Will Balancer On LT1 Spin With A Blower?
Thread Starter
Instructor
Joined: Jul 2003
Posts: 114
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From: Colorado Springs CO
Will Balancer On LT1 Spin With A Blower?
LT1's don't have a keyed balancer (although the crank is cut for a key), is there a possibility that the balancer will spin on the crank when using a blower? Thanks.
Burning Brakes
Joined: Oct 2002
Posts: 1,152
Likes: 1
From: Wichita KS
Re: Will Balancer On LT1 Spin With A Blower? (BillWelter)
If you purchase an ATI Super Damper for a "Y" body/LT series engine the damper hub comes cut w/ an internal keyway to match the crank.
More Performance also sells a modified stock damper hub with the keyway broached into it.... http://www.moreperformanceinc.com/
More Performance also sells a modified stock damper hub with the keyway broached into it.... http://www.moreperformanceinc.com/
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: Will Balancer On LT1 Spin With A Blower? (BillWelter)
It can be a problem and it has happened to a few LS1 cars that has used the same press fit only dampeners. I don't think a modified stock hub is the way to go either. As having to machine the key way into the hub weakens the stock unit. The reason is, in order to machine the slot the machinist has to machine a groove in front of the slot in order for the chips to break off when the groove is made. This would substaintially weaken a stock cast hub. See my little sketch below.
http://members.aol.com/_ht_a/tjwong008/public/hub.doc
I had a billet hub made from 4340 billet steel, my machine shop made it so that it had more material in the area where the groove was to be machined. Plus with it being billet steel that alone made it considerably higher strength than cast iron.
http://members.aol.com/_ht_a/tjwong008/public/hub.doc
I had a billet hub made from 4340 billet steel, my machine shop made it so that it had more material in the area where the groove was to be machined. Plus with it being billet steel that alone made it considerably higher strength than cast iron.
Thread Starter
Instructor
Joined: Jul 2003
Posts: 114
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From: Colorado Springs CO
Re: Will Balancer On LT1 Spin With A Blower? (tjwong)
You guys are the best, thanks for the info. My machinist said he can cut a slot in my hub, but if that doesn't work out, I'll get one from More... Those guys have a lot of neat stuff! Anyone heard of a balancer rubber ring separating due to the supercharger running off the balancer? TJWong, where did you get the aluminum cog-drive balancer? Thanks again.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: Will Balancer On LT1 Spin With A Blower? (BillWelter)
Bill, not sure if you have me confused with Brucevette or not. My cogged belt design is made of 4130 steel and was of my own design. It was fabricated for me by my local machine shop. I am in the process of getting a quote for having a couple more built for a couple a forum member and a local guy here in Portland.
Thread Starter
Instructor
Joined: Jul 2003
Posts: 114
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From: Colorado Springs CO
Re: Will Balancer On LT1 Spin With A Blower? (tjwong)
Thanks for the info, when you get the quote, can you let me know? Also, can those guys take a standard balancer and cut cog teeth in it? Thanks.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: Will Balancer On LT1 Spin With A Blower? (BillWelter)
No the balancers I have are custom made, there is not enough room on a stock balancer for the cogged belt, let alone a 8 rib serpentine belt.
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Thread Starter
Instructor
Joined: Jul 2003
Posts: 114
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From: Colorado Springs CO
Re: Will Balancer On LT1 Spin With A Blower? (superlund)
I got a slotted balancer hub from More, and the slot was cut with a mill, not a broach, and the slot os rounded at the bottom. This looks pretty thin at the outer edge, this isn't going to break, is it? Thanks