Help w/ wiring for 3.2L into a 69 911E

[sdether]

Just acquired a 3.2L to swap into my 69 911E. I bought the car 2 years ago with the intend of doing this swap, not realizing then that the 69 has probably the funkiest wiring of all the early long wheelbase cars. Ho hum.

Anyone on this board do the wiring of a later engine into a 69 that could give me some pointers?

thanks,
arne

[Randy Webb]

- worse case if you intend to use DME

- in any event you need to check the pin-out on the 14 pin connector carefully

[stlrj]

You will need wiring diagrams for both your 69E and the 3.2 so you can repin your 14 pin connector.

[Tyson Schmidt]

You'll also need to make an extension to reach between the '69 connector clusters, and the new location in the left rear.

[chuckw951]

Wiring in the 1969 911s is unique to that year model car. There is no 14 pin connector, but rather a series of 4 plugs in the back of the car. You'll need wiring diagrams for both cars.

I think you'll need to create a custom wiring harness to go from the 6 pin plugs to the 14 pin connector.

I just happen to have an extra 14 pin connector/pins a bunch of multi-color wire if you want to give this a shot.

Here is a picture of the connector and the wiring I bought for my swap project.



I bought one of these...91161201003...(not sure what it is for) to plug into the plug for the gauge package. Then I used the right color wire (ie purple/black for the tach, blue for alternator light on gauge, etc) for the custom harness and connected everything together with blade connectors.





The ignition and relating wiring is a bit trickier, with the 69E you have a voltage regulator and 3 pin CD box. With the 3.2 I'm sure the voltage regulator is internal and I don't have a clue about the ignition system.

In my view the way to approach these swaps is by looking at the systems (ignition, wiring, oil cooling, trans/clutch, fuel) and figuring out how to adapt each part. Good luck will be a fun car when you're done.

[chuckw951]

So what are you going to do with that 2.0 E motor?

[chuckw951]

Originally posted by Randy Webb
[B]- worse case if you intend to use DME[B]

Hey, don't sugar coat it, tell us what you really think



Could be worse, could be a 3.6 into a 69 car.

[sdether]

Originally posted by chuckw951
So what are you going to do with that 2.0 E motor?

Posted it here first, but i got a buyer for the long block, so i'll be parting the exhaust and webers out separately.

Thanks for the suggestion on building the harness. That's likely the path I'll take. Where could I get the wiring diagrams for the 3.2 and the 69E from (and yes, i am going the DME route)

cheers,
arne

[chuckw951]

You can find the 69 E diagram at

http://members.rennlist.org/911pcars/WiringDiag.htm

SL 33 diagrams

Here is another PDF all on one page
http://www.scatliff.mb.ca/pelican/Electrical_Schematic_SL33(vhigh).pdf

See this thread:
early wiring diagram - download here

Not sure about the 3.2 diagrams or pin out for the 3.2 14 pin plug.

[Randy Webb]

There was an article in Pano about putting a DME engine into an early car -- a few years ago & not sure how detailed it was.

[sdether]

Just a sanity check, to see if i'm being naive:

I'm installing a Carrera oil cooler, so oil connections on the swap look like they should work.

I got a 915 to go with the 3.2. The mechanical hookups from the 901 and 915 look the same, so i'm assuming the halfshafts will fit.

Electrical is the tricky part. I have the 69E wiring diagram (thanks chuck) and a pin out of the 3.2L, so that's gonna be a project for figuring out the wiring. I'm likely to need some new sender units. Will figure that out.

Last thing i have no clue about is fuel system. I used to have the dual lines from the tank to the Carbs, but because my pump failed i switched to a Holley Red and used a single line (i.e. no return line.). I assume i need to put the return line back into service to work with the 3.2 fuel injection, but is it going to be that simple?

thanks,
arne

[jpnovak]

Arne, The Carrera motor will not connect to your early oil tank. The fittings are a different size. You can mount the 69 engine oil cooler to the longblock and it will work(suggested). Replace the oil cooler seals while you are at it. The other option is to cut the inside of your engine bay and install a later (72+) oil tank. There may be adaptors for the hoses but I could not find any.

The 915 ande 901 have different pin configurations on the ouput shafts. The 901 will have 4 bolts and two pins, the 915, 6 bolts. you will have to find two CV joints for a 915 and swap them onto your drive axles. They are held on with a Circlip. Rebuild them all while they are apart.

[chuckw951]

For my set up I used an early engine cooler and the stock early tank, no front cooler at this point but I will need to add one soon.

Incidentally I bought a used early oil tank with an adapter that allows you to use an early oil tank with a late year S hose, I believe the previous owner of the tank was running a 3.2 with it and then decided to upgrade to a later tank. I'll take a picture of the adapter and post it tonight. The other line you need to think about is the one coming from the oil scavange to the external oil thermostat.

With regards to the carerra oil cooler....I assume you will be installing that in the fender well....will it fit with the battery box? Also, I don't think the 69E had the "idents" for the oil cooler lines by the right rear tire so that might be difficult.

[sdether]

Need CV joints, check.

Hrm... Need to check with the buyer of my longblock whether he needs the block oil cooler or not since that's spoken for

Originally posted by chuckw951
With regards to the carerra oil cooler....I assume you will be installing that in the fender well....will it fit with the battery box? Also, I don't think the 69E had the "idents" for the oil cooler lines by the right rear tire so that might be difficult.

I had a body shop cut out the right hand battery box, to make room. I'd already done a conversion to change my car to a single battery in the smugglers box. Everyone in the local club that's had to install an oil cooler basically runs the lines bolted to the bottom of the chassis on the right side.

[jpnovak]

Yes, the late hard lines will work but becareful with the fittings. The late fittings are larger diameter than your early car. You will run into problems mating the hardlines/thermostat to the engine oil cooler and tank.

When I did my installation I used the late oil tank and engine oil cooler bolted to the 3.0. I did cut the engine bay to make it work.

the fender mount cooler will fit behind the batt box but it restricts air flow. Better to have it cut out as you have already done.

[Randy Webb]

"you will have to find two CV joints for a 915 and swap them onto your drive axles. They are held on with a Circlip"

- they may notmatch - my 901 tranny would not hook up to my 1973 car. I used instead a 911 trans. Your mileage may vary.