K jetronic

AntLockyer · Post by **AntLockyer** » Wed Jun 13, 2001 2:52 pm

For those unaware of this system, it has a metering head ontop of the airboxand the volume of air passing through controls the fueling.

my questionis this, do you reckon I could pass the charger output straight through the air box if I seal it off properly?

I've got a fifth ingector as well that I can control with boost.

thanks

GDRBO · Post by **GDRBO** » Wed Jun 13, 2001 8:36 pm

I think it would work better and be easier to accomplish as a draw thru.

bruce M · Post by **bruce M** » Thu Jun 14, 2001 1:57 am

Stick to draw through, thats how it was designed.

The mechanical flap is designed to meter air at atmos pressure. If you use parts from a 924 turbo you can achieve plenty of HP.

Its inportant the whole package is up to the job, ie pump , enrichment device and an aftermarket fuel pressure regulator can be used for higher boost pressures.

Evill Ed · Post by **Evill Ed** » Thu Jun 14, 2001 6:26 am

I use K-jet in my 914 turbo. The set up draws air through the airflow sensor. It works extremely well. I am currently running 10-psi with plenty of fuel delivery.
http://www.rennlist.com/edvturbo.htm

Bruce M, do you know of a source or brand name of aftermarket fuel pressure regulators for the K-jet systems?

Regards,
Ed

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bruce M · Post by **bruce M** » Fri Jun 15, 2001 6:51 am

I'll look it up this weekend.

Evill Ed · Post by **Evill Ed** » Fri Jun 15, 2001 11:12 pm

Thanks,
Ed

bruce m · Post by **bruce m** » Mon Jun 18, 2001 1:58 am

There is an adjustable rising rate fuel regulator made by Micro dynamics. distributed in the US by Veloce distribution (if my info is up to date).

They come in a number of versions that override the regulator inside the fuel distributer. You choose the rising rate you want (starts at 1/5 psi increase in fuel press for every 1psi increase in manifold press). this is fixed so you need to know which version you want, then set the base psi point (at zero boost).

The book i looked up didn't show the install but I would guess it just fits in the return line, but the return from the control pressure reg would have to be moved to a tee piece after the new regulator. Blocking the hole in the fuel distibuter if its a later version.

If this is used, the fuel lines must be in perfect condition as the pressure levels used in CIS are higher than Pulsed injection even at stock.

Hope this is up to date and they still make it.

Evill Ed · Post by **Evill Ed** » Mon Jun 18, 2001 5:30 am

Thanks, I have tried to find Micro Dynamics for a while now, but I haven't had any luck. I don't think Veloce is around anymore either.

I do have an Audi 5000S turbo WUR that I am going to install. So far, at 10-psi, I appear to be getting plenty of fuel with the system as is.

Ed

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