3.2SS engine into a 69 911

[74USCarrera]

Looking for a little help to ensure I am prepared.

I have a 69E and looking to swap the engine with a 3.0L which has been built into a 3.2 short stroke, with 46 webers and twin plug setup.

My question is what is involved with swapping this engine in and removing the 2.0? Is it difficult? Does it require any structural changes to the chassis? Electrical changes?

Just trying to figure out if this is a relatively simple process or whether more specialized work is required, as working on a budget and figured that the knowledge on this forum could assist me in avoiding any nasty surprises!!

Also, would it be better to replace the 901 trans with a 915 to handle the increased power. If so, does that require structural changes to the chassis?

Thanks for any help members may be able to provide.

As always, I appreciate the advice and guidance from those with far more knowledge than me.

[Thomas Owen]

Yes, it would be better to replace the 901 with the 915. Porsche changed transmissions in the 911 in '72 with the introduction of the 2.4 ltr. and you are well past that.

good luck -

[MJHanna]

Are you planning on running a front oil cooler with a thermostat? You will need it. Because you are running carbs your electrical connection are very basic. Not sure if you plan to run the MFI fuel pump you will need a fuel regulator PMO makes a simple good regulator, you will not need the harness that goes in the first connection (left side), see photo.

[74USCarrera]

Thanks MJHanna.

The car currently has a 2.0 with 40 Webers, so replacing with a 3.2 ss with 46 Webers.

There is currently an oil cooler in front passenger fender and holes drilled in the front bumper to aid airflow to it.

Will that suffice?

Does the fact that I am taking out a carb'd engine and replacing with a carb'd engine make things simpler then?

Appreciate any insight. I am trying to get a handle on amount of work to perform this swap and not end up in electrical issue hell, stopping me from actually enjoying all this additional horsepower!!

[Trackrash]

You will need to also address the clutch, electrical, ignition, gauges, and oil lines.

There have been numerous threads on this swap, if you search.

[regency]

I'd call Tom Amon ( 408-429-0545 ), He's in your neighborhood and will know exactly what to do.

1973 911 T MFI Coupe, Aubergine

Steve

[tcar]

Think through the decrease in value of the car putting a non-stock engine/trans in it.

[surflvr911sc]

Think through how much damn fun it will be with a 3.2SS in it!

[74USCarrera]

tcar, I have had the original car dyno'd (videos and dyno sheets...all 149hp of the original one!!). It will now be prepared for storage, alongside the original 901 trans.

The 3.2ss will go in along with a 915.

Do you think the value will be somehow lower to have a 3.2ss and 915 in the car, along with the factory original engine and trans in perfect condition on a pallet beside it?

Interested to hear if I am missing something here, as one of the main reasons for the replacement is not just more power (although I think that will be pleasant), but to ensure the original engine and trans stay perfect and not suffer a failure, that could dramatically reduce the value of the car.

[74USCarrera]

Ryan, I would have to agree. Not sure how much hp the 3.2ss will put out, but it should be quite a bit higher than the 149 that I was getting from the original...

[daleflesburg]

He will get at least a 60 HP gain and an entirely different torque curve. He will have a ball with it, and with the original (should have been a 2.2L??) could be worth more that an original car.

[Trackrash]

Value, it seems, is a function of condition, originality, condition, model, condition, options, year, mileage, unique history and documentation.
Original low mileage, concourse condition older cars will bring the highest prices. After that it's a big question.

[MJHanna]

Originally Posted by 74USCarrera

tcar, I have had the original car dyno'd (videos and dyno sheets...all 149hp of the original one!!). It will now be prepared for storage, alongside the original 901 trans.

The 3.2ss will go in along with a 915.

Do you think the value will be somehow lower to have a 3.2ss and 915 in the car, along with the factory original engine and trans in perfect condition on a pallet beside it?

Interested to hear if I am missing something here, as one of the main reasons for the replacement is not just more power (although I think that will be pleasant), but to ensure the original engine and trans stay perfect and not suffer a failure, that could dramatically reduce the value of the car.

No your doing the right thing keeping the original engine and trans if you decide to sell you can put them back in.

Are the oil lines through the body? or are they showing on the outside of passenger side of the car? I don't know if the E had a factory front oil cooler. If the oil lines go through the body then they are factory. If so you will need to run new lines on the out side of the car, (the originals are smaller than what you should run to a front oil cooler for the size of the 3.4 engine) If it has a front oil cooler you should pull it and replace it with either a Carrera or an elephant frt cooler. Why you ask? 69 front oil coolers are a 1-2 year only cooler , the last one I saw for sale the asking price was around 5 k and that was a year or two ago. Put the stuff that you cannot replace reasonably for when you or someone else puts it back to original.

[LakeCleElum]

60 HP increase is right on the money. I put this engine in my 73.5 and it was Dyno'ed at 209 RWHP:

Recently removed upgraded '81 SC engine and transmission from my '81 SC after car was damaged in front, causing parting out the car. Upgrades include 1) Max Moritz 3.2 liter pistons and cylinders, 2) 964 cams, 3) Raceware hardware, balanced rods, Carrera oil pump. New parts included: intake valve sleeves, rod bearings and rods balanced, and rocker arms. Transmission clutch disk, pilot bearing and fork were replaced. All of the above was performed in 2004 at 120,000 miles approx. and now at 132,000 miles.

I kept my 2.4 on a pallet to go with the the car someday. This was much cheaper than rebuilding the 2.4; even doing the work myself. I added a trombone cooler which does a fine job of keeping temps in check. Couldn't be happier....

[74USCarrera]

MJHanna, oil lines go down passenger-side of car and are clearly from

[74USCarrera]

MJHanna, oil lines go down passenger-side of car and are clearly from a previous upgrade. Also, it has an oil cooler that is not a trombone type. Tried to find some pics to show both....

[MJHanna]

your good to go with the oil cooler it can all stay in place to be used with the 3.2. More $$$ saved for other items

Mark

[74USCarrera]

Good, because having found a really good shop to do all this, I am dreaming up new things to make the car even better. LSD, Rennshifter, etc.... There seems to be an endless list of things I want and have seen on other cars over the last few years and now my car is apart and it seems logical to try and do them now....