1982 MY touring wagon gearbox/diff
Posted: Wed Jan 26, 2011 2:28 pm
My 82 MY touring wagon was originally an auto but I converted it to a dual range, 4 speed manual 4WD about 8 years ago.
The box I put in was not exactly "perfect" when I got it from the local wreckers but it was OK.
It is a 3.7 ratio (sticker on the diff) but now the gox is getting a bit tired. It occasionally grinds when going up from 1st to 2nd or back from 3rd to 2nd and it is a hit or miss situation when trying to find 4th as sometimes it ends up trying to go into somewhere between 4th and reverse. There appears to be no major gear stick slop though there is a bit there.
I dont have the time, patience or need to go through an L series 5 speed conversion so I would be happy to go with another dual range 4 speed to bolt straight up to the EA81.
My questions are
- does the 3.7 ratio have advantages/disadvantages over the 3.9 (I think this is the other option) or should I go for another 3.7.
- What are the other EA81 gearbox ratio options. ?
- what EA81 4 speed dual range manual gearbox options are there for my 82 wagon as I was looking to find the latest model Brumby from a wreckers and grab its box and diff (if not 3.7)
I run 185/70/13 tires and everything else is standard apart from the 2" lift.
Any thoughts appreciated. I dont do any any beach running only bush driving if the opportunity arrises (there are no beaches in Muswellbrook NSW - about 150ks from Newcastle)
The box I put in was not exactly "perfect" when I got it from the local wreckers but it was OK.
It is a 3.7 ratio (sticker on the diff) but now the gox is getting a bit tired. It occasionally grinds when going up from 1st to 2nd or back from 3rd to 2nd and it is a hit or miss situation when trying to find 4th as sometimes it ends up trying to go into somewhere between 4th and reverse. There appears to be no major gear stick slop though there is a bit there.
I dont have the time, patience or need to go through an L series 5 speed conversion so I would be happy to go with another dual range 4 speed to bolt straight up to the EA81.
My questions are
- does the 3.7 ratio have advantages/disadvantages over the 3.9 (I think this is the other option) or should I go for another 3.7.
- What are the other EA81 gearbox ratio options. ?
- what EA81 4 speed dual range manual gearbox options are there for my 82 wagon as I was looking to find the latest model Brumby from a wreckers and grab its box and diff (if not 3.7)
I run 185/70/13 tires and everything else is standard apart from the 2" lift.
Any thoughts appreciated. I dont do any any beach running only bush driving if the opportunity arrises (there are no beaches in Muswellbrook NSW - about 150ks from Newcastle)