knfeparty

Need some new old stock springs for stock class.

Anyone know where to find some?

Saw some 220lb "stock ride height" ones on Pelican but didn't say who made them.

J Silverman

Do you run SCCA stock class? If so you can only use springs that came stock so those wouldnt be legal. I think the best option is if you can find M030 springs and perches. Im pretty sure they are the stiffest available and you can legally adjust front ride height.

knfeparty

Well it's not for SCCA club racing, it's for autocross. But our club goes by SCCA rules, although they are pretty lenient. I'm assuming you mean the ones on Pelican are not just like the original ones I have...or you're telling me I can't buy a direct replacement item, which I doubt.
I already have koni sports I bought last year (we are allowed to do whatever we want with shocks and front swaybar) so I don't want to go swapping the whole strut, but I think I am due for an upper strut bearing so I wanted to do something about my springs, which I believe are losing some stiffness.
I can install option packages as long as I install the ENTIRE package and not just part of it. What does MO30 entail? I have M547 or something like that - 25.5mm front bar and 18mm rear came on the car for a fact. If it isn't too pricey, this might not be a bad idea, since I could then adjust the whole car's ride height legally...

J Silverman

SCCA stock requires original springs. The only replacements allowed must be identical in spring rate and ride height. The only exception is that you can update/backdate models which means that you can swap any springs in from another 944 as long as they are listed on the same line in the rule book. Also you can swap option packages as long as you swap the complete package. I think the M030 package was just an 18mm rear sway bar with koni yellow shocks and a factory version of the GC coilover kit. I think it also has the stiffest stock springs as well, but I can check the manual later to verify. New old stock of these parts isnt cheap. Ill be taking the stuff off my 924S (perches and springs) this weekned if youre interested.

knfeparty

well if it's just perches and springs then yes definitely, because I already have everything else and VA is not too far to go. where are you looking all this 944 stuff up? I perused the SCCA rulebook for autox once.

I'm waiting to hear back from pelican...but I guess maybe you know what the stock spring rate is?
And as far as that up/backdate thing, are 968 castor blocks legal since that is now the "official" replacement part?

GTSilver944

I'm not sure on the SCCA rules, but I have 220# stock height and love them. Stays much more flat in the corners and doesn't dip down under braking.

J Silverman

Im looking up the info in the factory manual. I forgot that I copied it off my cpu on to an external HD so Im trying to find the cable now. IIRC the stock rate is ~120# or so and the M030 are ~150#. It has a complete list of all the suspension packages so I can tell you everything it had. If the 968 castor block part number has superceded the 944 part number then its legal as its a stock replacement part. As soon as I find the power cable for the HD ill post the spring rates.

chris_v

i have some super rare M030 924s front koni coilovers....... you can pm me with non selling related questions

J Silverman

Ok here are some spring rates for you:

924S/944 up to MY 86 M030 (what I have) 138.75 #/in
Standard 924S/944 124.27#/in
944 87+ M030 159.6 #/in

I also have the rates for 944S, 951 etc. One thing that is interesting is that the 924S and early M030 parts are 12.3 mm diamteter, while the later 944 M030 used varying spring diameters from 11.7-12.2mm which is probably supposed to be a "progressive" spring.

If you are trying to get the stiffest spring you can Id try to find a pair of 87+ M030 springs part number 944 343 531 00. The next stiffest would be the 924S/944 M030 springs.

teamking

Update/backdate is NOT legal in stock classes.

knfeparty

well to be totally legal, since my car is an 89, to get the M030 package as offered on that car I would need those 159.6 #/in springs.

Is the actual m030 strut (besides the insert) different or just the upper perch? Because I don't want 924 springs, and I don't want any koni inserts (being as I already have a BRAND NEW set installed), but I do want the adjustability of the m030 and I want to be legal.

I don't have the shop manual so I appreciate all the help here.

J Silverman

But option package conversions are allowed. When I said update/backdate thats what I meant. I did just re read it and youd have to use the parts from an 89 as thats what the rules require. The only difference in the struts is that the spring perche has been removed on the M030 housings. I don tknow if the 89s had servicable struts but the rules allow you to cut the struts to install new ones, so th eonly difference I think is the lack of a spring perch on the M030 strut. I think techncially youll need to have the M030 housings, but since its not an advantage and its a modification to allow for legal parts I would be ok doing it as long as you arent competing at divisional or national events.

moorepower

How do you know which springs you have in the first place? Is it by the colored paint dots on the spring, or is there a part number stamped on it somewhere I can't see?

knfeparty

You know when your bumper kisses the deck when you brake hard.

J Silverman

Each car got a certain part number depending on which options you have. The springs were seperated in to tolerance groups due to manufacturing differences. In the factory manual they list a generic spring rate and then you can use the dots to get a more accurate spring rate, but its still a range.

knfeparty- check your PM