Tennispro1986

I'm surprised nobody has yet to make a supercharger pulley removal and installer tool. Seems like most people are taking their blowers off so they can have the old pulley pressed off and the new one pressed on. I know for many applications, like let's say the Shelby GT500, they make a simple removal and installer tool. A piece that goes over the pulley, then a piece that presses against or threads into the center of the snout where the pulley is attached, then you pull the supercharger pulley off. Installation would be simply threading in a bolt with a forcing nut, and turning the forcing nut until the pulley is seated. I know east coast supercharging keeps the blowers on and has a tool like this, but I'm surprised nobody has come out with one yet. Would be a great option for swapping out upper pulleys versus having to take the blower off.

C7/Z06 Man

Tennispro1986

Doing a little research it appears there are no threads in the hub the pulley goes on, so I guess you could remove it with a puller but would need a press to press it back on. Looks like the same way the LSA and LS9 guys had to do it. I already had mine done at ECS but was thinking about actually doing a smaller one, which is why I was inquiring about this

dar02081961

There are several vendors selling a pulley removal tool. So it does exist already.

If a do it yourself-er doesn't want to purchase the removal tool to save the expense and risk they have a few options.
1.Take the snout to a local machine shop to have the pulley removed and the new hub pressed on.
2. Some vendors that sell the pulleys offer a installation service and or a snout exchange with the pulley of your choice installed.

You can use a common 3 jaw puller but its tricky and you will ruin the factory pulley during removal. For that reason this technique isn't recommended.

Hope this helps.

C7/Z06 Man

Which vendor offers the pulley removal tool.

dar02081961

Apologies I should have clarified "internet vendors" I didn't mean forum vendors.
I haven't personally tried any of these below. I bought a cheaper one not listed here and broke it.
But having done it, these below look strong enough. An ordinary pulley puller will be useless for this task.

https://www.lingenfelter.com/product/L950066509.html

https://planetsoarer.com/boost/boost.htm All the way down the page (thrasher)

http://www.3800performance.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=PU LLER-BUY&Category_Code=SCP_PS

http://www.billetflow.com/Pulley_Puller.htm

https://www.gumtree.com.au/s-ad/melb...112/1157439279

And this one below looks nice but I don't know for a fact they sell one that will fit our pulleys.
https://picclick.com/Alta-Pulley-2-p...743225773.html

And a possible,
https://store.snapon.com/Pitman-Arm-...--P635355.aspx

1QUICK Z

Pulling off the pulley is only part of the issue. You will still need to remove the blower to press on the new pulley hub. The snout does not come off without removing the blower. Ask me how I know?

dar02081961

Yep I didn't realize the OP didn't realize that.

You have to support the pulley shaft from the other end of the shaft as you press the new pulley on. If not the shaft and the bearings will be damaged.
So yes the SC has to be removed from the engine and the snout removed from the supercharger to accomplish this.
Not hard at all and doesn't take that long. But you will need to service the inter-cooler to replenish any coolant lost in the process.

timmyZ06

There is no way around it, you have to take the blower off and the snout off! You to hold the shaft while pressing the pulley hub back on. I took the snout to a shop, they charged me 20$ to take of and pressed on!

Tennispro1986

Okay well I was mistaken then I thought with a removal tool it could be done. ECS told me they keep the blowers on and have a special puller tool so I figured someone would know about it. Maybe they did take the blower off then.

timmyZ06

I cant see how you could press it back on without damaging snout bearing!

06mikez06

Bringing this thread back to life as I was recently informed by a shop here on the east coast that they are able to do an upper pulley change without removing the S/C. I'm very leery about this as everything I have read says you MUST take the S/C off to remove the snout and press off/on another pulley.

Anyone care to confirm or refute this?

Tennispro1986

I'm interested in what there is to say about this...

dar02081961

Unless they have developed an entirely knew process unknown to us all it aint possible.

I imagine if they machined a pulley that could slip on the shaft without much pressure and then keyed it by drilling a hole or recess into your shaft it could be done.

It could also be done by using a two piece pulley. However neither of these methods have been accepted as sound engineering for something spinning at 20,000 rpm.

Lastly they could drill and thread the center of your shaft which would allow them to pull a pulley onto your shaft. could be done with a precision set up but a little risky.

Let us know how they claim it can be done!!
I hope they can do it.

Tennispro1986

I definitely know they did not remove my supercharger to do the install the pulley hub, so now this has me concerned the bearings got damaged or something. I haven't had any issues but from what everyone is saying it definitely has me concerned now.

0bbbvettes.com

Youll kill the bearings in the blower pushing the new pulley back on.

Unless they have some clever way of putting a new pulley on, that does not require to be pushed on hard... I have no idea how they could accomplish it as of right now. I'm curious what their plan is, however.

RWSjr

Maybe warm the new pulley pretty good, use a bit of freon or something to really cool the shaft and try to push on without much force??? I dunno, just a thought....

383vett

The supercharger pulley on my Range Rover Sport is a press fit. I had a smaller pulley installed and watched the process. A puller similar to the ones shown in the threads above was used to pull the original pulley off. The new pulley was heated red hot with a torch and pushed onto the shaft with welding gloves. Maybe this is the technique that was used.

Tennispro1986

Well just to put an end to this little debate it doesn't matter how it was done....everything runs perfectly so obviously the install was done just fine. I started this thread to see if anyone sells a removal/installation tool for the upper pulley, not to debate on anyone's method on how they put it on.

383vett

You asked if anyone sells a removal/installation tool. It was pointed out that the shaft is not threaded so an installation tool could not be used. The possibility of a heated pulley could push on the shaft was mentioned. What is this “debate” you mentioned? If you don’t want ideas and comments, don’t post on a public forum.