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Mitch's 74 Basket Case

Member's Norton Restoration Projects

Re: Mitch's 74 Basket Case

Postby htown16 » Wed Jan 20, 2016 11:05 am

Cleaned the cases and inspected the main bearings, superblends in excellent condition. Cases went back together easily using Hondabond4 sealent. New cam chain because of all the heat and pounding it took to get the old cam nut off. New cam nut and oil pump drive tightened using a cut away timing cover.
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I feel like I dodged a bullet on the bottom end. I knew the engine had water in it, but the only rust was on the bottom of the flywheel. If it wasn't for the water I would not have taken it apart as all indications are this is a really low mileage bike.
Note cheapo depot engine stand that is super sturdy.
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby grandpaul » Wed Jan 20, 2016 1:56 pm

Always nice to get a project rolling after a break. Once you get on a roll, it moves quickly.
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Re: Mitch's 74 Basket Case

Postby htown16 » Thu Jan 21, 2016 3:32 pm

On to the gearbox. First thing to do was remove the dreaded 6203 layshaft bearing. Which actually looks in good shape. But out it comes.
Image
New roller layshaft bearing in, also replaced the main shaft bearing as it felt a bit "crunchy".
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Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Thu Jan 21, 2016 3:35 pm

Main shaft gear set
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Layshaft set
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Gears are beautiful, absolutely no spalling. Only a very minor amount of sludge in the bottom of the box and per usual the top of the shift mechanism was rusty.
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Thu Jan 21, 2016 3:43 pm

Everything assembled
Image
checking the end float on the layshaft because of the roller bearing replacement per Old Brits. It measured .055 first go around. Added two .020 rear isolactic shims and now it measures around .010 which Old Brits sets as the top limit. It's not completely torqued down so should be fine. Pretty hard to measure that small amount of movement pushing the shaft back and forth. However, the .055 was real consistent and I measured each shim so should be pretty close. If you do this you need to enlarge the ID of the isolastic shim to clear the radius on the base of the kick starter shaft. I used a drum grinder bit in my Dremel.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Wed Feb 24, 2016 7:50 pm

Back to work on this one.
Inner cover hardware all in place.
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Gear box outer cover ready to go back on with a coat of 3bond Sealer on the gasket.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Wed Feb 24, 2016 8:08 pm

Here' s the seal I used on the kick starter shaft. My 72 leaked like a sieze with a stock oring until I put one of these in. Several thousand miles on it now and bone dry.
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Poor photo of it installed
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Oops, forgot to put the shifter oring in. Had to take the cover back off. Found on the 72 just an oring works okay on the shifter as it is mostly above fluid level.
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Thu Feb 25, 2016 9:44 am

Back to finishing up the bottom end.
Timing cover with AMR/Nortech anti-sumping mod. Did this on my 72 and solved the problem of having to drain the sump every time I rode the thing. New crank seal.
Image
Oil pump back on. AMR also modified the pump with an o-ring between the two compartments.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Fri Feb 26, 2016 11:40 am

Cleaned up some of the frame parts for painting. Used a wire cup brush in my angle grinder, followed by scotch brite pads.
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Everything coated with a couple of coats of etching primer
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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Re: Mitch's 74 Basket Case

Postby htown16 » Fri Feb 26, 2016 11:43 am

Cradle and swing arm painted with gloss black Rustoleum engine enamel from a spray can. Supposed to with stand heat up to 500F and oil and gas resistant.
Image
Other bits painted
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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htown16
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Re: Mitch's 74 Basket Case

Postby grandpaul » Fri Feb 26, 2016 5:42 pm

Don't slow down now.

Sleep is highly over-rated...
GrandPaul
author "Old Bikes"
too many bikes to list, including:
952 Prototype, MkIII Interstate, Combat Dunstall, Triton
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Re: Mitch's 74 Basket Case

Postby htown16 » Sun Feb 28, 2016 6:34 pm

Rear brake, cleaned and greased, brake shoes had plently of meat left so were reused.
Image
Outside of the drum, hardware cleaned up using a soft wire wheel on the bench grinder.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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htown16
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Posts: 822
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Re: Mitch's 74 Basket Case

Postby htown16 » Sun Feb 28, 2016 6:37 pm

Front wheel, new rim and spokes, new sealed bearings.
Image
Rear wheel, new rim and spokes, new sealed bearings.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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htown16
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Posts: 822
Joined: Wed Apr 29, 2009 6:15 pm
Location: Houston, TX

Re: Mitch's 74 Basket Case

Postby grandpaul » Sun Feb 28, 2016 6:56 pm

htown16 wrote:Outside of the drum, hardware cleaned up using a soft wire wheel on the bench grinder.


Everything you cleaned up using this method, could use AT LEAST a spray of clear rattle-can Rust-O-Leum, or it will certainly be rusty brown in a few weeks.

You might consider a home plating kit, like Eastwoods...
GrandPaul
author "Old Bikes"
too many bikes to list, including:
952 Prototype, MkIII Interstate, Combat Dunstall, Triton
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Re: Mitch's 74 Basket Case

Postby htown16 » Sun Feb 28, 2016 8:31 pm

They weren''t rusty, just grungy and still had the orginal plating on them. I've found if the original plating is somewhat still intact they will continue to look pretty good and not rust, just kinda of look patined, to use an overworked word. Important to use a soft wire brush. I also polish the bigger bits with simichrome. However, if they have rusted or are pitted then I usually replace them if nuts and bolts or paint them. Here's some I just cleaned with the wire brush and simichromed on a 70 BSA over 5 years ago. Now if I was building a concours competitor I would probably replate. But for an everyday rider I think it looks okay.
Image
Htown16
Magnolia, TX
1970 BSA Thunderbolt
1971 Commando
1972 Commando
1974 Commando
1978 T140E Bonneville
1974 Trident
2004 XL1200R Sportster
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htown16
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