
This is not a hand tool but a visual tool if you are considering porting a Norton head. Sunday morning and I felt like playing. I always heard they were thin at the spring pocket, also watched a U-tube on how to measure. Nothing works like a picture. A friend gave a cracked head mostly to set up repairing exhaust port thread. Ports measure 30mm now and the thickness is only 5mm. If it maters I think it is an H10 head.
Cliff,Premier pilot jet cleaner. I could never get a piece of piano wire in there, so made this.
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Not for long, hopefully.Chaz, that is one crusty MKIII.
Sorry, just spotted this question. I made two actually, a 17 ( 0.43mm) which didn’t cure the unreliable tickover and a 19 (0.48mm), which being economic with my energy ( a lazy arse) I ran through the 17’s to make them 19’s with the carbs in situ.Cliff,
What size drill bit is that?
Which tool Onder ?You should run up a bunch of them and put them on offer. A tool more often used than most would wish.
That last photo was the head steady's "good" side! That stud and spacer are seized into the head steady.Chaz, that is one crusty MKIII.