Underdrive pulley for 4-potters?

[gwumpkus]

Has anyone managed to find one of these?...seems to be more rare than a working E36 glovebox hinge!!!!!!!!!!i can find plenty for the 6-potters.. or is it that the 4-potter's are not worth underdriving ??..hahhah....thanx!

 

[willie]

what do u mean by underdrive pulley?? what is that?

 

[gwumpkus]

Originally posted by willie@Jul 13 2005, 04:41 PM
what do u mean by underdrive pulley?? what is that?

these are aftermarket pulleys that replce the stock ones, but of different ratios (and weight of course.. that reduce parasitic drag on your engine...

 

[fabianyee]

no need lah...

 

[pussy]

Originally posted by fabianyee@Jul 13 2005, 04:05 AM
no need lah...

yours of course no need lah.. :rofl:

 

[fabianyee]

Originally posted by pussy+Jul 13 2005, 10:24 PM-->QUOTE (pussy @ Jul 13 2005, 10:24 PM)

 

[gwumpkus]

Originally posted by fabianyee+Jul 13 2005, 11:21 PM-->QUOTE (fabianyee @ Jul 13 2005, 11:21 PM)

Originally posted by pussy@Jul 13 2005, 10:24 PM

 

[teejay]

careful when doing this.....

consideration should be taken about torque multiplication with the functions of the crankshaft and rotational inertia should be taken seriously, this is more critical if the flywheel is the single/liteweight type

deeper engineering clarifications can be researched or made known by our resident engineers (bundy,jules,etc)

 

[gwumpkus]

Originally posted by teejay@Jul 14 2005, 10:54 PM
careful when doing this.....

consideration should be taken about torque multiplication with the functions of the crankshaft and rotational inertia should be taken seriously, this is more critical if the flywheel is the single/liteweight type

deeper engineering clarifications can be researched or made known by our resident engineers (bundy,jules,etc)

actually...its a well known fact that the CRANKSHAFT pulley be left alone!!!.... underdrive the a/c etc all u want...but crannkshaft is no-no...cos of the harmonic damping thats arleady been designed into it....

either way, i have no wish to play with the crank pulley....just trying to liberate some power from the a/c etc... esp the a/c... now whenever i need to power up to over, i turn off teh a/c for soome more juice...so embarasing......hehheh..