belt keeps popping off
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From: Upper Marlboro, MD
belt keeps popping off I went to the track today after my cam swap and the belt kept getting thrown off while shifting from 3rd to 4th, it would also eat off 1 of the ribs. It did this twice in a row. I couldnt afford another belt so I just threw 1 of the ripped up ones on and limped home.
Some people were saying the ASP pulley isnt on tight enough, that it might be slightly crooked, hence throwing at high RPMS. My buddy told me to get one of those tensioner pulleys with the higher lip, where can I get that?
Some people were saying the ASP pulley isnt on tight enough, that it might be slightly crooked, hence throwing at high RPMS. My buddy told me to get one of those tensioner pulleys with the higher lip, where can I get that?
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Originally Posted by RedHotZ28
I went to the track today after my cam swap and the belt kept getting thrown off while shifting from 3rd to 4th, it would also eat off 1 of the ribs. It did this twice in a row. I couldnt afford another belt so I just threw 1 of the ripped up ones on and limped home.
Some people were saying the ASP pulley isnt on tight enough, that it might be slightly crooked, hence throwing at high RPMS. My buddy told me to get one of those tensioner pulleys with the higher lip, where can I get that?
Some people were saying the ASP pulley isnt on tight enough, that it might be slightly crooked, hence throwing at high RPMS. My buddy told me to get one of those tensioner pulleys with the higher lip, where can I get that?
I got the tensioner pulley with the lip since it was cheaper than the katech tensioner and it did the trick. Thunder Racing usually has them in stock. 
BTW: Did you have the ASP pullies before you did the cam install? It is possibly that it didn't seat correcly if you never had a problem with it before the cam install.
BTW: Did you have the ASP pullies before you did the cam install? It is possibly that it didn't seat correcly if you never had a problem with it before the cam install.
Last edited by GM Muscle; Dec 5, 2004 at 04:16 PM.
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From: Upper Marlboro, MD
Originally Posted by GM Muscle
BTW: Did you have the ASP pullies before you did the cam install? It is possibly that it didn't seat correcly if you never had a problem with it before the cam install.
Yeah I would get a new bolt or a reusable ASP bolt and try to reseat it. If you put the pulley in the oven at like 200* it wil slide on much easier. Did you install a double roller timing chain? I've heard that the older style ASP pulleys need to be machined to work well with the double rollers.
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From: Upper Marlboro, MD
Originally Posted by GM Muscle
Yeah I would get a new bolt or a reusable ASP bolt and try to reseat it. If you put the pulley in the oven at like 200* it wil slide on much easier. Did you install a double roller timing chain? I've heard that the older style ASP pulleys need to be machined to work well with the double rollers.
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Originally Posted by RedHotZ28
nope, no double roller. Ive had a JWIS chain ever since my first cam swap back in May. Ill reseat it tomorrow and see if that fixes it.
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From: Upper Marlboro, MD
Originally Posted by bmfcamaro
i had the same issues, then i bought a gatorback belt from autozone and it never happened again. try that before buying the expensive tensioner
I'm just curious, when it jumps off, do you think it's coming off the balancer/crank pulley or at another point of contact? I ask because I'm trying to decide which pulley to use and the SLP has the high sides to stop it from jumping off.
Thoughts?
Thoughts?
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From: Upper Marlboro, MD
Originally Posted by jcarroll845
I'm just curious, when it jumps off, do you think it's coming off the balancer/crank pulley or at another point of contact? I ask because I'm trying to decide which pulley to use and the SLP has the high sides to stop it from jumping off.
Thoughts?
Thoughts?
Originally Posted by RedHotZ28
Its interesting you brought this up. I was looking at the small wheel that is above and to the left the alternater pulley (the one without ridges or lips), and I think I didnt tighten that one down enough. I had to take it off to reach one of the water pump bolts.
I'm still trying to decide which pulley to use but it seems that the ASP pulley is the pulley of choice both for weight and reliability. The SLP might be a little more reliable but in my mind if the belt wants to hop off, it will just come off in another spot if you have high retaining walls on the crank pulley.
Originally Posted by jcarroll845
Yeah, it seems to me it's very possible and more probable looking at all the pullies that it would come off that one then something with sides on it.
I'm still trying to decide which pulley to use but it seems that the ASP pulley is the pulley of choice both for weight and reliability. The SLP might be a little more reliable but in my mind if the belt wants to hop off, it will just come off in another spot if you have high retaining walls on the crank pulley.
I'm still trying to decide which pulley to use but it seems that the ASP pulley is the pulley of choice both for weight and reliability. The SLP might be a little more reliable but in my mind if the belt wants to hop off, it will just come off in another spot if you have high retaining walls on the crank pulley.
I got the answer... ASP has made some minor changes to the lip on the pulley to keep the belt from jumping off and my source tells me he hasn't had any issues or complaints from customers since the change. I think it's a go.
Originally Posted by jcarroll845
I got the answer... ASP has made some minor changes to the lip on the pulley to keep the belt from jumping off and my source tells me he hasn't had any issues or complaints from customers since the change. I think it's a go.
