What is the Best synchronized Transmission Series 2a - Defender Source
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  #1  
Old May 11th, 2014, 11:33 PM
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What is the Best synchronized Transmission Series 2a

What is the Best synchronized Transmission replacement for my Series 2a?
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  #2  
Old May 11th, 2014, 11:35 PM
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Originally Posted by kullberg View Post
What is the Best synchronized Transmission replacement for my Series 2a?
I may be wrong, but I think your only option is a Series III trans (unless Ashcroft or someone makes a IIA synchro trans).
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  #3  
Old May 12th, 2014, 12:01 AM
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Series 2a Trany

Somebody said a LT77 with the short bell housing will fit, but I wonder if the 2a transfer case will bolt on? I found one e-bay with no transfer case.
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Old May 12th, 2014, 05:41 AM
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I'd suggest reading this:

http://www.ashcroft-transmissions.co.uk/the-series-vehicle/series-5-speed-kits.html
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  #5  
Old May 18th, 2014, 10:41 AM
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Quote:
Originally Posted by nathanwind View Post
I may be wrong, but I think your only option is a Series III trans (unless Ashcroft or someone makes a IIA synchro trans).
Yes but like the earlier gearboxes improvements were made over the years. The best of the SIII gearboxes are the ones that came behind the 2.5L engines in the 1980's. These were never sold in vehicles imported to the States.

If you want a five speed LT77 you need to be shopping at Ashcroft Transmissions.

The cheaper alternative is the SIII box and either a ROMERDRIVE or Heystee Automotive overdrive.
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  #6  
Old May 19th, 2014, 09:19 AM
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Quote:
Originally Posted by TeriAnn View Post
Yes but like the earlier gearboxes improvements were made over the years. The best of the SIII gearboxes are the ones that came behind the 2.5L engines in the 1980's. These were never sold in vehicles imported to the States.

If you want a five speed LT77 you need to be shopping at Ashcroft Transmissions.

The cheaper alternative is the SIII box and either a ROMERDRIVE or Heystee Automotive overdrive.
I just went through/going through a transmission debacle.

Overall, don't be cheap. Throw down the cash for a short bellhousing R380. Then get a disco 1.2 transfer case and part time it. Then suffer through all of the mods to make it work. If done correctly, this will be better and be just about as expensive (depending on labor) as doing a direct replacement. Also in the future if you decide to get a TDI, then its a bolt up.

I just got a new Suffix D transmission from England after messing around with locally rebuilt ones (not the fault of the shop, you just can't get decent replacement parts). PM me in 3 months and I'll tell you how it is.

The Roamer Overdrive has been very nice, though. Quiet (stupid transmission whines but, eh) and easy to shift. Just takes GL-4, which is kinda a pain to find and impossible to locate in a pinch. So always bring a quart.
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  #7  
Old May 19th, 2014, 09:52 AM
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Quote:
Originally Posted by LR Max View Post
I just went through/going through a transmission debacle.

Overall, don't be cheap. Throw down the cash for a short bellhousing R380. Then get a disco 1.2 transfer case and part time it. Then suffer through all of the mods to make it work. If done correctly, this will be better and be just about as expensive (depending on labor) as doing a direct replacement. Also in the future if you decide to get a TDI, then its a bolt up.

I just got a new Suffix D transmission from England after messing around with locally rebuilt ones (not the fault of the shop, you just can't get decent replacement parts). PM me in 3 months and I'll tell you how it is.

The Roamer Overdrive has been very nice, though. Quiet (stupid transmission whines but, eh) and easy to shift. Just takes GL-4, which is kinda a pain to find and impossible to locate in a pinch. So always bring a quart.
This. By the time you are done messing around you'll have spent what it costs (about 16-1800) to have a fresh new Ashcroft Stumpy on your doorstep.
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  #8  
Old May 19th, 2014, 10:13 AM
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My Math:

Baller Series 3 Suffix D Transmission from England (delivered): ~$1700
Roamer Drive (Delivered): ~$1700 (not that expensive on paper, but shipping and import adds to it)

Total without labor: $3400

Ashcroft Stumpy R380 delivered: ~$2,000 bucks
Disco 1.2 Transfer case: ~$100 bucks (my guess since they are plentiful)
Rework of driveshafts: ~$500

Total without Labor: ~$2600 bucks

So that leaves you $800 for the final modifications and misc whatever misery that shows up during the conversion. That is actually a pretty good amount of money for welding, body panels, etc.

