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MO30 Setup, Right/Left Bias, and Rear Coil-Overs

My front struts are shot and I finally have an excuse to upgrade my suspension. The MO30 setup seems to make most sense because it is common, proven and was a factory option. Besides Koni shocks and harder bushings, exactly what parts consist of the MO30 setup. Are there any serious modifications required for my '87 944 NA (stock suspension) to have a MO30 setup or can I simply swap parts?

Also, I'm 6'1" 215lb guy and was curious whether or not I should consider getting slightly harder springs on the left side of my car to compensate for my weight. Is this common practice? Is it worth it?

Lastly, (and probably the most difficult question to answer as I am sure it is a matter of use and opinion), is it worth doing away with torsion bars and getting coil-overs in the rear. It's obviously an expense but is it a real improvement and does it make my rear-setup easier to work with?

As usual, any suggestions are always appreciated
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944 NA 5-spd, Red, 1987 - 2005
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944 Turbo 5-spd, Black, 1987-present
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Old 01-29-2004, 06:42 AM
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Well I will ask what the use is? Just a matter of stiffening or race/Auto X?

M030 is the Sport Option offered on all models 924 thru 968. The main components are the Sway bars-size depending upon model #, the appropriate bushings (rubber) for that size bar. Rear sway was included as many 924S/944na's come without creating the need for drop links. Mounting hardware/bushings is your choice, OEM or Aftermarket. The Sport Option also included Koni Sport struts/shocks. I believe they are adjustable perches but not sure. As far as Torsion bars go that also depends on the use of the car. It does reduce weight to remove and the adjustment in height would be on the coil overs so I think it would be much easier to make adjustments.

Loose weight big guy! j/k! I would imagine that your weight can be compensated by corner balancing and weighting rather than run a staggered spring. Sounds risky to me. All I have to offer till we see your intent with the car! Sman
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Last edited by 924Sman; 01-29-2004 at 07:18 AM..
Old 01-29-2004, 07:15 AM
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hey i have a question: if you have the yellow Koni shocks in the rear, does this mean you have the M030 sport option?
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Old 01-29-2004, 07:59 AM
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No Do you have a rear sway bar? Sman
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Old 01-29-2004, 08:08 AM
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924Sman:
My '44 is primarily a weekend driver with serious intent for some driver's ed. and auto-X'ing when the weather clears up.

I will definitely be upgrading to the MO30 setup with Koni yellows. I am still unclear exactly what are all the parts needed for the MO30 setup and if it is just a simple swap of parts. Too bad the rear Koni Yellow shocks aren't externally adjustable like the front Koni Yellow Struts.

I doubt I will be getting coil-overs because of the expense and my lack of track experience but they are fresh! I might consider getting thicker torsion bars also.

You mention corner balancing and weighting. What does that entail? Adding/removing ballast to compensate for the weight difference? Sounds too difficult for me. Have you heard or seen of left/right spring rate staggering for compensation of driver weight? I was considering maybe 25lb spring rate difference.

BTW, does anyone know what the spring rate is on a stock '87 944 NA?
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Old 01-29-2004, 09:48 AM
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i don't think i have a sway bar... in my option codes, it only lists the "sport shocks"
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Old 01-29-2004, 09:53 AM
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Quote:
Originally posted by CJFusco
i don't think i have a sway bar... in my option codes, it only lists the "sport shocks"
sounds like you got the sport shocks but not the MO30 setup
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Old 01-29-2004, 10:08 AM
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dj....At 6-1 215 I wouldn't worry. Many drivers are larger than that!

Corner balancing involves the position of the suspension and the force each corner creates in downforce. The suspension is set where all corners handle the same amount of force equally.
So with your added weight a good alignment guy would set the balance with your weight included to equalize the balance. And yes at times ballast is needed. Re distribution of weight can help also.

CJ....I would say you just have replacement shocks. Sman
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Old 01-29-2004, 10:10 AM
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no, not replacement shocks. the option codes list "sport shocks," which the Morgan book discloses are Koni Yellows. I am pretty sure my rear shocks are stock.
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Old 01-29-2004, 10:49 AM
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Could be! PO ordered the rears at purchase. What is up front? Sman
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Old 01-29-2004, 11:10 AM
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the stock boge inserts, black casing. i don't think there is a rear sway bar; there is a small bar that runs close to the chassis between the rear shocks, but i think this is more of an anti-roll bar? if it were a sway bar, it would be listed in the options sticker, right?
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Old 01-29-2004, 11:18 AM
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That is a sway bar. Hard to say but any option can be ordered and it could of had front Koni's as well and replaced with the Boges but highly doubt that. You have half the sport option. Porsche calls it a Stabilizer vs. sway bar. Sman
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Old 01-29-2004, 11:37 AM
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M474 - sport shocks Konis all around internally adjustable. M030 has externally adjustable Konis plus the other gizmos. I believe that the 87 951 came stock with front and rear sway bars.
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Old 01-29-2004, 12:06 PM
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924Sman:

I didn't think it would make that much of a difference but I figured if I am getting uprated springs, why not attempt to compensate for the left/right weight difference.

From what you are saying, it sounds like the only way to corner balance is by adding/shifting/removing weight. Can't varying spring rates achieve similar results?

Few questions still unanswered:
(1) What exactly does the MO30 setup consist of? (bushings, inserts, bars, etc.)
(2) Does switching to the MO30 setup just consist of swapping parts?
(3) What are the stock spring rates? (I am assuming they are all the same considering the near perfect 50/50 weight distribution)

New Question:
I currently have stock 15" phone dials.
Does anyone know the width of these rims?
Does anyone know the weigh of these rims?

Thanks again.
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Old 01-29-2004, 12:53 PM
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Dj Yen, I believe they are 7 inches wide. I haven't been able to find an exact weight, but this site says the 16x7 phone dials weigh 18.5 lbs...so they are probably a little less than that.

http://www.wheelweights.net/
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Old 01-29-2004, 01:50 PM
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UconnTim97

Thanks for the info. Interesting site.

btw, I checked your site and photos... very nice specimen. looks like it is in great condition esp. considering it only has 61k on the odo
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Old 01-29-2004, 05:10 PM
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Hey, thank you.

I forget where I found that wheel weight site, but it seems to be a good reference point.
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Old 01-29-2004, 07:28 PM
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what size (diameter) are the stock M030 sway bars? 22mm?

I will post pics of what I THINK is my sway bar... actually it would probably just be easier to check my option codes again
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Old 01-30-2004, 07:51 AM
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CJ......83 944........14mm rear and 20mm front stock M030 is 21.5mm front and 23.5mm
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Old 01-31-2004, 06:12 AM
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dj........PD's stock are 6 and 7" wide


Spring rates are around 21.8N/mm or close to 160 lbs. or less
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Old 01-31-2004, 06:15 AM
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