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Old 07-12-2018, 12:06 PM
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Join Date: Mar 2016
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Default Pulley exploded?

Hi all,

I lost PS/AC and popped the hood and saw the belt had come off a couple days ago. I just went to put the belt back on and found the #4 guide pulley missing.

So I guess I need to buy a new one, does anyone have a part number/link anything that identifies this pulley as more then a "guide" pulley.

and secondly... has anyone ever heard of this happening before and what the heck could have caused this? A little freaked out honestly and hoping I don't continue to find damage caused by this.


Thank you!
Attached Images
File Type: jpg missing pulley.jpg (4.19 MB, 23 views)
File Type: jpg missing pulley3.jpg (3.73 MB, 23 views)
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Old 07-12-2018, 01:54 PM
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Default Re: Pulley exploded?

Quote:
Originally Posted by MoCross View Post
Hi all,

I lost PS/AC and popped the hood and saw the belt had come off a couple days ago. I just went to put the belt back on and found the #4 guide pulley missing.

So I guess I need to buy a new one, does anyone have a part number/link anything that identifies this pulley as more then a "guide" pulley.

and secondly... has anyone ever heard of this happening before and what the heck could have caused this? A little freaked out honestly and hoping I don't continue to find damage caused by this.


Thank you!
my initial thought is that you have had the ASP idler give it up (your Waterpump pulley also looks like it came in an ASP Crank Pulley kit ... furthering my suspicion).... then I see that it looks like you have an aftermarket SC pulley ..... are you running stacked ?

where is the pulley that came off?

if you were using a factory pulley (which I tend to doubt) this is the replacement https://www.pelicanparts.com/More_In...-202-01-19-M22

if you did have the reduced diameter ASP idler, and still have the pulley (should be in your belly pan) you should be able to replace the bearing.

hope that helps,
Chris
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Old 07-12-2018, 02:00 PM
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Default Re: Pulley exploded?

I looked again, and it does appear that you have an aftermarket Crank Pulley (and therefore had a NON-STOCK idler blow up). If you have can find the pulley in the pan, you should be able to replace the bearing.
If not, send me a note; I have replacement pulleys for that (I have both the ASP pulley that you had and a METCO better quality double-bearing replacement).

Cheers,
Chris
[email protected]
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Old 07-12-2018, 03:20 PM
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Default Re: Pulley exploded?

I took a better picture of the crank pulley... I didn't know it was a performance aftermarket.. and not sure what size 178 or 185? etc.


The SC pulley is in fact a new 65mm that was recently installed. The old one was bad and thinking everything else was stock would not be an issue to go with that one.


So if in fact I'm actually running, stacked... can you guide me on what I need to do now to avoid issues.


I did not find a pulley in the belly pan.. I attached a close up of where it bolted on..


Thanks again!
Attached Images
File Type: jpg All thats left of missing pulley.jpg (3.72 MB, 13 views)
File Type: jpg CrankPulley.jpg (3.35 MB, 12 views)
File Type: jpg other.jpg (3.61 MB, 16 views)
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Old 07-12-2018, 03:30 PM
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Default Re: Pulley exploded?

I found a picture I had taken when I put in the SC Pulley.. and it shows the now missing pulley...

It looks like the #4 Guide Pulley.. in the diagram is called the Large Idler Pulley m112k
by needswings… But they also say it's eliminated with the ASP Pulley saver kit. So I'm guessing I don't have the ASP PSK.


Thanks
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File Type: jpg The missing pulley before it was missing.jpg (3.04 MB, 19 views)
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Old 07-12-2018, 04:11 PM
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Default Re: Pulley exploded?

Quote:
Originally Posted by MoCross View Post
I found a picture I had taken when I put in the SC Pulley.. and it shows the now missing pulley...

It looks like the #4 Guide Pulley.. in the diagram is called the Large Idler Pulley m112k
by needswings… But they also say it's eliminated with the ASP Pulley saver kit. So I'm guessing I don't have the ASP PSK.


Thanks
your pulley is probably a 181mm (measure it to confirm). If it were a 185 and you were running stacked, you would likely have issues (extreme manifold pressure, insufficient fuel, etc) if you were at normal elevations.

As far as I know, only Rob (needwings) and I have supplied a BWK/PSK for the M112k (this engine) .... ASP has no PSK (or BWK/Belt wrap kit) for this engine (they do/did make the pulleys for the M113k BWK) It would seem that you have/had a Crank, Waterpump and idler made by ASP.

If you were to Get a BWK/PSK it would solve your problem. I am not selling that kit anymore SO ... Rob's kit Has been and still is a good product for this application. (make sure you tell rob about your Crank and SC pulley sizes so he can see if he has a configuration of belt and support pulleys that will work best for your application).

Or, if you like I can sell you a replacement for the ASP pulley that blew up and dissappeared. As I indicated before, I have an ASP pulley (same as you had) ... AND (as a better choice) I have a better quality (double bearing) Custom version of a Metco Motorsports pulley (that is made just for this application/location).

Chris
[email protected]

Last edited by latemodel21; 07-12-2018 at 04:14 PM.
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Old Yesterday, 07:20 PM
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Default Re: Pulley exploded?

I went ahead and ordered the PSK from needswings. I think getting the new pulleys and a new belt sounds like a good idea, I don't want to keep having issues. This car isn't my daily driver, but running stacked 181/65.. do you think it will be reliable? Like I could drive 500 miles without a tow truck following me? lol


You've been a Big help Chris and it is greatly appreciated.
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Old Yesterday, 09:13 PM
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Default Re: Pulley exploded?

Quote:
Originally Posted by MoCross View Post
I went ahead and ordered the PSK from needswings. I think getting the new pulleys and a new belt sounds like a good idea, I don't want to keep having issues. This car isn't my daily driver, but running stacked 181/65.. do you think it will be reliable? Like I could drive 500 miles without a tow truck following me? lol


You've been a Big help Chris and it is greatly appreciated.
Hi Mocross, The Needswings PSK/BWK should take care of your needs (you did mention to Rob that you are running 181/65, correct?)

as far as the reliability of running stacked. that really depends on how thoroughly you set-up the car for this "approaching-extreme" set-up. These cars are nearly bulletproof as built with a reasonable safety margin .... but start adding more boost and you need some precautions (proper tune at the least) ... add more boost (as in your set-up) and you SHOULD monitor your A/F ratio... or at the least, have a custom tune done on the dyno. It is likely (depending on altitude where you drive) that you will find that in order to keep correct Air/Fuel ratios, you will need to go to larger injectors and a better fuel pump.

there are at least a few on this forum that run this set-up that have participated in threads discussing the particulars ... I would read those threads thoroghly.

hope that helps!
Chris

P.S. Do keep your tow service fees up to date in any case
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