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Registered
Join Date: Sep 2006
Location: Solana Beach, CA
Posts: 313
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Corner balanced. Does it look right?
This is how the ride height came out on a fully stock 930 with all the heavy smog equip included thank you CA. Does the stance look correct? Still looks a little butt heavy, but then again this car has a big butt, and the scales don't lie I suppose.
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997 Boxster Spyder |
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Hard to tell, given the perspective of your photos, it appears to be on a slope. The car's butt appears to be dragging.
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Lincoln Phillip 87 930 Motec EFI M600 G50/50 TurboKrafted Hell Hound. Jeep, Chrysler, Dodge, Ram, SRT & AEV Dealer pm me for your Mopar needs. "the 930 is THE CAR that started my PORSCHE love affair..." Magnus Walker |
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beancounter
Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,593
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Agree with Linc that its hard to tell from photos. That said, my research on the subject in preparation for a DIY alignment and ride height indicated that the typical set up will have a small amount of forward rake, as in the front will be a bit lower than the rear.
I ended up paying a local race shop with lots of experience to set my car up. The front is definitely lower than the rear.
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Jacob Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690 Past: 2009 997 Turbo Cab / 1979 930 |
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Max Sluiter
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It can be corner-balanced with the rear low. Theoretically, you could take note of spline positions on the spring plate and torsion tube and raise both sides exactly the same amount without affecting the corner balance. That is easier said than done, though.
Remember there are different numbers of splines on the inner and outer ends. 40 and 44. Can't remember which is which but the bottom line is that this allows for finer adjustments by moving one spline on the inside and then one spline in the opposite direction on the outside.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Registered User
Join Date: Nov 2011
Posts: 57
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cool car you've got..
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Registered
Join Date: Sep 2004
Location: Tonawanda NY
Posts: 964
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US stock ride height 25" to wheel arch in the back, 25.5" in the front. .5" lower on the rear
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82 930 Pearl White 3.3 964 cams, K27 HF, Kokeln, fuel enriched, IA fuel head mod, wur mod, crankfire, 2X plug, Aase worked heads. 1bar, GHL, zork, 23/33 bars, low, loud |
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Max Sluiter
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Fender heights are not the correct way to measure ride height. The lower fender height in the rear is due to the shape of the flare. The front flare is pretty round. The rear is more stretched out front to back and so is lower.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Smart quod bastardus
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Try measuring from the ground up to the bottom of the rocker panel in front of the rear wheel and right behind the front wheel. The difference in height should be about 1/2 to 3/4 inch to get the front rake that you need.
Car looks ok to me. Ride height looks like a good compromise for a street driven car.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, full bay intercooler, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.95 bar max ---"When you're racing it's life! Anything else either before or after, is just waiting" |
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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Ride hieght and how it looks is a matter of taste if within reason and nothing is rubbing.
The back looks OK but the front is around an inch too high for my taste and since you've had the torsion bars corner balanced and you don't want to change that I'd lay down next to each front wheel and reach under the front with a 3/8 ratchet with 11mm socket and turn the torsion bar adjusters counterclockwise an equal amount on each side. That shouldn't change the balance left to right in front and only lower it. It's easy to turn each adjuster 1/4 turn at a time by watching the position of the ratchet handle. I'd guess a full turn counterclockwise on each front adjuster will lower it around 3/4". You can always turn them back if you don't like it. You have to drive the car a little to settle the suspension after adjusting it and lowering the front will toe the front wheels in a little so the tie rod ends will have to be adjusted to toe the fronts back out to where they were or should be after lowering it. |
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Registered
Join Date: Sep 2006
Location: Solana Beach, CA
Posts: 313
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Thanks for the tip. Had it adjusted, now I think it sits just about perfect. Fenders measure 24.75F and 24.25R
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997 Boxster Spyder Last edited by svb; 11-30-2011 at 06:28 PM.. |
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Registered User
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Ride height looks good.
But more to the point , what an awesome looking car!
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79 Silver 930 SOLD ![]() |
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I like your clear lenses in front. Where did you get them?
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Registered
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Svb, it is looking sweet on those last pictures.
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Jesper Carrera 3.0 1975 930 1978 OEM Matte Schwartz, ANDIAL IC, BL WUR, SC cams. LMA-3 w. XD-16 and CP transducer www.stauningwhisky.dk |
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Registered
Join Date: Sep 2006
Location: Solana Beach, CA
Posts: 313
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I got the lenses from Vertex Auto. They are Bosch pieces and very high quality.
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997 Boxster Spyder |
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Join Date: Jun 2007
Location: Kauai, Hawaii
Posts: 422
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I used to work at a very popular restaurant in Solana beach. It burned down & was reopened at another location...........
As for your 930 "Praise the Lowered"!
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88' 930 03 Tacoma, 04 Duramax, 06 R350 Benz If you are traveling at the speed of light & turn on your headlights, does anything happen? |
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Non User
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Looks good lowered, wish I could go that low, my driveway won't let me, I'm right about at euro height and drag coming off the driveway every time.
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Infraredcalvin - AKA Pat '76 Turbo Carrera #311 - Factory LSD, Sport Seats ‘71 914-6 GT 3.4L twin plug track car '75 914 GT clone project '71 914 track car, fresh 2165 FAT motor (for sale soon) |
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Registered
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You can, as already stated lift or lower the front or rear without affecting the corner balance - but you have to do EXACTLY the same to both sides. I use a 1 Deg rake - front downwards. You can do this with a spirit level along door sills. Once you get corner balance pretty right. You can calculate this out but over a spirit level of about 760mm you need about 12 mm height difference between the ends. Any other length is proportional. These may not be exactly right (memory) but are close. I can calculate it exact if you need precise numbers.
You can set overall height more or less where you want it - driveway etc permitting, but I believe the front down rake is to compensate for the squat the car takes up under power. If you had a driveway issue you could compromise by taking a bit out of the front, but hopefully maintaing a front down rake. Or raise the whole car. Alan Alan Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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Registered
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Just for completeness, in case others use this thread as a refernce, the inner splines are 40, and the outer 44. This difference is so you can get small adjustments with rotate/counter rotate. One spline adustments = approx 8-9 deg rotation - depending which spline = approx 80mm adjust at the axle. You get about half that with the spring plate to tweek. If you do one spline rotate and one counter rotate you get 0.8 deg adjust = about 7mm adjust at axle, so if you did 5 rotates/5 counter-rotates you get about 35 mm adjust at axle.
You cant afford to 'drop the ball' doing this - or you loose your reference place in terms of adjust/counter adjust. ie you need to feel each and every click on inner and outer splines. To safeguard against dropping the ball you can scribe a mark along the spring plate edge on the car body while it is all hanging free. You will always be able to come back to this mark eventually if you have too. Alan Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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