[stevekat]

If I retain my stock M030 Koni's, what is the process for spring upgrades:



1) For the rear. Can one upgrade the big wide spring on the stock M030 Koni rear to a higher rate with a similar type spring and from what source, or can the Koni stock M030 rear shock take a 2.25" or other standard spring. If so what is needed as far as spring seats, etc.



2) On the front, in using a higher rate spring, ie: 2.5", does one need to use different spring seats upper and or lower. If so, from what source?

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[bob blackwell]

Check with Jason Burkett at Paragon Products. He sells these parts and has a wealth of knowledge about what fits where. www.paragon-products.com Good luck, Bob Blackwell.

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[stevekat]

Thanks Bob. I shall give a call this week.

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[stevekat]

Talked to Jason, seems one can use 2.25 springs, but the shock has no height adjustability, only what is left on the eccentric for the torsion bar adjustment and that heavier springs might require a re-indexing even though the car is set up for rear coilovers. A better and more efficient route may be purchasing the Koni Coilovers Paragon sells - also they are double-adjustable and can be adjusted in the vehicle (as I understand it.)

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[flash]

those are a great way to add rear spring rate, but realize though, that you will still have some potential problems or obstacles:



you won't be able to lower the rear of the car below what the eccentrics will allow



those shock will not support the entire car, in the event you later decide to delete the torsion bars and change to heavier springs - this is because of the fixed rubber end bushings - spherical bearings are required for a full coilover rear conversion, and those cannot be modified to accept them



good luck

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[stevekat]

Thanks for the info on the limitation of the rear Koni shock upgrade. I do not anticipate going full coilover over in the near future, but shall consider this when making my decision. I had not thought of that issue at all and was not aware of this limitation.

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[333pg333]

Bob, can you clarify the advantage of removing the torsion bars? Is it that with a full coilover the adjustment is alot easier? If so, do you adjust your rears much once you've settled on your shock/spring combo? I think it would be an advantage if you were racing at many different circuits that demanded changing rear rates but I would think that for most, once you've settled you probably keep with what you've got?

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[flash]

it does simplify things - it may or may not be legal in your class though - you'll need to check that



i have found myself adjusting the shocks, but only because i have not landed on what i want yet - shocks are only supposed to dampen the spring - they are not to be used to increase stiffness and make up for a soft spring - in a perfect world, you set them and leave them



however, because i only have one adjester for both actions of each damper, i may end up with a "street" setting and a "track" setting, likely one click apart

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