is it possible to use original management on a n/a car thats been turboed with breakerless ignition. i know old school distributors could be retarded manually but is there any way on a fixed breakerless system ?

 

Turbocharged cars generally have a rising rate fuel pressure regulator - the higher the boost pressure the higher the fuel pressure upto a set maximum

 

 

so if i get an adjustable rising rate fpr and some 635 injectors that should sort fueling then

anyone know an easy way to retard ignition on breakerless ignition ? from what ive read need retarded ignition for when on boost

 

Some dizzy's have a diaphram in them to allow retard on boost.

I dont know off had on that will direct fit an E30

Failing that, you can get a delay box to retard it for you, it just takes the pulse and waits a while before passing it on essentially.

 

it i used an early distributor with the vacuum advance on the side would it work opposite when it sees boost and retard it
?

 

As chip, dont know if still available but years ago turbo technics had a diaphragm type vacuum two way advance unit that advanced under vacuum and retarded the ignition when on boost, when i did a escort cvh in 93, for some reason had to use a bosch type dizzy and the advance linkcage rod had to be cut to give the required amount of ignition retard. i think the old audi's and saab had this advance unit. i was on the limit of det @ 12psi.

Regards Dave R.

 

The dissy boost retard capsule is off early turbo Saab's. i convert them to fit other dissy's, abit like TT used to.

But you can run a Micro Dynamic's EMs 5 or 6, to retard once boosting, and the 5 is adjustable to how much retard, @ what rpm, and also allows for the timing to be re advances after the det threshold has passed.

 

MSD do a boost timing control unit, it automatically retards a preset amount of timing per pound of boost IIRC.

it was called a boost timing master

 

Mark

 

cheers mate checked them out have to be run with msd management. they do a stand alone controler but its for points systems only

il keep searching the net though i know what im looking for now

 

Here's the one i have on my TT now. fitted with late xr2 dissy setup, and grpA coil.

http://modifying.demon-tweeks.co.uk/...EMS5&grp=RC014



and here's the cheaper version.


http://modifying.demon-tweeks.co.uk/...EMS6&grp=RP111