i am confused on under drive pulley's

schultz9008 · 11-02-2008

so i want to buy underdrive pulleys but everyone that i have talked to here in my hometown have told me not to waste my time and money. i have a 2001 v6 5-speed. i just want to know some more information before i buy them. i also want to know if i replace all of them or which ones i replace. i know i wont get alot of horsepower from them. but i just want to know some more information or if they are a waste of money and time.

AkMustang1 · 11-02-2008

I definitely saw an improvement with my U/D pullies, haven't had any charging problems or anything like that. I had replaced two pullies, the alternator and the crankshaft pully. Got mine from americanmuscle and it works fine. The only thing was I had to get a new belt, a 95 inch one to be exact (I forgot what the stock was but it was way too loose). Some people consider them a waste of money, I figured I just did mine because it was cheap horsepower.

schultz9008 · 11-02-2008

alright cool thanks, i figured that i would do it anyways because i mean its extra horsepower and i want all the horsepower i can get. i was also wandering if installation was easy or hard. i saw a video how to change them but that was for a v8 mustang. do they have like a pack with all the pulley's in them or do you know.

whitepony331 · 11-03-2008

Quote:

Originally Posted by schultz9008

alright cool thanks, i figured that i would do it anyways because i mean its extra horsepower and i want all the horsepower i can get. i was also wandering if installation was easy or hard. i saw a video how to change them but that was for a v8 mustang. do they have like a pack with all the pulley's in them or do you know.

Did you see the installationg video on AutoHow.tv? Because eventhough it was on a V8, it's pretty much similar when you're installing your new UDP. All you'll need is a torque wrench and a pulley puller tool.

Are you deciding to go Forced Induction (Turbo)? Non Naturally-Aspirated (Supercharged)? Or Nitrous in the future? If so, the size of your UDP is very important when you're deciding to add LOADS of power on your crank...

schultz9008 · 11-03-2008

yes in the future i want to get a turbo, and what do you mean the size of the underpully. there are different sizes?i also just may be retarded. haha

ronnybej · 11-03-2008

yes there are different sizes, depending on how tight a pulley you want. having too tight of a pulley with a Forced Induction can cause some issues.

whitepony331 · 11-03-2008

I've only seen 25% or 42% reduction size of the pulley...

Honestly, I think it's best if you stay stock if you're going Turbo...but you could always ask Tom Shiner here at AFM about UDPs on a power-added V6.

Tis why I have decided to just stay stock...I'm going 4.2L Stroker Supercharged, I don't want my crank to suffer from that power...

I could be wrong though. [shrugs]