1970 911/01 Gearbox

[onephat356]

I need help finding the correct pieces to mate this unusual gearbox up to a 1969T 2.0 engine.
I have been told due to the limited run on this gearbox I need a "special flywheel, clutch. pressure plate, clutch cable," and so on.
Thanks for the help.

[john walker's workshop]

70-77 flywheel, 70-86 pressure plate, 70-71 disc, 70-71 release fork, pivot bolt assembly and throwout bearing, and a 70-71 clutch cable and cable end fitting that hooks in the ear on the trans.

or just use all the 70-71 internals in a 69 case and use the 69 clutch and flywheel.

[onephat356]

John,
Thanks for the reply.
The gearbox I have is low mileage so I don't want to pop the internals out into another case.
Are the output flanges with the four through bolts (long), two bolts (short) special to this gearbox as well?
I have a later set of drive flanges (thanks Tony) to switch out so I can use the later axles with six long through bolts.
I was also told that I should upgrade the "simplified diff" and the input shaft.
What would be the reason for that?

[Grady Clay]

John has it right on.

One significant difference is the position of the clutch release arm pivot relative to the input shaft centerline. There is a significant difference between 2.0 ('69) and 2.2 ('70-'71).

The alternative John is proposing is using the smaller 215 mm clutch with the original ’69 transmission. The '70 and later was the larger 225 mm clutch.

Both John and I have written significantly on this subject. A Pelican search will find all that.

Best,
Grady

[Grady Clay]

John, Pelican onephat356,

A ’70-’71 type 911/01 is VERY difficult to fit in a SWB 911. I have done it on my own 911 (’68) but it is very complicated.

How about some more details?

The issues are:
Axle connection (big deal).
Clutch, another big deal
Clutch operation including at the pedal assembly.
and a few simpler issues.

There are better alternatives to a 911/01 with more favorable gearing.

Best,
Grady

[onephat356]

Grady,
There you are.
I tried to send you a PM but your box was full.
I got the 911/01 for a good deal from a friend so I thought why not put into my 68 roller.
If the end result is no different than putting a 901 or 902 in than I will start looking for a different unit.
I thought the box was kind of nifty due to the rarity now I see why.

[911quest]

Hey John how's the project going? Let me know if you want a 901 gearbox.

Tony

[onephat356]

Tony,
I will let you know.
I should of picked one up when my dad got the 69T engine from you.
I'll be in touch.

[Grady Clay]

John,

Let me see if I can find and build you a proper 901 for your car.

Wayne and I are collectin transmissions for my two chapters (901 & 915) in a book.

Please contact me.

Best,
Grady
gradyclay@hotmail.com

[onephat356]

Grady,
Look for an email tommorow.
Regards,
John