Inquiring mind wants to know

[Jack J.]

[Don H.]

Re: Inquiring mind wants to know

This is a real brain twister. But, I'll take a shot. Maybe your jack saddle was not precisely level with your garage floor? Or, the jack was not precisely centered under the exact mid point of the differential? Other than that, I'm stumped.

[Tom L.]

Re: Inquiring mind wants to know

It's pretty simple. There's difference in weight weight between the combined RR & LF wheels compared to RF and LR wheels. In the old days racers used to use this method to insure that there was more weight on the RF & LR pair of tires. A very inaccurate way of measuring what's referred to wedge in oval track racing. Changing wedge is a very common adjustment in oval track racing. Today things are done more accurately with a set of scales. Why there's a difference on your car, I don't know. Good luck!

[Jack M.]

Re: Inquiring mind wants to know

Isn't the engine and driveshaft offset a inch to the passenger side... making L-R weight ratio a tad unequal?

[Gary B.]

Re: Inquiring mind wants to know

Isn't the engine and driveshaft offset a inch to the passenger side... making L-R weight ratio a tad unequal?

I agree with Jack M.

Gary

[Leif A.]

Re: Inquiring mind wants to know

Isn't the engine and driveshaft offset a inch to the passenger side... making L-R weight ratio a tad unequal?

Jack,
I would agree but OP states the "right rear" raised BEFORE the "left rear". With the additional weight bias being towards the passenger (right) side wouldn't that suggest that the left rear would raise before the right rear?

[Mark F.]

Re: Inquiring mind wants to know

assuming the jack pad didn't catch the head of one of the right bolt heads, the plate has a lip all the way around it.
if the right side of the jack pad was on the lip and the left side was inside against the flat part of the plate - that might do it.

I used a piece of 3/4" plywood to span the gap front to back so I would'nt run in to that problem

[Joseph S.]

Re: Inquiring mind wants to know

There are many factors that could cause this. Debri in the control arm area. 1 weak control arm bushing and 1 strong control arm bushing. 1 tight Control arm pivot bolt and 1 loose Control arm pivot bolt. Could be 1 good shock and 1 bad shock since the shock also limits the total amount of control arm travel. There also could be different torque between the 2 left spring bolts and 2 right spring bolts. Could be the orientation of the 1/2 shafts and the UJoints are limiting travel. OK, I'm all out of possibilities at this point.

[Mark E.]

Re: Inquiring mind wants to know

My first thought was a gravitational anomaly. But the above theories are more plausible.

[Tom L.]

Re: Inquiring mind wants to know

Ok, I think that this is likely something that can be attributed to things like... options the car was built with, maybe additions that are not factory, the floor that you're jacking up on being out of level (even just a little bit), the "specific" point that the jack made contact on the diff.... Could be more.

Here's another completely off the wall thought. Seems strange but too many times that I've put racecars on scales it has been proven that adding the driver (aka his weight) to the car takes wedge OUT of the car. Maybe , just maybe these cars were designed, to keep wheel to wheel balance in mind, and there would be ZERO wedge (In eitehr direction) in these cars when the driver is added. I know nothing about factory engineering but I think that this is likley not the case. It's just a "thing". I'd worry more if you intend on road racing. Have fun!

[Bill M.]

Re: Inquiring mind wants to know

Tom good point we always set up the stagger in our sprints and go karts withe the driver in the car.

[Bill M.]