Mitsubishi 3000GT & Dodge Stealth Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
580 Posts
Discussion Starter #1
what would modifying my underdrive pulley give me?!?!
 

·
Registered
Joined
·
296 Posts
I am not exactly sure how it gives power, but I know that if you have a stereo system then it would be pointless to get underdrive pullies. It takes power away from your accessories.
 

·
Large Member
Joined
·
6,164 Posts
do a search next time..

An underdrive pulley replaces your stock crank pulley. it's smaller and lighter.. it lessens the amount of power supplied to run the electronics in your car and gives that power back to the engine.. so you'll have a little more power because the engine isn't getting robbed of all the power it was before in order to power your electronics.. if you have a big stereo, don't get an underdrive pulley.
 

·
Premium Member
Joined
·
1,048 Posts
Doesn't it work by taking power from the alternator or something and thus sometimes draining your battery if you have a powerful stereo system?
 

·
W3Si member #010
Joined
·
1,765 Posts
It does slow down the alternator and power steering. I have had no problem, other than the lights dim at idle. It makes most of its power by lightening the load on the crankshaft, not by underdriving. Lower rotational weight=less power loss.
 
1 - 7 of 7 Posts
Top