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  View original topic: GM HEI Conversion
hutdou Wed Oct 20, 2004 12:33 pm

Is any one using a converted GM HEI distributor for there type one, if so who converted it or where could I purchase. :)

myolbug Wed Oct 20, 2004 12:51 pm

look in a VW magazine for the DUI dsitributor. This is a GM HEI conversion, you buy it then hook it up. I haven't used it, but I do know it exists. Also, try doing a search on DUI here on the samba, maybe limiting it to the performance catagory.

Jake Raby Wed Oct 20, 2004 12:55 pm

I did it years ago... The advance curve is wasted on a VW engine as is, but you can tweak it.

Class 11 wannabe Wed Oct 20, 2004 9:12 pm



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

Looks like the price has come down about $90 since they introduced them. Guess they didn't realize at first how cheap most VW people are. The price is now comparable to a Mallory Unilite, and possibly an MSD also, so the GM style dizzy may show up on more VW's.
Check out the page I linked, running one of these means no mechanical fuel pump and no single mount carb. No biggie, but something to be aware of.

Glenn Thu Oct 21, 2004 3:25 am

Don't forget you need to remove the mechanical fuel pump, so the price it $70 higher.

And as Jake said... the curve isn't right out of the box.

Doppelganger Thu Oct 21, 2004 7:45 pm

Those wires aren't the cheapest either... Damn! 85 clams!

timmy74006 Tue Mar 22, 2005 5:29 pm

As a neophyte to HP VW engines, I bought one due to the clean installation and off the shelf replacement parts. When I ordered it, they asked me all the info on the engine, weight of the vehicle, and what I wanted in an advance curve. Basically I said I wanted the advance to come in quickly and give roughly 20-22° total advance at 3000rpm. I told them I would not be running vacuum advance and my plan was to use FI for fuel. I also stated that I wanted to have no hesitation due to distributor lag. Haven't tried it yet as I haven't built my engime yet, but they gave me a sheet showing the curve and said they set up quite a number of VWs succesfully. I have to admit it's a big honking unit, but I like the one wire hook up and separate tach wire. Anyone with first hand experience? All feedback is welcome. How else you gonna learn without blowing lots of $$$ in order to gain empirical knowledge.
Thanks,
Tim

Droolman Fri Mar 25, 2005 12:33 am

we have been running one that we cut down an machined to fit in a type 1 case over 20 years ago an still run it today in a 11sec. drag car locked down at 28* at 4000rpm. we will be at the texas bugginn next weekend in case anyone wants to look at it.the car is ME QUIK MAYBE

brianwheelies Fri Mar 25, 2005 2:26 am

do they offer these with vacuum advance?

i know they do for the v8 versions.

timmy74006 Fri Mar 25, 2005 10:46 am

brianwheelies wrote: do they offer these with vacuum advance?

i know they do for the v8 versions.

Yes. He asked me if I wanted with or without at the time of order. I went without, provided the advance came in quick enough to avoid flat spots, because I don't have a vacuum source for the dizzy. They didn't use to offer this, but enough people asked for it, that it is now an option.

brianwheelies Fri Mar 25, 2005 9:08 pm

i'd like to give one of those a shot but i just bought a svda.

TheNick80 Fri Mar 25, 2005 11:07 pm

This is the one from eyeball engineering. It allows you to run a stock fuel pump if you wish. Bruce can answer any questions you have about advance. Mine works great though

[/img]http://eyeball-engineering.net/Hei.html[img][/img]



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