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December 29th, 2003 and my brother and I brought this 1972 back to my house after a 24 hour road trip to pick it up. At least I’m assuming it’s a 1972 Daytona, I haven’t checked the serial numbers yet, but that’s what’s on the bill of sale. The plan is to fix it up and make it into a vintage class race bike. The bike is in pretty rough shape, below are some before pics so you can get an idea of what’s missing. Things like the seat and lights are minor, since they wouldn’t be suitable for a race bike anyway. The engine turns over and it shifts through some of the gears, but I’ll be opening it up to take a look in the engine before trying to start it. |
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No lights or gauges of any kind... pipes, plug wires, battery box... chain, seat, motor mounts... air filters, electrics, etc. |
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Moving right along, got my parts book and shop manual and went back to pulling everything off the primary side of the bike. The three nuts holding the stator on (that round thing on the left) came off pretty easy, but the leads that come of the stator and into a protective sleeve was pretty stiff, or the sleeve itself was stiff, 6 of 1... so pulling the stator meant feeding the cable down through the case and through tht little clipthat you can see between the 2 sprockets in the picture above and to the right. The clip can come off, but the secondary sprocket blocks access to the bolt, so I had to move it around in order to get the wire to slide out nicely, nothing major, hardly worth mentioning. Once the stator was off I could fit a piece of wood in the lower half of the case and removed the rotor nut, the piece of wood jammed between the chain and the secondary sprocket, preventing the rotor from turning so that I could remove the rotor nut. No tab washer on the rotor nut, so I'll have to mark that down as something I need to get for the rebuild. So that's the charging system, stator and rotor have been removed. Next is the clutch. Those little retaining nuts that hold the springs in place can be a pain in the ass to get out, you can see the three of them there on the clutch pressure plate. You have to use a special tool or big screw driver with a notch cut out of it to go over the bolt, the problem is that the nuts are dimpled in order to catch the end of the spring and prevent the nut from backing out. According to the shop manual, you should stick a knife in there so that the spring doesn't get caught on the dimple and you can then back out the nut. This is a fine idea, unfortunately I have been cursed with only having 2 hands, so this job proved frustrating, but not undoable, and eventually I got the three nuts, springs and cups out. Once these were out I removed the center nuts and could pull the clutch pressure plate and all the clutch plates. The nuts, springs, pressure plate look brown in the picture, rest assured, that's not a trick of the camera, everything, while wet with oil, does seem to have a surface rust film on it, I'll have to wait and see how they cleanup, I think I mentioned this during last winters rebuild of the 650, I need a media blaster. At this point I have all the clutch plates out, and the rotor and stator out, a fit of coughing from my cold caused me to pack it in for the night, hopefully I'll be feeling better this evening and will get back to it. The next step will be removing clutch basket, there's a bolt holding it in and I took one run at it but I wasn't able to get it off, it's on there damned tight. I checked with the shop manual but they didn't have any insight into how to easily remove it, so I'll just give it another try when I get back to it. As a vintage TT race bike, I won't need to power anything other than the spark plugs, so I'm thinking that I can cut down a little weight but not reinstalling the rotor and stator. I was talking to one of the racers last year who had a Triumph, he indicated that he just ran off a small battery, no rotor or stator, I can't image a battery would be much lighter than the rotor and stator, but what the hell, if I don't need to use them then I may as well set them aside for use in a future project. Since the races are fairly short, he just runs off the battery and then plugs it into a charger after the race. I'm also considering a magneto, although they can be a bit pricey. |
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As the pistons moved up they pushed the rags into the head until there was not room to move anymore, with a little muscle (not too much thankfully) I kept turning the sprocket and the cylinder was finally pushed away from the engine cases. Now that the cylinder had separated from the cases I removed the head and the rags and pulled the cylinder off the studs, being careful that the pistons didn't slam down against one of the studs and damage them. |
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Finally, with the gearbox removed I was able to get to the 2 remaining bolts. The bolts came out with no problem, allowing me to easily pull the cases apart. Unlike the chopper, there were no big chunks of metal sitting in the bottom of it. |
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The plan for this nights work was to get the sludge trap out of the crank and get in cleaned out. For those of you not familiar with these bikes, instead of an oil filter, the Triumphs of this era had a tube inside the crank that would collect crud that was forced out of the oil based on centrifugal (is that the right word?) force. As this sludge builds up it can end up blocking the oil passage and starve the crank journals, or at least that’s my understanding. So, like I said, the plan for this evening was to get the sludge trap out and clean it. |
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I was expecting things to be a bit moist in there, but the insides was mostly a bunch of dry crud, you can see some of the build up in the previous picture. Next I need to remove the bolt in the crank that holds the sludge trap in place, presumably so that it doesn’t spin. This was a fairly easy task. |
