Harmonic Balancer Bolt?
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From: W.P.B
Harmonic Balancer Bolt? In the process of installing my H/C swap, Impacted the bolt off (come out perfect, also I have an A4) I installed my other new cam, Slid my new ASP pulley on the crank, used my old harmonic balancer bolt, with my air impact, pressed it on in a matter of 1 minute , unscrewed the old bolt out, ripped out my new bolt, put some red locktite on it, and them impacted the new bolt on. The pulley lined right up with the idler pulley, and its on nice and tight. My question is anyone else impact on the harmonic balancer. I know you need to torque it to a certain spec, but using an $450 snapon impact @ 140 PSI line pressure should torque it ok right?
Re: Harmonic Balancer Bolt? LS1HOWTO.COM describes it this way..Step one: To seat new balancer, install using old bolt to 240 lb ft. Step two: Tighten NEW bolt to 37 lb ft. Step three: Final pass which turns new bolt 140 degrees.
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From: Earth
Re: Harmonic Balancer Bolt?
LS1HOWTO.COM describes it this way..Step one: To seat new balancer, install using old bolt to 240 lb ft. Step two: Tighten NEW bolt to 37 lb ft. Step three: Final pass which turns new bolt 140 degrees.
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Re: Harmonic Balancer Bolt? You might want to get a new bolt and do the torque and stretch routine. I just did a ASP pulley install on my truck yesterday and measured the old and new bolt. The old bolt was stretched ~.052". If you stretch the bolt too much it will not keep its clamping power. If you don't tighten it enough it may decide to back out after a couple WOT blast. Go here to see some pics with measurements of the old and new bolt.
<a href="http://community.webshots.com/album/45556659GDVRIx" target="_blank"><font color="red">ASP Pulley Install Pics<!--color--></font></a>
John
<a href="http://community.webshots.com/album/45556659GDVRIx" target="_blank"><font color="red">ASP Pulley Install Pics<!--color--></font></a>
John
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From: Hartsdale, NY
Re: Harmonic Balancer Bolt? One other issue. I read some have had oil seal crank leaks and that they are caused by installing the pully after the timing cover bolts have been tightened.
Apparently, to make sure the cover alings properly, the pulley should be torked down and then the cover boltd should be snuged...
....not really sure about this ...only read it somewhere here...
Apparently, to make sure the cover alings properly, the pulley should be torked down and then the cover boltd should be snuged...
....not really sure about this ...only read it somewhere here...
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Re: Harmonic Balancer Bolt? John, Great demo on ASP pulley install(bolt torque)!
robertb, I also would like to know if there is a bolt tightening sequence between timing cover and balancer. Anyone know???
By the way, did your case of ROYAL arrive yet? I'm still waiting for mine. gMAG
robertb, I also would like to know if there is a bolt tightening sequence between timing cover and balancer. Anyone know???
By the way, did your case of ROYAL arrive yet? I'm still waiting for mine. gMAG
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Verdad Gallardo TECH Veteran
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From: Hartsdale, NY
Re: Harmonic Balancer Bolt? ....Yeh my case of Royal Purple synthetic arrived the other day....The note attached asked me not to say anyting bad about the claimed protective properties of the stuff on LS1Tech.com anymore....
Now, I need a new 4.125" crank, some forged pistons and connecting rods for my big-block project....
Now, I need a new 4.125" crank, some forged pistons and connecting rods for my big-block project....
Re: Harmonic Balancer Bolt? There is a Kent-Moore tool you are supposed to use to align the timing chain cover before the balancer is installed. I've used it before when a tech at a dealer let me borrow it out of their LS1 tool kit. Works real good but I bet it's expensive to buy. It's hard to get to the bolts on the timing chain cover with the pulley installed. I'm going to make a tool out of a stock pulley that will slide on the crank snout and into the seal to align it. I'm going to cut out the center section of the pulley and hone the ID until it slides on and off the crank easily. It should work better than just eyeballing it.
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From: W.P.B
Re: Harmonic Balancer Bolt?
There is a Kent-Moore tool you are supposed to use to align the timing chain cover before the balancer is installed. I've used it before when a tech at a dealer let me borrow it out of their LS1 tool kit. Works real good but I bet it's expensive to buy. It's hard to get to the bolts on the timing chain cover with the pulley installed. I'm going to make a tool out of a stock pulley that will slide on the crank snout and into the seal to align it. I'm going to cut out the center section of the pulley and hone the ID until it slides on and off the crank easily. It should work better than just eyeballing it.
I guess im just lucky. My only concern was if it was going to leak because it looks like the ASP doesn't go up as far as the stock balancer did, but in time, i'll find out. thanks 
