[DeTomaso] body tilt? Mak

[Julian Kift]

Boyd,

 

At the end of the day there are many ways you can achieve the objective, All that is required is reference point or knowing where you are starting and where youy wnat to end up. Commonality of measurement points simply allows comparison to other Pantera's thats all. It sounds like you know him well and understand what he needs, so jump in your Pantera and go help the guy out.....

 

Julian
 


Date: Sun, 16 May 2010 02:15:31 -0400
Subject: Re: [DeTomaso] body tilt? Mak
From: boyd411 at gmail.com
To: julian_kift at hotmail.com
CC: michael at michaelshortt.com; detomaso at realbig.com


His shocks are brand new. So I guess leaks are not impossible but I think it is more likely that the just need to be set up. 
MMeasuring the bumper heights is not dependent on them being the same height to work. The question was hoe to change body rake. If you measure the distance from the front bumper to the ground before attempting any change and you measure the heigt from the rear to the ground be fore any change you can measure the ghange of the front relative to the change of the back. It is a point of visual reference to indicate change in the angle the body is sitting at. The idea is to lower the front relative to the back . This can be acomplished a number of ways . As long as when your done the front is i/2" to 1' lower then the back when your done you will have acheived the increase in forward rake.
If the front bumber is 10" off the ground and the back bumber is 12"off the ground you would want the difference between the two heights to be reduced from two inches to 1/12 to 1 "either all in the back all in the front or split between the two either way you will see an increase in rake which was the goal and the question.If you are happy with your spings and shocks and you are buying new tires you can acheive the change in rake by just buying the right tires..
Boyd


On Sun, May 16, 2010 at 1:27 AM, Julian Kift <julian_kift at hotmail.com> wrote:


I would suggest the best (and normally accepted) way is to measure from the frame rails to floor. Bumpers are varying heights and there is nothing to say the front is the same height as the rear even if the car where neutral (zero rake). The frame rail method will allow cross reference to other Pantera's and it is likely any values quoted will be with repsect to that i.e. a generally accepted 1 inch front down rake I would take to mean that at the front a-arms the chassis rail is 1 inch lower than the rear chassis rail at the a-arms, that is not to say the front to rear bumpers would be 1 inch lower than each other.
 
I would start at the rear and lower the shock ride height to the point the lower rear arm of the rear a-arm is level looking form the rear of the car. This is generally accepetd as a good rear ride height. Then move to the front, here the degree of rake you can achieve may depend on several factors like the height of the tires you are running, fender clearance etc. it's not uncommon to not be able to get a full inch.
 
If the car squats considerably on acceleration, you can adjust the compression setting on your Aldan's. This is going to alter the rate at which they react, not necessarily the overall squat. Do you have the single or double adjustables and what spring rates are you using? Secondly, Aldan's are somewhat notorious for leaking so I woudl recommend a thorough inspection as they may be due a rebuild.
 
Good luck,
Julian 

 
 
>Guys,
>What's the best way to measure car height difference front to back? I want to adjust my rear shocks cause when I hit the
>pedal the back of car "sits" down. I think suspension should be stiff enough where the car doesn't compress the spring upon >acceleration. correct? Likely just have to adjust the Aldan shock pressure? I also understand the car should sit nose down in its >stance? How much of a difference? Thanks 




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