Polybush leaf springs

Rebuilding, adjusting, maintaining & alternatives
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Jamiexr2
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Scotland
Posts: 14
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Location: Troon

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Polybush leaf springs

Post by Jamiexr2 »

I've bought new springs from ESM and will be changing them soon. I got the Lowering kit with poly bushes including shackle bushes too. Question is.
None of the bushes have a centre spacer.
Is this normal?
Thanks



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Custard
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Ireland
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Location: Blackpool

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Re: Polybush leaf springs

Post by Custard »

Yes it is normal.

If you swap the ones on the torsion bar eye bolt and the kingpin they are the same.

I thought it odd at first as I had the centre tube on the Locost Kit Car, but the design of the bolts with steps means the bush will never be crushed to the point of cutting the lip off.

Everywhere I have had a bush with a tube in it has been to prevent that crushing.

A bit of white grease helps fitting too!.

Sean.



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Jamiexr2
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Scotland
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Location: Troon

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Re: Polybush leaf springs

Post by Jamiexr2 »

Cheers for that. 👍



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philthehill
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Re: Polybush leaf springs

Post by philthehill »

The Austin J4 suspension bush is ideal for the front eye of the Minor spring. You just have to trim it so that it is slightly longer than the shaft of the pin so as to ensure that it is nipped tight. A well known mod before the advent of poly bushes.
It has the centre tube so cannot be crushed.

https://www.ebay.co.uk/itm/AUSTIN-MORRI ... SwLc9fVPtb

Here is a pair I did for my Minor.
Rear spring front eye bushing..JPG
Rear spring front eye bushing..JPG (225.07 KiB) Viewed 50 times
Rear spring front eye bushing..JPG
EXIF-Data show/hide
Original image recording time:
2020:12:29 14:55:59
Image taken on:
Tue Dec 29, 2020 2:55 pm
Focus length:
3.3 mm
Shutter speed:
1/33 Sec
F-number:
f/2.4
ISO speed rating:
100
Whitebalance:
Auto
Flash:
No flash function
Camera-manufacturer:
Apple
Camera-model:
IPad Mini 4
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern
They can be fitted to the rear spring/chassis eyes as well. Also the front suspension eye bolt. They are near enough fit and forget.



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Panky
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United Kingdom
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Location: Cheshire
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Re: Polybush leaf springs

Post by Panky »

Thanks for this Phil. It looks like I'll be renewing the front eye bolts so I'll fit these when the time comes.


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