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Supercharging a 1985 944 N/A - POSITIVE FEEDBACK ONLY!

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Old 08-24-2017, 06:59 PM
  #46  
willrobinson
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Originally Posted by Tiger03447
With all that, I must comment on the beauty of the alternator mount..looks like it was CNC'd. Nice welds too...perhaps it's just an optical illusion, but does the blower belt line up with the other pulleys well? Looks like the blower is set too far forward in it's relation to the other pulleys..?? No Gilmer timing belts here..LOL!
Yes you are right the blower pulley is forward, but only so far as the 2 extra ribs on the pulley, I still just have the stock 5 rib crank and alternator pulley. I set a straight edge along the back of the crank and alternator pulleys to ensure the belt run would be square. I may use a laser for the next time.
For crank and alternator pulleys I see lindsey racing does a 6 rib pair, this may be sufficient, plus given most of us may use a larger underdrive supercharger pulley to keep boost sensible, this should increase belt grip across the fewer ribs. If anybody has a source or reccomendation for these please chime in
Old 08-24-2017, 07:01 PM
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V2Rocket
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more ribs is better if you can get them, but keeping the physical size of the pulleys large helps too for grip.

this includes both the crank drive pulley, and the pulley on the supercharger.
Old 08-25-2017, 09:19 AM
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alex.rhodes
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Is it possible to add a supercharger and keep the A/C? If so, which would better fit the engine bay in that application, something like the Eaton m90 or a centrifugal? I'm not looking for insane power numbers, just something to add a little pep to keep up with modern traffic.
Old 08-25-2017, 12:50 PM
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V2Rocket
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That's what I was trying to accomplish with my bracket posted previously...but it would require eliminating power steering to put the alternator on that side of the engine.

There are kits out there (speedforce racing, 928motorsports) that use centrifugal blowers that allow you to keep AC.
Old 08-25-2017, 05:44 PM
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alex.rhodes
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My first 44 had leaky power steering so i just disconnected it. It was a bit rough in parking lots, but fine in all other instances. I'd rather have a/c than power steering. V2, would your mount require fabrication skills to make?
Old 08-25-2017, 05:53 PM
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V2Rocket
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it was cut with a plasma torch, ground with angle grinder, drilled with drill press and legs welded on so yes, some assembly required..
Old 08-25-2017, 06:55 PM
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Originally Posted by V2Rocket
That's what I was trying to accomplish with my bracket posted previously...but it would require eliminating power steering to put the alternator on that side of the engine.
I was considering options to solve this myself as it's pretty hot here in Australia to do without AC in summer. I was thinking the same, put it where the power steering pump is and go electric power steering, either using a motorised column as fitted to some small GM cars, or to take the electric oil pump from a modern vw/Audi. My partners Audi A1 one has a nice little unit.



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