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Home Motorcycle Home Triumph Home Export Home Norton Info Home Special Parts Updated 10/24/25 Master Switch Bracket Updated 02/28/25 MKIII Rebuild Updated 10/10/25 Combat 5 Updated 12/07/25 High Mileage Combat Updated 12/07/25 Roadster 850 Updated 09/21/24 Customer Combat Partial Rebuild July 24 Delivered 03/22/25 850 Commando Recommission Delivered 09/20/24 Customer Combat Build Oct 23 Shipped 7/13/24 1975 Norton Wiring Delivered 06/07/24 Blue 69S Delivered 05/17/24 High Mileage 850 Delivered 03/26/24 Mk3 Engine & Gearbox Delivered 03/07/23 1973 Customer BasketCase Build Delivered 07/15/22 1974 Norton 850 Commando Rebuild Sold 01/12/21 Updated 06/10/21 Customer Combat Delivered 09/07/20 First Place Norton 05/18/2025 1972 Norton 750 Commando Rebuild Completed 05/15/19 First Place Norton 05/16/19 Sold 01/01/20 1972 Norton Wiring Completed 07/19/18 1974 Norton Wiring Completed 07/27/20 Customer Combat and 69S Builds Closed 10/18/23		Monday, December 8, 2025
	November 24, 2025 Originally, I wasn't going to document this as I've documented engine/gearbox rebuilds before. But the owner's story tells me that this one might be interesting. Especially since this will be the highest mileage Norton I've ever worked on. As a part of his introduction, the owner said: "I recently acquired my old college roommate's 72 Norton 750 Interstate with a Combat Engine. It has over 78K miles on it and supposedly has never been opened up except to replace a cracked piston skirt early on in its life. He was stationed in Germany in the 70s and bought and had shipped back this bike from England so he is the original owner. I have known him for over 50 years and his recent bad health has had him put the bike up in 2021 until this August when he gave me the bike. I have gotten it running but there is knocking noise coming from the cylinder head I believe and it pops out of first gear. So I would like to get the engine and transmission rebuilt." He is planned to bring me the engine and gearbox this weekend. I'm hard at work on Combat 5 and two more heads and MKIII Rebuild but I'm always stuck waiting for parts so this should fit in just fine. The goal it for him to have it back to ride in the spring. Of course, that will be much easier if I don't do any hospital stays! Today, I looked around for a clear flat spot to put his engine on - found none - so I spent a lot of time straightening, putting away, and cleaning and now there's a place! This will be it's home at least while taking it apart and figuring out what it needs. Then it can go in bins until ready to be assembled and the gearbox can be worked on here. I considered building another of my mobile work tables as it would be more comfortable than working at a Workmate but I need to get some of these projects done! BTW, the black thing is a heavy duty "Lazy Susan" and the engine stand is a modified version of the stand Andover Norton makes. I have sent them the plans and hopefully once they've sold their current stock they will start making my improved version. With mine, you can get at the bottom bolts and screws and you can get to the sump plug(s). Also, when I ship engines, I mount them in this stand, screw the stand down to wood and that becomes the bottom of the crate - of course, insisting that the receiver take the stand apart and send it back. December 5, 2025 New plan - he's bringing the engine this Sunday. Issue: leave a flat spot untouched around here and it gets touched! I'll need to do some cleanup to get it back to the picture above :-) Also, guys are coming out of the woodwork - there may be another guy coming tomorrow or Sunday with an engine to rebuild and there's a guy out west considering sending a seized engine to be fixed. December 7, 2025 The brothers are back! Bike builds run into each other but I knew the owner of this one was the brother of the owner of another documented bike. That bike was the previous highest mileage bike! High Mileage 850. That bike is doing well. I meant to take a picture before doing anything, but we got to talking and I enforced my rule: "Visit me and you have to work!" It's hard for me, especially with the engine up high, to get the head loose so the brothers and I did it. The bike has alt leat 78k miles and it's only been apart once when it was almost new for a "broken piston skirt" which probably really was the top of the piston came off - those original Combat pistons had a bad habit of that and this a VERY low serial number Combat. One bore looks excellent and the other has some marks but you can still see the cross hatching in both! It currently has +0.020" pistons and since they were replaced early-on, they are likely the bad kind. The owner said that it has a top end noise and I took a cursory look at the head and didn't see anything. He wants my full treatment so we'll see when I get the head apart. It may be a while before I do much other than get the cylinders off and determine if they need bored as Combat 5 is the priority right now.

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