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shock absorber question

johne

Well-known member
Joined
7 Apr 2008
Messages
289
done a trackday at donnington last week .while going through the old hairpin .the car started to move around.. so I think its time to change the munro shocks.dosent notice while driving on the road but plan to do a few more trackdays next year. so some advice please .do I get new springs and shocks do I buy a kit. really don't know which way to go .or which ones to buy .don't want it to stiff but deffinatlely need it more sporty than it is .any advice appreciated
 
johne said:
done a trackday at donnington last week .while going through the old hairpin .the car started to move around.. so I think its time to change the munro shocks.dosent notice while driving on the road but plan to do a few more trackdays next year. so some advice please .do I get new springs and shocks do I buy a kit. really don't know which way to go .or which ones to buy .don't want it to stiff but deffinatlely need it more sporty than it is .any advice appreciated

I went koni fsds and m033 springs. Ideal imho for A and B fast road driving. If I was just tracking the car than I'd probs have gone m030'or modern equivalent...... possible fsds m033 springs and m030 arbs, or the likes of uber modern and fully adjustable onlins etc , though personaly I think the latter possibly overkill on a 20 plus years old car. Just imo mind. :)

For road use, I truly believe I've gone the correct route. However I've replaced everything from top mounts to every single suspension component. It's not just a matter of springs and dampers imo to get the best from these cars, mileage becomes less important and a lot comes down to age and degradation of suspension parts, after all the newest is 20 years old now.

This is my rebuild:
https://www.pistonheads.com/gassing/topic.asp?h=0&f=233&t=1537100
 
FSDs are ok - but I'm keen try Ohlins or PSS10s (<- think they are called that). Don't think the FSDs tie a heavy car like the turbo down as well as I'd like. KW dampers much much better, but their springs are off the scale too firm for the condition of the average UK road. That said FSDs with standard Porsche springs aren't bad at all, jut think there could be better options out there - albeit at a price.
 
I run Bilstein PSS10's from Gert Carnewal, spring rates are not too firm for road use and semi adjustable. Good enough for Walter Rohl. The Ohlins look superb and have an excellent reputation. Have a chat with Chris Franklin at CoG he'll point you in the right direction and can set it up to your preferences.
 
The key is finding a suspension specialist who understands our cars, the effects of different suspension set ups, and your intended use so that the right options are presented to you.

There are a number of these guys. I would rate 9M, Tuthills and Center Gravity but there are others.
 
Suspension can really be a nightmare, it's not like you can normally try before you buy :D

I travel to the Pyrenees at least once a year, and there Tarmac is soooooo smooth and grippy compared to our shocking roads. Reason I went down the fsds and m033 route is that I do more driving here than there. The roads here are quite undulating (well the areas I travel seem to be) but very rarely do I find my setup too soft.

However if I lived in somewhere like Spain, I'd have gone firmer me thinks. The setup I have really is a great mix of comfort v firmness v throw ability but I'm the first to admit, for here in the UK roads it's imo just about right, but possibly too soft for constant track days or Spanish blasts. :)
 
johne said:
done a trackday at donnington last week .while going through the old hairpin .the car started to move around.. so I think its time to change the munro shocks.dosent notice while driving on the road but plan to do a few more trackdays next year. so some advice please .do I get new springs and shocks do I buy a kit. really don't know which way to go .or which ones to buy .don't want it to stiff but deffinatlely need it more sporty than it is .any advice appreciated

to be honest, all cars when pushed hard through the old hairpin will move around. if you are pushing too hard you can go through it sideways and then backwards. :thumb:

how old are the shocks, bushes and tyres before you rush to condemn them?
 
Hi John,

I went for the Bilstein B8's with Eibach Pro Springs set at RS ride height, discussed, supplied & fitted by Centre Gravity. Now like myself you came from a 996GT2 and I would describe them as very similar to the OEM/H&R setup of the standard car. Firm with a little compliance for our poor roads. Maybe a little too firm for some but they do suit a slightly more aggressive driving style without being too crashy on really poor roads.

HTH.

C.
 
ok so it was a bit more than moving around I spun once and managed to catch it the next time . but what a great circuit. thanks for the advice .if you don't mind me asking cableguy what sort of price am I looking at for the same set up at center of gravity. but every one of these set ups are better than what I have
 
just found a receipt for new springs and shocks in 2008 from camtune
 
John,

Bear in mind that the new springs & shocks you mention in 2008 are now nearly ten years old.

Springs & Shocks are circa £1000 supplied and then you have labour, setting up etc.
I spent a good few thousand with Centre Gravity as I did a lot more than springs & shocks. I had my steering rack refurbished, new top mounts, new V and toe arms, wishbone kit, ARB bushes, engine mounts etc.
My thinking was to get the whole lot done in one go which gives me more time in the drivers seat. ;)

C.
 
So another question. Can i tell the difference between m30 and m33 springs. Physically any marks length or size .as I think the ride height had to be changed to be imported from the states
 
There's no doubt that the Ohlins gear is top notch but a little OTT for the odd track day and weekend hoon.

Bilstein, Koni & KW for a quarter of the price are still excellent packages with the right springs and setup.

C.
 

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