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Time is marching on and I've been trying to get the sludge trap out for about a week with no luck. I had reached the point, more than once, where I was convinced that there can't be a sludge trap in there, but I pressed on with the assumption that it's got to be there. So tonight I was gonna try Les' suggestion, found here: http://triumphchoppers.com/gallery/album41 |
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What you're looking at is only part of the sludge trap, the outer most part, which means the rest of it is still in there, and in there tight enough that rather than get pulled out with the outer rim, it broke right off. So here I sit scratching myself and wondering what to do next. I tried the same method again, but this time by putting the screw it tighter, nothing, then I shaved the screw down to make it pointier in the hopes that it would bite in to the trap, still nothing. I've heard of people using a drill bit to bite into the trap, I've tried that with a 1/2" bit before I knew the ID of the trap is 1/2". My next option is to give it a try with a 9/16" bit, but I hate to pay over $30 for the bit (at least that's the price I saw when looking). My other option is to re-drill the rod so that I can get more of the screw sticking out the bottom side of the rod. |
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It looks like a previous owner laced a 16” rim to the hub, I might swap this with someone for a proper sized rim and a decent brake for racing. |
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With the frame sitting on the bench, pretty much stripped of everything and waiting to be sand blasted, I figure I'd plod ahead with the engine. The pistons that came out of it were .020 over (over the stock bore of 2.7165 if you were wondering), so I assume the bore is around 2.7365, but I don't have a decent set of callipers to measure, that's something I need to pick up one of these days. The walls look to be in decent condition, so I'm not sure what caused the scoring in the pistons. I'll be taking the cylinder to the same place that did my 650 last winter, I'm hoping they just need to be honed, but worse case is that I have to go to .030 over. I think it was $14 a cylinder for the honing, not sure what they charge for boring but I don't recall it being too much. |
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Damn, I’m a whole year behind in updating this page. That last picture was taken in February of 2004 and here it is, February 2005 and I haven’t added a thing. Time to get to work, I’ll pull some posts from RMH and try to match them up with the pics. |
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An inspection of the journal bearings show that one set is a bit scratched, an inspection of the journals themselves show that one has a few blemishes on it (the second last picture on the right journal shows one of them if you look closely, right above the reflection of the light), so I might have to resort to getting them ground to the next size down, not really something I wanted to have to do, although I had it down to the chopper last winter. Not much done, but at least a little. In the last picture you can see the corner of a red tool cart, that was a surprise from the SO, she didn't want the garage floor littered with tools again this season, so she picked up a two level rolling cart. The tools that are on their currently are ones that were given to me last week by my BIL who is moving and was getting rid of a bunch of his doubles and triples. He didn't want to lug them out to Ontario, I'll keep most of them aside in case he moves back some day. |
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Posted April 24, 2004 |
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Posted May 15, 2004 |
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The valve guides seem to be in decent shape, and it doesn't look like there was anything escaping into the rocker box chamber, all in all it's pretty clean in there. The rockers still "need" to be disassembled and cleaned, then things will start going back together. I'll be getting the frame blasted at work in a couple weeks, then I have to find out what it'll cost to powder coat it. |
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Posted May 15, 2004 |
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I may have mentioned that I dropped my frame off with one of the guys at work who said his guys could sand blast it for me, for free of course. Well I got it back today, neatly wrapped in plastic. The idea was to now get it powder coated, but first I figured that the industrial blasting it got will likely require me to sand it down a little. I start enwrapping the plastic and it seems to be a dull gray, but I expected this, sand blasting isn't going to leave it all shiny. I keep unwrapping it and it's really gray, much more gray than I was expecting. I finally get it unwrapped and it looks good, a nice consistent gray color all over, but this isn't the dull shine of a freshly sand blasted piece of metal, it's primer. Damn, they not only sand blasted it but they primered the damned thing as well. It's a rough surface which will need some sanding, but it side lines my plan to have it powder coated, there's no way I'm gonna go through the trouble of removing the primer. So I think at this point I'll leave the primer and eventually take it in to have it painted by a pro, rather than the spray can job I gave the chopper. It'll take some wet sanding to get the primer nice and smooth but I'm thinking that I'll just wrap it up and leave it until I'm ready to have it painted and then let the paint prepare it the way they want. The only thing I did was to pound the bushing out of the swing arm. I left them in there knowing I'd want to replace them and not wanting the insides to get sand blasted. Took some pretty solid whacks but I got both the bushing out. Before I get it painted I'll likely have to go over it and remove any primer that's in spots that it should be, then have the painter tape off those areas before it gets painted. Now I have to start asking around to see if I can find a decent painter that's local and not going to charge an arm and a leg. I the meantime, I think I'll go pull the rocker boxes apart. |
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With everything apart it’s time to start the rebuild, which means the ordering of parts, the grinding of journals and the cleaning of the old parts.
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