Fuel Safe Systems

Visit our community sponsor

Thanks Thanks:  1
Likes Likes:  0
Results 1 to 11 of 11

Thread: Ride Height

  1. #1
    Senior Member JOP33's Avatar
    Join Date
    Dec 2016
    Location
    Haslet, Texas
    Posts
    520
    Post Thanks / Like

    Ride Height

    The manual states that the ride height in the front is 4.5" in the front and 5" in the rear. It then states measured from ground to chassis. Is that at the chassis box or the lowest point of the chassis at the front of the car and the highest point of the chassis at the rear of the car?

    Thanks
    33' Hot Rod Coupe/Roadster, Fendered, Ford 302, 350hp, EFI, AOD, 4-Link, Double Adjustable Koni Coilovers, Split Rear Exhaust, Electric Power Steering, AC/Heat/Defrost, Moser 8.8"-3.55, Willwood Front/Rear Brakes, 18" x 8" Fronts/20" x 10" Rears, Ordered: 1.26.17, Arrived: 3.29.17, First Start: 7.2.18, Go Cart: 11.4.18 Paint/Body: 2.23.19

  2. #2
    Senior Member RoadRacer's Avatar
    Join Date
    Oct 2011
    Location
    Manor, TX
    Posts
    802
    Post Thanks / Like
    Of course, it's kind of a dumb measurement to quote (even that rake), since the wheels/tires you choose can alter the ride height significantly. So.. it doesn't really matter what you start at, as long as it's consistent side-to-side and you're happy
    Aerodynamics are for those who can't build engines - Enzo Ferrari

    FFR33 coupe #997, ordered 2/20/17, delivered 4/15/17, build thread
    Planned: 350SBC, TKO600, hardtop, no fenders/hood, 32 grill, 3 link, GT500 wheels

  3. Thanks JOP33 thanked for this post
  4. #3
    Senior Member
    Join Date
    Feb 2011
    Location
    Loveland, CO
    Posts
    257
    Post Thanks / Like
    I think it is from the 4 corners of the cab structure before it starts to bend upward, front or rear. Yes, wheels and tire matter, but isn't height still height from ground?
    Ralph

  5. #4
    Senior Member
    Join Date
    May 2016
    Location
    North of sacramento Ca.
    Posts
    685
    Post Thanks / Like
    Just + or - the height difference from FFR tires to the ride height.

  6. #5
    Senior Member AJT '33's Avatar
    Join Date
    Aug 2013
    Location
    Gatineau, Quebec, canada
    Posts
    436
    Post Thanks / Like
    Quote Originally Posted by JOP33 View Post
    The manual states that the ride height in the front is 4.5" in the front and 5" in the rear. It then states measured from ground to chassis. Is that at the chassis box or the lowest point of the chassis at the front of the car and the highest point of the chassis at the rear of the car?

    Thanks
    Its measured at the four corners under the four corners of the main frame under the seating/cab area. As mentioned below what is in the manual is a guide. I found that my rear shocks were wrong and once I installed the correct ones my front measurement is ~6" and the rears are at ~7-5/8". It has a nice rake now.
    20181208_185822[1].jpg 20181208_190654[1].jpg
    These were recently taken, its hard to see but its a nice rake now.

  7. #6
    Senior Member
    Join Date
    May 2017
    Location
    Kingsland, TX
    Posts
    147
    Post Thanks / Like
    Blog Entries
    1
    Quote Originally Posted by AJT '33 View Post
    20181208_185822[1].jpg 20181208_190654[1].jpg
    These were recently taken, its hard to see but its a nice rake now.
    That sits nice! What are your wheel/tire specs?
    -- Mike --
    TxMike64
    TxM Garage

  8. #7
    Senior Member AJT '33's Avatar
    Join Date
    Aug 2013
    Location
    Gatineau, Quebec, canada
    Posts
    436
    Post Thanks / Like
    Quote Originally Posted by TxMike64 View Post
    That sits nice! What are your wheel/tire specs?
    Front: Wheels PhatFUX 18x9 with Nitto 555 G2 245/40ZR18 Tires
    Rear Wheels PhatFUX 18x10 with Nitto 555 G2 295/40ZR18 Tires
    One cool thing is my tire guy installed flush air valves. As well I needed to add in 21mm spacers as well for clearance with this setup due to the backspace.
    20180504_140855.jpg 20180426_184745.jpg

  9. #8
    Senior Member
    Join Date
    May 2017
    Location
    Kingsland, TX
    Posts
    147
    Post Thanks / Like
    Blog Entries
    1
    Thanks!
    That front/rear size combo looks great! The rear tires do indeed look phat!
    -- Mike --
    TxMike64
    TxM Garage

  10. #9
    Senior Member AJT '33's Avatar
    Join Date
    Aug 2013
    Location
    Gatineau, Quebec, canada
    Posts
    436
    Post Thanks / Like
    Quote Originally Posted by TxMike64 View Post
    Thanks!
    That front/rear size combo looks great! The rear tires do indeed look phat!
    Now that I have the correct rear shocks I could have gone an up to an inch wider if I wanted.

  11. #10
    Junior Member
    Join Date
    Aug 2016
    Posts
    24
    Post Thanks / Like
    Yes, measure from 4 corners but the 4 1/2" and 5" was way to low for mine. I think i am at 6" rear and 5 1/2" front

    20180422_140653 (1).jpg

  12. #11
    Seasoned Citizen NAZ's Avatar
    Join Date
    Feb 2016
    Location
    "The High Country", beautiful Flagstaff, AZ
    Posts
    1,109
    Post Thanks / Like
    If you're going for a cool looking stance and not concerned about handling, then set your ride height where it looks best and still has reasonable road hazard clearance. But if handling is important to you just realize setting ride height arbitrarily will likely have adverse handling effects. And I'm not just talking about center of gravity changes.

    Changing ride height in the front affects roll center and lateral weight transfer (also affects rear roll center on IRS cars) but changing rear ride height on a solid axle car can change your instant center which affects acceleration / braking traction. Not considering this can make a car harder to hook or easier for the rear tires to lock on hard braking -- a real problem when hard braking in a corner or picking up the throttle on corner exit.

    It can also create roll steer, a very annoying trait. As the car leans in a corner (weight transfer) the rear axle is skewed and results in an uncommanded turning input, the direction is dependent on which way the LCAs are angled. When you're done setting your rear ride height measure the angle of the LCA and if they are not parallel to the ground you have just induced roll steer. The degree of which is dependent on the amount of angle -- more angle = more roll steer. So you should really consider how your ride height adjustments are affecting handling. Ideally you want the LCAs parallel to the ground. Drag racers will many times set these with the front angled uphill to adjust instant center higher to adjust anti-squat but corner handling is not a priority to them.
    33 Hot Rod Super Pro Drag Racer
    33 HR NHRA Cert Roll Cage Build

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Replica Parts

Visit our community sponsor