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rx7171 · Nov 6, 2011

Nice bike.
Welcome to forum.
You mentioned oil leaks.
There are a number of threads on the site that talk about adding a reed valve to the engine vent line so it develops a negative case pressure that in a lot of cases stops engine oil leaks.
The most popular is the MikesSX650 that I put on my bike that was simple, cheap and no leaks.
You can just see it on the top of the oil tank with the large line coming up into it from the bottom and the line exits the valve on the end and enters the oil tank near the oil filler.

Bob

bonedigger · Nov 7, 2011

rx7171 said:
Nice bike.
Welcome to forum.
You mentioned oil leaks.
There are a number of threads on the site that talk about adding a reed valve to the engine vent line so it develops a negative case pressure that in a lot of cases stops engine oil leaks.
The most popular is the MikesSX650 that I put on my bike that was simple, cheap and no leaks.
You can just see it on the top of the oil tank with the large line coming up into it from the bottom and the line exits the valve on the end and enters the oil tank near the oil filler.

Bob

Thanks, I will have to look into that
can you guide me to where I might find one?

chapmanmd · Nov 7, 2011

Nice bike! My tins went on the FedEx truck this weekend to Brent at Vintage-Vendor for paint similar to what you have. Blowed up motor and shitty powder coat job on the frame is another story all together.

Welcome to the world of Norton's. Well more than MOST of these guys are great and are more than a wealth of knowledge. I'm pretty sure the collective knowledge of these guys is greater than the sum of knowledge the factory had. If not, it sure seems like it.

I'm not sure if Jim Comstock (on this site) offers his breather for the Combat or not yet, but he makes a VERY nice unit that I am more than happy with.

Cheers and happy riding!

rx7171 · Nov 7, 2011

bonedigger said:
rx7171 said:

Nice bike.
Welcome to forum.
You mentioned oil leaks.
There are a number of threads on the site that talk about adding a reed valve to the engine vent line so it develops a negative case pressure that in a lot of cases stops engine oil leaks.
The most popular is the MikesSX650 that I put on my bike that was simple, cheap and no leaks.
You can just see it on the top of the oil tank with the large line coming up into it from the bottom and the line exits the valve on the end and enters the oil tank near the oil filler.

Bob

Click to expand...

Thanks, I will have to look into that
can you guide me to where I might find one?

http://www.mikesxs.net/
I looked at the site but couldn't find the breather so you may need to contact them, but they are the source we've all used for it.
There are other types being used including Jim Comstock's that looks great but if you are on a budget it can't be beat.

bonedigger · Nov 7, 2011

http://www.mikesxs.net/
I looked at the site but couldn't find the breather so you may need to contact them, but they are the source we've all used for it.
There are other types being used including Jim Comstock's that looks great but if you are on a budget it can't be beat

Thanks is this it?
http://www.mikesxs.net/parts/img250/15-0677.jpg

bonedigger · Nov 7, 2011

Here is a pic of the inside of my tank is this bubbling caused by failure of gel coat or is an apoxy coating failure?
Just wondering because it seems to me that the gentleman I bought it from was very knowledgable about the bike and it seems to me that he may have done it already but it would probably have been sometime over 10 ten ago.
you can see at the bottom of the photo there is a collection of something that resembles some kind of coating that has settled at the bottom of the tank.

utahnorton · Nov 7, 2011

Welcome Bonedigger! There are quite a few Nortons in Utah (I have 5 including my 750 Commando Formula 750/BEARS racebike, my yet to be revealed :shock: Stealth Canyon Racer and yet to be built-850 shortstoke Commando racebike going into a Rickman frame for Formula 750/BEARS. There is a very active club here called the Utah British Bike Club http://www.utahbritishbikeclub.com and we meet the third Thursday of the month at rotating restaurants around SLC. We also hosted two National Norton Rallys in Torrey, Utah. The club also helps me with the AHRMA races Labor Day Weekend at Miller Motorsports Park called the Bonneville Vintage GP http://www.bonnevillevintagegp.com We have been getting quite a range of ages joining the club including younger guys in their 20's and 30's and our oldest member is 85 and still build's, kickstarts, and rides his vast collection of British Bikes. Be sure you read the forum before you purchase any coating for your tank. I would advise buying Caswell. Feel free to contact me directly if you need any help.

Cheers,

Tom Kullen
Event Coordinator
Bonneville Vintage GP
AHRMA 44x Formula750/BEARS
2010 AHRMA Sportsmen of the Year
http://www.bonnevillevintagegp.com
tomkullen@bonnevillevintagegp.com
435.649.7169-home/studio
801.557.4255-cell

swooshdave · Nov 7, 2011

bonedigger said:
http://www.mikesxs.net/
I looked at the site but couldn't find the breather so you may need to contact them, but they are the source we've all used for it.
There are other types being used including Jim Comstock's that looks great but if you are on a budget it can't be beat

