Evilempire1.3JZ-GTE said:
I bought the complete unorthidox pully underdrive kit i think it was mvp or one of those complete kit for just under $400
I have a 110 amp alternator so the under drive system does not effect it.
Been running with it for about a year no crank walk or problems people make up about them.
beside the biggest crank destroyers is huge multi disk clutch systems that put to much strain on the crank directly from the back of the engine.
Ive never heard of people relating the crank walk to an underdrive pulley. I dont really know why you would either. All of the crank walk I have seen has been related to SINGLE plate high-pressure clutches.
There are 2 ways to increase the holding force of a clutch: Surface area and pressure. Materials matter too, the other factors make the biggest difference.
Multi plate clutches, by design, are better for a thrust washer than a single plate. A multi plate clutch rated for 800 hp (for example) wont exhibit the same amount of pressure on the thrust washer as a single plate. Look at the ratings for multi plate clutches.... Look at the clamping force... Clamping force is a synonym for "force on your thrust washer". High clamping force isnt always good for your engine.
Sure, many people have success stories with their single plate. Lots of others dont. Including myself.