Underdrive Pulley Question

- T
- Timmy Persaud
  
  Contact options for registered users
posted
20 years ago

Wed, Jul 9, 2003 12:38 AM

I have a 95 (regular)mustang. If I upgrade to a 160 Amp alternator and install an underdrive Crankshaft pulley, will I still be able to use the same belt? And what are some side effects of doing this? Thanks in Advance

-TIMMY

- L
- Larry Hepinstall
  
  Contact options for registered users
Vote on answer
posted
20 years ago

Wed, Jul 9, 2003 4:54 PM

IMO the very few HP gained from underdrive pulleys is not worth the cooling and charging problems on a street car. There are a lot better ways to make much more power without degrading cooling or charging performance. It's a different story on a 1/4 mile race car where these problems are of no consequence and every last HP is desireable.

LJH

95GT

- R
- Richard
  
  Contact options for registered users
Vote on answer
posted
20 years ago

Thu, Jul 10, 2003 3:03 AM

Now I've never had a cooling or charging problem with my underdrive pulleys (change all three, crank, alternator and water pump). Question, was this a problem primarily on pre '94 mustangs??

- R
- Richard
  
  Contact options for registered users
Vote on answer
posted
20 years ago

Fri, Jul 11, 2003 1:54 AM

I wonder if the problems that occur are the result of underdrive pulleys being misapplied. When I purchased mine IIRC there were two choices. One for street applications and one for track use. I'd bet that the problems, cooling and charging issues are related to the later being used on a car that is a daily driver.