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ATI Pulley Change any tips ?

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Old Apr 19, 2003 | 08:33 PM
  #1  
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Default ATI Pulley Change any tips ?

WHat's the easiest way to get the pulley off my ATI p1sc charger ?
should i leave the belt on and try to remove the bolt ?
What should use as thread sealer
Loctite for the new one ?
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
jim

<small>[ April 19, 2003, 08:34 PM: Message edited by: GMC SKI ]</small>
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Old Apr 19, 2003 | 09:14 PM
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Default Re: ATI Pulley Change any tips ?

That's funny, I was just about to post the same question. I am going to put on the MMS crank pulley and need to change the blower pulley to a 4".
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Old Apr 20, 2003 | 03:06 PM
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Default Re: ATI Pulley Change any tips ?

I don'y have any tips but, I would like to know how many pounds you will be running. Please let me know how it works out for you. I might upgrade me pulley. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old Apr 20, 2003 | 03:30 PM
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Default Re: ATI Pulley Change any tips ?

take the blower off and and use an impact gun ( i used the electric one the local checkes had for alternator pully removal), just make sure you note what side the pully is oriented ( there is "shallow and deep" side to the pully, also don't forget to reuse the spacer ring under the pulley .
use red loc-tite for the bolt.
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Old Apr 20, 2003 | 10:39 PM
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Default Re: ATI Pulley Change any tips ?

No No No Impact gun! Get yourself a belt or strap wrench from sears or other and hold the pulley while loosening it by hand. It will require some strength but is well worth the effort. The impact gun will do nothing good for the step up trans gears, and may damage the unit. This is precisely why ATI voids the warranty when pulley changes are done outside the factory. Leave the impact gun for the lug nuts.
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Old Apr 20, 2003 | 11:31 PM
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Default Re: ATI Pulley Change any tips ?

I just finished putting on the MMS crank pulley and a 4.0" blower pulley. I just used the blower belt around the pulley and doubled it back around the pulley and placed the free loop in a bench vise. It worked great. I did try my strap wrench first but it kept slipping. Thanks for the idea cdk4219 (1dirtyZ, I was a little nervous about using an impact wrench but it sounds like you didn't have any problem with it). I hope to test it out tomorrow. With the 3.4# pulley and the normal ATI crank pulley I was seeing about 5-6 PSI @6700 RPM but I was making good HP so I don't want to push my luck by increasing the boost.

<small>[ April 20, 2003, 11:35 PM: Message edited by: Ken G ]</small>
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Old Apr 21, 2003 | 07:54 AM
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Default Re: ATI Pulley Change any tips ?

Ken, did you just get the MMS pulley? I'm waiting for them to send one out here. I'll have the same pulley setup as you. Do you have heads and/or a cam?
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Old Apr 21, 2003 | 08:44 AM
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Default Re: ATI Pulley Change any tips ?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by cdk4219:
<strong> No No No Impact gun! Get yourself a belt or strap wrench from sears or other and hold the pulley while loosening it by hand. It will require some strength but is well worth the effort. The impact gun will do nothing good for the step up trans gears, and may damage the unit. This is precisely why ATI voids the warranty when pulley changes are done outside the factory. Leave the impact gun for the lug nuts. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, I used an impact for mine...on ATI's advice. BTW, ATI only voids warranty because they assume you've changed the boost levels beyond the maximum (for warrantuy purposes) of 8lbs.
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Old Apr 21, 2003 | 03:45 PM
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Default Re: ATI Pulley Change any tips ?

AzzHauler,

I've had the MMS pulley sitting on my desk since late Jan. or early Feb. and have just gotten around to putting it on. I have stage 1 CNC heads and a mild comp cam with MAC mid-lengths (+cats). I did get a chance to drive the car a little today but didn't find a safe spot to try a good WOT blast. I am making more boost earlier with this setup but I don't know what my max. boost @6700 RPM's will be (I hope I didn't over do it). Also, I have the P1SC and I see you have a D1SC so you should see more boost with the same pulley setup. BTW, I am using a 40.8" belt and it just fits.

-Ken

<small>[ April 21, 2003, 03:47 PM: Message edited by: Ken G ]</small>
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Old Apr 21, 2003 | 04:20 PM
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Default Re: ATI Pulley Change any tips ?

when using the impact makesure you go slowly and that you have a pair of hands providing a firm grip on the pulley.
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Old Apr 21, 2003 | 06:08 PM
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Default Re: ATI Pulley Change any tips ?

I take the SC off the car.

Using an old belt looped around the pulley and doubled back, I tap on a socket wrench to loosen the bolt. Unscrew the bolt.

I spent less than $20 bucks for a puller like this:

<img src="http://www.hand-tools-power-tools.com/automotive/Automotive/gear_puller.jpg" alt=" - " />

Takes about about a minute or two to screw the pulley off.

To put the different pulley on, I heat it in the oven for about 5 minutes. With the shaft key in it's slot, I pick up the pulley with pliers and drop it on the shaft. One tap of the hammer and it is in place.

I put Red Loctite on the bolt threads and tighten it back down. Using an old belt looped around the pulley and doubled back, I tap on the socket wrench to tighten the bolt some more, and I'm done! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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Old Apr 21, 2003 | 08:51 PM
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Default Re: ATI Pulley Change any tips ?

Awww damn, I was hoping they started shipping. Oh well. Thanks for the info, looking forward to hearing your results.
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