5 race 928's on track....!!!! (norcal weekend)
04-11-2012, 06:47 PM
#46
Race Director
Thread Starter
Hi Brian!
Thank´s for the nice videos.
I´m building a trackcar of a -90 GT 5 speed and are planning to go with similar spring/shock arrangement as you have. Do you remember your shock lenght front and rear? and also i understand that you run 800 pounds springs, I guess in the front, what do you run in the back?
Stock swaybars?
Would appriciate any feedback before putting in my order on shocks and springs...
Jerry
Thank´s for the nice videos.
I´m building a trackcar of a -90 GT 5 speed and are planning to go with similar spring/shock arrangement as you have. Do you remember your shock lenght front and rear? and also i understand that you run 800 pounds springs, I guess in the front, what do you run in the back?
Stock swaybars?
Would appriciate any feedback before putting in my order on shocks and springs...
Jerry
I didn't build this car....I bought it from the guy that built it
From what I understand this is what I have
800lb front 500lb rear on custom Bilsteins (in terms of valving)....heim joints top and bottom....front sway is a "devek" model....rear is stock with adjustable drop links (also known as ott links).....
While the front feels good....the rear might be a touch too stiff....I plan on loosing the rear sway bar one spot (the looser spot)....if that doesn't work I will disconnect it... My rear ride height is far too high too....the suspension might feel better once I lower the rear
04-11-2012, 09:07 PM
#47
Rennlist Member
Jerry
I didn't build this car....I bought it from the guy that built it
From what I understand this is what I have
800lb front 500lb rear on custom Bilsteins (in terms of valving)....heim joints top and bottom....front sway is a "devek" model....rear is stock with adjustable drop links (also known as ott links).....
While the front feels good....the rear might be a touch too stiff....I plan on loosing the rear sway bar one spot (the looser spot)....if that doesn't work I will disconnect it... My rear ride height is far too high too....the suspension might feel better once I lower the rear
I didn't build this car....I bought it from the guy that built it
From what I understand this is what I have
800lb front 500lb rear on custom Bilsteins (in terms of valving)....heim joints top and bottom....front sway is a "devek" model....rear is stock with adjustable drop links (also known as ott links).....
While the front feels good....the rear might be a touch too stiff....I plan on loosing the rear sway bar one spot (the looser spot)....if that doesn't work I will disconnect it... My rear ride height is far too high too....the suspension might feel better once I lower the rear
04-11-2012, 09:11 PM
#48
Rennlist Member
First of all, most of us are not in the "professional racing world" and sometimes we do things for reasons that might not be optimal for the cars' performance. One of the best reasons for running 4 square, which I do when running drys, is that I'm able to switch tires around to any position and to carry fewer set-ups in the trailer.
Also, you can change corner weights with ride height adjustments. At least on my car you can.
Also, you can change corner weights with ride height adjustments. At least on my car you can.
i was not talking about corner weights, i was talking about weight distribution front to rear or side to side. that is relatively fixed for the most part. ( some subtle changes can be made) diagnals you can change with ride height settings.
04-11-2012, 09:22 PM
#49
Rennlist Member
I have to go with Larry's comment that the advantage of running four tires the same is some cost savings and convenience it is NOT ideal or an advantage. Same with nose heavy it is what is and nothing about is is a good thing.
Given a choice between carrying more weight or going lighter, always chose lighter. Some even use a light weight Chevy motor
Now if he just ran wider rear tires to get all that power down.
Given a choice between carrying more weight or going lighter, always chose lighter. Some even use a light weight Chevy motor
Now if he just ran wider rear tires to get all that power down.I'm already at 335s on 12s. Can't justify spending even more for tires and having to take the rear fenders out even farther.
However, I was considering reshaping all four corners in order to put drop spindles on the car. 928s ride a little high when they have big rubber and getting the car lower to the ground would be a real benefit. The required change to the appearance of the front of the car was just too extreme for my eye. At least for now.
However, I was considering reshaping all four corners in order to put drop spindles on the car. 928s ride a little high when they have big rubber and getting the car lower to the ground would be a real benefit. The required change to the appearance of the front of the car was just too extreme for my eye. At least for now.
i run ride heights of 110mm front and 130mm rear. which is basically slammed. it handles fantastic , as you have seen.
Larry
How are your shocks mounted......I know your suspension is modified.....
928's with stock shocks and stock mounting positions can only get so low before it rides on the bump stops..... For example my widow handled BETTER the more we raised the suspension....since koni's (what was on the car) don't like being near bottomed out.....
My new car has Heim joints all around, top and bottom mounts....with custom bilsteins....it can be SLAMMED to the ground and the suspension will still work....my front ride height when measured at the factory point is 90-95mm.....suspension works great and does NOT bottom out....the springs are 800's but the compression valving on the shocks is STIFF
How are your shocks mounted......I know your suspension is modified.....
928's with stock shocks and stock mounting positions can only get so low before it rides on the bump stops..... For example my widow handled BETTER the more we raised the suspension....since koni's (what was on the car) don't like being near bottomed out.....
My new car has Heim joints all around, top and bottom mounts....with custom bilsteins....it can be SLAMMED to the ground and the suspension will still work....my front ride height when measured at the factory point is 90-95mm.....suspension works great and does NOT bottom out....the springs are 800's but the compression valving on the shocks is STIFF
My rear is custom upper and lowers with a more outboard shock mount on the lower. The front has an "almost" stock lower and custom upper, but with similar shock mounting points. Shocks are Penske doubles with Hypercoils. Heim joints almost everywhere you could put them. But the real limitation is the position of the spindle relative to everything else. Some of the Corvettes use LG custom uprights that let the car drop a little over 1", which is significant.
Is there room in the upper area of the wheel wells to allow for a "slammed to the ground" set-up and still have enough suspension travel? With 335 30 18s all around, I don't think I could get away with it.
I'm on the lift right now and can't do any real measuring (waiting for a steering rack, again). Once we're back on the ground I want to do some accurate measuring and see just how much room there is, cause "lower ain't slower."
Is there room in the upper area of the wheel wells to allow for a "slammed to the ground" set-up and still have enough suspension travel? With 335 30 18s all around, I don't think I could get away with it.
I'm on the lift right now and can't do any real measuring (waiting for a steering rack, again). Once we're back on the ground I want to do some accurate measuring and see just how much room there is, cause "lower ain't slower."
again, my ride hight is 110 front and 130 rear
Hi Brian!
Thank´s for the nice videos.
I´m building a trackcar of a -90 GT 5 speed and are planning to go with similar spring/shock arrangement as you have. Do you remember your shock lenght front and rear? and also i understand that you run 800 pounds springs, I guess in the front, what do you run in the back?
Stock swaybars?
Would appriciate any feedback before putting in my order on shocks and springs...
Jerry
Thank´s for the nice videos.
I´m building a trackcar of a -90 GT 5 speed and are planning to go with similar spring/shock arrangement as you have. Do you remember your shock lenght front and rear? and also i understand that you run 800 pounds springs, I guess in the front, what do you run in the back?
Stock swaybars?
Would appriciate any feedback before putting in my order on shocks and springs...
Jerry
ride height 110 front and 130 rear.
brian is at 110front now and 190mm rear.
com'mon brian lets get that going!!
