901 trans. code

[1303C2/3]

Hello

I found two 911 transmissions with the number 901.301.301.1R. and the second one with the number 915.301.301.6R on it. I know the 901 trans. is the early one and its weaker comp to the 915. I don't know how to identify wheather its a 5 speed or 4 speed one (as found on some 912 models). What gear ratios does the 901.....1R have? And how can I be sure about the condition of the trans. before actually buying it. The output flanges I measured for the CV's have 110 mm outer diameter and the bolt pattern is appr. 97 mm's (both the 901 and 915). Which VW CV joint should I use? Type 2 or type1? From what I understand the 215 mm type 4 Volkswagen Bus clutch and pressure plate s a bolt on to the 901 trans.
Do I have to reverse the throwout arm (can it be done) on the 901 cluch mechanism in order to mate it to the VW cluch cable? Which throwout bearing (Porsche or VW) is to be used?
I've read the Porsche trans. into Bug article in a VW Speed issue (was the 2004/11 issue I guess) and the installation seems to be quite straightforward with the Bug@5-peed parts.
The asking price for the transmissions is 800 USD each, but as the 901 conv. seems easier then the 915 conv. I'm more inclined towards buying the 901 one. (The 915 needs the original and expensive 911 cluch and press. plate if I remember right?) Thats too many questions asked I know. But since this is the only option to get a 911 5 speed trans. for me, I would be very happy if someone could help me out on this subject.

Greetings.

[Bugat5speed]

Hi 1303 C2/3,

could have contacted me directly, no problem with questions.

The described 901 gearbox is one of the latest types, cause it has the pulled clutch system. The number that you gave is not correct. The correct number is underneatht the gearbox (the one you gave is the nose cone´s number).

It depends on which engine you would like to install, what gearbox you take. The 901 has short ratios and stands up to 270/280 Nm (only have the German torque measurements). The ratio of the gears are (from 1st to 5th):
3,091; 1,888; 1,318; 0,961; 0,793.
The 914 gearbox is nearly the same but has much longer ratios (4th and 5th):
0,925; 0,709. With tyres of 225/50/15 it makes a difference of 20 km/h in the fifth gear.
The 901 is ok for engines with high revs, but not for torque strong big engines.

The 915 is really a beast. It has long ratios and stands up to 350 Nm torque. We only take it for turbo-powered engines (f.e. Subaru Turbo).

The axle flanges can be changed to ones with smaller diameter (have them for both gearboxes). Have the conversion parts for 915 also.

The 901 clutch lever can be changed to one for a pushed clutch. The 915 can be changed to pushed clutch also.

If you have more questions, or if you like to order something (-:, please contact me info@bugat5speed.de

Cheers Martin

[LOAF]

Hey Martin nice site..

Bablefish became my best friend.. seems like you have some nifty parts..

Can you go into further detail, in another tread? Not sure what the protocol would be.. but curious as to your solution for putting a 901 911 into a bug..

Seems like you address the transverse front mount, shifter, shifter tube and clutch.. but it was a little difficult with the translation..

Do you have an english version of the site

PS Nice parts
Alex

[Bugat5speed]

Hi LOAF,

sorry no English site yet. For the 901/914 conversion it´s a nose cone (30 mm shorter than the original one, the front traverse, axle flanges (for beetle cvs and also for Porsche 944/Bus cvs), clutch cable mount plate, clutch cable connector, adjusted clutch lever, 5-speed-shifter.

For the 915-conversion it is a short nose cone (20 mm shorter), axle flanges with Porsche 944/Bus diameter, and a front aluminium cast traverse too.

Am preparing a rear traverse at the moment that fits the bellhousing of the Porsche gearboxes (is different to Beetle bellhousings).

Already made an own thread in the past, but it seems that nobody really wants to drive 5-speed in the US. Here in Europe it´s quite an important technical improvement and there are lots of interested people.

I always say that it is better to drive such a gearbox from a well known sportscar manufacturer, than installing such a hobby solution like some companies offer (making 5-speed out of a Beetle gearbox). The Beetle gearbox always stays a Beetle gearbox and does not stand that, what lots of people wish, that it would do.

If you have further questions please contact me directly, as it always seems to be an advert conversation.

Cheers Martin

[LOAF]

Martin,

I will look for that older thread..

Probably the initial reluctance was from the piecing together of all the parts.. One stop solutions that work are probably more receptive.. also cost.. but fear not there are plenty of folks starting to get on the wagon...

I will talk off line.. as I have some more questions, that may not be completely appropriate, with out turning this into a sales pitch..

If you have any pictures of the tranny's in beetles that would be nice..

Alex

[LOAF]

Bug@5speed..

PM sent with some questions, that hopefully you can clear up for me..

Thanks
Alex

[LOAF]

Martin, and all

Finally made it to Kinko's and have 2.4 Meg PDF file of the scanned article from Ultra..

Can one of the moderators or someone host this as a tech article.. would be helpful to showcase the conversion parts and how to..

Please PM me or email me if your intersted in the article in the mean time..

Thanks
Alex

PS Martin I will email you a copy tomorrow for future reference.

[Bugat5speed]

EvilOval:
your goods are on the way since last Friday. Hopefully with you by the end of the week.

LOAF:
Thank you for the PDFs of the report. I will add them to my site as soon as I make the English version.

GS guy:
think there is still an answer open about the dimensions of the sump. I will check it for you the next days and give you an answer.

as a current update for all of you (especially for 70Ghia):

my new shifter for Porsche and for Bugs with already installed Porsche-shifters is coming forward well. I have the first housing back from milling and will be able to mount it the next days. As soon as I have first pictures of it I will have them on my site (see under Projekte).

Will have new nose cones by next week again, traverses and oilsumps before Christmas, rest in stock.

Cheers Martin

[LOAF]

Martin, will the shifter include the shifter rod assembly?

Glad the file helped.. I will contact you very soon..
Alex

[Bugat5speed]

Hi LOAF,

there is no shift rod with the shifter if you mean that. But the bushing for the shift rod and where it is mounted in is a part of the shifter. So you get it as you see it on my site. In addition you need the connector to the gearbox from Porsche. It costs 40 Euro as a new part. Can give you the product code, if you want to order one from Porsche.

Hope to have answered your qestion. Do sometimes have problems with understanding, although I do understand most things in English

Cheers Martin

[Bugat5speed]

Hi EvilOval,

have the goods arrived in the meantime? Haven´t heard anything from you the last weeks. Please give me a feedback. Can do it by mail also.

Cheers martin