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Old 10th January 2010, 09:37 AM
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twinturbo twinturbo is offline
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Default Upright machining?

Does the front upright need machining for the bottom ball joint?

Who can do this?

Has anyone tried usink the MK2 astra one as I belive it has the correct taper.

TT
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Old 10th January 2010, 09:56 AM
flyerncle flyerncle is offline
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Ream it by hand, Axminster do the reamer for pennies.
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Old 10th January 2010, 09:58 AM
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Yes the bottom ball joint holes needs reaming out to take the maxi ball joint. Axminster tools do the reamer for less than £10. Not sure about using FWD Astra uprights as it might be more trouble than it's worth moding them to remove the CV cup from the drive flange? MX5 uprights are very simular to Cortina uprights and the Maxi ball joint is a direct fit. How ever you still need to ream the top holes to take the transit drag link, so you still need to ream them but save the cost of the mushrooms and their lighter.
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Old 10th January 2010, 10:01 AM
flyerncle flyerncle is offline
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He's talking about the astra ball joint I think and not the complete hub.geometry would be totally different with GM parts.
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Old 10th January 2010, 10:10 AM
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Anyone got a link to this reamer?

I did mean the astra bottom ball joint, it has the same taper as the sierra.

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Old 10th January 2010, 10:15 AM
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Cheap as chips, and do the job superb..
http://www.axminster.co.uk/product.a...sfile=1&jump=0

Take care though, easy to over do it.
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Old 10th January 2010, 10:28 AM
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And the taper is correct on those?

Which one is correct the 19mm or 12mm??

TA

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  #8  
Old 26th February 2010, 11:36 PM
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1992 - 1995 Cavalier has exact same taper/pin dimensions to the one in the Sierra TCA. I used it on a previous project years ago though it would require a slight redesign of the lower wishbone.

As for hand reaming the taper I'm guessing the hand reamer has the same 14°taper as the ball joint but how can the hand reamer be accurately controlled to prevent it 'wobbling' as you ream? I didn't think this type of tool was for reaming such a deep hole with required level of accuracy.
I thought it was for de-burring holes and providing 'lead' in to holes

BV.
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