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Home > Help Needed / General Tech Chat > Top adj hi/lo allan key size

Dangerous

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Swindon

17th Oct, 2005 at 03:39:40am

Any idea what size allan key they use on the type that adjusts through a hole in the large front subframe mount bolt

Thinking about modifing my ones to this type*oh well*


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turbodave16v
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SouthPark, Colorado

17th Oct, 2005 at 04:20:07pm

Pretty sure it's 3/8ths.

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Dangerous

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Swindon

17th Oct, 2005 at 04:45:37pm

I've drilled the bolts to 9.8mm to clear 8mm key The thread is 18.8mm and the bit above that is 17.9mm

If I go out to clear a 3/8 key hole size will be 10.8mm

will it be ok with 3.5mm wall thickness on the main subframe mount bolts seems a bit thin to me


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Tom Fenton
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Rotherham South Yorkshire

17th Oct, 2005 at 04:49:07pm

I thought the original type hilo's were used on the earlier cars that used the solid mounted subframes, attached by the towers by 2 off 5/16" bolts. This left a big hole through the middle, usually plugged up with a grommet, but perfect for access to the hilo adjuster.
With the post-76 cars that used the large bolt, came the later style hilos that use the adjusters that you turn with a spanner.
I can't see why you want to change yours over? As you have to jack car up and remove wheel to loosen locking half nut before you can adjust them anyway?


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turbodave16v
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SouthPark, Colorado

17th Oct, 2005 at 06:38:47pm

Advantage is that you don't have to lift the car off the scales to adjust...

I'd always go for the older version.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Dangerous

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Swindon

17th Oct, 2005 at 06:47:16pm

Jims got it done on his car,I thought he was taking wieght saving a bit far drilling the bolts

Then rememberd he changed the suspention a while back

Think I will stick with a 8mm key


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wolfie

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Somewhere around Swindon

17th Oct, 2005 at 08:12:09pm

minispares used to sell drilled out subframe bolts

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Jimster
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Sunny Bridgend, South Wales

18th Oct, 2005 at 09:15:17am

I drilled my bolts out on the lathe, as dave says, it makes it much eaiser when doing the corner weights.


In the photo above you can see what I mean with the 'T' Bar for the hilos on the near side front hilo, the tower bolt is still in place.



Here you can see that the corner weigths are quite a bit off, these were done only a few weeks before.

This weight is with me sitting in the car (86kg's) and a full tank of fuel

Edited by Jimster on 18th Oct, 2005.

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On 15th May, 2009 TurboDave said:
I think the welsh one has it right!


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