Thread: My 4 corner airbag install

Well yes, I've had the sway bars 'invert' due to the flex now.

But I have also modified the rear spring mounts so that the airbag sits flush (other than a 6mm plate) to the top of the coil sping hanger. ie. I have removed the need of a 20mm spacer to the top of the bag.

Obviously this has given me 20mm up travel back, which leaves about 5-10mm less up travel than what the original bumps stops were giving me.

It has also noticably reduced body roll (not that it was bad). ie for same height I now have stiffer settings, or vice versa, with same spring rate I now have lower body.

I most likely will convert my front from the same airbags to the original Dunlops from a classic range rover. The spring perches in the front are too narrow to allow the 20mm spacer to be removed as in the rear, and I want my up travel back (Isuzu's already have 20mm reduced)/I know it will improve handling (once again not that it is now bad) a little more.

Would I recommend fitting airbags - you bet ya! My ride is so so nice and smooth

Originally Posted by the_grubb

...

I most likely will convert my front from the same airbags to the original Dunlops from a classic range rover. The spring perches in the front are too narrow to allow the 20mm spacer to be removed as in the rear, and I want my up travel back (Isuzu's already have 20mm reduced)/I know it will improve handling (once again not that it is now bad) a little more.

Would I recommend fitting airbags - you bet ya! My ride is so so nice and smooth

I'm guessing that RRC or disco II rear air springs may have a longer travel range than rrc fronts. So is it possible/practical to use rrc or disco II rear air springs in the front?

Sheldon, i have a set of front and rear RRC air springgs, i can measure for you, thats if your ever back on here

Vern, I would be interested in those measurements for rear RRC airsprings, full extended length, closed length, inflated diameter of the bellow, top and bottom mount diameter and pics if possible please?

probably can't do the inflated diameter, they are out of the car. Will get the rest though

Originally Posted by Bush65

You have that clearance because your air springs are considerably smaller diameter than what Tony and others are using.

I've used similar dia to you in my old rangie, but have the larger ones for my 110/120 when I get time to return to it.

Just digging this up as I'm considering the conversion and choosing what springs..

Why would you prefer the larger bags in a 110 John? are they stronger? I would prefer not to use spacers and limit up travel if I can get away with it.

I'm collating the info on the stock RRC EAS bags at the moment. I'll have mine out for replacement and measureup shortly.
It appears P38 and RRC bags are basically length variations on the same theme.

Originally Posted by flagg

Originally Posted by Bush65

You have that clearance because your air springs are considerably smaller diameter than what Tony and others are using.

I've used similar dia to you in my old rangie, but have the larger ones for my 110/120 when I get time to return to it.

Just digging this up as I'm considering the conversion and choosing what springs..

Why would you prefer the larger bags in a 110 John? are they stronger? I would prefer not to use spacers and limit up travel if I can get away with it.

The Firestone air springs I had in my rangie were an unknown assembly number (the supplier removed the stickers), but are damn near the same as Firestone W01-D08-9310 (1T26D-7 bellows), with only a small difference in the top crimp plate. Their minimum compressed height (6") and maximum extended height (21") are good, but for the loaded weight of a 110, I'm not happy with the pressure at operating height - if using a largish operating height , the pressure when compressed to near minimum height is getting too high IMHO.

Where I used similar diameter to the_grubb, my reply was a bit too hasty, because on further checking the springs I used were smaller. So please don't take my comment to imply that the diameter of the Firestone W02-358-9901 are too small, because they are not.

The W01-D08-9310 has a 4" piston, where the W02-358-9901 has a 5" piston.

Other Firestone air springs that use a 1T14C-7 bellows also have 5" pistons, that enlarge further when as the spring is compressed. This and the method that the top is sealed (crimp plate) make them larger compared to the W02-358-9901. These (1T14C-7) are too large for the stock, front spring perch. Also the enlarged piston diameter requires a high force to compress them, which affects articulation. To address this I want to make some different pistons, but don't have time.

I'm in two minds about using the W02-358-9901 air springs instead - what I dislike with them is the crimp band that they use to hold the bellows to the top plate and piston, compared to the more reliable (IMHO) crimp plate at the top and bonded closure at the bottom of the 1T14C-7 bellows. You have all heard about leaking air springs in Land Rover air suspensions - they all use crimp bands.