Thanks is this it?
http://www.mikesxs.net/parts/img250/15-0677.jpg

yes

bonedigger · Nov 7, 2011

swooshdave said:
bonedigger said:

http://www.mikesxs.net/
I looked at the site but couldn't find the breather so you may need to contact them, but they are the source we've all used for it.
There are other types being used including Jim Comstock's that looks great but if you are on a budget it can't be beat

Thanks is this it?
http://www.mikesxs.net/parts/img250/15-0677.jpg

Click to expand...

yes

Thanks

bonedigger · Nov 7, 2011

utahnorton said:
Welcome Bonedigger! There are quite a few Nortons in Utah (I have 5 including my 750 Commando Formula 750/BEARS racebike, my yet to be revealed :shock: Stealth Canyon Racer and yet to be built-850 shortstoke Commando racebike going into a Rickman frame for Formula 750/BEARS. There is a very active club here called the Utah British Bike Club http://www.utahbritishbikeclub.com and we meet the third Thursday of the month at rotating restaurants around SLC. We also hosted two National Norton Rallys in Torrey, Utah. The club also helps me with the AHRMA races Labor Day Weekend at Miller Motorsports Park called the Bonneville Vintage GP http://www.bonnevillevintagegp.com We have been getting quite a range of ages joining the club including younger guys in their 20's and 30's and our oldest member is 85 and still build's, kickstarts, and rides his vast collection of British Bikes. Be sure you read the forum before you purchase any coating for your tank. I would advise buying Caswell. Feel free to contact me directly if you need any help

Hi Tom,
I believe I have actually met you before at the bonneville vintagegp or at SBK. I have been going to it every year since it has came to millermotorsportspark it is an annual event my brother and I look forward to every year. any help you can offer would be greatly appreciated! maybe we could hook up sometime this week and you could take a look at my tank to give me your oppinion?

rx7171 · Nov 7, 2011

bonedigger said:
http://www.mikesxs.net/
I looked at the site but couldn't find the breather so you may need to contact them, but they are the source we've all used for it.
There are other types being used including Jim Comstock's that looks great but if you are on a budget it can't be beat

Thanks is this it?
http://www.mikesxs.net/parts/img250/15-0677.jpg

Yes that's it.
There is a small mounting plate you can discard.
Between being wedged into position and the two hoses connected to it I don't need to actually hard connect it to the bike.
Maybe a nylon tie strap.
You can follow other breather threads and see others have located it in a number of places.
For me this was simple and with seat and tank on out of sight.

My picture actually shows the hose from the valve connecting to the front nipple on the top of the oil tank.
I thought this would work with the final vent hose coming out of the nipple on top of the tank by the filler.
This was a mistake as it caused some oil droplets to come out of the final vent hose onto floor.
My final installation has the line from the valve going to the nipple near the filler and the final line coming out of the front nipple.
No drips from this line now. Must be the routing of the vapors within the tank.

Bob

JimC · Nov 8, 2011

Two things I've learned about 1972 and later Commandos over the years. They leak oil if the crankcase is pressurized and the stock front brake master cylinder is way too big.

utahnorton · Nov 8, 2011

Bonedigger,

You can check out the Caswell coating in the yet to be revealed :shock: Stealth Canyon Racer. It started out as a '73 Commando but it has the fiberglass
tank off my '70 Commando racebike (hasn't had gas put in since coating). Racebike now has an aluminum short circuit tank. If you come up tp Park City this afternoon, be sure to dress warm-it was 10 degrees F. last night. Looking out the window I can see the snowmaking guns going full bore at all three ski resorts-it's going to be chilly today!

Cheers,

Tom Kullen
Event Coordinator
Bonneville Vintage GP
AHRMA 44x Formula750/BEARS
2010 AHRMA Sportsmen of the Year
http://www.bonnevillevintagegp.com
tomkullen@bonnevillevintagegp.com
435.649.7169-home/studio
801.557.4255-cell

biffom · Nov 8, 2011

Congratulations on the bike - I really like the color combo.

bonedigger · Nov 8, 2011

biffom said:
Congratulations on the bike - I really like the color combo.

Thanks i am a big fan of the color combo also.

AussieCombat · Nov 8, 2011

Yes the grey/silver is very nice bonedigger.
Can you enlarge your avatar pic, is that an old Bully.
AC.

bonedigger · Nov 9, 2011

AussieCombat said:
Yes the grey/silver is very nice bonedigger.
Can you enlarge your avatar pic, is that an old Bully.
AC.

Its a giant glory dh

bonedigger · Nov 10, 2011

after stopping by UTAHNORTONs' house yesterday I have determined that it is coated with caswells and that I am going clean it up and recoat it because some of the caswells is flaking of right at the fill hole.

On another note utahnorton I knew your race bike like familiar I have a poster of you racing it in my home office from the 2006 bonneville vintage gp I had it signed by Gary Nixon. I am going to have to get you to sign it also.

pete.v · Nov 10, 2011

HEY THERE STORMTROOPER, LOOK OUT FOR THAT EWOK!

bonedigger said:

swooshdave · Nov 10, 2011

pvisseriii said:
HEY THERE STORMTROOPER, LOOK OUT FOR THAT EWOK!

Fuck that's funny. :mrgreen:

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