Imo000

The nearly 500 stock HP isn't serious enough? Most 928 owners would wish if they had 400, let alone 500hp.

BC

Its difficult to describe. Its seems like alot at first... Then you get used to it.

Power, search for traction, More Power... Search for more traction.

All while fighting major heatsoak.

Chris Lockhart

Lol, I feel better that I'm not the only one. I think I'm up to around page 135 so far. I wish I could find a twin screw (that I could afford) to replace the Eaton on my original Keel set-up. Like you said, you just do not see these superchargers come up for sale. I'm always watching flea bay and Racing Junk.com to try and find a used Autorotor.

bd0nalds0n

If you switch out the Eaton for an Autorotor, won't you need a new manifold? Or do the all the mounting holes line up identically?

Chris Lockhart

Different hole pattern but there are easy ways to plug the Eaton mount holes, either tapping/installing set screws or plug welding. Plus I have a blank upper intake that I can machine if necessary.

Chris Lockhart

I had already determined that the s/c pulley needed better belt wrap, and modified the existing tensioner bracket to add another pulley to help this. Thought I was done. Then, thanks to Tony Harkin's photos of his upgraded tensioner bracket WAY back in the middle of this 10 year thread, I decided to attempt to emulate his modification, so I had to start over from scratch. It seemed that every day I was seeing something else that I didn't like, and wanted to change. I hated the fact that there apparently isn't a 17 mm od standard or shoulder bolt for the tensioner pulley, so I got a .750 OD x 5/8-11 thread and a matching t slot nut. Then had the od turned down to .669" so it fit the ID of the pulley properly. Machined a proper spacer to set the gap between bracket and pulley, instead of 10 freaking washers like was on there originally. Then for the upper pulley to help with belt wrap, I had a pedestal machined so that I could have the correct gap, and not have to mess with shoulder bolts and t-nuts. Large diameter bolt from the back to hold it in whatever position within the range of adjustment, and a smaller diameter bolt and washer to hold the pulley on the pedestal. Plus I added an adjuster mechanism for the tensioner pulley. I'm pleased so far. Not sure whether to paint, powder coat, leave raw, or polish the bracket. We'll see.

Chris Lockhart

Another pic. Basically this kind of thing gives me something to tinker with during break time at work, and at home while I'm waiting on funding, or services.

Imo000

Cool! I would leave it unpainted or at a minimum, leave the areas where the adjustment occurs unpainted.

Chris Lockhart

Thanks. I think I probably will leave it unpainted.

Chris Lockhart

Darien, here's Tony's pulley bracket that was my inspiration. It may have been a copy of Louie Ott's, but I'm not sure because I can't see the pics of Louie's. (I guess it's been so long that they don't exist anymore.) I did see one pic somewhere that showed a very similar adjuster setup for the tensioner to the one I did, but it was on the front side instead of the back of the bracket. My setup can be swapped to the front, and I very well may do that, as it would give more support to the shoulder bolt/spacer for the tensioner pulley. We'll see.

Also a pic of mine just mocked up hanging off the supercharger snout. S/C pulley is not bolted on so the alignment looks wrong.

Chris Lockhart

Here's an earlier mockup including the crank pulley. It gives a much better impression of how it will look when installed. I did this before I had fabbed/installed the adjuster mechanism.

Darien

I love it There are slight changes to be made for the S3, but it would be awesome to have that upgrade!

Here you can see how the Throttle mount bracket come into play.

Chris Lockhart

Ooh, that is tight. You might not be able to use this type, as it needs a straight run down the driven side from the s/c pulley down to the crank pulley. Looks like the throttle mechanism bracket is right smack in the way, unless the camera angle is making it look worse. if you have a yard stick, see if you can lay it against both pulleys without any clearance issues. If not then that's an issue. You could possibly add a third idler pulley to that side to route the belt away from/around the throttle bracket. I didn't realize how close that bracket was on the S3's.

davek9

Removing the Andy Keel intake and it looks to be "glued" down ???
All 10 of the Intake to head bolts have been removed but this baby is stuck on hard.

Any suggestions or pry points that are safe to use?
I do not want to damage the intake or anything else at this point.

Thanks!!!

Dave K

Livio928

probably used an RTV type sealant and a little bit of prying with slight leverage is required. Do you have photos?