Clutch cost is a wash. If you are pulling the trans, no reason not to put a fresh clutch in there. You get a 200 TDI clutch instead of a series clutch (if memory serves).

Labor minus modification will be similar.

I'm not saying the R380 is cheaper, but when its all done, it'll be a better setup.

Me, on the other hand, I'm still screwing around with my BS old crap.
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  #9  
Old July 28th, 2014, 09:27 PM
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Quote:
Originally Posted by LR Max View Post
PM me in 3 months and I'll tell you how it is.
Not quite 3 months, but hows it going?
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  #10  
Old July 28th, 2014, 10:19 PM
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Those I know with the Ashcroft conversion are very happy they made the switch.
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  #11  
Old July 28th, 2014, 11:49 PM
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SIII often won't fit directly ...

The all synchro SIII transmission/transfer case is typically not a direct replacement for the IIA. The reason for this is that the clutch slave cylinder assembly on the IIA is vertical, whereas, the slave on the SIII is horizontal. In most cases it WILL foul your transmission x-member unless you engage in some fettling. The engine to bell housing mounting is the same. You can, however, utilize the IIA bell housing and magnificent throw out bearing on the SIII gearbox. You will need to be mindful of alignment of the first motion shaft and properly set the preloads on re-assembly. TeriAnn and Bill are both correct in my experience. Reverse gear can be a problem on SIII boxes as can the synchro cones. Balance your options with cash on hand!
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  #12  
Old August 17th, 2014, 05:46 PM
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My wife has trouble with non-sychro gears so I ran the costs for the LT and stuby R380 conversion options for my '70 IIA. Since I'm not good at robbing banks, I went with a SIII/IIA hybrid from RDS. $2,300 shipped and drops right in. With stock 2.25L petrol, it seems to be the most cost effective option. When piggy bank fills up again will add OD.
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'99 UZJ 100 - for glamping and grocery getting
'94 FZJ80 - our Costa Rican coffee mule
'96 FZJ80 - 3XL, racked, shaved and dipped in Raptor coat
'70 Petrol SIIA 88 - a Costa Rican expat now with US citizenship!
'70 Petrol SIIA 88 - for Central America surf & coffee exploration
'56 Petrol S1 86 - a whole new kind of land rover hell...
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  #13  
Old August 29th, 2014, 12:22 PM
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Quote:
Originally Posted by REDrum View Post
Not quite 3 months, but hows it going?
Its a very nice transmission. I still have the whine in 4th gear (must be a factory option) but shifts smooth and overall works great. Also they sent me a transfer case as well. So I've got a rebuilt transfer case rolled in with the purchase

Drivetrain wise, I'm actually very happy with my truck. My engine FINALLY has good power. 1st gear with the Suffix B low range gears is pretty much too slow off road. Only use it for technical, still very nice to have. My only gripe is the shop that did the work put Amsoil in the transmission and transfer case. Yes, lets put $12/quart oil in a leaky truck. Oh well. I had 2 quarts on the shelf that I will use but sometime next year I'll drain and refill with the cheap stuff. Not a big issue, just me being a cheap @$$.

Couple this with rebuilt steering (very nice), rims that are straight and new radial tires (all very nice), and RM door tops, I am very happy with my 109 right now. This weekend I've got some maintenance a electrical work to do but beyond that, I'm going to start road tripping the truck again. Oh and fix the windshield wipers. BTW I recommend testing your wipers BEFORE you go driving through a storm. When you turn the knob and nothing happens, its a bad time.
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  #14  
Old November 2nd, 2014, 08:38 AM
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Sorry its been a while, got the S11a/III in and its a huge difference over the old. (Ok, yes, not a fair comparison its new and full synchro compared to clapped out non synchro) But make life in the cockpit of series truck a little less frantic first in line at red-light. More than meets my expectations for sycro box and, to me, well worth the extra 400 bux. Much smaller pattern too.
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'99 UZJ 100 - for glamping and grocery getting
'94 FZJ80 - our Costa Rican coffee mule
'96 FZJ80 - 3XL, racked, shaved and dipped in Raptor coat
'70 Petrol SIIA 88 - a Costa Rican expat now with US citizenship!
'70 Petrol SIIA 88 - for Central America surf & coffee exploration
'56 Petrol S1 86 - a whole new kind of land rover hell...
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