Discussion in 'Norton Commando Motorcycles (Classic)' started by Onder, Feb 7, 2019.
Is said bolt 1/4" 26 CEI? If not, what is it?
1/4" x 26 BSF.
Late part number is 06-0720.
Edit: 06-0720 - All Commando '68-on, apparently.
Thanks I noticed that it seemed the same all the way through Commando production.
The great thing about the Old Britts site is they usually list the thread size/pitch.
Living in the UK I sort of forgot OB. But fact is my question was whether it was BSF or CEI. BSF is 55 degree and I thought CEI was 60. As I needed a tap wanted to get the correct one.
easy... try a bolt of each...
If it is an American cam (Megacycle) it would be 1/4-28. Most EI kits come with both bolts for the magnet pickup, based on what cam you have in your bike.
Well problem is I have a nice array of possible bolts none of which will play ball. Next is to have at it with a starter BSF tap. The bolt that came
out is clearly not the correct one. Ill report back...
Onder, Do you know what cam is in your bike?
Wait until next week when I get a chance to sort this and report.
Reporting back: DPO apparently buggered the threads or at least the first few. I had at it with a starter tap and was fortunate enough to get it in.
Second tap cut all the way down. The final tap wasnt happy about going in past the first thread so I wisely quit whilst ahead. A new bolt went in
well and although slightly loose in the early threads it is fine as you go deeper. So solution is to use a longer bolt and Im a winner.
Of course the bonus was I didnt even have to take off the timing cover!
we really dump on the DPO's, but some day in the future we'll be the DPO..... I sure hope i didn't screw anything.... at least its running nice and no leaks
Well SOMEBODY plucked the duck...we all have made errors that were sold on or swept under the rug. Part of the learning process!