Nissan 100 NX 1990 1995 User Manual

BUYERS GUIDE: Nissan 100NX
A sports car for the masses
Quirky open top motoring for peanuts
NISSAN 100NX: 1990 – 1995 WORDS: ANDREW JONES
The concept was simple; bring the sports car feel to the masses for very little development cost. Take an existing successful ‘shopping trolley’ model i.e. the Sunny; cloth it in a pretty coupe style body and hey presto the 100NX was born. The 100NX was effectively an evolution of the Nissan Pulsar NX also known as the EXA produced from 1987 –
1990. Designed in California, the 100NX w as an approach that many manufacturers of the time attempted to achieve. Honda released the CRX, Toyota with the MR2 and Mazda the MX3 and the MX5 to name a few. The 100NX fitted nicely into the 200SX and 300ZX family as the little brother. While it could never be called a market leader in sales (5000 models sold in the UK from 1990 –
1995),it has attained a
devout following even among ex-owners who still fondly remember their old model.
‘Even the best 100NX’s are reasonably priced’
BODY WORK
Rust proofing is comparable with other cars of its day. Adequate, but with newest cars now over 10 years old, rusty examples are becoming increasingly common. The NX shell is very good at hiding severe structural rot. The first area to inspect of any potential purchase is the rear wheel arches, right up in the strut tower, both on the inside and out. The rot found here is so well hidden it’s very often missed - even by MOT inspectors. The strut
tower is a highly stressed area taking the full compressive forces of the attached road spring - the first time some owners find out they have corroded rear inner arches is when the springing mount gives way with devastating results. Repairs are possible without having to disturb the outer arches by removing the strut towers from inside to gain access to the inner arch panels. However it is not a straight forward operation and patch repairs are rarely satisfactory – you would better to walk away and find a rot free example. The NX sports a full length body which is can hide all sorts of nasties. The body kit panels are attached directly to the body work with a combination of screws and clips, providing plenty of places for corrosion to take hold. If the example you are looking at shows signs of loose body kit ask the
vendor for an explanation, if the answer is anything but plausible, it could be that fixings are no longer gripping sound steel, again walk away. Next have a look at the bottom of the doors and rear hatch check for corrosion and evidence of blocked drainage holes. The NX’s front doors are fairly heavy causing flexing of the ‘A’ pillar; the flexing causes the paint to crack around the seams allowing water to get in and the inevitable corrosion. Strips clipped to the door tops can suffer from plastic disease resulting in a crazed texture, new ones are available but are expensive. Most owner unclip them and paint with a matching colour. The rear hatch lower panel below the spoiler has a tendency to trap water, bubbling paint is the result. Also the gas rams are probably weak allowing the lid to drop. New ones are available on e-bay. Check that the T-top roof locking mechanisms work and check the condition of the sealing rubbers. The sealing rubbers are still available from Nissan Japan but are very expensive. Fear not however, as long as the rubber is not physically damaged such as a cut or gash, most seals can be revived using one of the many rubber revival treatment products available from restoration specialists.
ENGINES
The 100 Nx was released in Europe with a choice of two engines: the 1.6 litre GA16Ds and the larger two litre SR20DE, which was available on special order. Early 1.6 95bhp engines featured conventional vacuum operated fuel and
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BUYERS GUIDE: Nissan 100NX
ignition systems that were quickly superseded by the less successful 90bhp catalyst friendly electronically controlled version in late ’91. By the end of 1993 power had crept back up to a more respectable 102 b.h.p. with the phasing out of the problematic carburettor cars and the introduction of full multipoint injection. Don’t be surprised if the air intake heater relay is missing out of the fuse box on carburettor cars, it is a recognised ‘modification’ that improves fuel economy. Official 2 litre cars are as rare as hen’s teeth. Only 5 were registered new when available although a few Jap spec 2 litre models have since being imported. Engines are extremely reliable. Expect to at least 150,000 miles from the 1.6 before expensive rebuilds are required, as long as the 9,000 mile service intervals are adhered to.
One thing the engine will not tolerate is the use of cheap engine oils; the cause of many a stretched timing chain, which are expensive to replace and an awkward DIY repair. Either use Nissan’s own oil or a good quality semi synthetic.
STEERING AND SUSPENSION
The NX’s rack and pinion steering is obedient and light, if lacking in feel due to the power steering. The driving experience is not exactly sporty, but holds the road well, its character being more like long distance tourer than a street screaming banshee. The car is easy to drive but soon reaches its limits with plenty of warning. Body flex is noticeable without the roof, as is the wind noise over 50 mph. Front end knocking from the front is usually caused by worn suspension bushes or ball joints. Listen out for clonks
on full lock indicating worn CV joints or track rod ends. Clonks from the rear end are usually caused by failed shock absorbers, budget at least £200 to have these replaced. The suspension boasts four-point adjustability, check tire wear for uneven tracking. Pay special attention to uneven wear on the rear tires, anything untoward found here could just be a maladjusted wishbone arms or the tell-tail beginnings of strut tower failure.
WHEELS AND BRAKES
Steel wheels were available on the NX but most owners opted for the 14” tear drop alloy wheels. They are not the most attractive but are well made. Many owners have ditched the original alloys in favour of slightly larger and wider aftermarket items. It seems universally accepted that a 15” wheel clothed with 6” rubber seems to be the optimum combination. If the car you’re looking at sports aftermarket ask for evidence that the alloys have the correct offset, as the wheel bearings do not like constant side loads. Braking ability is adequate for all but the most spirited of driving, but remember, the car is based
on the Nissan Sunny and shares its braking components. Seized front callipers are a common problem, replacement seals and pistons are available, but it is easier and more satisfactory to replace with reconditioned items. Carb’ versions came with rear drums the later injections, disks. Both systems are reliable if serviced according to the manufactures instructions.
‘Engine and transmission is bullet proof’
TRIM
The NX’s interior is typical 90’s Japanese – acres’ of plastic. The dash board could have been built to a slightly better quality, but to be fair nothing drops off. Heater vents and switch gear are made from ABS which could have done with a few more screws to prevent the materials natural tendency to creak. Controls are easy to use and well laid out, except for the electric window switches which are not illuminated and subsequently awkward to operate at night. The NX officially seats four, but realistically
SPOT THE GROT
1. The engine is extremely reliable, but check for untoward rattles and oil leaks indicating abuse or neglect.
2. Check wheel arches, sills and seams for evidence of rot and T-top mechanism and seals
3. Check all electrics including switch gear illumination.
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