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Getting a pully off a powerdyne 

 

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 Post subject: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 3:23 pm 
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I am aligning the pully on my powerdyne and need to put some spacers to bring it forward a bit so the belt doesnt track. I wanting to know how to get the bolt on the front of the pully off safely? I dont want to damage anything internal and the thought of clamping the pully itself seems a little scary.

Any advice?


Cheers

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 3:29 pm 
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Easiest method I find is with the unit still fitted into the vehicle. If your lucky, you'll find that the belt is tight enough that you can crack the bolt loose. Otherwise, go and get another 6PK belt, put it on the pulley, pinch it with some vice grips (so that the belt wraps most of the way around the pulley giving maximum grip), them pull the belt tight (much easier to have a second person aid with this). Undo the belt.
To remove the pulley, heat it up, you'll find that since the shaft is steel and the pulley aluminium, the pulley will expand quicker with the heat and when hot enough will just pull straight off.
Reverse for reinstalling. Ensure that you use some sort of thread lock on the bolt thread when reinstalling, as the bolt can easily work itself loose and the pulley will get damaged if it is wobbling.

The pulleys being aluminium are soft, so I personally wouldn't put anything on them that could damage them (e.g. directly clamping the pulley etc.), using the rubber belt you won't damage the pulley itself. From experience, using a pulley puller to remove the pulley (instead of heating it as I mentioned above) can/will damage it.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 3:53 pm 
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cool, how do you heat it up? what tools and so forth?

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 3:55 pm 
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twr7cx wrote:
From experience, using a pulley puller to remove the pulley (instead of heating it as I mentioned above) can/will damage it.

i'll second that.
also i dunno what the powerdynes are like, but the steel shaft on the vortechs tends to get some surface rust, so an anti seize compound is a good idea on the shaft to make pulley removal easier down the track.

just use a little portable blowtorch to heat up the pulley.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 5:00 pm 
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I havent had much expirence with s/charging but how much for a smaller pully that gives me more PSI? is it say $75 or are we talking $250

im thinking "while its off...."

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 5:05 pm 
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$250 from CAPA, <$100 from everywhere else :lol:
US Ebay is a good spot.
Just make sure that whatever pulley you pick isn't going to overspeed the blower.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 5:31 pm 
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Any advice on the details?


Remember I have just had this "Bright Idea" and know nothing about it.

As far as i know its a standard powerdyne on my 4l. It currently has a 9psi pully on it.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 6:13 pm 
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vegabass wrote:
I havent had much expirence with s/charging but how much for a smaller pully that gives me more PSI? is it say $75 or are we talking $250

im thinking "while its off...."


Do you know what size your currently running? I have a 2.7ish" and 2.9ish" sitting here spare. 2.7" is as small as CAPA recommend on the Powerdynes on a Falcon. This should be around 9psi if your running it straight to the throttle body.
I run a 2.5", but then mines been rebuild with better bearings, belt, impellor and an active cooling system.
From memory CAPA charge around $150.00ish for new pulleys. US can be cheaper, but you need to be cautious as many of them the sizing is a bit different and they will require machining. When I bought my 2.5" I got it from 928 Motorsports in the USA, as CAPA refused to sell me 1 (tools, since the Powerdyne was out of warranty etc. (so they didn't have that to be concerned about), so they just lost my business and my respect), I had to have the back machined out somewhat.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 6:13 pm 
Getting Side Ways
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Steady ED wrote:
also i dunno what the powerdynes are like, but the steel shaft on the vortechs tends to get some surface rust, so an anti seize compound is a good idea on the shaft to make pulley removal easier down the track.


No surface rust on the shaft of mine after 3 years. I always put grease on it though before pushing the pulley back on - not sure if that helps?

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 6:14 pm 
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vegabass wrote:
cool, how do you heat it up? what tools and so forth?


I use a heat gun.
But for putting the pulley back on, you can heat it in an oven in your kitchen.

 

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 Post subject: Re: Getting a pully off a powerdyne
Posted: Mon Jun 29, 2009 8:12 pm 
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Thanks guys all this info is great. Ill keep you up to date.

I wouldnt mind getting an extra few psi, say 11 maybe 12 would be great.

 

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