924Board.org

[ideola]

I've been slowly collecting the pieces for the suspension, and have spent a good part of the winter media blasting and prepping for rebuild. This will be the next major sub-project. I have all of the major components, most of them photographed below:

Mookeh "pillow ball" adjustable camber plates


400# front springs & helpers


Ground Control fully adjustable coil-over struts housings loaded with adjustable Koni inserts; custom valved rear coil-over Koni shocks


Front spindles from 1986 951 (to accommodate Brembo calipers)


Front hubs from 1986 951


Front A-Arms (late offset) from 1989 944S


Dust shields


Rear hubs from 1989 944S


Rear trailing arms from 1989 944S


Adjustable spring plates with rubber bushings removed


Torsion tube carriers


Wheel bearings and CV boot kits


Torsion carrier

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erstwhile owner of just about every 924 variant ever made

[ideola]

Next week I am planning to order all of the bushings required to re-assemble the rolling portion of the suspension, comprised of the following bits:

• Paragon updated castor block (rear of A-arm, PP951.341.023.01)
  
• Weltmeister poly bushings for front of A-arm (PB-1030, set of 4)
  
• Weltmeister poly spring plate bushings, inner & outer (PB-017 & PB-018)
  
• Weltmeister front torsion tube main bushing (PB-021)
  
• Weltmeister rear torsion tube mount (PB-022)
  
• Racer's Edge trailing arm main bushing (MC2550-D)

Paragon offers this in a package for just under $490.

After much consideration and persuasion for Vaughan and Todd, I've elected not to go with the monoball since this car will be seeing significant street duty. I can always upgrade later (once I learn how to drive!) in order to wring the last bit of handling from this beast.

I am also going to get the Rennbay geometry correction ball joint rebuild kit for my a-arms. I wanted to go with some aftermarket versions, but at a minimum of $1K, I've decided that will also be a future upgrade if I ever destroy the stock alu units.

Not as critical for getting the car rolling are the sway bar components. I have the 968 M030 front and rear sways, so I will be getting the following components for them:

• KLA front sway brace
  
• Racer's Edge delrin sway bar end bushings (MC4300)
  
• Racer's Edge delrin front sway drop links (MC4200; only 1 per side...these need to be paired with a stock rubber unit)
  
• Paragon OEM replacement front sway drop link (PP951.343.795.01)
  
• Racer's Edge delrin front center sway bushings (MC4100)
  
• KLA drop link heim joint kit
  
• Paragon OEM replacement for rear sway center bushings (PP477.411.313B)

I am still debating about replacing the stock OEM rubber bushings for the torsion carrier and the torsion carrier wings. Fastech makes these, but at this point, I'm going to focus on the primary suspension. If budget allows, I will definitely consider replacing these with solid mount, but according to Vaughan, there's not much deflection in that part of the suspension, so I'm going to hold off on those for now.

I also have the Brembo four pot calipers.

I'll be researching my brake rotor and pad options next, but those don't have to be acquired until much later, as I have used brake rotors to put on for now, just in order to be able to roll the chassis around when the suspension is bolted up.
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erstwhile owner of just about every 924 variant ever made

[Rich H]

Looking good Dan!

It's like a giant meccano set just waiting to be built.


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1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

[bruni]

Hi Dan

[bruni]

Hi Dan

[ideola]

bruni
thanks, yeah, I have new tie rods on the list and haven't sorted out what to do with the rod end just yet, as I haven't found an off-the-shelf "kit". My short term goal (i.e. this month) is just to get the basics bolted back up so I can roll the chassis around in the garage, so I still have time to figure that piece out. I will probably be calling around to Paragon and a few other places to see what they can suggest, otherwise, I may just go to one of the larger, more general race suppliers and put together a rod end setup that achieves the desired effect, once I know how much adjustment will be required.
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erstwhile owner of just about every 924 variant ever made

[ideola]

I talked to Paragon today, they are not aware of a bump steer kit specifically for the 924/944. However, I did dig up a couple of possible alternatives.

Elephant Racing makes a kit that appears to be workable for the 944: http://www.elephantracing.com/suspension/bumpsteer/944bumpsteer.htm

And Weltmeister also makes a kit that is similar but built specifically for the 911/914: http://www.weltmeister.com/ProductDetails.aspx?productID=367

A thread over on Pelican indicated that the Welty kit looks compatible, but raised the concern that the end might not fit inside 15" wheels, although I'm not sure that's an issue with my setup...I won't know until I get things bolted up and check the orientation of the wheel. I am planning to run 16" Rials, so this direction seems to have some promise. I'll contact Elephant to confirm compatibility with the 944.
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erstwhile owner of just about every 924 variant ever made

[morghen]

Looks interesting...but it also looks like it will eigther kill the spindle mounting hole or that M12 bolt on top...and isnt the spindle hole conical?
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https://www.the924.com

[924RACR]

That kit looks nice - Elephant does have nice stuff. But Dan, didn't I give you a pair of front uprights set up for bump steer correction? OK, one turned out to be bent, but it should be possible to bore out the knuckle on another spindle to accept the adapter...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

[ideola]

[bruni]

The Weltmeister looks the best kit to me, the elephant is over complicated with addition of the yolk. The steering arm will have to be drilled out to take the 12mm bolt but thats no big deal. The track rod end should be dropped the same amount as the outer track control arm, this will bring the steering geometry back to the std Porsche setting. Now I have not checked but some people seem to think that the standard Porsche setting has some bump steer, this is possible as they may have designed this in, however i would be surprised if there was very much. Given that you are not out to produce the ultimate track car, I would stick with dropping the TCA and track rod end exactly the same amount
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1982 931
1975 harley sportster

[morghen]

yea...what about feel? does it go away?
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https://www.the924.com

[ideola]

Definitely some opportunity to save a few $$$ by coming up with an independently sourced "kit" containing rod ends, safety retaining washers, spacers, and hardware. The interesting thing is that the 14mm rod ends are about 2x the cost of 12mm. I believe our rod ends are 14mm. I'm guestimating the cost at being somewhere around $200 for everything, vs. the $350 for the ERP kit.
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erstwhile owner of just about every 924 variant ever made

[ideola]

Just picked these up last weekend for the UWB project.

Borbet 8.5Jx17ET13 fronts / 10Jx17ET20 rears


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erstwhile owner of just about every 924 variant ever made

[Joes924Racer]

One word ...what the yeck is a BORBET. Yea those will work,
neat.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.