AHC with LC Springs & Bars

[mattafact]

When you put the new springs in do you have to adjust the AHC in any way or does it figure it out on its own?

 

[TeCKis300]

See post #2 by sonk

Thanks for pointing that out.

 

[mattafact]

When you put the new springs in do you have to adjust the AHC in any way or does it figure it out on its own?

Anyone?

 

[Wilsil]

From what I understand of the system is that it doesn't need any adjustment.
With different spings, more weight is taken from the AHC meaning the system doesn't need to work that hard.
You might need to reduce the torsion bar tension, but not sure.

 

[1meancruiser]

I measured the thickness of the used LC100 coils and the LX470. The LC100 are around 16.5 mm thick, the LX470 around 12.3mm. I read somewhere that there is a difference in left and right and I am sure it is easy to see with new coils. What about used ones? Which is which? I couldn't see a stamp or marking, although one had some white marking.

The Spring with a higher coil count goes on the driver side, because of the higher constant weight of the driver inside the car.

In the 80 series springs, the taller spring goes on the driver side. The 100 series springs are both the same height, but one has a higher coil count than the other.

 

[Wilsil]

Thanks, that's is very helpful.
Now I need to count them tonight.

 

[AutoCraft Aus]

Move the rear electronic adjusters to the top of the slide.

Remove the front adjuster all thread sections and cut them 6mm shorter, then re install and adjust to minimum length.

Use a 20mm "towing" rear coil for 0-20mm lift.

Set ride height on N with stock Toyota non AHC T bars to be 760mm on 17" rims from bottom edge of rim to fender front.

Rear should be 800-805mm.

The above adjustments will give the vehicle a 40mm lift, which you have to have to make the shocks firm and within pressure, for the ride height.

These heights wont be over stressing the down travel, or topping the shock out either.

Then you will have std height on L

you will have 40mm lift on N

You will get another 40mm on H.

 

[gunnarb]

I recently installed the Air-Lift air spring inside the standard lc100 AHC coils so now I can “pump it up” when I need to carry extra load. I haven’t tried it much with extra heavy load or the trailer but I hope it will do the job.
I had a methane gas conversion which added aprox 250 kg to the rear and the AHC could not handle 2 passengers in the rear and a small luggage.
I wonder if you who have replaced the rear coils did remove the rubber follow-up spring inside the coil. Is there any need for it once you have the non ACH coils?

 

[Wilsil]

I counted the "coils" and ened up the same for both: 8.5 starting at the bottom point.

 

[Wilsil]

After some searching on toyodiy, I found that the coils for AHC models are the same. They have the same part number.

 

[mattafact]

After some searching on toyodiy, I found that the coils for AHC models are the same. They have the same part number.

They're the same as non ahc coils or are all ahc coils the same?

 

[Wilsil]

No. What I mean is that coils for an AHC car do have the same part number for that model/year.
I have been given non-AHC coils from a 2003 Toyota LC100 V8 Sahara, and even that model without AHC has the same part number for the left coil and the right coil.

 

[hoser]

Wilsil, our LHD 100's have the fuel tank, driver and battery all on the same side. RHD 100's would still have the fuel tank and battery on the same side but the driver offsets it on the other side. So maybe that is why our springs our uneven and RHD 100's are the same.

 

[Wilsil]

Could be, plus we have the auxiliary tank in the middle as well.