Thread: Gearbox Mainshaft Wear

Garry use Penrite 75 , valvoline Dura gear 75/85 or similar in the 5 speed and Penrite 10/teeths synth in the trans fer box comes in 2.5L bottle and the box take 2.3 so you have some.

Thanks Shaunp will give them a try - as I said I still have the ATF in the gearbox and the transfer case, swivel pin housings and diffs have Castrol VMX 80 in them.

Gazz

I reckon VMX 80 is a bit lite for diffs and swivels. I run Penrite 90/140 in the swivels and if you don't drive in water I'd put Castrol SAF-XA synth in the diffs, it's not cheap so you don't want to be changing it too often beause you got water in the diffs. SAF -XA was originally designed in conjuction with jaguar for use in their Lemans winning race cars and later used in the XJ220 supercar. It is factory fill for all HSV holdens and XR6 tubro and XR8 falcons. Castrol quote a life span or 300k km in Rockwell/Eaton diffs in road trains etc. It is rated at 90/140 but is quite thin. So if you put it in a Disco that doesn't go near creeks put it in and forget it just make sure it does leak out, but you should not need to change it.
VMX 80 is only rated at GL4 extreame pressure, diffs really want GL5 and VMX 80 will not be as shear stable at high temp either.

Thanks - I have been putting the specs contained in the workshop manual - since I have been using this discussion forum (4 weeks only) it hs become clear that some of the L/R specs are a bit dodgy - I should have realised 10 years ago after my Disco gearbox was rebuilt under warranty - I came back to the car after the stealer had supposedly finished the job and the was about 2 litres of ATF on the floor of the workshop - after abusing them for the leak - the gearbox had to be pulled down again to fix the leak - I accused them of putting the wrong oil in - at the time I really didn't believe them that a manual gearbox had ATF in it - but then they were the supposed experts - I went home and checked the books and sure enough it was ATF.

I have put a V8 Commodore Getrag 5 speed behind a Jag V12 I Have - it has ATF in it also - think I might change it to MTF as well.

My Freelander also has a GL4 spec for the transfer case - a GL5 spec might be better?

Thanks

gazz

Maybe ok in the free loader as it is kind of a transaxle. which normally run on GL4

Penrite web site says 10 tenths syngear75/90 for your freeloader as well.
I've done some 5 speed Supra boxes in XJSs and xj6s (and don't tell anyone but my E type has one to) a manual makes XJs a really sweet thing. My E type was the first of Jeff Delows Jag bellhouseing to go in a car. One of my old mates Ron helped Jeff with the design by suppling a jag all syncro bell housing for him to play with, Ron actually had a factory 4 speed XJS. Jef also makes a Tremec housing for Jags as well. Ron has sold over 1500 conversion kits around the world for jags, he makes flywheels, pedal , cross members etc. We put a Tremec in Dave's ser3 E type but then it's got a blowen 383cui injected Chev in it that gies 700hp+ at the wheels. If you know anyone who needs un breakable Jag diff stub axles come see me. Standard stubs are cast and hardened to 8 rockwell, we can supply ones CNC machined from hard billet and hardened to 35 rockwell, only ones in the world, short of the ones in the Walkinshaw XJS race cars as far as I know. You will tear the center out of the wheel before you break one.

Shaunp - well don't tell anyone but the V12 I talked about is also a series 3 e-type roadster - maybe we should start a Jag thread or better still a Jag forum but the moderators might get a bit upset. As the Getrag has an integrated bell housing I had a 10mm adapter plate made - the car has the box installed etc and has been driven about 50km (for testing purposes only off course) but the car is still being rebuilt - I would spend more time on it if I didn't have to fix Freaklanders and Discos.

20 years ago (I had the e-type then) I seriously considered putting a V12 in the front of my then 1950 Series 1 Landrover - I was putting a holden 161 in the L/R and I noticed the Jag engine was about the same length as the 161 - just twice the capacity - it would fit too - thankfully common sense prevailed - mainly brought on by the front drum brakes and the landys wild braking or lack of and the need to counteract the swerving under brakes that brought the project to an end before it started - even considered the jag rear end in the Landy- oh to be young again and dream up these foolish ideas.

A V12 series 1 landy with auto box, awd and 4wheel disc brakes - now there is an interesting thought!!

Originally posted by garrycol

20 years ago (I had the e-type then) I seriously considered putting a V12 in the front of my then 1950 Series 1 Landrover - I was putting a holden 161 in the L/R and I noticed the Jag engine was about the same length as the 161 - just twice the capacity - it would fit too - thankfully common sense prevailed - mainly brought on by the front drum brakes and the landys wild braking or lack of and the need to counteract the swerving under brakes that brought the project to an end before it started - even considered the jag rear end in the Landy- oh to be young again and dream up these foolish ideas.

Jeezzzz.... I thought it was bad enough taking one out with the 2.5 6cyl lump. :!: That was a nightmare to drive... Even emergency stops have to be planned in advance!!!!

Mark