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Does anybody have intimate knowledge of the NG series transaxles and could tell me if its possible to flip the r&p over to reverse the final drive?
There are several threads on various internets and the answer that inevitably come back is "use a Un1 box, it's much stronger"
Great advice if you have a lotus or GT40 replica but I only need to put 65-70hp through it and the UN1 box is too big.
So is it possible to reverse the drive of an NG renault transaxle?
Any help appreciated thanks.
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briang
Part of things
Posts: 82 
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Thanks, there's lots of good info in there.
Unfortunately not the info I'm after.
Lotus used the engine and transaxle in the same orientation as renault
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i take it a vw box is physically too big?
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paulw
Part of things
Posts: 217
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Lotus did reverse the drive (with a CWP change) for the early Europa, the 16 had the gearbox in front of the engine, and the Europa was mid-engined, with the engine in front of the box.
Then when Lotus went to a five-speed, they used the 365 box from 12/17 Gordini - the 12s and 17s had the engine in front of the gearbox.
But although many Europas have been modified to take the NG box, Lotus themselves didn't use the NG series gearboxes. I don't know if there are differences with the NG box that makes it harder to swap drive direction, I'm afraid.
Assuming that you need the gearbox in front of the engine, and have to have 5 speeds not 4, then ideally you would want the gearbox from a 16TX but your chances of finding one are very slim and it's likely to be expensive, because rich folk with Alpine 110s and 310s will want them. With only 65-70bhp the 5 speed from a 5 Gordini/Alpine would also work - again not exactly easy to find, but slightly less desirable.
I do have a friend who is a Renault specialist who once had lots of parts like this stashed away. He lost lots of them to a burglary by metal thieves, but I can ask what he's still got if you want?
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Lotus Seven
'58 Ford Special
64 Barracuda
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i take it a vw box is physically too big? I honestly don't know. Trying to get actual measurements over the internet is proving remarkably difficult. In-between the miss-informed and those just curious as to what you're up too I've so far only had one accurate measurement from about 15 requests across various fb groups and specialised forums. Even some thing as simple as a gearbox or flywheel dimension. As for the renault box I'm really just thinking out loud. |
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Lotus did reverse the drive (with a CWP change) for the early Europa, the 16 had the gearbox in front of the engine, and the Europa was mid-engined, with the engine in front of the box. Then when Lotus went to a five-speed, they used the 365 box from 12/17 Gordini - the 12s and 17s had the engine in front of the gearbox. But although many Europas have been modified to take the NG box, Lotus themselves didn't use the NG series gearboxes. I don't know if there are differences with the NG box that makes it harder to swap drive direction, I'm afraid. Assuming that you need the gearbox in front of the engine, and have to have 5 speeds not 4, then ideally you would want the gearbox from a 16TX but your chances of finding one are very slim and it's likely to be expensive, because rich folk with Alpine 110s and 310s will want them. With only 65-70bhp the 5 speed from a 5 Gordini/Alpine would also work - again not exactly easy to find, but slightly less desirable. I do have a friend who is a Renault specialist who once had lots of parts like this stashed away. He lost lots of them to a burglary by metal thieves, but I can ask what he's still got if you want? I believe that all of the Ng boxes are behind the engine in both the lotus conversions and their renault donors so as far as I can tell there is no need to even try it. The last thing I want to do is start chasing rare and sought-after parts, thats kind of what I'm trying to get away from. I just had a thought that as the UN1 is workable in either scenario then maybe it's little brother might as well. |
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