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NIVOMAT CONVERSION

 
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tim leech
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Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Mon Feb 12, 2007 6:34 pm    Post subject: NIVOMAT CONVERSION Reply with quote

Im struggling to find a set of good nivomats (or new old stock) for my V8-S, the ones on my car are shot and the suspensions quite hard and sits too high at the rear. I dont want to fit a s/h set to fond there no better than the current ones.

I like my car to be original but Im thinking of fitting springs and shocks instead, I take its a case of taking off the old ones and fitting the new?

Im more bothered about comfort than anything as im no boy racer but I do think the Sd1 looks better slightly lowered. Can you fit vitesse rear springs and standard shocks? Or will that ruin its composure.

Rimmers do complete sets of suspension for a reasonable sum in my opinion, so I may go the whole hog and replace the lot.

Any suggestions would be appreciated.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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bertiee
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Joined: 23 Jan 2007
Posts: 18

PostPosted: Mon Feb 12, 2007 8:09 pm    Post subject: Reply with quote

alreet mate

I have just done this very same conversion using the Rimmer shox and spring kit. The rear complete was only £75 and was a doddle to fit. I also bought the spring retainer kit, a tenner.
The car looks good, riding a decent height and not too low or too high. I've just got he front left to do.

hope this helps

Simon
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Chris P
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Joined: 16 Feb 2006
Posts: 689
Location: Wiltshire

PostPosted: Mon Feb 12, 2007 9:38 pm    Post subject: Re: NIVOMAT CONVERSION Reply with quote

tim leech wrote:
Im struggling to find a set of good nivomats (or new old stock) for my V8-S, the ones on my car are shot and the suspensions quite hard and sits too high at the rear. I dont want to fit a s/h set to fond there no better than the current ones.


The one thing I'd like to be remanufactured for the SD1 is the Nivomat.
There is a DIY remanufacture guide, but it's not easy considering the
damper needs to re-pressurised. Remanufacturing requires seal
and oil renewal - I'm sure this can be done in a production environment
relatively easily.

I did think that a failed self-leveller would sink, lowering the suspension,
rather than raising it? The Haynes manual has a test procedure. Measure
the ride height with the boot empty, then load the boot (Haynes
recommends 250kg of 'human ballast' - I think the Mafia wrote that bit).
Drive around a bit (3 miles +) and remeasure the ride height. By this
time the self-levellers should have done their job and pumped themselves
up. Haynes suggests the difference in ride height empty/loaded should
be less than one inch.

tim leech wrote:

Im more bothered about comfort than anything as im no boy racer but I do think the Sd1 looks better slightly lowered. Can you fit vitesse rear springs and standard shocks? Or will that ruin its composure.


I believe the ride-height is done by the shock, not the spring. The VDP EFi
has the same spring as the Vitesse, but uses the same Nivomat as other
SD1s. At least according to the Parts Publication. So, fitting Vitesse springs
won't lower the suspension. Remember, changing from Nivomat to normal
dampers require new springs.
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tim leech
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Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Tue Feb 13, 2007 12:28 am    Post subject: Reply with quote

No problem, I understand that nivomat springs are different to standard ones.

The suspension on the rear of my car seems rather hard and sits high even though ive fitted a replacement set of nivomat springs to it which weer fractionally shorter than the ones on it. If my nivomats are the originals they are 28 years old and past there best.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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tim leech
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Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Tue Feb 13, 2007 6:54 pm    Post subject: Reply with quote

So are Vitesse springs much lower than standard, to be hones its only the rear that sits too high for me.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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3528cc
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Joined: 18 Feb 2006
Posts: 138
Location: Darlington

PostPosted: Tue Feb 13, 2007 11:31 pm    Post subject: Reply with quote

Vitesse springs are 1" lower than std spec.

I fitted vitesse springs on my VDP with std shocks, but fount the dampers bottomed out on large bumps with passengers on board, suggest vitesse spec dampers too Wink

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Royston
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tim leech
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Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Wed Feb 14, 2007 11:19 am    Post subject: Reply with quote

Hmm but then the suspensions harder than usual, my othe cars are hydraulic citroens so i like a soft ride, my days of going round corners fast were years ago lol

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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Chris P
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Joined: 16 Feb 2006
Posts: 689
Location: Wiltshire

PostPosted: Wed Feb 14, 2007 10:26 pm    Post subject: Reply with quote

tim leech wrote:
So are Vitesse springs much lower than standard, to be hones its only the rear that sits too high for me.


