porsche 901 gearbox with pullclutch vs vw type 4 possible?

[elgh33]

is this possible i cant find any info. and sourcing an pushclutch gearbox is not an option

can it be converted or is there any other flywheels i can buy to run the pullclutch?

[2.7RS]

No comprende

[GH85Carrera]

Tell us just what you are trying to do. What is the application?

[stownsen914]

Perhaps you are asking if the 70-71 push style clutch from the 911/901 trans can be used with a VW?

If so ... Porsche never mated that to a VW to my knowledge. The trick would be getting a flywheel to work with that setup. The flywheel would look like a 70-85 911 flywheel but with a VW mounting hub. Kennedy might be able to help?

But it might be easier to figure out how to use the 914/earlier 911 style 215mm clutch and figure out how to make the clutch cable arrangement work. 914s had a pulley on the trans, for example.

[SWS911]

69 was the last year to use a pull clutch and used the same spline on the output shaft that a VW transaxle used. Should work on a type IV engine with the stock flywheel clutch set-up.
The 914 used a version of the 901 transaxle, so I would check out the part numbers for the PP, clutch and TO bearing.

[Trackrash]

Originally Posted by SWS911

69 was the last year to use a pull clutch and used the same spline on the output shaft that a VW transaxle used. Should work on a type IV engine with the stock flywheel clutch set-up.
The 914 used a version of the 901 transaxle, so I would check out the part numbers for the PP, clutch and TO bearing.

The '70 and '71 911 transmissions also had the VW spline on the input shaft if that matters.

I imagine Kennedy Engineering or Patrick motorsports may have a custom flywheel and pp assembly that will mate most combinations.

[john walker's workshop]

69 used a PUSH clutch. Not enough meat in the 70/71 bellhousing to mount a early pivot ball in the proper position, which is different than a 70/71.

[elgh33]

Originally Posted by GH85Carrera

Tell us just what you are trying to do. What is the application?

my 69 911T 2.0 engine lost power and one cylinder died i need to rebuild but want something to run, while i tear the engine down

[GaryR]

Originally Posted by elgh33

my 69 911T 2.0 engine lost power and one cylinder died i need to rebuild but want something to run, while i tear the engine down

I'm lost. Are you saying you want to try and install a VW engine\transaxle? You really need to clarify if you want any sort of intelligent response..

[elgh33]

Originally Posted by GaryR

I'm lost. Are you saying you want to try and install a VW engine\transaxle? You really need to clarify if you want any sort of intelligent response..

Yes i want to put an vw engine in my porsche so i can drive it in the meentime i rebuilt the engine this winter..

I want an type 4 on the 901 gearbox, engine fits but cant solve the clutch

[SCadaddle]

I've got a 69 912. Years ago one cylinder of the engine ingested the fuel enrichment nozzle from one of the carbs. Engine came out and torn down. In the meantime, my dear friend the 356/912 guru decided he'd like to buy my car. Instead of rebuilding the 912 engine, he installed a 70 or 71 911 4 speed transmission to replace the 5 speed 901 transmission, and installed a VW Type 4 engine. I've since reacquired the car with this set up but it is distant to me so I couldn't tell you what is what at the moment. But that was one resolution of putting a type 4 engine in a car that had a 901 transmission.

My Type 4 engine is a later 2.0 liter variant with a single center mount carb system. It moves the car down the road but wouldn't spin a wheel from a standing start on a month old dead banana.

[lrodri64]

Contact Kennedy Engineering,
They have the flywheel that you need.
Either for VW type 1 or 4

[Daves911L]

Originally Posted by elgh33

my 69 911T 2.0 engine lost power and one cylinder died i need to rebuild but want something to run, while i tear the engine down

'69 T is a "push" clutch, identical to 914. So you should be able to bolt up a type 4 motor/flywheel directly to your '69 transmission housing and have the clutch work. I'm assuming all type 4's use the same flywheel as a 914, but maybe yours is from something else (bus?) and has a different flywheel? If that were the case, 914 flywheels are cheap and easy to come by.

