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Norton 880 long-term project
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Hortons Norton



Joined: 12 Oct 2007
Posts: 162
Location: Long Beach, California

PostPosted: Fri Sep 19, 2008 3:28 pm    Post subject: Reply with quote

Glad to hear you made it home safe Paul, Your trip sounds like it was very worth while. It was great to meet you on the salt. My brother is doing better now after his mishap at Bonneville and should be back on a bike in a couple of months, All said an done he now has 3 rods in his upper and lower arm and some pins a ton of screws and wire in his hand. Reading about your project makes me want to get started on the Combat now, This weekend for sure. Do you know where I could find a rear fender for the Combat? Maybe a trade, Gears? Take care and ride safe, Chuck Horton. Very Happy
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grandpaul



Joined: 15 Jan 2008
Posts: 652
Location: Laredo (south) Texas

PostPosted: Sat Sep 20, 2008 7:58 pm    Post subject: Reply with quote

I'm fresh out of Norton fenders now that I'm down to the last one and it's for the new project.

Much more to come now that I have the spare engine. It has an RH4 head that I can swap for some really good stuff.
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grandpaul



Joined: 15 Jan 2008
Posts: 652
Location: Laredo (south) Texas

PostPosted: Mon Sep 29, 2008 1:39 pm    Post subject: Reply with quote

Just received the "crown jewel" for my VR880 engine from Kenny - the head. It's a few pounds lighter than stock, has beefier valves
with lightened hardware, and spigots to accept modern flat slide carbs.







Once I decide on connecting rods, I can start going together with it.

Also found a nearly new Tokico front brake master cylinder; so the Kwakky front end just needs the steering stem adapted
to the Norton frame either by turning down the stem to fit OEM Norton sealed units, or a custom sized set of bearings.

Now waiting on the prototype monoshock rear and Blue bodywork from Dreer.

After that, there's not much left before it starts coming together except carbs, ignition, exhaust, and sorting out a final decision
on which wheels to use or build.
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GavinJuice



Joined: 24 Jul 2007
Posts: 87

PostPosted: Mon Sep 29, 2008 4:11 pm    Post subject: Reply with quote

Whats with this cutout??

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grandpaul



Joined: 15 Jan 2008
Posts: 652
Location: Laredo (south) Texas

PostPosted: Mon Sep 29, 2008 6:12 pm    Post subject: Reply with quote

It is what it is. Easy to spot it in a stack of stock heads. i don't think it has a useful purpose.
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norbsa48503



Joined: 07 Apr 2004
Posts: 1034
Location: Flint, Michigan

PostPosted: Mon Sep 29, 2008 6:18 pm    Post subject: Reply with quote

At one time Kenny D. was using this pathway for an alternate oil return via a fitting and hose.
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grandpaul



Joined: 15 Jan 2008
Posts: 652
Location: Laredo (south) Texas

PostPosted: Mon Sep 29, 2008 6:44 pm    Post subject: Reply with quote

That's right, he did mention recommending an external oil return...
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bill



Joined: 01 Jun 2003
Posts: 135
Location: Orlando Fl/Shady Valley Tn.

PostPosted: Mon Sep 29, 2008 8:49 pm    Post subject: Reply with quote

from the top pic it looks like a 750 head modified to 850?

windy
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iusedtolikehondas



Joined: 22 Jun 2008
Posts: 36
Location: napa ca

PostPosted: Mon Sep 29, 2008 9:38 pm    Post subject: Reply with quote

bill wrote:
it looks like a 750 head modified to 850?



i think the 850 heads have 9 cooling fins and the 750 has 8?

if so it'd be an 850
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ludwig



Joined: 30 Aug 2006
Posts: 113
Location: belgium

PostPosted: Mon Sep 29, 2008 11:58 pm    Post subject: Reply with quote

GP , looking at P 1 of the head , I suggest to drill a hole 10 mm dia . between the pushrod tunnels in the bottom of the " V " trough the first 3 cooling fins . This will allow the hot air between the exhaust ports to escape upwards , and improve cooling .
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marinatlas



Joined: 04 Nov 2007
Posts: 42
Location: France-St malo

PostPosted: Tue Sep 30, 2008 4:09 am    Post subject: Reply with quote

The 850 and 750 had all 9 fins, but effectively , when seeing this head from underside , we could imagine the bolt's holes nearby the plugs , that hade been redrilled, the only difference with the bore and so the squish band area........my two cents Pierre
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littlefield



Joined: 20 Jul 2008
Posts: 7
Location: Clute, TX

PostPosted: Tue Sep 30, 2008 5:50 am    Post subject: Reply with quote

I bet the length of the Kawa steering stem is wrong so you're going to have to machine it anyway. I cut the 30mm bearing fits on an R6 stem down to the 25mm Norton size. Haven't gotten it all back together but it looks like it'll work. I also need to machine to top of the lock nut so it will locate the fork clamp. This fit is close to bearing size and was lost when I reduced the diameter.
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grandpaul



Joined: 15 Jan 2008
Posts: 652
Location: Laredo (south) Texas

PostPosted: Tue Sep 30, 2008 5:58 am    Post subject: Reply with quote

I'm looking at having a sleeve machined to fit in the top yoke, with the reduced diameter re-threaded stem capped by a chromed grade 8 fine thread nut.

I'm really anxious to get that monoshock rear end and get to work on the fitting up and mockup of the rolling chassis.

The biggest booger is to find and properly set up a dual-disc wire spoke front wheel that will mate to the large diameter axle and caliper spacing.
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ludwig



Joined: 30 Aug 2006
Posts: 113
Location: belgium

PostPosted: Tue Sep 30, 2008 7:41 am    Post subject: Reply with quote

"The biggest booger is to find and properly set up a dual-disc wire spoke front wheel that will mate to the large diameter axle and caliper spacing" (quote ) ..Make a drawing of the hub you need and have it made . Shouldn't be that expensive .
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MichaelB



Joined: 14 Jan 2004
Posts: 446
Location: Yorba Linda, CA

PostPosted: Tue Sep 30, 2008 4:15 pm    Post subject: Reply with quote

Looking good GP.
With that head, cam and carb combo I highly recommend a rev limiter.
The cast iron crank can be explosive. Rolling Eyes
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The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.