4.8is Ride Height Calibration - Page 6

Ricky Bobby · #51 07-01-2013, 09:00 AM

I may have to redo it once more, I put it to "access level" yesterday when I parked at the mall LOL and I notice in my garage yesterday I am sitting about a quarter to 3/8 higher now, is this just a by product of the driving around I did and the suspension "re-settling?"

If so I will redo the calibration once more, set it a bit lower than I would normally want it, and expect a somewhat higher "settlement height" after driving. I was about 705mm last week, its probably almost at 715mm now give or take a few mm.

EDIT: Will be borrowing a friends GT1 tonight and calibrating again, then after driving I will measure again, it seems the suspension does have a tendency to settle itself after driving which may have been my error (looked great sitting in the garage on all 4 corners but I didn't drive to let it adjust itself, after a few days of driving and playing with the access level while parking it seems to have settled slightly higher than what it was the other day.

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bcredliner · #52 07-01-2013, 12:09 PM

Yes, to be sure your X is sitting level you need to at least drive back and forth a few feet and stop abruptly each time and do so each time you make a single change. Better yet around in tight circles at good rate of speed and then drive back and check again. Make sure all your tires are inflated to the same pressure.

The alignment will change so you should get that checked when you are done.

Ricky Bobby · #53 07-01-2013, 12:26 PM

Sounds like fun, I'm trying to get this shit right so that I can get my alignment and have the corners all even! So is that a normal thing after driving around for the suspension to "pop up" a bit

(i.e. should I set it a bit lower in anticipation of the suspension raising somewhat after driving around?)

bcredliner · #54 07-01-2013, 01:10 PM

If you lower a corner to the height you want and then drive it the height should decrease more than it did before the driving. The converse is true. It may be that when you lower the right front it is raising the left rear but the amount you are changing it would be very very little if at all. You can test that by dropping the left front a few lbs. and see if the right rear height increases.

Your X should have been in alignment when you started process.

If you are trying to get it exact you will be at it a long time and the first time you do something that changes the camber it will change ride height. It is very hard to tell it is not level unless you are out more than a half inch and the alinement after will likely will close that gap. If I get mine a little over or under 1/2 inch it is good enough for government work and it looks level to me, though I am cross eyed in one eye.

If you are lowering the height and after driving it is higher, I don't know what that could other than perhaps if you are checking height with engine off the pressure increases when the engine is on.

Ricky Bobby · #55 07-01-2013, 01:31 PM

Quote:

Originally Posted by bcredliner

If you lower a corner to the height you want and then drive it the height should decrease more than it did before the driving. The converse is true. It may be that when you lower the right front it is raising the left rear but the amount you are changing it would be very very little if at all. You can test that by dropping the left front a few lbs. and see if the right rear height increases.

Your X should have been in alignment when you started process.

If you are trying to get it exact you will be at it a long time and the first time you do something that changes the camber it will change ride height. It is very hard to tell it is not level unless you are out more than a half inch and the alinement after will likely will close that gap. If I get mine a little over or under 1/2 inch it is good enough for government work and it looks level to me, though I am cross eyed in one eye.

If you are lowering the height and after driving it is higher, I don't know what that could other than perhaps if you are checking height with engine off the pressure increases when the engine is on.

Totally understand and thanks for the tips, I figured when the suspension settles the height should be slightly lower, kind of funny how mine popped up a bit. I understand I can't get it exact but I may play with it further in anticipation of it going up slightly, like I said last week it was just about 3/8" lower after calibrating. So I might put it down 3/4" in anticipation of it coming up 3/8" if that is what the normal "settled height" is that I currently have going on.

bcredliner · #56 07-01-2013, 01:51 PM

Sounds good!

TwinsPoppa · #57 07-01-2013, 08:31 PM

If its any consequence, I NEVER had mine exactly level. Its probably because I could never be sure I was on a perfectly level surface. Weasel told me its okay to be within a certain tolerance. I think it was 1/4"-1/2". I can't remember.

Ricky Bobby · #58 07-02-2013, 09:44 AM

Quote:

Originally Posted by TwinsPoppa

If its any consequence, I NEVER had mine exactly level. Its probably because I could never be sure I was on a perfectly level surface. Weasel told me its okay to be within a certain tolerance. I think it was 1/4"-1/2". I can't remember.

All my corners for the most part are within a 1/4" which I am happy about, it was weird how after driving a few days I seem to have settled slightly higher than what I set it at last week.

I have been doing your "set the zero point" method Twins and it works easily for the most part, basically click, see where it settles, measure, and either set the axle or raise/lower till it is where you want it.

I'm a hair above the spec for stock 4.8is height now (715mm), might have a fellow member over next week to do his fog light bulbs on his newly acquired E70, he has GT1 so I may lower slightly again then

bcredliner · #59 07-02-2013, 10:18 AM

I have the attached links on the rear of my X. This would be an easy way to lower your X and never have to mess with it again. You would still have the capability to lower it even more with the method you are using.
Discovery 3 4 Air Suspension lowering Links Module | eBay

bcredliner · #60 07-02-2013, 10:19 AM

I have the attached links on the rear of my X. This would be an easy way to lower your X and never have to mess with it again. You would still have the capability to lower it even more with the method you are using.
Discovery 3 4 Air Suspension lowering Links Module | eBay

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