It wouldn't work with a '70/71 transmission, as others have noted.

[stownsen914]

A 914 flywheel will get you what you need, they had the exact setup you are looking for (pre-70 911 clutch + 901 trans).

Careful to get the right flywheel though, needs to be 914 not just any type 4 that takes a 215mm clutch. I understand the VW type 4 flywheel has a different offset than the 914 one, and won't fit a Porsche gearbox.

[SCadaddle]

Here's a chart of the transmission numbers. I'm pretty sure the 4 speed box that was retrofitted to my 69 912 was a 911/00 4 speed from 1970 because I remember thinking "wow that's a pretty rare bird by the production numbers (only 690 total?)". I'll see if I can dig up some photos.


http://forums.pelicanparts.com/porsche-911-technical-forum/63523-901-13-gear-question.html See post #5 by Early S Man.

[strictly]

Hi just to say, incidentally Im planning the fitting of a

• 1969 902 trans
• 1978 VW 2.0 type 4 engine

Into a 1979 911SC also while I work (and take my time) on the 911 engine.

To make it work, you need a

• 914 flywheel (must be 914, and you may also need the bearing in the centre of the flywheel)
• early 911/912/ clutch (disc and pressure plate). I think the 914 clutch/pressure plate would be identical but not sure.

and for me I have an SC

• 1969 clutch cable and clutch cable related
• swap to mechanical speedo
• 901/902 shift rod
• 901/902 gearlever (only a maybe) I have not yet tried
• modified tinware, exhaust etc
• I have modified the driveshafts, which I have done using jeep chrokee prop shaft CV. This has the same spline as an SC driveshaft, and a bolt pattern of 108mm to match the 902, but has needed modification to the actual CV. I started but have not yet finished. Since doing I have since bought the early 911 half shaft hubs and 108mm driveshafts, so I now have two options when I put it all together to see what works best.
  

.

All of that said I only did a trial fit with the 902 transmission and a type 1 1600 engine which I borrowed off a freind. It fitted up and while I made it run, I ignored the clutch and driveshafts at the time.

I have yet to put it all together with the full set up based on the type 4 as I have since decided that the body is more important! I will come back to the 902/VW when I finish the body so I can drive the car while I work on the 911 engine. Realistically that may be a while.

[Tremelune]

This is a bit silly. Just buy another 2.0/2.2/2.4 engine, run it, then sell it for what you paid for it after the rebuild.

Or, buy a 3.0/3.2 in good shape and put your 2.0 under a bench, because it's more expensive to rebuild properly than a newer engine costs outright...

[strictly]

Originally Posted by Tremelune

This is a bit silly. Just buy another 2.0/2.2/2.4 engine, run it, then sell it for what you paid for it after the rebuild.

Or, buy a 3.0/3.2 in good shape and put your 2.0 under a bench, because it's more expensive to rebuild properly than a newer engine costs outright...

Its a good point! in the UK, Used complete engines were £3000 - £3500, but they were mostly shot (snapped head studs, etc) are getting much harder to find.....

I agree though In fact my preferred route for ME would be a spare 3.0 SC engine, as I want to experiment on EFI/ITB and be great to set that up on an "old engine" rather than a freshly rebuilt engine and have problems with breakin, by too much tuning while getting it to run.

So for sure I have 1 eye on the ground for a spare engine, but as I have a 902/14 trans sitting around from another project, and only shelled out £350 for a complete VW Type 4 engine also it makes for a conversion less than £600 - 800.

For sure and myself included, no one really wants a 4 cylinder in a 911, but at the very least is saves some money on gas which I can put towards EFI/ITB/motor rebuild. A US gallon (3.8 L) in the UK is $8 a gallon(!), and that is not even the really good stuff! In the UK our "gallons" are 4.54 L