B35/L-Jet/Motronic conversion

[sfdon]

A few thoughts for you....

Home depot now sells the very nice 3M friction tape. Try it and I think you will like it.
Plan on 3-4 rolls. Remember that you will be deleting the purge valve wires, the oil level wires from the harness.

Be very careful with the black wires to the coil, ecu, engine connector and diagnostic connector- they are shielded by the brown orange wires that go direct to ground. Any screw ups thhere and you will send unfused +12volts through the coil and right into the entire harness.

For the ecu molex to go through the firewall- I measure the molex connector and then cut with a dremel. From memory the hole is 1 1/2" x 2" . Be very careful as you will be cutting right next to the brake lines. I have seen people cut 2 holes- 1 into the cowl area and then 1 into the glove box area. I don't care for that and just cut 1 hole directly into the glove box.

Normally the fuel rail needs to have fuel hoses bent a bit to fit properly.


I have 3 of the conversions that I have done registered for Monterey tomorrow- if you want I can take some pics for you.

Don

 

[sfdon]

Just a thought- try to make that harness as long as possible from the valve cover to the glove box. The e34 harness is rumored to be shorter than the e24 or e32 harness and thats not good.

 

[JhwShark]

I have used Silicon wrap tape for re-wiring my 928 instead of friction tape. Duluth Trading company (800-505-8888, or http://www.duluthtrading.com/store/products/42042.aspx); they sell mostly outdoor clothing but searching for Silicon tape they were the cheapest source for large roll (35') $19.95 and even less for 3 rolls. Most of what I saw was 10' for $12-20.

Jon

 

[teahead]

These the injectors to get?

http://www.ebay.com/itm/Standard-Mo...m280a2141fd:m:mkV5UmwuUAGcm02fBQHxkOg&vxp=mtr

 

[sfdon]

And the rubber rings ti fit...

http://www.realoem.com/bmw/enUS/showparts?id=3995-USA-04-1981-E12-BMW-528i&diagId=13_0209

 

[mulberryworks]

Wrap it up

For wrapping wires in my 2800cs, I got some German tape called Coroplast which looks to be pretty authentic. At $10 a roll it's not cheap, but while I got some Chinese knock off tape to test at half the price, I'll stick with the German tape for the E9. The URL for the Ebay listing is below.

http://www.ebay.com/itm/171642579477?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

Ian

1970 2800cs Chamonix over blue
newian.me

 

[teahead]

Sorry, such a noob on this.

So if one goes w/a 3.5 rail, one can go w/those Vanagon injectors? Going from L-Jet, can one use the harness w/these injectors or are the clips different? Or should you just use the 3.5 harness?

Also, I gather no problem using this rail w/a L-jet manifold?

L-Jet w/stock rail:

And those injectors will fit the L-Jet manifold???

 

[sfdon]

Vanagon injectors go on ljet fuel rails period

 

[afeustel]

I think what Don is trying to say is that with the stock L-Jet intake, the injectors come off the intake at a slight angle (not vertical) however, you will notice that the 3.5 rail has the injectors coming off perpendicular to the rail. So if you try to use the 3.5L rail on the stock L-Jet intake, the injectors will not seal at the intake, because they need to be at a slight angle and the rail will not accommodate that angle.