The Jensen Owners' Club A technical and discussion forum for all Jensen enthusiasts It is currently Thu Apr 09, 2020 1:53 pm

Parts Wanted

4 SPEED GEARBOX SYNCHRO HUB

by croberts » Mon Feb 17, 2020 6:13 pm

I am currently rebuilding my 4 speed gearbox and need to replace the fixed part of the 1st/2nd gear synchro hub (Jensen part no. 94623). Needs to be an undamaged used part or ideally NOS.
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by kees » Tue Feb 18, 2020 11:51 am

May be better to use this as a basis? Just transplant the input shaft.

https://www.ebay.co.uk/itm/Hillman-Hunt ... Sw1ZBbirxK

Gear ratio's may be slightly different but that would not harm as the J-H/Rootes Holbay ratio's are not ideal for the J-H anyway.
I do have a box with NOS J-H gearbox parts, but I am not sure there is a 1/2 synchro hub. I know there are NOS synchro rings, seals and NOS shafts and some other bits&pieces. I'll have a look.
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by croberts » Tue Feb 18, 2020 3:08 pm

Kees - Thank you for taking the trouble to find an alternative solution for me using a Hillman hunter gearbox, very interesting. For the moment I would prefer to continue with the rebuild of my existing 4 speed JH box as I have managed to source and order all of the replacement parts I need, except for the synchro hub. The reason that I am considering replacement is that I found some spalling on the hub face where it abuts the 1st gear assembly. I have attached an image to show more clearly. Perhaps this occurred due to the fact that both mainshaft nuts were only finger tight when I dismantled the box.
Here's hoping that you will find a synchro hub in your box of spare parts.
A7BA1C58-C97C-4136-86EA-39AB83AA7B8D.jpeg
A7BA1C58-C97C-4136-86EA-39AB83AA7B8D.jpeg (176.88 KiB) Viewed 1372 times
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by David Devine » Tue Feb 18, 2020 4:48 pm

Hi Chris

i have a few and will have a look tomorrow at there condition. But you could try this firm they import Hillman spares from Iran and I have seen gearbox cluster parts on their shelves. They built Hillman Hunters under licence in Iran.

Greenwood Automotive
19 Wadsworth Rd
Perivale
UB6 7LF
02034170432
David Devine
 
Posts: 1171
Joined: Mon Jan 02, 2006 2:22 pm
Location: Northolt Middx

by croberts » Tue Feb 18, 2020 5:14 pm

Thanks Dave,
Tried Greenwood but no luck. I think the JH gearbox has more splines than the Hillman Hunter from what I was told.
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by kees » Tue Feb 18, 2020 6:10 pm

croberts wrote:Thanks Dave,
Tried Greenwood but no luck. I think the JH gearbox has more splines than the Hillman Hunter from what I was told.


The splines on older Rootes car were less. On later Sunbeam Alpines and Hunters the splines are the same as on the J-H. The more powerful engined Sunbeams also used the same 8,5" clutch plate.
Kees Oudesluijs
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by croberts » Wed Feb 19, 2020 11:45 am

Kees
Thanks for the information. Just wondered if you would know if the Hillman Hunter gearbox on the link you posted would have the same synchro hub fitted as the Jensen Healey, so I could use it as a donor gearbox?
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by kees » Wed Feb 19, 2020 3:23 pm

I think I should have a Rootes parts manual so I may be able to check if the to hubs are the same.
It may take some time though so keep reminding me!!
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by David Devine » Thu Feb 20, 2020 4:29 pm

Unfortunately my hubs are not any better than yours.

IMG_20200220_103830.jpg
IMG_20200220_103830.jpg (137.37 KiB) Viewed 1268 times


The Arrow range of Rootes cars had the fine splines in the gearbox and the pre 66 cars have the course splines. I have a Sunbeam H120 overdrive box in my JH and used the JH 1st motion shaft in it.

Dave
David Devine
 
Posts: 1171
Joined: Mon Jan 02, 2006 2:22 pm
Location: Northolt Middx

by croberts » Thu Feb 20, 2020 5:03 pm

Dave-thanks for searching out your hubs and posting images. Perhaps the hub on the left is slightly better as it has bruises rather than spalling. Wish I could find a NOS part which I know would be o.k.
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by kees » Thu Feb 20, 2020 6:07 pm

You may try this eBay seller:

www.ebay.co.uk/itm/Gearbox-3rd-4th-Gear ... SwQodZbjQ2

He may have the parts you want.

Kees Oudesluijs
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by croberts » Fri Feb 21, 2020 10:29 am

Thanks again Kees, I could not see anything on their Ebay shop so have messaged them, did you manage to have a look through your stock of parts?
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

by kees » Fri Feb 21, 2020 10:49 am

croberts wrote:Thanks again Kees, I could not see anything on their Ebay shop so have messaged them, did you manage to have a look through your stock of parts?


I did but sadly no hubs, just the gears.
I still have to unearth my Rootes parts manual to compare the part numbers.
Kees Oudesluijs
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by kees » Wed Feb 26, 2020 3:43 pm

I have found the Rootes parts manual and as I thought ref. no. 32, 1/2 sleeve Jensen part no. 93121 (Rootes part no. 5221245) is identical to the one in the Rootes gearbox carrying the same part number. However ref. no. 32A is different. No 32 must be used with no 33 and not with 33A. No. 32A can be used with either no. 33 and 33A.
This is no problem as in the rebuild box you will find the matching parts.
Kees Oudesluijs
User avatar
kees
 
Posts: 2269
Joined: Sun Jun 25, 2006 9:35 pm
Location: Heerjansdam NL

by croberts » Thu Feb 27, 2020 12:34 pm

Thanks Kees. Very useful information.
User avatar
croberts
 
Posts: 38
Joined: Tue May 12, 2009 6:33 pm

Next

Return to Parts Wanted