If you are adding a supercharger one of the things you should be doing is reading the Workshop Manual. You need to familarize yourself with all of the car's (and motor's) systems so you know what effects you will be having on them so you can figure out how to get everything to work. Running a motor and not being able to use engine vacuum to run some of the systems in a Delorean will present some challanges! This is why a turbocharger is, in some respects, an easier installation. If you are adding an electric supercharger maybe you can turn it on and off so you have vacuum most of the time. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski - DMC Ltd <martin@xxxx> wrote: > > Hi Nick > > You seem to be a bit confused here, but I'll see what I can come up with... > > >My question is how exactly does the crankcase get it's vacuum?? > > > The crank case is vented through the oil filler. It's not necessarily > under vacuum at all times. > > >and > >what purpose does the brass tube under the fuel distributor serve in > >relation to this (if any. > > > The brass pipe under the metering head, or under the whole intake > venturi? The one directly beneath the metering head is the idlespeed > throttle-bypass. The big long one with the cold start injector on the > end serves to apply engine vacuum to the oil filler, to the charcoal > cannister, and connects directly to the centre of all siz intake ports, > so is connected to the idlespeed motor, and the cold start injector. > > >I have removed all the old EGR system so do i still require the hose > >off the brass tube to the small tube on the filler cap?? > > > The DeLorean engine does not have EGR. But the answer is yes, you still > need that. I would install a non-return valve in it through so you d To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/