Gearbox offset to NS incorrectly
Spacers:
-
- Senior Member
- Posts:940
- Joined:Fri Mar 19, 2004 3:50 pm
- Location:United Kingdom
Re: Gearbox offset to NS incorrectly
Just a small point, which might aid clarity when describing this situation - "asymetrical" means non-symetrical, ie the mounting is visibly lop-sided.
"Symetrical" means it can be fitted either way round.
"Symetrical" means it can be fitted either way round.
- Jonathan Lewis
- Senior Member
- Posts:1007
- Joined:Sun Feb 22, 2009 4:28 pm
- Location:Monmouthshire
Re: Gearbox offset to NS incorrectly
Just a thought, but is it possible that the o/d unit has originated from something other than a saloon? I seem to remember that some TR units at least have a different rear casing with the cast-in bracket at a different angle to accommodate the less offset mounting of the engine/transmission combination in the TR chassis. Not sure, however, whether that is just A-Type or also J-Type as well.
Ostensibly, having the gearbox mounted 'vertical' in a saloon shell rather than canted-over slightly to the o/s could cause the fouling issue you appear to have. Against that, the engine is still going to be inclined to the o/s, and presumably trying to twist the gearbox and o/d with it, so not sure of what the overall impact might be...
Ostensibly, having the gearbox mounted 'vertical' in a saloon shell rather than canted-over slightly to the o/s could cause the fouling issue you appear to have. Against that, the engine is still going to be inclined to the o/s, and presumably trying to twist the gearbox and o/d with it, so not sure of what the overall impact might be...
Re: Gearbox offset to NS incorrectly
See the bottom image from Joyofsix! I just must have always had J Types!
Charles Harrison
Register member 3095
Folkestone
Cherry Red Mk1 2000 Rally Car
Mallard Blue 2.5PI
Sapphire Blue GT6 Mk3
Vermillion Red Spitfire 1500
Pimento Red TR6
Inky Blue VW Passat B5.5
Arctic Blue Jaguar XJ40
Silver Range Rover Vogue SE
Register member 3095
Folkestone
Cherry Red Mk1 2000 Rally Car
Mallard Blue 2.5PI
Sapphire Blue GT6 Mk3
Vermillion Red Spitfire 1500
Pimento Red TR6
Inky Blue VW Passat B5.5
Arctic Blue Jaguar XJ40
Silver Range Rover Vogue SE
-
- Senior Member
- Posts:940
- Joined:Fri Mar 19, 2004 3:50 pm
- Location:United Kingdom
Re: Gearbox offset to NS incorrectly
I have had this problem once in a Volvo 240, when after a lengthy correspondence in which everybody insisted my setup was right so the gearbox "must be centralised", I gave up arguing and just drilled a new hole in the plate the mount bolted to, 1/2" to the left of the original. Problem solved!
Regardless of the explanation here, there are a variety of gearbox mounting options available, so I'd just pick 'n mix to move the height and/or tilt so that it comes right.
There are three lengths of spacer available - A-type (none), J-type (long), automatic (shorter). By fitting longer on one side and shorter on the other that would tilt the gearbox?
Is the adaptor plate handed or not? The Chris Witor photo clearly shows the two holes as being at different heights, so for a big change of gearbox angle you could reverse it. Or fit one of the non-handed kind that other responders seem to have?
Or experiment with different thicknesses of washer and then cut a pair of spacer tubes to suit?
Regardless of the explanation here, there are a variety of gearbox mounting options available, so I'd just pick 'n mix to move the height and/or tilt so that it comes right.
There are three lengths of spacer available - A-type (none), J-type (long), automatic (shorter). By fitting longer on one side and shorter on the other that would tilt the gearbox?
Is the adaptor plate handed or not? The Chris Witor photo clearly shows the two holes as being at different heights, so for a big change of gearbox angle you could reverse it. Or fit one of the non-handed kind that other responders seem to have?
Or experiment with different thicknesses of washer and then cut a pair of spacer tubes to suit?
