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-   -   Upright machining? (http://www.haynes.co.uk/forums/showthread.php?t=3429)

twinturbo 10th January 2010 08:37 AM

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.


flyerncle 10th January 2010 08:56 AM

Ream it by hand, Axminster do the reamer for pennies.

Talonmotorsport 10th January 2010 08:58 AM

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.

flyerncle 10th January 2010 09:01 AM

He's talking about the astra ball joint I think and not the complete hub.geometry would be totally different with GM parts.

twinturbo 10th January 2010 09:10 AM

Anyone got a link to this reamer?

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


dogwood 10th January 2010 09:15 AM

Cheap as chips, and do the job superb..

Take care though, easy to over do it.

twinturbo 10th January 2010 09:28 AM

And the taper is correct on those?

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



Talonmotorsport 10th January 2010 09:33 AM

Silly me. You'll need the 19mm reamer as the taper is 14-16mm if I remember correctly.

dogwood 10th January 2010 09:37 AM


Originally Posted by Talonmotorsport (Post 28754)
Silly me. You'll need the 19mm reamer as the taper is 14-16mm if I remember correctly.

Silly you? silly me..:rolleyes:
Yes 19mm and yes makes a good fit


twinturbo 10th January 2010 09:42 AM

and the taper angle is correct with those?



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