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Ian Wright

May 2, 2021 - 10:52AM

Re: New Norton 16H Cylinder Barrel

Whereas the M20 did use a 'stepped' liner..Ian

email (option): ian@wright52.plus.com

Rik

Aug 21, 2016 - 8:44PM

Re: New Norton 16H Cylinder Barrel

Ian Wright

['Pre-'38 Big 4 barrels are, as per the later (and WD) type, about an inch taller than 16H cylinders (the extra 20mm stroke)....']

The barrel would only need to be 10mm (.400" approx.) taller due to a 20mm longer stroke...

Is there a rod and/or piston difference as well?..Ian

Ian, same rod, different crank and very different pistons (Big 4 were flat topped and 16H have quite a raised crown).

The difference in height resulted in the need for the cutaway fuel tank hidden behind the rubber on the WD Big 4 as otherwise the plug couldn't be removed.

Steve Madden

Aug 22, 2016 - 2:27PM

Re: New Norton 16H Cylinder Barrel

Forgot to mention that the barrel is 16cm from the base (not including the spigot) to the top where the head gasket would fit.........on the left side 13 fins.......I haven't got my 16H here at the moment to compare...........

Anton

Apr 26, 2021 - 5:31AM

Norton 16H / 18 Motor Height

Would someone be able to tell me how many inches tall a Norton 16h and or 18/es2 motor is from the bottom of the crankcase to the top of the head / rockerbox? Thanks Anton

email (option): antoneastman@gmail.com

Horror

May 2, 2021 - 12:31PM

Re: Norton 16H / 18 Motor Height

Anton

Would someone be able to tell me how many inches tall a Norton 16h and or 18/es2 motor is from the bottom of the crankcase to the top of the head / rockerbox? Thanks Anton

WD16H is about 18.5", 38 pattern Model 18 is about 22", measured with the tank on so a rough measurement. It will fit in the frame if that's what you want to know, but you won't get the rockerbox off.

email (option): horror@blueyonder.co.uk

Ian Wright

May 2, 2021 - 3:22PM

Re: Norton 16H / 18 Motor Height

['It will fit in the frame if that's what you want to know, but you won't get the rockerbox off..']

I don't know anything in detail about the Model 18 engine but the 'Big Fin' Gold Star has the same problem...The head and rocker box have to come off together before the rocker box can be removed from the head...

However, if the rocker box studs are replaced with bolts it is possible to get it off without removing the head (which is a right pain)...Might that work for the Norton?...Ian

email (option): ian@wright52.plus.com

Horror

May 2, 2021 - 7:50PM

Re: Norton 16H / 18 Motor Height

In the proper frame you can take the engine apart. I guessed the measurements were to see if it goes in a WD16H frame? It's tight, the bolts come out but it won't lift over the valve springs.

email (option): horror@blueyonder.co.uk

Anton

May 6, 2021 - 7:20AM

Re: Norton 16H / 18 Motor Height

Thank you very much guys for the measurements. This should help me.

email (option): antoneastman@gmail.com

Rik

May 6, 2021 - 12:57PM

Re: Norton 16H / 18 Motor Height

So what was the reason for the question, Anton ? With a little more information, you could probably have received a much more detailed answer. There aren't many things that haven't been tried in the world of old motorcycles ! :grinning:

Samuel Cormier

May 18, 2021 - 3:39AM

Re: New Norton 16H Cylinder Barrel

Rob, perhaps different liners existed? This one is still in cosmoline and was wrapped in brown paper with Norton designation. The paper is gone.

email (option): cormiersam@hotmail.com

Rob

May 25, 2021 - 9:35PM

Re: New Norton 16H Cylinder Barrel

Hello Samuel,

According to a Hepolite catalogue, all Norton models in the thirties (WD16H upto 1947) had plain liners.

Flanged liners are post war items for e.g. Dominators.

Cheers,

Rob

email (option): wd16h@telfort.nl