Re: Gearbox offset to NS incorrectly
Good discussion this! When I bought my car, even although it is/was totally original,itdidn't stop "modern" garages fitting washers and no bushing between gearbox mount and floor.I bought a new mounting and bushes and all improved.
Just a point.,with the age of our cars,should the terminology not be Asy-imperial and Sy-imperial????????????? :lol:Just a small point, which might aid clarity when describing this situation - "asymetrical" means non-symetrical, ie the mounting is visibly lop-sided.
"Symetrical" means it can be fitted either way round.
Just a point.,with the age of our cars,should the terminology not be Asy-imperial and Sy-imperial????????????? :lol:Just a small point, which might aid clarity when describing this situation - "asymetrical" means non-symetrical, ie the mounting is visibly lop-sided.
"Symetrical" means it can be fitted either way round.
Bill Young
1967 MK1 2000 MSS8E
1971 minivan IUI1588
1981 minivan TDS40W Now PMY453W
1962Greeves Sports Tourer 24DC 114 GGD
1998 Honda CB750, Deep Candy Apple Red.13500 Miles R191DVR
2020 Renault Trafic crew van 12 Miles 02-11-2020 TDS40W
1967 MK1 2000 MSS8E
1971 minivan IUI1588
1981 minivan TDS40W Now PMY453W
1962Greeves Sports Tourer 24DC 114 GGD
1998 Honda CB750, Deep Candy Apple Red.13500 Miles R191DVR
2020 Renault Trafic crew van 12 Miles 02-11-2020 TDS40W
-
- Senior Member
- Posts:288
- Joined:Tue Nov 19, 2013 8:50 pm
Re: Gearbox offset to NS incorrectly
Think you kinda answered the problem, the later engine mount had different offset holes. Must have done it for a reason.
https://www.chriswitor.com/datasheets/ ... ptions.pdf
Re: Gearbox offset to NS incorrectly
Well, I did inadvertently throw a spanner in the works then describing the nos gearbox mountings as 'asymmetrical' when I should have quoting 'symetrical'! Apologies all!Clifford Pope wrote: ↑Mon Jan 27, 2020 8:21 amJust a small point, which might aid clarity when describing this situation - "asymetrical" means non-symetrical, ie the mounting is visibly lop-sided.
"Symetrical" means it can be fitted either way round.
Anyway just for clarity again - my new original gearbox mounts are the same dimensions on both sides and therefore can be fitted either way.
Sorry for the lack of correct grammar.....!
Register Member no. 1596
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
-
- Senior Member
- Posts:940
- Joined:Fri Mar 19, 2004 3:50 pm
- Location:United Kingdom
Re: Gearbox offset to NS incorrectly
Anyway, has the problem been solved?
Re: Gearbox offset to NS incorrectly
Thought I should give an update.
The spacers were incorrect.1.3" Auto, rather than the 1-9/16" J Type.
I made a rookie error. I measured them in situ, but did not take into account the height of the insulating top-hat bush. Although the gearstick is still over (but maybe correct), at least the rubber gaiter fits properly.
Thanks everyone for the advice.
ps speaking to Chris Witor, the mounts are symmetrical, although various picture suggest otherwise.
pps. When I bought my MkII PI saloon, the cross-member had been fitted the wrong way round by the DPO! This was glaringly obvious when I went underneath the car.
The spacers were incorrect.1.3" Auto, rather than the 1-9/16" J Type.
I made a rookie error. I measured them in situ, but did not take into account the height of the insulating top-hat bush. Although the gearstick is still over (but maybe correct), at least the rubber gaiter fits properly.
Thanks everyone for the advice.
ps speaking to Chris Witor, the mounts are symmetrical, although various picture suggest otherwise.
pps. When I bought my MkII PI saloon, the cross-member had been fitted the wrong way round by the DPO! This was glaringly obvious when I went underneath the car.
Richard
Compulsive PI'er Daughters have Heralds. Son-in-laws have 2.5's
Compulsive PI'er Daughters have Heralds. Son-in-laws have 2.5's
Who is online
Users browsing this forum: No registered users and 4 guests