Originally posted by ScottK:
Originally posted by todras:
You guys know an UDP for the crank on a Duratec is a no no right? It's why you never hear of ppl running them. The purpose of a DMD is to reduce harmonics. An underdrive will introduce more. Who knows maybe you won't have problems with one but I wouldn't chance it for the minimal gains.



My car just hit 90,000 miles this week on the highway, that is 70,000 miles of UDP life. There are lots of us still running them with no problems.

I noticed I hit 90k right after I got done running it to 6,800 rpms 3 times to merge into traffic like I do and have done many many times every day for the last 5 years. I thought pretty much everyone was at the point now where they realized an UDP on a duratec will theoretically lower your crank/bearing life, but it looks like it's so far out that none of us will care.




My thinking exactly. I will probably celebrate my 100,000 mile marker with a 3L anyways.

Originally posted by Who the F are You?:
does your family tree not have any branches on it?

99SVT 235hp @ 6550rpm 212tq @ 5350rpm