Now my hand reamer has arrived i'm all set to enlarge my shock absorber bracket holes to allow for 1/2 inch bolts. I've tested on a spare bracket I had and it works well.

I have a problem though - the front upper shock bracket holes can't be accessed squarely with the reamer as there are chassis rails within 50mm front and back - see pic below ('borrowed' from Ronnie on the Haynes forum) - you can see the rails either side.

Any locost ideas for how best to tackle this?

http://i274.photobucket.com/albums/jj266/Bonzoronnie/RedChassis.jpg



[Edited on 6/1/19 by jps]

[Edited on 6/1/19 by jps]

What size are they currently?

I would leave the hole alone and use a sleeve or top hat spacers depending on what the differance is. Or change the crush tube or bearing in the shock.

quote:

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Originally posted by daviep
What size are they currently?

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I'd just use a file or rotary file for those

quote:

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Originally posted by ReMan
I'd just use a file or rotary file for those

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Some of my reamers have been shortened and a nut welded on the end.
They will go anywhere the bolt will go.

If you can get the reamer started in the bracket you may get away with using mole grips to turn it bit by bit.

I can't believe it is almost 10 years since I built that chassis

Sadly still under wraps in one of my sheds.
Bet it no longer resembles that picture.

I know it's not of any help with your question.
When I bought my shocks, I had sleeves fitted to them to use M12 bolts rather than 1/2".

When I made my chassis suspension brackets I drilled them to 12.1mm as at the time, I thought .5mm clearance was too generous

I guess if I had to enlarge the holes a tiny bit, I would turn to my right angled die grinder & stone