I have a 5th gen Eaton with a stock upper pulley. I am going to add a mild +1.5 upper pulley. I am currently running about 13 psi of boost with stock pulleys on my 2000 4.0. My goal is to run about 15ish psi, so I think just the mild upper pulley will get me close enough. My overall goal is to barely break into the 12's in the 1/4 mile in street trim at street weight. The car ran somewhere in the mid 12's with the 18-19 psi I was running, but I don't "need" it that fast, so I'm reducing the complexity of extra fuel supply needed at that boost and lowering the boost down to a target of 15.

My question is has anyone removed the stock pulley without simply cutting it off?

Has anyone removed a stock pulley without destroying it?

I'm assuming I could just use a regular pulley puller, but I ***-u-med that before with the lower, which turned out to be a real bear to get off.

I simply heated the 1.5 pulley and it slipped right off the old supercharger it was on, so I'm pretty confident I can simply heat it again to slip it on the new super charger once the stock one is removed.

 

I read somewhere that they employ a 20,000lb press in the manufacturing of the factory supercharger, so it can be a challenge to remove.

 

If so then I'm starting to hear the sound of a cut-off wheel in my very near future It's not like I would ever consider going back to stock...

 

I use a puller to remove and fit the pulleys..... Made by me, works a treat, I never heat a pulley on the snout you risk drying out the bearings......

It's semi circular around 3/4" thick, a shaft at each end to keep it square, you then have the bolt this has a long 6mm piece of high tensile studding (I think, it's been a while since I have seen it) and an 10mm bolt with the 6mm screwed into it (again I am trying to remember this) take the bolt out of the snout and screw the stud in, have a nut fitted onto the larger thread, slip the puller behind the pulley, you also have a flat bar with 3 holes, 2 at the end to go over the guide pins and the one in the middle for the bolt, hold the bolt still and start doing the nut up, this pulls the pulley off. To refit you basically do the opposite but you dont need the semi circular part....

I am not sure I explained that very well? I lent the tool out to a friend of mine and have not seen it since!

I am going to design an interchangeable pulley, this will be a pressed on sleeve, the pulley will fit on the sleeve but bolted on with drive dogs, very simliar along the lines of the billet.com pulleys....

 

Jagwrangler has the proper heavy duty pulley that you can rent. It makes removal/installation pretty simple.

 

"I never heat a pulley on the snout you risk drying out the bearings......"

I heated the pulley to remove it from an old "throw away" blower. The shaft of that blower was still touchable after pulley removal. My plan was to heat the pulley off the blower and then slide it on the existing blower which is on the car. This way the new blower is never exposed to any amount of heat as the heat inertia of the pulley is next to nothing vs the mass of the shaft that will be cooled with a tiny bit of dry ice.