Measuring the vacuum? New VW Type1 installation& misfire

EDIS and Megajolt installation related topics. Be sure to review the <a href="http://www.autosportlabs.net/MJLJ_V4_vehicle_installation_guide">Vehicle installation guide</a>

Moderators: JeffC, rdoherty, stieg, brentp

bon_corno
Posts: 11
Joined: Mon Jun 11, 2007 8:31 pm
Location: Istanbul
Contact:

Post by bon_corno »

Hi Brent,

Approximately 30 cm of sensor cable go next to leads of cylinders 1 & 2. In the first image, behind the distributor, fuel pump and generator stand. There's no other alternative route I can think of except bringing it from the top or changing the place of the coil (it becomes too hot above the headers).

Sensor cable's length is not less than 1m. I bought an uncut loom, so it is the original cable. I don't know what kind of shielding it has, there's no open end. After reading Patriq's thread, I doubt if it has shielding! I will check it asap.

You're right about the bracket. A triangle at that point will make it more rigid, waiting the weekend for this.

mwman
Posts: 34
Joined: Mon Oct 01, 2007 12:10 pm
Location: Epping, Essex.

Post by mwman »

I play with RF a lot so this may help.
On a shielding note, a quick way to shield / screen a cable is to use coaxial cable outer braid.
Depending on the OD of the cable you are trying to shield use either RG 213 (thick 10MM) or RG58 (thin 5MM). Cut the required length, carefully strip the other sheath, this should reveal a copper woven braid.
This is like the old Chinese torture rope, compress it length ways, this will release it off the coax core.
This can then be slide over the cable you wish to shield, cover with shrink sleeve, earth one end only.
This may also help in noisy installation where the cable already has a screen, this technique is used in some aircraft ADF installations (Collins).
The braid is also very handy as earth straps.

Regards
Simon

bon_corno
Posts: 11
Joined: Mon Jun 11, 2007 8:31 pm
Location: Istanbul
Contact:

Post by bon_corno »

Hi all,

After a long period, I could spend some time for changing the ignition back to EDIS and MJLJ. I was more focused on the new engine during last few months.

I made three changes. I didn't want to make all changes at a time, but had no other choice. I welded small support parts to the bracket, changed the route of the VR sensor's cable and although the cable was already shielded, I added extra shielding by using adhesive aluminium tape. Maybe changing the route was enough. Sensor cable was going next to two plug leads.

Anyway, the problem is gone and I'm happy now! :D

Thanks a lot for the support and advices.

Ibrahim

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