Is the GT3 Ride Height Adjustable?
#16
Rennlist Member
Nah...lowering is and has been a performance oriented modification since the beginning of suspensions. Factory height is designed to balance performance, comfort, and aid in people not ripping the front bumper off. Lower the car, align, and I guess corner balance and you are good to go. Although to actually corner balance the car you'd need to add sand bags to offset the driver.
The following users liked this post:
solidwater (06-27-2024)
#17
Rennlist Member
I lowered my GT3 and never bothered to have it aligned for the first set of tires. The car was fine. The RS sits much higher in the front from the factory, so I'll be heading to align. We'll throw it on the scales for fun and I guess corner balance it. Although, in my experience that never does much, especially on a car with a 35/65 weight distribution.
#18
Race Director
Originally Posted by Biff_Malibu
When adjusting height it should be done in the context of corner balancing. Simply raising and lowering based on tape measure measurements is unwise.
To date I have corner balanced and aligned all of my GT3s. Significant difference in handling.
To date I have corner balanced and aligned all of my GT3s. Significant difference in handling.
#19
Rennlist Member
I just took mine to get aligned and "corner balanced" today. I have always spent extra time measuring heights of both the actual coilover body then confirming by comparing the fender heights to get them close to where I want. I think it's pretty common knowledge that most set-ups end up with some rake rear to front due to rear engine position. It's about cross weights not front to rear weight distribution. Put the car on scales. You'd take the weight of the front left and rear right and vice versa to get a comparative distribution with you sitting in the driver's seat. The goal then would be to adjust the height or possibly sway bar stiffness to get the crossweights to equal 50%. Well...I've put about a dozen cars on scales over my 38 years on this earth, all of them ended up measuring within 2% of 50. The RS measured 49.75% without me in the car, then 51.2% with my 238lb rear end in the driver seat. I chalked it up to go to go. So as usual, we put the car on scales just for the fun of seeing how much the car weighed, 3354 with a full tank of gas. The whole corner balancing magic has largely been a waste of time and money for me.
#20
Addict
Rennlist Member
Rennlist Member
You still end up with 35/65 front rear split, or whatever it is now...
A properly corner-balanced car is faster and nicer to drive.
#21
Platinum Dealership
Rennlist
Site Sponsor
Rennlist
Site Sponsor
By angling the chassis (Rake) you control the "surge" effect of braking or the ability of the car to turn at various speeds.
General rules:
Lower nose= less air underneath the nose so it has more direct initial turn in.
Front vs rear ride height= the more rake the more the rear will rotate, for high speed stability you drop the rear 5mm or so. Very small adjustments here make huge differences
The rear steering masks a lot of the old problems inherent in track setup for a GT3/RS.
But the proper rake and nose height makes the car more reactive to the wheel. You also have to coordinate the sway bars to make sure that the rear grip is not overly compromised.
General rules:
Lower nose= less air underneath the nose so it has more direct initial turn in.
Front vs rear ride height= the more rake the more the rear will rotate, for high speed stability you drop the rear 5mm or so. Very small adjustments here make huge differences
The rear steering masks a lot of the old problems inherent in track setup for a GT3/RS.
But the proper rake and nose height makes the car more reactive to the wheel. You also have to coordinate the sway bars to make sure that the rear grip is not overly compromised.
#22
Drifting
Are the stock sways on the GT3 cars adjustable?
#23
Addict
Rennlist Member
Rennlist Member
#24
Rennlist Member
taking mine directly from Stuttgart to Manthey Racing to get their magic applied!
#25
Rennlist Member
Does anyone have the factory spec for ride height measurements on a 991.1 GT3? Thanks, Cheers, Andi
#26
Race Director
By angling the chassis (Rake) you control the "surge" effect of braking or the ability of the car to turn at various speeds.
General rules:
Lower nose= less air underneath the nose so it has more direct initial turn in.
Front vs rear ride height= the more rake the more the rear will rotate, for high speed stability you drop the rear 5mm or so. Very small adjustments here make huge differences
The rear steering masks a lot of the old problems inherent in track setup for a GT3/RS.
But the proper rake and nose height makes the car more reactive to the wheel. You also have to coordinate the sway bars to make sure that the rear grip is not overly compromised.
General rules:
Lower nose= less air underneath the nose so it has more direct initial turn in.
Front vs rear ride height= the more rake the more the rear will rotate, for high speed stability you drop the rear 5mm or so. Very small adjustments here make huge differences
The rear steering masks a lot of the old problems inherent in track setup for a GT3/RS.
But the proper rake and nose height makes the car more reactive to the wheel. You also have to coordinate the sway bars to make sure that the rear grip is not overly compromised.
Thanks!
#27
#28
Race Director
#29
Race Director
I lowered my GT3 and never bothered to have it aligned for the first set of tires. The car was fine. The RS sits much higher in the front from the factory, so I'll be heading to align. We'll throw it on the scales for fun and I guess corner balance it. Although, in my experience that never does much, especially on a car with a 35/65 weight distribution.
https://youtu.be/bwbXk4NzQlQ
https://www.youtube.com/edit?o=U&video_id=BvpfCghtnx8
https://youtu.be/bwbXk4NzQlQ
https://www.youtube.com/edit?o=U&video_id=BvpfCghtnx8
#30
Platinum Dealership
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Originally Posted by mdrums
Any rule of thumb, basic ride height and rake tips for a GT3 .2? I prefer a neutral car and one that keeps the rear end from hanging out. I'm better at dealing with understeer (push) at the track than over steer (loose) feeling car.
Thanks!
Thanks!
Personally I like the looser car set up because the rear steering negates a lot of rotation at higher speeds.
What I really dislike is a car that rolls and dives too much...the 675LT has spoiled me.