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Z900 A4/A5 engine mounting bolts thread and pitch
Posted: Sat May 24, 2014 11:28 pm
Author: Gavin
The bolts I am referring to are the two M12 lower engine mounts that uses the Steel "segments " instead of normal nuts.
The threads on one of them are in very poor condition , I want to change them but I have no idea what the thread details are apart from metric fine.
Can anyone help?
Posted: Mon May 26, 2014 4:27 pm
Author: sanderz
I make it M12 x 1.25 pitch - that's taken from my Z1B and using thread gauges and is 70mm long so take it there is a difference between model numbers.
Zpower only list 1 size replacement bolt for the A4 at M12 x 55 long
https://www.z-power.co.uk/merchantmanag ... cts_id=834
Hope that's of some use.
Posted: Mon May 26, 2014 4:31 pm
Author: sanderz
Just in case its the 'pear shape' nuts as well have a browse on there listings
https://www.z-power.co.uk/merchantmanag ... _20&page=7
Posted: Mon May 26, 2014 8:48 pm
Author: zed1015
I have an m12 x1.25 die that I use to make those bolts.
If you don't get sorted go down the Bapps etc and buy two course pitch stainless m12 bolts with long plain shanks and i'll make you a couple that fit.
They will have 19mm heads though.
Posted: Tue May 27, 2014 12:34 am
Author: jimmock
Yes, metric "super fine" 1.25 pitch.
Metric fine on 12mm is a 1.5 pitch.
Like Rob says, 17mm hex instead of a "standard" 19mm.
I too use a die of 1.25 pitch.
Posted: Tue May 27, 2014 12:45 am
Author: jimmock
After reading this thread again.
I'm almost certain that the two bolts in question are DIFFERENT lengths.
Posted: Tue May 27, 2014 8:14 am
Author: KeithZ1R
jimmock wrote:After reading this thread again.
I'm almost certain that the two bolts in question are DIFFERENT lengths.
and you would be correct
Posted: Tue May 27, 2014 8:27 pm
Author: jimmock
KeithZ1R wrote:jimmock wrote:After reading this thread again.
I'm almost certain that the two bolts in question are DIFFERENT lengths.
and you would be correct
Well thank you, sir.
Posted: Wed May 28, 2014 2:25 pm
Author: freddyz1r
KeithZ1R wrote:jimmock wrote:After reading this thread again.
I'm almost certain that the two bolts in question are DIFFERENT lengths.
and you would be correct
I knew you would be one day Jimmock
Posted: Fri May 30, 2014 10:31 am
Author: Gavin
Cheers for the info guys
Thanks for the offer Rob