swtvictory

Okay, while in the middle of a run, my pulley decides to fly off the car. I dont think I have done any damage but what do I know?
Needless to say the track officials found the pulley, bolt, and 2 belts and I am currently using it but I dont think it is balanced correctly. My question is, can I cause any engine damage with my pulley being "out of balance"? I dont want to take any chances with that harmonic balancer. Reason I am thinking it is out of balance is because every couple days I am having to tighten that bolt up (I used the high strength loctite).
Let me know if I can cause any damage to my vehicle and I will put the beast out of commission for a couple weeks until I find a new pulley.
How would I know if I have already damaged something?

XtraCajunSS

iTrader: (2)

I hope you used a new bolt when you replaced your pulley. That bolt like many others is torque to yield. Also, If you torque it to spec which works out to ~240-250 ft. lbs. It should never come off. Also, be careful when installing the pulley and don't pull it on with the bolt. Use a threaded rod setup to press it on. This will save both the bolt and the treads in your crank snout.

I hope this helps. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Shane

Onyx LS1

iTrader: (5)

The bolt is built to stretch, therefore you should not reuse it. Did you use a new bolt when you installed the pulley?
I wouldn't reuse a pulley that went flying down the track bouncing and scraping the whole way.

XtraCajunSS

iTrader: (2)

One other thing, be very carful with this because you can easily damage your bottom end with an improperly installed pulley.

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Onyx LS1:
<strong>The bolt is built to stretch, therefore you should not reuse it. Did you use a new bolt when you installed the pulley?
I wouldn't reuse a pulley that went flying down the track bouncing and scraping the whole way.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">AMEN!!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

swtvictory

What kind of bottom end damage can be done?

I used the same bolt but am getting a new one.

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by swtvictory:
<strong>What kind of bottom end damage can be done?

I used the same bolt but am getting a new one.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">In all probability, you would damage your main bearings. The whole idea behind a harmonic balancer is to dampen harmful vibrations in the reciprocating assembly i.e. your crankshaft.

geniusjester

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by XtraCajunSS:
<strong>Also, be careful when installing the pulley and don't pull it on with the bolt. Use a threaded rod setup to press it on. This will save both the bolt and the treads in your crank snout.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Can you explain this? is then when takin off a stock pulley? whenever i have done asp pulley installs it slips right over the crank snout very easily and i would use the old bolt (as instructed) and torque it to spec and then throw in a new one and torque again to spec.

XtraCajunSS

iTrader: (2)

[/qb][/QUOTE]Can you explain this? is then when takin off a stock pulley? whenever i have done asp pulley installs it slips right over the crank snout very easily and i would use the old bolt (as instructed) and torque it to spec and then throw in a new one and torque again to spec.[/QB][/QUOTE]

It's okay to do that in a pinch but I highly recommend using a piece of threaded rod and a nut/wahser combo to get the pulley most of the way on the crank. Once its almost seated, then use the old bolt to seat it. Then use a new bolt and torque to spec. This is the safest method and will not damage the crank threads. Last week there was a thread on here from a guy who actually stripped the threads out of his crank and had to tap new ones!!!
<img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

geniusjester

oh okay..makes sense now. Whats the thread size for the rod do you use? sorry..id use the search feature..but im lazy right now <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

swtvictory

I just got off the phone with ASP and spoke with a lady there.
They have AWESOME customer service.
They are shipping me out a new pulley FREE minus the shipping which I got next day so I can have it for the weekend.
I have to send them mine when the new one arrives and thats all.
I would recommend ASP to anyone despite some of the negative things I have heard lately about them.
Take care and thanks for everyones comments.

Scalpel

iTrader: (4)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by swtvictory:
<strong>I just got off the phone with ASP and spoke with a lady there.
They have AWESOME customer service.
They are shipping me out a new pulley FREE minus the shipping which I got next day so I can have it for the weekend.
I have to send them mine when the new one arrives and thats all.
I would recommend ASP to anyone despite some of the negative things I have heard lately about them.
Take care and thanks for everyones comments.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't know why they'd send you a new one when you installed it improperly (used the old bolt). However, consider yourself lucky that you got a new pulley, I just hope you didn't damage the bearings.

BTW, I would love a picture of this threaded rod to seat the pulley. Thanks.

swtvictory

How would I be able to tell if I damaged any bearings? Is there any way to check?

I know that I dont deserve a new pulley. I didnt call them to complain and get a free one. I simply asked them when they could get me one and told them what happened and how it happened.
I will have to send them my old one though which is no biggie.

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by geniusjester:
<strong>oh okay..makes sense now. Whats the thread size for the rod do you use? sorry..id use the search feature..but im lazy right now <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm not exactly sure, I took an old bolt to a local nut and bolt supply and matched it up. I think it's 12MM.

66ImpalaLT1

The rod is 16mm. I just bought a meter of class 8.8 from Fastenal. They have a store near me.

Eric

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 66ImpalaLT1:
<strong>The rod is 16mm. I just bought a meter of class 8.8 from Fastenal. They have a store near me.

Eric</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the correction. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />