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Old 10-19-2016, 04:09 PM   #21
rhysmort
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Default Re: 72 Norton restoration

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Originally Posted by thomassuman@mac.com View Post
i agree that SERIOUS elbow grease is way better than regular elbow grease
very cool to see the original old pieces come back to life
nicely done
I think you miss the emphasis on my slang sir. I agree though lovely to see old stuff back in to use.
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Old 10-19-2016, 05:10 PM   #22
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Default Re: 72 Norton restoration

Nice save on the crank. After machining what you fo to the sealing surface?

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Old 10-20-2016, 05:36 AM   #23
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Default Re: 72 Norton restoration

Polished it with 600 grit wet/ dry paper.
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Old 10-28-2016, 05:59 AM   #24
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Default Re: 72 Norton restoration

Had a look at the cylinder head this week...like the bottom end, it was crusty on the outside but clean on the inside. Valves cleaned up very nicely, guide clearances all good. Gave the head a good cleaning put in a new pair of intake valve seals and it's all back together. Transmission was the same story, It is not uncommon to find some spalling on the first gear pinion, but in this gearbox, it was just like new. Cleaned off the dirt and corrosion, all the bearings were in perfect condition, so I put it back together with a new mainshaft seal and that was that. Did some polishing on some other bits and pieces, installed the new tires and the frame etc have gone off to be powder coated. With new pistons on the way, I should be able to get the cylinders bored to match them next week...also waiting for the other engine parts, new isolastics and a new pair of fork tubes.

Head before:



Head after:



gearbox before:




gearbox after:



cleaning up a few other bits:



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Old 10-28-2016, 07:42 PM   #25
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Default Re: 72 Norton restoration

These folks are a great group and their rallies are outstanding. I'll be going to Buena Vista next year. The Asheville rally last year was my first and very well done. If you want to see a horde of fine Nortons and other Britbikes, go.

http://www.inoanorton.com/index.html

GABMA are also excellent.

http://www.gabma.us/
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Old 11-01-2016, 11:58 AM   #26
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Default Re: 72 Norton restoration

Man, that's really coming around quite nicely. You're going to have to give me some pointers for the Guzzi I recently picked up. I don't think my slave laborer is quite up to the task...

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Old 11-02-2016, 06:44 PM   #27
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That's the idea! Start 'em young and fuel them up on Coca Cola and chocolate bars! I remember those days, my little guy and me had great fun together...and then he turned into a teenager and I suddenly became dumber than Homer Simpson! He's growing out of it at last (I hope). ;D
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Old 11-03-2016, 02:02 AM   #28
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Fantastic work!
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Old 11-07-2016, 04:33 AM   #29
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Not much to report on from last week. Got a crack in the crankcase filled and ground smooth, fitted the new main bearings and confirmed proper axial clearance. Parts order came in, so the cylinders have gone to the machine shop for a rebore. Picked up an old B44 racer for a friend as well (the wheels in his head are going around so fast you can smell rubber burning!)
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Old 11-07-2016, 10:19 AM   #30
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"Picked up an old B44 racer for a friend ..." -- That ought to keep him safely in the garage for a few years.
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Old 11-07-2016, 05:05 PM   #31
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Default Re: 72 Norton restoration

this is a cool project! I love that you're refurbishing as much original stuff as possible.
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Old 11-07-2016, 05:34 PM   #32
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Default Re: 72 Norton restoration

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I love that you're refurbishing as much original stuff as possible.
Thanks. I always try to reuse as much of the original stuff as I can. Some people like to restore stuff to the point where you have to wonder just how much of the original machine is left...that's OK, but it's not the way I roll...and when things are too expensive or too hard to find, that's when I find it interesting to fabricate parts myself.


...and Ratso, youre partially right, but that B44 will probably spend a hell of a lot more time cluttering up my shop than his.
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Old 11-08-2016, 09:56 AM   #33
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Default Re: 72 Norton restoration

You work fast Goldy, winter has just begun and you have almost wrapped up the Norton already. Great thread! I'm still tidying and preparing my shop for the winters endevour. Could you go in detail on the head job if it is not already done.

Cheers
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Old 11-08-2016, 07:36 PM   #34
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Well Lester, as far as the head goes, there really wasn't too much to it...upon removing the valve covers, I found the inside of the head to be remarkably clean. After that I removed the valves, springs and intake seals. The head was degreased in the parts washer, then after it had dried, I applied a good spray of Hotwire (that's an acid based wire wheel cleaner) to help remove the corrosion.While still wet, I gave it a light scrubbing, then it was thoroughly flushed with water and finally given a final buffing up with a selection of brass wire brushes. The valves were cleaned up in the lathe and appeared to be new. After checking the stem clearance in the valve guides, I lapped the valves to the seats, confirmed a good sealing surface with machinist bluing, then fitted new seals and put the whole lot back together, I gave the internals a good soaking in motor oil, polished up the valve covers and that was the end of that. I didn't take any pics during the job, so about all I've got is before and after.
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Old 11-18-2016, 06:04 AM   #35
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Default Re: 72 Norton restoration

Got the crankcase together and was all ready to fit the freshly rebored cylinder only to find that I had the wrong piston rings..far too big for these cylinders (Triumph 750). I was hoping to have the engine back together this week, but it's going to have to wait until the correct rings come in. Meanwhile I decided to tackle the forks. I had to machine a new damper cap for the left fork, as somehow the original one had broken, anyhow after looking after that I replaced the seals and tubes and polished up the lower legs. After that I turned to the Ebay brake caliper...cosmetically it was in remarkably good condition, but of course, the bleeder screw broke off...so I had to drill that out and machined up a replacement bleeder bolt, all sorted out now.
I wonder how much longer I will have to wait for the frame...the fellow who does my powder coating for me does absolutely flawless work, but he is not usually known for a speedy turn over.
Meanwhile I'm sure I will find some other things to tinker with... got an Ariel Square Four engine coming in this weekend.

crankcase back together



New damper cap



Forks and caliper...nothing quite like a smooth pair of legs.

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Last edited by Goldy; 11-18-2016 at 04:35 PM.
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Old 11-18-2016, 03:14 PM   #36
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You Rock Goldy!

A square four?!?!!?!?!? I hope you plan to share that with us.... NO.... You BETTER share that with us.

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Old 11-19-2016, 04:51 PM   #37
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Looking good and I am also eagerly awaiting Ariel four banger porn!
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Old 11-20-2016, 05:20 PM   #38
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OK...get your 'wank rag' out, here's the Sqariel stuff. I brought this pile home today, got to sit down and sort through it all to see how much is there and how much is missing. This total basket case is the sort of state that about half the projects I work on come in as...it's a challenge, but I enjoy it and it keeps me on my toes. I will document the build in a separate thread after I get this Norton sorted out.

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Old 11-21-2016, 12:28 PM   #39
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Default Re: 72 Norton restoration

Sir, you are a mad man!!!!
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Old 11-23-2016, 06:56 PM   #40
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Got the correct rings, so it was on with the show. Barrels in place then the head was installed and torqued and valves set. Got the rear brake disassembled and cleaned...all set to go (or should I say stop)...Today, over coffee a little birdie told me that he saw a nice black Norton frame with my name on it, so if that is indeed so, then the timing couldn't have been better, as I'm just about ready to make this thing back into a roller. May tackle the carbs next.


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