Balancer question...
Thread Starter
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
Balancer question...
When I installed my cam I put a ud pulley and pinned the crank. Now I'm planning for a supercharger and need to either put the stock pulley back on or go with an aftermarket stock size balancer. Any tips on getting the new balancer pinned in the same location as the old one so I don't have to drill the crank out in a different spot? Is it as simple as installing the balancer and lining up the crank pin kit to the old hole on the crank?
Also, any recommendations....keep stock balancer or upgrade to aftermarket? If aftermarket, which one?
Thanks
Also, any recommendations....keep stock balancer or upgrade to aftermarket? If aftermarket, which one?
Thanks
Thread Starter
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
thanks seevi. I've read some horror stories about the stock balancer separating, etc. so I was thinking and aftermarket one might be good insurance since I need to take the ud pulley off.
Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
Personally, if the stock diameter is what they are calling for and the kit doesn't come with a balancer, I would invest in a good afternmarket one like Fluidamper or ATI.
You don't need to redrill the pins.
You don't need to redrill the pins.
Thread Starter
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
when you say I "don't need to redrill the pins", what do you mean? I pinned the old balancer so when I put a new one on the crank will still be drilled but the balancer won't be. I'm assuming I can line up the pin kit to the half hole in the crank and redrill so that the pin can go in the same place on the crank. Or I could just drill a new pin, but I wasn't sure if that was a good idea or not.
anyone use this balaner from Summit http://www.summitracing.com/parts/SU...e%7c6.0L%2f364
anyone use this balaner from Summit http://www.summitracing.com/parts/SU...e%7c6.0L%2f364
Last edited by turboffr; Jul 6, 2010 at 09:13 PM.
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
It's going to be really difficult to drill the balancer over the existing hole (in the crank). I see your problem and really don't see how you can do that with the engine in the car. You really may have to install the balancer and mark where the hole needs to be, then remove the balancer and have it drilled on a milling machine or a lathe in order to make it right.
Thread Starter
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
It's going to be really difficult to drill the balancer over the existing hole (in the crank). I see your problem and really don't see how you can do that with the engine in the car. You really may have to install the balancer and mark where the hole needs to be, then remove the balancer and have it drilled on a milling machine or a lathe in order to make it right.
Any downsides to just pinning the crank on the opposite side of where I pinned the last one? I gotta believe someone out there has had to deal with this after installing and reinstalling the pinned balancer (cam swap)
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
I'm not so sure drilling the crank in another spot would be a good idea because you're now removing alot of material from the snout of the crank. If you can install the balancer onto the crank and make sure it's fully on then you can mark the location of the existing pin hole (in the crank). I would then remove the balancer and have the half circle drilled in the balancer with a lathe. This will ensure a nice tight hole once the balancer is lined up with the crank hole. It's alot of work but I really think you will mess up the balancer (and crank) if you tried to drill the balancer out while on the motor.
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Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
when you say I "don't need to redrill the pins", what do you mean? I pinned the old balancer so when I put a new one on the crank will still be drilled but the balancer won't be. I'm assuming I can line up the pin kit to the half hole in the crank and redrill so that the pin can go in the same place on the crank. Or I could just drill a new pin, but I wasn't sure if that was a good idea or not.
anyone use this balaner from Summit http://www.summitracing.com/parts/SU...e%7c6.0L%2f364
anyone use this balaner from Summit http://www.summitracing.com/parts/SU...e%7c6.0L%2f364
I'm guessing this is the way you pinned the balancer
http://www.aacorvette.com/performanc...products_id=67
This is the kit I had in mind
http://www.atiracing.com/products/da...ex_ls1_pin.htm
Pretty pictures
http://www.ls1tech.com/forums/forced...-write-up.html
Thread Starter
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
What I meant was the crank. Most aftermarket balancers already have a groove for the pin to line up. Once I start modding the engine, the stock balancer is the first thing to go.
I'm guessing this is the way you pinned the balancer
http://www.aacorvette.com/performanc...products_id=67
This is the kit I had in mind
http://www.atiracing.com/products/da...ex_ls1_pin.htm
Pretty pictures
http://www.ls1tech.com/forums/forced...-write-up.html
I'm guessing this is the way you pinned the balancer
http://www.aacorvette.com/performanc...products_id=67
This is the kit I had in mind
http://www.atiracing.com/products/da...ex_ls1_pin.htm
Pretty pictures
http://www.ls1tech.com/forums/forced...-write-up.html
So the keyway on an aftermarket balancer will fit the 1/2 circle of the pin? If so, than I could see how I wouldn't have to redrill anything. But am I SOL with the stock balancer now?
