Automotive American – Classic Vintage & Modern
Tag: Gearbox Conversion
Managed to purchase an overhauled 1934 V8 synchromesh gearbox which will be fitted into the Sport Coupe in due course.
Very well packed and looks to survived the journey very well.
Also recently secured a V8 Gearbox to Model A engine adaptor
Now have a few more parts to gather
A number of the parts needed are shown surrounding the adaptor in the picture above. Also the clutch will be replaced and likely the flywheel lightened
More to follow
Took the Model B gearbox over to my friend John to give it a look over, not surprisingly we found very little wrong with the exception of some damaged threads where the gearbox top mounts
The Model B into Model A conversion is rarely done and is quite complex meaning quite a bit of research and parts gathering will be required. John has kindly started to gather some of the parts as you can see below.
An adaptor plate to secure the Model B gearbox to the Model A engine, tailshaft/torque tube adaptor and sheet metal to modify the Model A sump have already been sourced by John. A number of other challenges such as mounting the handbrake, swapping the release arm to LHD, pedal box and radius arm modifications and Flywheel machining just to name a few! A gear lever for the Model B gearbox is on the way.
My friend John Cochran put me in touch with a very nice chap in Scotland named Ian Caldwell who happened to have a Model B gearbox for sale. The Model B gearbox offers the advantage of synchromesh over the Model A by removing the need to double declutch.
Wikipedia description
In a synchromesh gearbox, to correctly match the speed of the gear to that of the shaft as the gear is engaged the collar initially applies a force to a cone-shaped brass clutch attached to the gear, which brings the speeds to match prior to the collar locking into place.
Now I still need to gather quite a lot of extra parts to effect the conversion, these include a clutch pedal, shift lever. I’ll post the progress!
