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Nitron 40mm NTR Fast Road/Track Day Suspension Kits now available for the Esprit - Page 2 - Suspension/Brakes/Wheels/Hubs/Steering/Geo - The Lotus Forums Jump to content
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Nitron 40mm NTR Fast Road/Track Day Suspension Kits now available for the Esprit

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yes, my 89SE originally had upper rubber cushions, and the larger O.D. springs fit on the outside of the metal lip in my chassis spring perch cup.

 

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My friend's '91 X180-R also had the larger spring perch cups that fit a 2.5" spring.

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@ian29gte my upper spring perchs had 2 weld beads on either side, so I machined notches in my aluminum adapters to allow them to sit flush.

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14 hours ago, Vulcan Grey said:

My friend's '91 X180-R also had the larger spring perch cups that fit a 2.5" spring.

Z5baOCjB70Im5Afz-jAvvOYXiCO1Vd_pnoCCOZTb

Your friend has got it wrong here Travis..... The 2.5''  spring does not fit into the later chassis cup... it is to small and will shift under load.. You can see the slack in the top mount on the pic.     I run the 2.5'' springs on mine but they do need an alloy inset front and rear to keep the spring centralized..  Much on the lines you have done but internal rather than external as circled in red on following pic

HPIM4307.JPG

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I suppose the sensible question to ask at this point is 'what diameter are the original Lotus springs, and does the diameter differ model-to-model?'

Mind you, from what I've read, it appears that Nitron would manufacture an adaptor to suit.

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4 hours ago, ian29gte said:

Mind you, from what I've read, it appears that Nitron would manufacture an adaptor to suit.

Yes it seems they do , they used an internal collar to centralize with their spring dia on Trev's ..  You can just make them out in these pics..

HPIM4293 (2).JPG  

HPIM4299 (2).JPG

 

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So my question is this: does these centralising parts (4?) come with the kit, o does the buyer have to mention this to the Company, WHO will then supply them?

Kind regards,

Jacques.

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On 30/10/2016 at 21:31, Jacques said:

So my question is this: does these centralising parts (4?) come with the kit,

To the best of my knowledge the answer is NO.

Nitron supplied and fitted the kit to Trevors  350 sport , so they have a deign for the later chassis adapters which I presume they could supply if requested . However they do not feature in the original spec list so may be at an extra cost.

Unfortunately this will not apply to the SE chassis set up .

On 30/10/2016 at 21:31, Jacques said:

or does the buyer have to mention this to the Company, WHO will then supply them?

The hurdle here is most suppliers will not have the Lotus Chassis data to be able to manufacture from .  The best option is to find a specialist who has experience with this type of upgrade, give them your Esprit an let them to do the whole set up for you..  This way you get the correct springs, dampers, and fitting kit for the spec you desire . This should also include re-tracking and corner weighing, which should be done to complete the task correctly, regardless  ..

There should be some local m/sport company who could help you.  The only down side will be the cost.              

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Thanks for the info. I'll contact Nitron then, and have a chat with them on what they can do.

Unfortunately, noone in Denmark are able or have experience working on Esprits. So I'll do it myself anyway. Geo will be needed anyway, since I am doing other jobs on suspension. Cornerweighing I can solve with a friends equipment.

Kind regards,

Jacques.

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Jacques - When you're in touch with Nitron it would be good to know whether the kit being offered is actually a direct fit, or not. It appears to be advertised as a 'bolt-on' affair, and if it's not, some people will have a shock* when they come to fit it.

*No pun intended.

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I agree Ian, and I am looking for a bolt on, all inclusive kit ;) Thats' what I like about KW, it works and is complete (on my Corrado).

Sorry, not everyone have a personal workshop or an education in relevant mechanics to support the installation of a suspension kit ;)

I am not in a position to lend Nitron in the UK my car, nor do I leave it anywhere else to a company, whose best guess at what they should do, together with a limitless bill and the keys for my car. "Oh sorry sir, our apprentice just wanted to chek out if the suspension installed are working correctly, and unfortunately crashed". Not going to happen. No pun intended from me either. If someone is going to do the work, it'll be me, I just need the parts.

