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)
1982 MY touring wagon gearbox/diff
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steptoe
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MV Brumby was made up until 92 and then the latest ones got 94 compliance plates I hear. Only ever seen 3.7:1 diffs in these, I'd stick with 3.7 unless you thought you'd gain somethng in hill crawling with 3.9. Still 19 year old 4 speeds could be pretty hairy in these by now too.
If you not have patience for conversion, I hope you have patience for getting another 4 speed to find it is similarly worn. I have an old four speed DR in the shed that was sncking on down shift to third, needed a new slector oil seal annually and front seal started to dribble. I think I hang on to it for spares for when my curent 4 speed diff whine gets too much.
If you not have patience for conversion, I hope you have patience for getting another 4 speed to find it is similarly worn. I have an old four speed DR in the shed that was sncking on down shift to third, needed a new slector oil seal annually and front seal started to dribble. I think I hang on to it for spares for when my curent 4 speed diff whine gets too much.
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TheInterceptor
- Junior Member
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- Location: Dunsborough WA
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TheInterceptor
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- Joined: Sat Sep 25, 2010 9:57 pm
- Location: Dunsborough WA
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TOONGA
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any MY gearbox from 1982 -1992 will fit in your touring wagon.
there are 4 different clutches, 2 small ones 200mm, 21 spline and 24 spline and 2 bigger ones 225mm, 21 spline and 24 spline.
the L Series box will go in as well but you would need to look at this thread to get an idea of how much work is needed to get it to fit properly.
showthread.php?t=11821
there was a 3.9 dual range 4 speed box made but it was imported from Japan and hens teeth or rocking horse fecal matter are easier to come by.
TOONGA
there are 4 different clutches, 2 small ones 200mm, 21 spline and 24 spline and 2 bigger ones 225mm, 21 spline and 24 spline.
the L Series box will go in as well but you would need to look at this thread to get an idea of how much work is needed to get it to fit properly.
showthread.php?t=11821
there was a 3.9 dual range 4 speed box made but it was imported from Japan and hens teeth or rocking horse fecal matter are easier to come by.
TOONGA
