Balancer removal question
#1
Burning Brakes
Thread Starter
Balancer removal question
Never done this on an LS motor, why can't one just loosen the engine mounts and jack up the engine enough to remove the balancer without removing the rack? When doing a cam swap how is this done or is the rack always removed? Thanks
#5
Burning Brakes
Thread Starter
Ok thanks ^ I see PowerBond has a stock replacement #PB1117n for $75.00 or a race one #PB117ss at $225.00 I also see a Dayco stock replacement for around $90.00 What are most using?
#7
Race Director
Member Since: Mar 2011
Location: SW Florida
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2021 C6 of the Year Finalist - Modified
Here is what I would use:
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
#8
Burning Brakes
Thread Starter
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too[/QUOTE]
Are you suggesting a new seal just because or are the PowerBond dia different? I do know on a GMC envoy the Dayco balancer requires a new Dayco seal do to the Dia difference, will leak bad if not changed.
Need a new crankshaft seal and crank bolt too[/QUOTE]
Are you suggesting a new seal just because or are the PowerBond dia different? I do know on a GMC envoy the Dayco balancer requires a new Dayco seal do to the Dia difference, will leak bad if not changed.
#9
Le Mans Master
Here is what I would use:
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
#10
Le Mans Master
I've done a few, you can remove the rack out towards the passenger side but not totally removing it. The other method is dropping the cradle a bit and remove the steering rack mounting points and tie rod ends and do it that way as well. I've done it both ways and both ways have equal work. I prefer the first method.
#11
Race Director
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Location: SW Florida
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2021 C6 of the Year Finalist - Modified
The diameters are the same ... I would just recommend a new seal to insure no leaks.
The seal is cheap, and it just pops out of the timing cover, so you don't need to remove the cover in order to replace the seal.
At least that's how it is on the LS1 ... I would think that the LS3 is the same.
The seal is cheap, and it just pops out of the timing cover, so you don't need to remove the cover in order to replace the seal.
At least that's how it is on the LS1 ... I would think that the LS3 is the same.
#12
Le Mans Master
Me too. I only pulled the rack on the very first HB I did, just moved it up/over after that.
Last edited by BlindSpot; 08-22-2017 at 02:06 PM.
#14
Drifting
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At minimum (again on a C5)
- remove belts
- remove (or push to side) the steering rack
- use a puller to remove the HB
- reverse install, you're done
what I did (makes life easier DIY) and a fix from the top
- remove hood (saves your back)
- remove radiator (more room)
- remove the alternator, water pump, power steering pump, bracket (15 mins, more room)
- remove steering rack (if the wheels are off easy to remove)
- replace crank seal (you are right there so might as well)
- put to all back together, with new HB
Suggestions if DYI
- you need a 250 to 300 ft-lb torque wrench HB install
- Use an ARP bolt
- if manual put it in 5th, if auto (mine wasn't but ) you need to keep the engine from turning)
- Don't reinstall a new OE balancer
Last edited by Dutch08; 08-22-2017 at 06:28 PM.
#15
Le Mans Master
c5 here (I think c6 is the same) the steering rack does not allow you to get a socket on the HB bolt (and later torque to spec). You can't lower the engine enough to help you here, and moving the steering rack is a lot less work.
At minimum (again on a C5)
what I did (makes life easier DIY) and a fix from the top
Suggestions if DYI
At minimum (again on a C5)
- remove belts
- remove (or push to side) the steering rack
- use a puller to remove the HB
- reverse install, you're done
what I did (makes life easier DIY) and a fix from the top
- remove hood (saves your back)
- remove radiator (more room)
- remove the alternator, water pump, power steering pump, bracket (15 mins, more room)
- remove steering rack (if the wheels are off easy to remove)
- replace crank seal (you are right there so might as well)
- put to all back together, with new HB
Suggestions if DYI
- you need a 250 to 300 ft-lb torque wrench HB install
- Use an ARP bolt
- if manual put it in 5th, if auto (mine wasn't but ) you need to keep the engine from turning)
- Don't reinstall a new OE balancer
On a C6, the rack needs to get around a lot of brake line plumbing on the driver's side if you pull it which I don't do anymore, never did a C5. But I had hard turn in a different direction than you on the ARP bolt. GM factory bolt is better with torque to yield. And, not likely to get the HB bolt loose or new bolt torqued on a M6 w/o a flywheel lock. I've tried, believe me.
