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Identifying L series gearboxes, 3.9 or 3.7?
Posted: Mon Jan 12, 2009 9:44 pm
by tommo
I have a question about L series manual gearboxes. I was wondering if there's any way of telling what ratio they are from the outside? (assuming they haven't been tinkered with) Any markings? Particular models the 3.7s and 3.9s came on?
One way I've just thought of would be that the rear diff sometimes has a sticker on it saying what it is.
Also, in case you didn't see my wanted thread I'm looking for a 3.9 box to replace mine that these bits came out of yesterday...
Cheers,
tommo.
Posted: Tue Jan 13, 2009 12:06 am
by mattims
there was a match in your gearbox?? no wonder it broke..
jokes..
Posted: Tue Jan 13, 2009 3:18 pm
by CPOCSM
Groan!!!
Someone had to say it though - piss funny!!!
Posted: Tue Jan 13, 2009 4:53 pm
by Captain Obvious
pretty sure if you mark the crown wheel and then turn it and count the teeth you will work out what ratio it is, or it may be marked on the crown wheel.
bryan
Posted: Fri Jan 16, 2009 11:15 am
by r00fi
Take the oil drain plug out, mark a tooth with liquid paper and count teeth. From memory it's either 37 or 39
If you search the forums, there are a number of threads on the subject to confirm the numbers.
Posted: Mon Jan 19, 2009 2:27 pm
by Callum89
Is it possible to tell if a gearbox is a 3.7 or a 3.9 from the number of plines on the gearbox input shaft? My gearbox has 24 splines and the diameter is 24mm.
Posted: Mon Jan 19, 2009 3:08 pm
by AndrewT
Callum89 wrote:Is it possible to tell if a gearbox is a 3.7 or a 3.9 from the number of plines on the gearbox input shaft? My gearbox has 24 splines and the diameter is 24mm.
No, input shaft is the same regardless...
Posted: Mon Jan 19, 2009 3:33 pm
by Callum89
lol dam ok then.