Please list 3.2 conversion parts needed for my '71

[PcarPhil]

Please help me out. I'm pricing out 3.2 conversions and I need to make sure that I will be getting everything I need for a complete 3.2 conversion into my '71 911T.

Edit: Updated list

1. 3.2 engine, DME, and wire harness.

2. 915 trans.

3. 915 shifter and shifter rod.

4. complete half shafts from donor car.

5. EFI fuel pump, filter, hoses.

6. 73+ oil tank, lines, and cooler.

7. rear torsion bars and aluminum trailing arms from donor 3.2 car.

8. alter the pinout for the 14 pin elec. connector.

9. get the speedo, tach, oil temp. & pressure gauges to work with the new engine and trans. The oil pressure senders have different sized screw threads on them and will not interchange.

10. 74-89 gas tank

-Kaefer

[jpnovak]

HMM,

Lets start with the 915. You will need the shifter and shift rod for a 915. The 901 stuff will not work. You will also need some CV joints that mount to the 915. Difference is a 6 bolt design replacing a 4 bolt/2 pin design from the 901. The CV joint will attach to your current half shaft. Another option is to use the Al trailing arms, stub axles and complete half shaft from donor car. YOu will also need to modify the tranny tunnel to clear a 915. this is just strategic hammer bumps to clear the mounting ears for the nose cone.

for the engine you just need the fuel pump, some new fuel hose, filter assembly, the engine, all its ancillaries, the DME and wiring to the DME. Everything should just bolt in and require a bit of wiring.

Search for Mark A's (maresqe?) on the board. He has a wonderful page on converting a 77 to a 3.2. Your installation will be very similar with the addition of the tranny.

edit, I forgot the oiling system. You will also need to cut the tub to install the later 73+ oil tank or install a 71 oil cooler on the engine. They have different size fittings and will not interconnect. I have heard there are some new adaptors but I don't know for sure. You will likely need to install an external oil cooler up front. Under the bumper is best for cooling. Fender well fits with stock configuration.

You will also need to upgrade the rear torsion bars. The extra weight of a 3.2 will not be kind to the handling of the stock TBs. At the least there will be a ride height adjustment to compensate for the extra weight.

[IROC]

Here's Marc's website. I used it quite a bit when I installed my 3.2. Pretty helpful.

http://www.pelicanparts.com/MotorCity/marcesq/

Mike

[Dantilla]

I had a wrecked '87 parts car. Whatever I needed was sitting right next to the '73. Great way to go.

[PcarPhil]

Originally posted by Dantilla
I had a wrecked '87 parts car. Whatever I needed was sitting right next to the '73. Great way to go.

This is the way that I really want to do the conversion. Though I'm having a bit of trouble finding a decent deal on a parts car.

-Kaefer

[PcarPhil]

Originally posted by IROC
Here's Marc's website. I used it quite a bit when I installed my 3.2. Pretty helpful.

http://www.pelicanparts.com/MotorCity/marcesq/

Mike

Yep, I've been reading up on the conversion using this site.

-Kaefer

[randywebb]

Jamie - I think he has a 911, not 901 trans. Those CV's will mount right up -- I put a '71 trans. into my '73 ... and it has the later Al banana arms too.

I have pics of a way to mount the 915 trans support bar with its replaceable rubber mounts onto the early trannies. Search for it. You can also et approx. dimensions to make it off the pics as ai included a ruler in the image. Make yours a tad thinner than mine to center the

If you can get a wrecked Carrera ('84-'86) you are in business. Xfer the entire front and rear suspensions to save wt. and get more stiffness, the better brakes and shift tower, and the seats are lighter too (if not motorized). Not to mention the engine. My car is a '73 body riding on '86 hard pieces and engine, with the 911 trans. and Recaro SE's.

I had no problems connecting my '86 engine with carbs to my 73.5 oil tank - not sure about your year.

Patrick or Kennedy sell the adapter flywheels for these conversions - see my thread re mine not being correctly balanced.

You need to alter the pinout for the 14 pin elec. connector.

You need to get the tach, oil temp. & pressure gauges to work with the new engine. The oil pressure senders have different sized screw threads on them and will not interchange.

[TRE Cup]

don't forget the gas tank! the old one will work, but evertime you are below 1/4 tank, the motor will starve out on hard turns- you can use a 74-89 model

[chuckw951]

Kaefer,

This sounds like a fun project. I think you should think about the swap in terms of systems and then developing a list of the parts and information you'll need to make each system work. It's easy to get overwhelmed by projects like this. But the good news is that you've probably come to one of the best places (if not the best, thanks Pelican Parts) for information and advice about motor swaps into early cars!

Engine
-need brain box and wiring for 3.2 motor
-adapt fuel lines, change fuel pump?
-new fuel lines from tank? Is the return line to the tank present and/or needed for 3.2 swap? I'm not sure.

Wiring
-gauges - see below
-sensors for FI system
-alternator wiring (3.2 has internally regulated alternator, 71 car has regulator on panel left rear I think)
-adapt wires to 14 pin connector, need wiring diagrams/pin out chart
-connect starter, wire starter solonoid
- ignition system (not sure if any changes are needed here)

Gauges
-backdate sensors on engine
-need later tach (?)

Oil cooling
-need to adapt oil line that goes to oil tank from scavange
-need to adapt "S" hose from oil cooler to tank
-front oil cooler needed?
-oil lines to front of car; oil thermostat

Heating
-backdate heat system, need older engine tin, heater ducts at cooling fan.

Linkage
-adapt throttle linkage (if necessary)

Transmission
-915 transmission OR 911 transmission
-If using 911 transmission, need to add flywheel sensor (?)
-915 trans would require different clutch cable/shifter assembly
-new clutch package while you are in there?

[jpnovak]

Hey, don't forget a possibly new speedo. The 78 donor had an electric speedo. Early 911s were mechanical. you need the new gauge and to run a wire through the tunnel to run the new gauge. Took about 45 min to install including pass seat removal.

[PcarPhil]

This help is amazing. More details coming up....

-Kaefer

P.S. jpnovak I've read almost all of your posts on your ST project. Thanks for all the pics and info! I'm sorry I missed you in Va.

[randywebb]

I'd swap to the light wt., high torque Tilton type starter at this time.

The speedo thing is an issue if you go with a new trans.

Some cars with tranny's past a certain year will need to be hammered on.

The tach on a '73.5 will run fine off the MSD box on my engine. Earlier cars may have problems.

Many of the issues above are addressed in various threads. Youmight want to use Chuckw's post as an outline, add the other things here to it and then do a series of searches to build a list of what you need to do for your year. Paste the threads you find into it and then repost to help others.

People here can answer almost any question you have. Right now, the thing is to figure out what has been answered for your year before and what hasn't.

Good luck.

[jtf914]

If the 3.2 you are using was mounted to a G50, you will need to use the mounting studs off your original engine. The case for the G50 is thicker and the studs will be too long to mount the 915.

-Justin