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qu about hydro
https://www.ausmini.com/forums/viewtopic.php?f=2&t=31179		 Page 1 of 2
Author:  mooman10_0 [ Fri Apr 27, 2007 5:53 pm ]
Post subject:  qu about hydro
The front of my cooper s replica sits alot lower than the back (the front is very close to the wheels), there are no leaks in the system and it all feels springy when you bounce each corner.

Qu is what will fix this? I have a pump up unit, will simply pumping it up fix the problem? Or does something need tinkering? Just wanting to get it right before putting it on the road! :D
Author:  Mini Mad [ Fri Apr 27, 2007 5:55 pm ]
Post subject: 
The rear helper springs have probably stretched/saggy - they pull the rear down to keep it level.
Author:  mooman10_0 [ Fri Apr 27, 2007 5:56 pm ]
Post subject: 
Could it be anything else or this the only cause? And how much do they set you back? :D
Author:  9YaTaH [ Fri Apr 27, 2007 6:35 pm ]
Post subject:  Normal??
They are all slightly lower at the front....check your helper springs by all means but I would be pumping it up a bit higher and letting it settle :idea:
Author:  Morris 1100 [ Fri Apr 27, 2007 7:47 pm ]
Post subject: 
My guess is that the rubber springs in the front displacers have sagged from the weigh of the engine.
Swap the displacers front to rear.
Or Add packers between the displacer and the ball foot.

One other possible reason is that the car is lowered by letting out fluid. As the car is lowered the front will sink more than the rear (the rear sits where it sjhould and the front is low. The height between the centre of the wheel to the wheel arch should be 13¼" or 336mm (with a ¼ or 6.4mm tolerance)
Author:  drmini in aust [ Fri Apr 27, 2007 7:58 pm ]
Post subject: 
I pump mine up to 3 fingers between the 165/70-10 Yokie, and the front wheelarches.
It sits pretty level, maybe because I run S/GT displacers in front and Minimatic/Mini K in back. 8)
Author:  mooman10_0 [ Fri Apr 27, 2007 11:03 pm ]
Post subject: 
how hard is it to swap displacers?
Author:  Spaceboy [ Fri Apr 27, 2007 11:45 pm ]
Post subject: 
hydro minis are always lower at the front for some reason
Author:  smac [ Sat Apr 28, 2007 6:41 am ]
Post subject: 
When you say 'bouncy' what do you mean? You got air in there maybe?
Author:  drmini in aust [ Sat Apr 28, 2007 6:43 am ]
Post subject: 
They do sit a bit higher at the back, this is so you can actually carry fat chicks etc in the back seat. :lol: Also a full load of fuel (50L) drops it a bit.
BTW, 99% of the Cooper S's race and rally successes in the 60s were with hydro cars, so don't say they don't (or can't be made to) handle. :wink:
Author:  mooman10_0 [ Sat Apr 28, 2007 7:48 am ]
Post subject: 
Ok , Just took some measurements and the rear is at about 13 and a bit inches from centre of wheel to arch, and the front is on 11inches, nearly hitting the wheel :?
If I pump it up, is this going to make front and back rise? or just the front?
Author:  mooman10_0 [ Sat Apr 28, 2007 7:50 am ]
Post subject: 
Bare in mind I am doing a complete brake swap from drum to disc in a couple of weeks, should I simply swap to dry suspension or is this to hard?
Author:  mooman10_0 [ Sat Apr 28, 2007 8:00 am ]
Post subject: 
Would prefer to keep it hydro
Author:  drmini in aust [ Sat Apr 28, 2007 8:10 am ]
Post subject: 
I'd leave it hydro. I find the displacers last longer than the rubber cones do.. and they have no alloy front trumpets to rot out either.
If you want to improve handling a bit, fit a set of standard front shocks, and replace the old rear bump stops with competition ones. :wink:
Good idea to drain the old fluid out and pump some fresh stuff in.
Author:  gafmo [ Sat Apr 28, 2007 8:29 am ]
Post subject: 
13 3/4" sounds High...I have 11 1/2" on the rear and 11" on the front...I know mine needs pumping up but I would not go to 13 3/4"...it would look like old man emu :lol:
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