Last edited by BlindSpot; 08-22-2017 at 06:44 PM.
#16
Safety Car
ARP crank bolt
the ARP crank bolt is better quality,easier to install and can be reused.most people don't have access to an angle meter or proper torque wrench at home to use the GM bolt
#17
Drifting
Member Since: Sep 2014
Location: Atlanta - - - - - Save the manuals
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Chock the back wheels on a M6(which I forgot to mention), put it in 5th or 6th it will not move. Believe me I've done it.
Last edited by Dutch08; 08-23-2017 at 12:10 PM.
#18
Drifting
Agreed, but if DIY in a single car garage w/o jacking up the car it makes life a bit easier when working from the top.
ARP is a superior fastener to the GM bolt, while "torque to yield" is a more accurate method than using a torque wrench. In a DIY situation you can't see the angle gauge, so I choose the ARP.
Chock the back wheels on a M6(which I forgot to mention), put it in 5th or 6th it will not move. Believe me I've done it.
ARP is a superior fastener to the GM bolt, while "torque to yield" is a more accurate method than using a torque wrench. In a DIY situation you can't see the angle gauge, so I choose the ARP.
Chock the back wheels on a M6(which I forgot to mention), put it in 5th or 6th it will not move. Believe me I've done it.
Quote:
As for new HB.
PB1503SS (not the PB1503N oem style replacement) and would go with a new one time use OEM bolt and the spec'd 272 loctite when it yield to torque installed, over the ARP bolts that have backed out over time instead.
https://www.corvetteforum.com/forums...500-labor.html
Last edited by BigVette427; 08-23-2017 at 02:31 PM.
#19
Drifting
Member Since: Sep 2014
Location: Atlanta - - - - - Save the manuals
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Is there an issue with ARP balancer bolts backing out?
Quote:
As for new HB.
PB1503SS (not the PB1503N oem style replacement) and would go with a new one time use OEM bolt and the spec'd 272 loctite when it yield to torque installed, over the ARP bolts that have backed out over time instead.
https://www.corvetteforum.com/forums...500-labor.html
Quote:
As for new HB.
PB1503SS (not the PB1503N oem style replacement) and would go with a new one time use OEM bolt and the spec'd 272 loctite when it yield to torque installed, over the ARP bolts that have backed out over time instead.
https://www.corvetteforum.com/forums...500-labor.html
Arp bolt - arp bolts are used in racing applications and they are the highest quality you can buy.
GM bolt - "probably" the cheapest bolts you can use.
The problem - when you torque a fastener down (the bolt) you stretch the bolt on its long axis, that is what provides the clamping force. If the part, in the opposite direction, exceeds the clamping force during use or has a moment (ie rotational force) along with a force against the force clamping force the bolt may loosen over time.
The general fix for this is:
- Proper manufacturer's torque value for proper clamping force (Torque to yield is more accurate and the max stretch, but in my DIY case not practical since I could not see the angle gauge )
- And a lock washer (locking mechanism to resist the moment arm)
- And/or a chemical locking product( to resist the moment arm)
I used red locktite and an Arp bolt. I was the easier choice for my DIY fix. I marked the alignment of the bolt and the HB so that I could check it. So far after a year, no problems, no movement.
I hope this help you and others, if you understand the situation differently or have a better fix please post it.
#20
Drifting
Here is what I would use:
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
____________________________
Dayco 'PowerBond' Race Performance Harmonic Balancer
P/N: PB1117SS
This is [not] an underdrive unit
$ 222.97 Shipped
https://www.summitracing.com/parts/p...model/corvette
Need a new crankshaft seal and crank bolt too
is there really a difference in the stock unit for $75 bucks
https://www.summitracing.com/parts/p...model/corvette
and the one for $222 ?
they both are gonna do the same thing?
one cant run faster than the other can it? or be more balanced than the other?