E-type gearbox EJ 15784

Hi, I have a 63 FHC with I rhink is a close ratio gearbox. Gearbox number EJ 15784.

Indications say it is from series 1,5. Is this correct?

Based on looking at information on xkedata.com, it seems that this is correct.

One, From your question it appears that you do not have a service manual and that is the one thing that every E-Type owner should have. The EJ gearboxes were the close ratio gearbox that was used on the early 4.2’s and if that is the gearbox in your car a PO changed it. He probably had the 3.8 bell housing machined to except the larger 4.2 front bearing and used the original flywheel and early starter which is the cheapest way to convert to the Jaguar all synromesh gearbox.

Hi, I have had an Haynes Owners Worshop Manual since 1977, first English book I ever bought. Many years I knew the E-type and technics only by English, not Norwegian.
Thanks for the feedback. Found out on web research that gearbox was manufactured 13.10.1966, I misled you or misred my gearbox number, it was EJ13784. Sorry about it. So no series 1,5 a standard series 1. How do one see if it was for an OTS or a FHC? It is fitted in a January 63 FHC.

The gearboxes for both FHC and OTS are the same. If you want to know which type of car it was originally fitted to for some odd reason, you would have to hope that the owner of the original car had listed it on XKE Data prior to it being removed from that car and finding its way to yours. But why would you want to know that?

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Hi,

Info eanted wanted Just a part of the history build up. JHT in UK will also be able to help.

Thanks for your feedback.

Best regards

Ove Andreassen

I have severe noise problems on EJ 13784 gearbox and some other issues.

Have found an earlier EJ gearbox with 6345 as its serial number.

For fun I counted the teeth on 1st, 2nd and 3rd gear sprockets, sitting on main shaft? and found that 1 and had identical numbers, 33 and 30, while 3rd had 26 in mine while spare box had 25.

Why is that?

Should not all EJ early close ratio gearbox have same rarios?

I recall @64etype having that data easily accessible.

Don’t know if my notes will be helpful, but my '63 has an early version of the all-synchro that someone installed into the car. Here are the notes:
Gearbox Notes

The transmission in my 887030 is EJ 6557. This is one of two types of all synchro gearboxes (early).
John Carey writes: Here are some notes I found in Dick Vandermeyden’s shop re: serial numbers on gearboxes…
Series1: 3.8 gearbox serial number prefixes are EB with either JS or CR suffix which is for std or close ratio gears

4.2 gearbox serial no. prefixes are KE (std) or KJ (close ratio). As of 1965 according to the research I (Dick) did is when the gearbox changed to a fully synchromesh version. Could be at the same time the motor was revised or not? The production changes on the E-type were not coordinated like you might expect. 4.2 2+2 gearbox serial no. prefix is EJS

Series 2: 4.2 gearbox is KE (std) or KJ (close ratio) are these are the fully synchronized boxes.

		                                         ***Gearbox KJS101 onwards (2+2)**

Gearbox EJ001 onwards: *Gearbox KE101 onwards KE101 (OTS, FHC)

1st 2.68:1 1st 2.933:1

2nd 1.74:1 2nd 1.905:1

3rd 1.27:1 3rd 1.389:1

4th 1.000:1 4th 1.000:1

  • Helix angle changed for quietness, fix to taper dog gear lock for jumping.

I apologize for not being able to make a table. There are supposed to be two columns. One under the EJ box and the second under both the KJS and KE boxes

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Something sorta like this - I also deleted the “second” gear notation under the KE101 column

Gearbox EJ001 onwards: *Gearbox KE101 onwards KE101 (OTS, FHC)

1st - - - - 2.68:1 / . / . / . / . / . / . / . / . / . / . / . 2.933:1

2nd - - - - 1.74:1 / . / . / . / . / . / . / . / . / . / . / . 1.905:1

3rd - - - - 1.27:1 / . / . / . / . / . / . / . / . / . / . / . 1.389:1

4th - - - - 1.000:1 / . / . / . / . / . / . / . / . / . / . / . 1.000:1

or

EJ001 & > KE101 (OTS, FHC)
1st 2.68:1 2.933:1
2nd 1.74:1 1.905:1
3rd 1.27:1 1.389:1
4th 1.00:1 1.00:1

That’s it, I like the 2nd version. :slight_smile:

Scot

The first version uses “.” and “/” to build the spacing in the chart. The forum software auto-deletes any repeated character after 3 or 4 iterations. By bouncing between “.” and “/” I over-rode that feature. Makes a more readable chart but the .'s and /'s are distracting.

The second version is a copy/paste of a coupla cells from ab eXcel Spreadsheet.

Craig

Discourse does allow tables to be presented, but it’s a bit of a pain.

Gearbox EJ001 onwards Gearbox KE101(OTS,FHC) onwards
1st 2.68:1 2.933:1
2nd 1.74:1 1.905:1
3rd 1.27:1 1.389:1
4th 1.00:1 1.00:1

See: Add a table to your post using markdown - users - Discourse Meta

Hi David

On an EJ gearbox, how many teeth should the first, second and third maindrives have or the sprockets sitting on the main shaft?

I have 33, 30 and 26. is that correct or is that for a MK 2 or something else in that period?

Ove

ons. 15. mar. 2023 kl. 11:08 skrev David Langley via Jag-lovers Forums <noreply@jag-lovers.com>: