Reply With QuoteDrain/level/filler plugs are often BSP (British Standard Pipe) or NPT (National Pipe Thread).
I'll have to check the overdrive I have but from memory the sump plug had been overtightened so it might be fun getting it out.
Colin
Fossicker
What madness posessed Fairey Winches Ltd when they were designing the sump plug?
Someone measured it to be 9/16 x 12 UNC and I suppose M14 x 2 is close too, as is 9/16 BSW, but neither are a standard size.
The rest of the overdrive was designed with metric bearings, metric seals and metric studs and nuts. Ok so the gears are a mixture as they were using standard Rover P6 bits and mating to an imperial transfer box so I would expect this but generally they pandered to the new 'Mesures usuelles' when they designed it - so what happened to the sump and fill plugs?
Any designer would rationally think 'I will use standard sump plugs as they will be cheaper than manufacturing specials inhouse' - but aparently not.
I would use a standard size common to somewhere else on the vehicle like the engine sump plug.
Even if they stepped up the size to 5/8" UNC they could have used the Rover Mini sump plugs straight off the shelf without altering the alloy casting.
The only other thing I can think of is that it is a standard size for something.... but does anyone know what that something is?
ForumSage
SupporterDrain/level/filler plugs are often BSP (British Standard Pipe) or NPT (National Pipe Thread).
I'll have to check the overdrive I have but from memory the sump plug had been overtightened so it might be fun getting it out.
Colin
'56 Series 1 with homemade welder
'65 Series IIa Dormobile
'70 SIIa GS
'76 SIII 88" (Isuzu C240)
'81 SIII FFR
'95 Defender Tanami
Motorcycles :-
Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C, Suzuki SV650
Master
Probably designed by the same people that designed the rules that made distances in Britain in Miles and elevations in Metres. I was taught that you keep your measurements in one or the other, not both.
Fossicker
I'll remember that next time I put a 330ml can of coke into a pint glassOriginally Posted by blackbuttdisco
Lord Jock
It's "Designed and made in England"
Try a Series 3, they are "multicultural" with SAE, Whitworth and Metric!
Cheers, Mick.
1974 S3 88 Holden 186.
1971 S2A 88
1971 S2A 109 6 cyl. tray back.
1964 S2A 88 "Starfire Four" engine!
1972 S3 88 x 2
1959 S2 88 ARN 111-014
1959 S2 88 ARN 111-556
1988 Perentie 110 FFR ARN 48-728 steering now KLR PAS!
REMLR 88
1969 BSA Bantam B175
ChatterBox
It's British, and that's all. The Mini came out with a redundant WWI thread holding on the flywheel. My Range Rover has plenty of weird Acme threads holding the body together. I think that's why Aussie mechanics "hate Land-Rovers", because it makes them think!
At any given point in time, somewhere in the world someone is working on a Land-Rover.
Fossicker
Can anyone measure the size of the alloy dust cover ring on the gear lever for me please? The one with 3 screws.
My guess is 3" x 1.5" hole.
Many thanks.
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