944girl

Hi,

Does anyone know if there are still some manufacturers making aftermarket under drive pulley's for our 944's?

Have any of you recently bought and installed them?

Thanks,
CH

MPD47

To my knowledge, no. Why would you waste your money anyway?

Dave951M

I think Broadfoot used to make them, but I don't know if they're still in business or not. About the only thing you can really "underdrive" are the AC, alt and PS. Past that, the t belt drives the waterpump. Probably a better mod would be to ditch the PS setup entirely and go to a manual rack. Eliminates weight and parasitic drag from the pump.

MPD47

Only belts on my engine goto the waterpump/cam and AC.

Broadfoot did make some awhile ago, but they are no longer in business I believe. Besides, I'd never deal with them anyway.

knfeparty

How hard to drive is the manual steering compared to disconnecting the PS pump belt? It's easy enough to pull that belt off to see what it is like without PS, but I imagine that a manual rack is easier to drive than a disabled power setup.

Dave951M

Manual rack is slightly easier than the PS without a belt. Also, manual is slightly faster lock to lock. The PS sans belt might be an aggravation at very low speed or parking.

MPD47

It's rough when parking, other than that it's fine.

pjburges

Converted mine to manual over christmas break and I concur parking sucks but it teaches you how to drive and feels great on the highway.

harrisonrick

Wouldn't disconnecting the belt and driving it hurt the pump over time? Maybe cause a leak?

pjburges

its not good for the rack and the ratio is too high

fork_included

how about lightend crank pullies, anyone out there making these suckers?

Dave951M

Not hard to do yourself if you have access to a lathe. I think the main issue would be if they are balanced from the factory. Any weight reduction you do would upset that and they'd have to be rebalanced.

fork_included

how about simply creating a new one out of lighter materials?

i'm suprised that almost every single other "tuner crowd" has these products for their cars yet the porsch is sitting quiet, and this goes for some other things as well...


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also, anyoen bother taking the alternator apart for fun? ... anyway, those alt pullies are HEAVY, honest to god its like they are made of lead, i think a tiny bit of power and response could be picked up if someone designed a lightweight alt pulley.

Camaro_Muncher

Thats because a Porsche was already designed for performance, unlike a Civic which needs to be highly modified to be a "performance" car.

fork_included

says who? and now i dotn want to start a flame war here but the only thing thats not "performance" about a honda is chassis design, and that only applies to the newer cars, take any EG coupe/hatch and thats a rock solid platform to kick *** in, at sub 2000 lb race weight a stock engined' honda zips around the track nicely.


also, my car, an 83 944, isnt exactly a "sports" car either, at 2700 lb and 140 hp a typical 240sx could probably put me to shame

the point is, the stock crank and alt pullies on a porsche are heavy. a properly balanced aftermarket unit made lighter will improve performance.

but i guess most porsch guys are all about adding boost rather than tackling the "small stuff"