I've heard from others than replacing springs can be hit and miss as far
as ride height goes. A Vitesse should sit 1" lower than the other Nivomat
SD1s, e.g. the VDP EFi (which has the same 'uprated' suspension').

The parts guide suggests the Vitesse and VDP EFi springs are the same.
The Vitesse having a unique Nivomat, the VDP EFi using the same as
other SD1s.

But, the Rimmers site suggests the Vitesse and VDP EFi springs are
different, but use the same Nivomat! The opposite of what the parts guide
says. This might be the source of the confusion - Austin-Rover and their
dodgy manuals!

Really confusingly, both the parts guide and Rimmers say the Vitesse and
VDP EFi have the same front springs and strut inserts - so how can the
ride height differ Confused Confused Confused
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tim leech
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Joined: 19 Jul 2006
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Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Thu May 03, 2007 2:55 pm    Post subject: Reply with quote

Got out bid on a set of nimats last week which went for more than the complete kit from Rimmers!

Before i spend the £100 is there anywhere else cheap to get these from?

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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tim leech
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Joined: 19 Jul 2006
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Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Sat May 26, 2007 3:07 pm    Post subject: Reply with quote

Another set of nivomats just went for £170! not including springs!

So what Im going to do is get a complete suspension Kit from rimmers for £15 more but will get the Vitesse/VDP kit which sits a inch lower as my car sits far too high, especially at the back. That way I get new shocks all round, I know some may think its sacrileldge lowering a Mk1 but I think they look that bit better lower.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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v8driver
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Joined: 15 Jun 2006
Posts: 214
Location: South Wales

PostPosted: Sat Jun 02, 2007 6:04 pm    Post subject: Reply with quote

I don't know if your still looking but these should be cheap enough to get posted

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Half Poly bushed 3.5 Twin plenum VITESSE(Waiting patiently for better weather)
Baby Blue D889 MOJ Daily driver
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tim leech
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Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Sat Jun 02, 2007 8:07 pm    Post subject: Reply with quote

ARSE Too late ive bought and paid for my rear shocks and springs from Rimmer bros and they are enroute!, never mind.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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v8driver
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Joined: 15 Jun 2006
Posts: 214
Location: South Wales

PostPosted: Sat Jun 02, 2007 8:29 pm    Post subject: Reply with quote

Sorry mate, I've been looking since you posted but those were the first I found

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ramon alban
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Joined: 14 Feb 2006
Posts: 479
Location: Bedford UK

PostPosted: Sat Jun 02, 2007 9:34 pm    Post subject: Reply with quote

tim leech wrote:
ARSE Too late ive bought and paid for my rear shocks and springs from Rimmer bros and they are enroute!, never mind.


For what its worth, I changed from nivomat to conventional shocks and springs on my vitesse a while ago and it behaves immaculately.

Two things, I dont often carry passengers in the rear or heavy loads and I'm not using it to tow a caravan now (use the shogun for that) so the need for self levelling has pretty much been eliminated.

My understanding is that with nivomats the ride height was determined by a combination of the nivomat and the rear spring, hence the need for a different nivo for the lower vitesse setup.

With conventional shocks the ride height is determined only by the spring.

Regarding the comfort of the ride, I dont believe there will be any significant difference between the two options.

However, the type of bushes make a lot of difference.

I have hard poly bushes all round and I am getting tired of the clattering over pot holes and rotton british roads.

Not only that, the hard bushes cause a deterioration over along period of time (13 years in my case) to all the internal fittings and trim fixings, so the damn car twitters away to itself on country lanes etc.

For that reason I plan to revert to regular bushes (or softer poly's) all round.

I will lose a bit on road holding but nothing I cant cope with since I handed in my Boy Racer ticket.

Ramon

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tim leech
SD1 Regular


Joined: 19 Jul 2006
Posts: 1006
Location: Rover Returns, Leech Towers, Middle England.

PostPosted: Thu Jun 07, 2007 2:03 pm    Post subject: Reply with quote

!UPDATE!!

Had the conversion done today, and I must say im delighted with the results, the rides SO much better, smoother and doesnt crash over the potholes, also with the vitesse rear springs that car now sits level and looks far less "jacked up" and a bit meaner too Very Happy

The old self levellers are rock solid hence why the ride was so bad.

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1979 Rover SD1 V8-S
1987 Rover 2600VDP Auto.
1985 Citroen BX 19GT
1990 Citroen BX 16v
1994 Citroen Xantia 1.8i SX
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