installing t4 in a t1 bug.

[Passatman]

Good day all, I have recently bought a joe cali conversion manual from jake, interesting reading. But their is one thing that bothers me they say in the manual that a tall input shaft from the bus can work in the conversion without you putting the bearing from the crank shaft in the flywheel. If this is done can i run a 1800 ti engine with a tall input shaft. Sorry for the long post.

[dstar]

Yes, if you install a bus input shaft into a type I tranny,
you do not need ot do the conversion on the flywheel.

If I am wrong, you will know it soon..........


Don

[Rescue912]

Whoa, I need to get an updated manual. I have been through mine a few times and don't remember that tidbit of info. Nice to know...

[MASSIVE TYPE IV]

BUT if you do that you can never go back to a TI without hacking the end off the input shaft..

Also the input shaft used must be from a 68-72 002 Bus trans. The later ones won't work.

[Marc]

Yes, if you install a bus input shaft into a type I tranny,
you do not need ot do the conversion on the flywheel.

If I am wrong, you will know it soon..........


Don

There are two dimensions of concern on an input shaft. One is the distance from the inner end to the clutch spline area, and the other is the length of the "nose" that goes into the pilot bearing in the glandnut or crankshaft (or bushing in the flywheel if it's a IV converted to go with a Type I input shaft).
Both dimensions are "short" on a Type I input shaft.
On an IRS Type II shaft for a Type I engine, the nose is the same length as on the Type I shaft but the overall length of the shaft is greater, which makes sense if you consider that it has to traverse the space where the larger bus ring gear lives (`68-`71 US-market buses).
An IRS Type II shaft for a Type IV engine (`72-up) is the same length from inner end to clutch splines as the `68-`71, but the nose is longer.
I've never tried using a `68-`71 II shaft in a Type I trans, it would seem to me that the clutch splines and the machined surface for the input shaft seal would both be too far towards the engine...the overall length might be about right for a Type IV engine, but the nose might not be long enough to prevent the splined area from making contact with the engine. Maybe it works, but it sounds pretty funky to me.

[dstar]

Hey, I know it works, but like Jake said, once you install the shaft,
you have to run a type 4 with that tranny.

Course, I can't understand why anyone would want to run a
Type I after driving a Type 4 ANYWAY!


Don