Thread: Anyone running fairly new King Springs?

Hi Uninformed,
I think you have explained the technicalities of what I was thinking! Springs sagging, inducing problems elsewhere in the drivetrain.

For clarity, when I put the springs in I also changed the RA's and put the DC prop on, all at the back end of 2006. All bushes are LR genuine.

Im sure the springs have sagged over time.

Approx 3 months ago the two unis were replaced and a new dust cap put on the D/C joint as that had collapsed - the splines have never been appart and there is no play in them (at least not 3 months ago).

So, if I take the prop off and the vibration goes away it begs the question is the prop ok, just now operating beyond its limits or stuffed and is it a consequence if the springs sagging?

Jon

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Originally Posted by rainman

I pretty sure they are the springs I am running and I think I have the measurements written down at home from when I put them in. I am however, unfortunately not at home. I can tell you that after two and a half years (with a 37kg bar only on the front), that my free spring length is 375-380mm (because I measured them on Saturday when I replaced the front shocks).

This probably isn't much help though. I'll have a look tonight.

Yes, they are KRFR-03 springs. When I fitted them I measured from the axle centre line to the top of the wheel arch to take out any variance in tyre pressure or size. The right side was 534mm and the left 519mm. Now (after 2 1/2 years) they are both "about" 520mm. My axle height is approx 380mm (with 235/85R16 tyres at 42psi) so pretty much bang on 900mm from the ground to the arch.

I had a steering wheel vibration a little while ago at about 90 km/h but it turned out to be wheel balancing. You did say you've eliminated that didn't you Jon?


James.

Hi James,
My KRRS-02's stand approx 905mm - 910mm from ground to bottom of arch.

These springs from new are 30mm taller than the KRFR-03's and have the same load rating. Im also running 255x85R16 tyres which have a 35mm larger diameter.

So, all things being equal and given your 900mm height, it sounds like my car has indeed sagged a considerable amount.

Tonight I'll get the tape measure out and try and quantify that a bit more.

What have you done to adjust the castor correction? Are you on standard radius arms or something else? Also, are you running a standard prop shaft?

Thx
Jon

Originally Posted by Yorkshire_Jon

Hi James,
My KRRS-02's stand approx 905mm - 910mm from ground to bottom of arch.

These springs from new are 30mm taller than the KRFR-03's and have the same load rating. Im also running 255x85R16 tyres which have a 35mm larger diameter.

So, all things being equal and given your 900mm height, it sounds like my car has indeed sagged a considerable amount.

Tonight I'll get the tape measure out and try and quantify that a bit more.

What have you done to adjust the castor correction? Are you on standard radius arms or something else? Also, are you running a standard prop shaft?

Thx
Jon

This is great! I love this exchange of detailed information .

Yes - it does look like you're sagging (said the actress to the bishop).

I am still running standard everything else. I haven't had any vibrations issues (apart from the previously mentioned wheel balancing), but I don't do any serious off roading so I'm not expecting too much from the UJs. I do notice the castor angle difference, especially in the wet. It does under steer a bit easier but I'm very conscious of it happening and it's so predictable that it's easy to correct it before you get into trouble.

My 130 with HD springs (8 coils/16mm from memory) with a free length of 420mm is a different story. There's no vibration but you really do notice the caster. It sits about 45mm higher than the 110. I'm probably going to swap them out for something about 2 inches lower because I really don't need that amount of travel.


James.

If it's any help Jon, I've been running NRC9448 and NRC9449 (the recommended heavy duty front for the 110 and standard front for the 130) in my 110 wagon for about 80,000klms over varying terrain including the Madigan Line Moguls. Distance from centre of hub to underside of wheel arch in 520mm - drivers and passengers sides, measured today.

I also ran this spec springs in my previous 200Tdi Defender and with the standard rears and polyairs + Koni shocks have found them to be an excellent combination.

Attached is an Excel file with a few spring comparisons and includes (in column A) quantities of springs I have gathered from various people over the years. I'd have to check the 'stock' but if you wanted to try any to see if it overcomes your problem, you are more than welcome - and if they work for you then they're yours.