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Old May 10th, 2013, 01:45 AM
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1967 Series IIA 109 NADA
Join Date: May 2013
Location: Santa Barbara
Posts: 10
Overdrive for Late 60's Series IIA

I'm thinking about purchasing a Series IIA from a friend on the west coast. However, it does not have overdrive and will of course have a few issues getting to a higher speed for highways (though I have no plans to speed around on the 101). Does anyone have any advice or experience on installing the overdrive? How much do the parts cost, and where could I find them? Any suggestions as to what I would be getting into? The engine is the 2.6L.
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Old May 10th, 2013, 01:56 AM
smenzel's Avatar
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1967 Series IIA
Join Date: Jun 2004
Location: Seattle, WA
Posts: 330
I'm not sure if they're still in business but I purchased a Wise Owl overdrive for my previous Series-IIA. Worked great for the couple of years I drove it. Sorry, but I don't recall the cost but it was fairly straightforward to install.

You might also check the wheels. 16" wheels will give you better road speed than the earlier 15".
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Old May 10th, 2013, 07:38 AM
revtor's Avatar
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Steve Maietta
1969 IIA 88" Bugeye
Join Date: Sep 2006
Location: Northern NJ, USA
Posts: 817
edit: whoops I'm thinking series.. were faireys around and kicking in 90/110's / Defenders? not sure.

Fairey od's are available all over, used. The rebuild parts are available.. They hold small amount of oil and leak, and so many of them develop a loud whine hence the need to rebuild. 4-800$$

Global Roamer makes the Roamerdrive. Brand new parts, new(er) design, holds more oil, shares it with the transfer case so they don't have the lubrication issues of the Fairey. Perhaps not as well long term tested, but all reports I've found are good. $1500

Install is bolt on, with some sheetmetal cutting to mount the shifter handle
"Yeah, make sure its a flatbed...."
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Old May 10th, 2013, 08:16 AM
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Bill Adams
66 109 sw 94 lwb
Join Date: Jul 2009
Location: kensington md
Posts: 6,505
Or put some RRC thirds in that have the higher 3.54 ring and pinion. You can usually get them for peanuts and the effect is similar, 'cept you can never get out of "overdrive".
I know some will jump all over me for suggesting this, but if you are doing mostly street driving, I think it's a good option. There will be occasions when the engine will run out of wheeze on hills, but that's part of the Rover experience. Heck, if you don't like it you can always put on an overdrive.
Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
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Old May 10th, 2013, 10:35 AM
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John Crouse
'93 NAS D110 (#8) / '61 Series II
Join Date: Feb 2007
Location: Denver, CO
Posts: 1,116
Fairey Overdrive is cheap, pretty bulletproof and easy to install.
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