DUI Distributers

pokey · Mar 23, 2011

http://www.performancedistributors.com/fordssdui.htm

After frying yet another ignition module I am going to get rid of the factory type system on the 351w in the jeep. Looking at these DUI units instead of a cheaper type HEI. Anyone use these or have any experience with them ?

Phantom 309 · Mar 24, 2011

I ran one on a 454 that I built for my jet boat several years ago. At first the cap kept cracking on me. I went through three caps in three weekends. I was running their clear one and it turns out there was some problem with the extrusion process. I ended up just running a solid colored one and that solved the problem (I think they quit selling the clear after that.)

The other problem I had was that oil kept showing up inside the cap. I couldn't figure it out and ended up having to send it back to Davis. The oil was being carried all the way up the shaft and pumped into the cap. They drilled a small hole near the top (just under the base) to let the spill out and back into the engine. Kind've hokey for an expensive dist. but it worked.

They were pretty helpfull through all of that and got things taken care of pretty quick but it still seemed like they should have had stuff like that worked out already.

After that It worked flawless for the rest of the years I had the boat.

zukkev · Mar 24, 2011

Give randy in our club a call (silver sammy); I believe he bought a DUI for his 460, and went back to the Ford ign after several issues....but i may be wrong on the brand of aftermarket dist he used....
I have heard a lot of good things about DUI for years...I've also heard about the oil pumping thing as well...

Totalled · Mar 24, 2011

http://www.junkyardgenius.com/ignition/jeep/HEI01.html

Or you could quit buying the cheap modules that are known to fail. Rock auto stocks motorcraft modules.

CHOP SHOP · Mar 24, 2011

PHANTOM 309 said:
I ran one on a 454 .

Why? The general made a stock HEI for that engine that kicks ass all over aftermarket junk. Why change?

WHITE TRASH1 · Mar 24, 2011

A friend has one in his 302 ferd and has been super happy with it for years.

zip1 · Mar 24, 2011

I run a DUI in my AMC401, no problems

Phantom 309 · Mar 24, 2011

CHOP SHOP said:
Why?

Because I wanted a clear cap:fawkdancesmiley:

I needed a Marine App (or at least that's what I wanted at the time) and was looking for something with some serious output. Everyone I was running with was mostly using Mallory and I just wanted to be different.

WHITE TRASH1 · Mar 24, 2011

PHANTOM 309 said:
Because I wanted a clear cap:fawkdancesmiley:

You know those caps were sold separately right? Not that it did ya a lot of good either way. :haha:

Binder · Mar 24, 2011

Looks to me like GM HEI distributor modified to fit a Ford.....It's a simple system but they also use a module that's somewhat prone to burning out...

CHOP SHOP · Mar 24, 2011

PHANTOM 309 said:
Because I wanted a clear cap:fawkdancesmiley:

I needed a Marine App (or at least that's what I wanted at the time) and was looking for something with some serious output. Everyone I was running with was mostly using Mallory and I just wanted to be different.

A stock chevy HEI with a hot coil and the proper weights/springs can easily be good for 8000rpm.

The design kicks so much ass its the one that DUI copied to put in other makes of engines like AMC and Ford and Dodge and I0ve even seen them on 22rs. This gives these engines the simplicity and reliability of a stock GM HEI.

I didnt understand why you would spend allot of money on a reproduction of OEM? The only diff that I know of is DUI is supposed to come with a hot coil and a fancy module.

A box like a 6AL and a stock gm hei cant be beat. No box is better IMO, less parts to trust.

WHITE TRASH1 · Mar 24, 2011

Binder said:
Looks to me like GM HEI distributor modified to fit a Ford.....It's a simple system but they also use a module that's somewhat prone to burning out...

Captain obvious to the rescue eh? :flipoff:

The majority of parts store modules usually die from overheating. Make sure the proper heat transfer paste is used under it and stop buying them at the local auto parts store. Go to the dealer and it'll last another 200k. :cheer:

Phantom 309 · Mar 24, 2011

CHOP SHOP said:
A box like a 6AL and a stock gm hei cant be beat. No box is better IMO, less parts to trust.

I wouldn't really argue with that (I ran the 6AL behind the Davis.) Like I said though, at the time I needed (wanted) the Marine app and that forced me aftermarket anyway.

...and my clear cap was special, Trashy.:redneck:

Phantom 309 · Mar 24, 2011

...and yeah, you're right Chop Shop. DUI's big claim to fame (in thier eyes) is thier coil. In most of their advertising that's what they're trying to beat into the consumers head.