1971 Single sided swingarm fastback (2011)
- Thread starter motoalchemist
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Snorton74 said:
Yes, but sometime my wife has plans for me that I didn't make, lol
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Snorton74 said:
yeah, ya know i do need to remember that once in awhile, I am very lucky when itg comes to my time with bikes. she is a keeper!!. Of course that green ZX6 you see in the backround is her bike. So she completly understands my passion for working/riding on bikes.
As a matter of fact, here she is working on said Ninja....this was a few years back when I had bought her some new Galifer rotors.
and she installed them herself
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Anyway, sorry for off topic pics, back to the Norton project,
I wasworking on installing the gearbox and tourqed up the upper gearbox bolt...but I missed that one of the adjuster blocks was not seated all the way..and as I tightend the main bolt it caused the threaded adjuster to bend....dammit!!!
so I took it all back out and will have to heat this up and straighten it out
I wasworking on installing the gearbox and tourqed up the upper gearbox bolt...but I missed that one of the adjuster blocks was not seated all the way..and as I tightend the main bolt it caused the threaded adjuster to bend....dammit!!!
so I took it all back out and will have to heat this up and straighten it out
No apologies required M.A., great thread, great pix, & I `ll [almost] resist the temptation to include any potentially ambiguous quips about getting lovely wifey to hold on to your twanging assimilator `til you get the fixings tight in situ..
Hey, & apologies in advance if I am out of line...
Hey, & apologies in advance if I am out of line...
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J.A.W. said:
no worries man, this is a motorcycle forum. lol
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grandpaul said:
Yep thats the early signs of keepers, I'm glad we brought this up..it's reminded me of how luck y some of us are. And here I was considering trading in for a newer sportier model......and I'm not talking about the bike!
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grandpaul said:
Yes I know, I have been through and upgrade before...big $$$$
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Just wanted to update you all onvthis weeks progress. Of course I never get as much as I want to done. Things Like family and Job keep getting in way
This week I decided i am going to prepare the cylinder head. I have new guides, valves and on the left you cansee my little home made removal and installation tool
Close up of tool, took about 20 mins on a lathe. gunna have to madeanother cause the smaller diameter is worn and doesnt fit quite as tight in guide bores as it should...this is important to install a guide undamaged
First, Bake Head at 250 degress for one hour. This is an autoclave , those hoses are the vacuum lines which I dont need, i just used it as an oven.
HEre is a pic of the old guides about to be punched out. Unfortunatly i didnt get a pic of the head with guides out . I had heat gloves on and I couldnt handle camera
This week I decided i am going to prepare the cylinder head. I have new guides, valves and on the left you cansee my little home made removal and installation tool
Close up of tool, took about 20 mins on a lathe. gunna have to madeanother cause the smaller diameter is worn and doesnt fit quite as tight in guide bores as it should...this is important to install a guide undamaged
First, Bake Head at 250 degress for one hour. This is an autoclave , those hoses are the vacuum lines which I dont need, i just used it as an oven.
HEre is a pic of the old guides about to be punched out. Unfortunatly i didnt get a pic of the head with guides out . I had heat gloves on and I couldnt handle camera
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Here is the head with new guides installed and about to be final reamed for valve stem fit. works best with a piloted reamer and a bridgeport. but Ive had good luck doing it carefully by hand
After reaming, I have this stone on a long shaft that fits perfectly in guides. Using a high tourqe, low RPM drill motor i ever slightly cut a new seat .... just enough to allow proper seat width and 360 degree contact....this stone is another home made tool. Bar stock shaft and the stone was just a cylinder milled to a 45 degree angle on a lathe
After cutting with stome, I lapp in seats by hand useing progressivly finer lapping compound. In this picture you can just make out the gray rings around the new valves and the seats, this is what you want , a dull gray symetrical ring.
After reaming, I have this stone on a long shaft that fits perfectly in guides. Using a high tourqe, low RPM drill motor i ever slightly cut a new seat .... just enough to allow proper seat width and 360 degree contact....this stone is another home made tool. Bar stock shaft and the stone was just a cylinder milled to a 45 degree angle on a lathe
After cutting with stome, I lapp in seats by hand useing progressivly finer lapping compound. In this picture you can just make out the gray rings around the new valves and the seats, this is what you want , a dull gray symetrical ring.
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After all machining drilling and lapping, i wash the head. Here is the head about to be washed in a just under boiling water detergent solution. it is very acidic and aluminum shouldnt be in it for very long, couple of minutes at most. after vigorous wash it gets submerged in a hot water tank for 15 minutes. the result leaves the head squeaky clean and it brightens the aluminum, and no swag to damage valve train
Very Nice !! When I was a kid I remember helping my Dad hand lapp the valves and seats on his '69 Mustang cylinder head, it had a 6 banger in it and we had over 100,000 miles on it by 1975. I'm looking forward to removing the head on 850 and installing new valve guides if need be. My garage isn't as well equipped as yours though. Cj
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Al is not very reactive to acids but sure is to alkaline solutions such as strong detergents so limit time in dish washer hot baths and rinse well soon after. Nitric acid can be used to dissolve a steel stud out of Al w/o hurting the Al threads or surrounds. Head alloy is a darker alloy than the cases or covers so I wonder if the detergent brightening effect is d/t dissolving some the alloying toughening elements out of the surface. I have brass wire brushed my heads with phos acid and didn't get brightening just more shiny smoother darker head surface.
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hobot said:
This solution is more of a detergent designed for degreasing without solvents, and it does brighten Al just a bit . Funny though, we aren't suppose to dunk Ti in this tub, separate tub for that metal.
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update on the sss fastback,
i got the cases together, just double checking the end play......still good with nice new mains
Base studs installed and just test fitting gaskets and cylinders (didnt know if i should use 750 or 850 gasket )
installing dunstalls lifters...this is a 750 cylinder...should i paint it black? or leave au natural?
i got the cases together, just double checking the end play......still good with nice new mains
Base studs installed and just test fitting gaskets and cylinders (didnt know if i should use 750 or 850 gasket )
installing dunstalls lifters...this is a 750 cylinder...should i paint it black? or leave au natural?
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