I just won a set of March UDP's on ebay for $55, Just wondering do you have to change the stock belt size when using these pulleys or does it remain the same? If you have to change it what size do you need to use? What type of performance gains should i see from using these pulleys? Thanks in advance.

 

No you don't need a different belt the stock on will work just fine, you will see anywhere from 8-10hp out of them.

 

How dificult are they to install? Can one do them with regular home garage tools? How many are there? I thought it is just one?

 

The kit usually comes with (3) pullys (crank, water pump, and alternator pullys) Yeah you can do them at your home with just hand tools, The only thing you might have to do (and I have heard to just do it) is take your alternator off, go down to (Pep Boys, Advance auto, ect) and have them take the pully off and install the new one for ya, Unless you have a inpact wrench at home. othere than that it sould be a cake walk espically if you are used to working on your own car.

 

Just pray to God, you didn't win the piggyback style.[:'(]

 

Whats up with the piggy back style ones? The ones i won the guy got from summit for about a 119$ i think he said if that helps out any on telling which ones they are. One other ? will these pulleys affect the cooling of the cars engine?

 

I have piggy back March underdrive pulleys and have never had a problem from day one. They didn't yet offer the other variety at the time I put mine on. I like them and they perform perfectly without any belt wobbles, squeeks, etc. I do admit I would have put on the other non-piggy back type if they were available at the time but, hey, mine have been fine. Anything particular to look out for or warning signs of some sort?

 

go with steeda

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cant beet the march udp's for 55$