new year.
3: To pierce in order to draw off liquid: broach a keg of beer.
4: To draw off (a liquid) by piercing a hole in a cask or other container.
5: To shape or enlarge (a hole) with a tapered, serrated tool.
(noun)
1: A tapered, serrated tool used to shape or enlarge a hole.
2: The hole made by such a tool.
3: A spit for roasting meat.
4: A mason's narrow chisel.
5: A gimlet for tapping or broaching casks.
6: Variant of brooch
I pick number 3!
Last edited by Paul Bell; 12-21-2009 at 10:28 PM.
12-22-2009, 12:36 AM
#12
Interesting about that weighted balancer. As crankshafts are spin balanced as a single piece in a jig to a computer program, they should all come out matching. They certainly also spin the balancers to check their balance and any that aren’t balanced due to casting or machining issues, they'd subtract weight to zero it. I do recall seeing some hubs with drilling in them to balance them so maybe they're balanced as a set. In picture # 41 in the article, this is seen. None of the photos, show any added weight on the balancer or the hub. Also, if the crankshaft relies on a weighted balancer to be balanced, they’d have a key way in the balancer hub bore and keys installed to positivity locate it on the crank. I think the article may be incorrect. It is common practice to install the balancer hub with the arrow pointing up at #1 TDC but being neutral balanced, it won’t make a difference if it’s off.
Then again, we're talking about GM, one never knows what might happen on a production line to "keep things moving".
It does appear that all aftermarket harmonic dampers are un-weighted neutral balanced.
In what way do you mean you need a "broached" balancer?
JEEZZ, I wrote "balance" 15 times. Make that 16 times now.
From The American Heritage® Dictionary:
(transitive verb: broached, broach·ing, broach·es.)
1: To bring up (a subject) for discussion or debate.
2: To announce: We broached our plans for the new year.
3: To pierce in order to draw off liquid: broach a keg of beer.
4: To draw off (a liquid) by piercing a hole in a cask or other container.
5: To shape or enlarge (a hole) with a tapered, serrated tool.
(noun)
1: A tapered, serrated tool used to shape or enlarge a hole.
2: The hole made by such a tool.
3: A spit for roasting meat.
4: A mason's narrow chisel.
5: A gimlet for tapping or broaching casks.
6: Variant of brooch
I pick number 3!
Then again, we're talking about GM, one never knows what might happen on a production line to "keep things moving".
It does appear that all aftermarket harmonic dampers are un-weighted neutral balanced.
In what way do you mean you need a "broached" balancer?
JEEZZ, I wrote "balance" 15 times. Make that 16 times now.
From The American Heritage® Dictionary:
(transitive verb: broached, broach·ing, broach·es.)
1: To bring up (a subject) for discussion or debate.
2: To announce: We broached our plans for the new year.
3: To pierce in order to draw off liquid: broach a keg of beer.
4: To draw off (a liquid) by piercing a hole in a cask or other container.
5: To shape or enlarge (a hole) with a tapered, serrated tool.
(noun)
1: A tapered, serrated tool used to shape or enlarge a hole.
2: The hole made by such a tool.
3: A spit for roasting meat.
4: A mason's narrow chisel.
5: A gimlet for tapping or broaching casks.
6: Variant of brooch
I pick number 3!
12-22-2009, 01:32 AM
#13
AHH, gotcha. From what I've seen, all aftermarket LT1 balancers have the keyway cut in the crank bore.
Did you see this?: https://ls1tech.com/forums/12647905-post2.html
Did you see this?: https://ls1tech.com/forums/12647905-post2.html
