Lotus Esprit:

Gear box

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# 1  4/3/2011 12:27 AM

New member
Registered: 4/3/2011
Posts: 1

Gear box

Hello I am looking for a "Ring and Pinion for my 1988 Lotus Esprit It has a Citreon MK1 gearbox. Also will a Renault gear box mate up to my 1988 2.2 Liter turbo? Thanks for any help, Larry



# 2  4/3/2011 3:49 AM

Registered: 11/24/2009
Posts: 1305

Re: Gear box

I found this information on a website for lotus at www.lotusespritturbo.com.

I hope it helps you out.

As of the ring and pinion, check out this website or others like it to see if you can locate the parts or try Ebay.

The Lotus Esprit X180 featured a Renault UN1-16 gearbox. The Citroen unit, used in the older Giugiaro Esprit S3 was replaced to safeguard future supplies of gearboxes, for increased Esprit production. The Renault unit was used in the Renault 25 and the Alpine GTA, but with the combination of ratios slightly altered for Lotus requirements. It is a fairly conventional two-shaft unit; the clutch drives the top shaft, which passes above the differential, with drive then traveling through one of five pairs of gears, or the reverse gear train, to exist forwards, via the bottom shaft, into the differential.
All five forward gears have synchromesh engagement. The gear lever is linked to the transaxle via two push-pull cables, attached to selector shafts within the transaxle. Fore and aft lever movements make each cable move in the same direction, transverse movements in opposing directions. Thus, each lever position gives a unique position of the cables relative to each other and to the transaxle casing, which enables the selector shafts to engage the gears.
To spread the costs of Federal re-certification, the first year's production of the US specification Esprit retained earlier, 9kg heavier 5 speed Citroen transmission. This had a lower torque capacity, insufficient to cope with the power of the 1989 model year US Lotus Esprit, so all cars had to Renault transaxle. It drives through a 235mm (9.25 inch) single plate diaphragm-spring clutch, hydraulically operated.

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