So, I'll talk to them in a few days, as I am working 12 hours a day these days.

Will report back.

Kind regards,

Jacques.

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@Jacques  I have a CAD drawing of my rear upper 2.5" spring perch adapter for my 89SE, and then the part number for the Energy Suspension spring isolators that I used.  You could talk to a local machine shop and get a quote to have those made from aluminum.

 

 

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Yes, please!!! ;)

Most helpfull, and thank you very much in advance !

Sent you a PM with my email, if that will do, for the drawing?

Kind regards,

Jacques.

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The Lotus S4/S4s/S300 parts manual shows insulators between the springs and seats, both front and rear. Front is P/N A082C4069F, rear is A079D4028F. At the rear, the manual also shows P.625.3103.009AF in the same position, but as a rear spring seat, and depending on the model. The manual doesn't state whether they are alloy or rubber, but my fronts appear to have the same steel cup as Travis' photo. As I haven't yet dropped the rear dampers, I can't say what they have up top.

The later 96-04 cars rear suspension also shows an insulator, but states it is alloy.

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On 09/12/2014 at 10:50, Trevsked said:

It's difficult to get across what these are like in terms of improvement and as I've said before the highest compliment I can give is that they are just what I would hope for from the factory, which isn't surprising as Nitron make shocks for original fitment on some of the range. If anyone is seriously interested and sees me at a meet with the car then I would be happy to take you out for a drive.

 

Yes I know the rest of the suspension need a facelift.

 

Trevor.

Hi @Trevsked

What spring rates did you go for and are you still happy with the kit or have you changed it again?

cheers

-Chris

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Hi Chris,

 

i really can,t remember what the rates were but seem to think they were pretty low and 300lb all round rings a bell. If you speak to Nitron and ask them what they put on my car I'm sure they will have record.

 

Trevor.

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All right, I've been working on the permission to use this set from Nitron, and am nearly there. Things takes time it seems ;)

I'll be corresponfing with Nitron as soon as my working scheme permits, and report back here what I find out.

Kind regards,

Jacques

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I’ll be interested to hear the results, I’m contemplating using Nitron for my replacements.

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Hi all,

I've just spoken to Nitron in the UK regarding their suspension kit for the Lotus Esprit (as mentioned in the shop section on here).

They told me the following:

* The kit is only developed for the Lotus Esprit V8 cars.

* The kit doe not containany asaptors to suit the springs in relation to the chassis (cups etc).

* They are not willing to make any asaptation to their kit.

* They are not willing to supply any information of the adaptors they did make one example of, for a customer in Newzealand.

* The kit is sprung in 60nm. front and rear.

* They can increase or decrease spring sin 10 Nm increments if so wished.

* They do not supply any papers with the kit to legalise it in the EC etc.

* They will on request supply a letter stating that this kit is made to conform with this and that car.

* They told me, that the springs in their kit is 2 1/4" i.d. (I don't know if that's correct or not)

 

That's it. Cannot be supplied to fit any four cylinder Esprits, and they said it straight, that they don't want to be bothered to do any adaptation bits to suit the four cylinder cars.

I must admit they did not seem particularely interested in selling anything, and it didn't help when I mentioned that there are far more 4 cylinder Esprits thatn V8's and that there is an ongoing thread on here, in which other people express interest in their suspension kit. I think that's a bit sad, really.

Suggestion: can someone on here tell me if I need two or four adaptors to make the Nitron kit fit? And precise dimensions for all two or four parts?

Is any other parts needed, like for example to make it fit on the lower bolt point?

Anything else?

Personally, I'd probably take the kit a wee bit harder sprung, as it seems a tiny bit too comfortable from what I read above.

What's the alternative to propper suspension then?

As I see it there's Öhlins (even more expensive) and Leda etc, to be built on request. Then there JRZ which mad at least one set. They all need some sort of adaptors to make them fit the cars (as seen on this thread).

I have now called Öhlins in Sweden, but they were unable to transfer me to the right department, as they were closing very early in Sweden. Will try Again asap.

Kind regards,

Jacques

 

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