Are these parts interchangeable? I assume the slotted pin being referred to is the ball joint pin - it what way is it larger?

944/968 87-95 na/S/S2/Turbo non-M758/M030 - cast aluminum - 944.341.027.02 (left), 944.341.028.02 (right)

944/968 87-95 M758/M030 & 89 Turbo - Cast Aluminum (larger slotted pin) - 951.341.027.31 (left), 951.341.028.31 (right)

...source Paragon

 

The ball joint pins in MO30 arms are not larger. They are 17mm just like the non MO30s. The only arms that bump up to the 19mm are the aftermarket Charlie arms and our 19mm ball joint rebuild kit for the stock aluminum arms witch will be available for sale next week.

 

so whats the difference between the M030/758 arm and the other?

 

The MO30 has some extra brake cooling tabs and the aluminum is a little thicker towards the end of the arm. Ball joint does not change.

 

OK - must be just the thickness at the end because the tabs for the ducts only came out with the 968

Has anyone actually and purposefully compared the 2 parts?

 

The only difference between the standard 944 arm and the M030 arm is the rubber bushing. The M030 arm has a stiffer rubber bushing. The casting is the same.

The 968 arms have the tab and holes for the lower brake cooling scoop. All late offset arms now superceed to the 968 M030 part number, so if you buy a new one from a dealer, this is what you get.

 

so the casting is not thicker towards the end of the arm - MO30 is just a stiffer bushing

 

The casting is definitely not the same. The M030 has increased webbing between the center and sides, and as Travis says, slightly more thickness in places.

Sam

 

any body got the porsche casting number off the M030 Arm?

 

Sam, can you post a picture of that? As far as I could tell, side by side, the arms I took off my 87 Turbo and 87 S were the same as the arms on my 89 turbos (but that was a few years and several beers ago now).

 

George, I can get you a couple numbers tomorrow, if someone else has not posted them by then.

 

Hey, that would be much appreciated - all seems a little light on fact at the moment

 

On a slightly diff topic ( sorry ) would anyone ( Jim ) have the part #'s for replacement bushings for a front 30mm sway bar and where could they be gotten....
And ( sorry ) what do you guys think of the Derlin ( if that's what they use as a option to rubber ) bushings vs the rubber ( for mostly street use)
Thanks Guys
Regards
Ed

 

Oddjob, I may have some pics left, I'll have to look. I sold the arms in question 3 months ago (it was a mismatched set of one '87 and one '89, that's why I immediately noticed the difference).

Sam

 

Casting numbers on the 944TS/M030 arms are 951 341 150 10
Casting numbers on the 968 arms are 944 341 150 02

Ed, I dont have a part number listing for the sway bar parts in front of me, but I can get back to you within a day or so. Send me a PM if I forget. The standard rubber bushings are available from a dealer for the 968 M030 30mm front bar, not too expensive. The Delrin bushings are made by Racers Edge and can also be bought through Paragon Products. And Im sure that Paragon also sells the stock rubber ones too, most likely on their website. Due to the pivot geometry of the sway bar vs the control arms (in two different planes), I like to have rubber on my sway bar mounts to allow some flex. Especially for the street, go with rubber. The delrin/solid bushings may have a tendancy to make some noise.