Author Topic: Start up 1969 Triumph T100 Tiger after sitting for years.  (Read 143 times)

Offline stevestriumph

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Start up 1969 Triumph T100 Tiger after sitting for years.
« on: August 12, 2018, 05:30:50 AM »
Just fired up a 1969 Triumph T100 Tiger for the first time in years. I have no history on the engine or repairs etc. After a good tune and service the bike started right up. Rode it and everything seemed in order. Upon return home, after just a couple of miles, there was significant oil coming out of the crankcase breather. Is it advisable to flush out the lubrication system on these bikes prior to start up and if so what should one use? I was getting good oil return to the tank but I did not check the pressure. Any thoughts? Steve

Offline mini-me

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #1 on: August 12, 2018, 09:27:53 AM »
Probably just excess oil in the crankcase.
Don't flush it, ride it.

Its also possible the rings might be stuck or some bore wear damage.  Do a compression check.

There is no way  to check oil pressure I know of, as long as it returns that's enough; the return should be in hiccups, if it was  a steady flow, then it was excess oil.

Offline iansoady

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #2 on: August 12, 2018, 10:10:30 AM »
Did you drain the crankcase as well as the tank when you serviced it, and if so did much come out? If not, probably a minor case of wet sumping although this is less common with Triumph plunger pumps than Norton / BSA gear pumps.
Ian
1952 Norton ES2
1982 Moto Guzzi V50

Offline mini-me

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #3 on: August 12, 2018, 10:29:35 AM »
Where have all these tigers escaped from lately?

Offline iansoady

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #4 on: August 12, 2018, 11:56:41 AM »
Maybe it's the same one passing from hand to hand?
Ian
1952 Norton ES2
1982 Moto Guzzi V50

Offline mini-me

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #5 on: August 12, 2018, 05:08:26 PM »
you mean no one can get it going? :o

Offline stevestriumph

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #6 on: August 12, 2018, 06:15:30 PM »
Thanks for all the input.
 I did change all the fluids. There was very little oil in the sump.
I failed to mention in the earlier post that after the first ride the top end including the carburetor was extremely hot and I wonder if it's not oiling properly? Is there a good way to check? I can't help but think a good flushing out, maybe with Marvel Mystery Oil could help. Steve

Offline Rex

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #7 on: August 12, 2018, 06:37:54 PM »
I've never liked the idea of flushing things out as it can dislodge the sh*t of decades. If you want to check that oil's reaching the top end then slacken one of the rocker box oil union bolts (the two central bolts) and start 'er up.

Offline mini-me

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Re: Start up 1969 Triumph T100 Tiger after sitting for years.
« Reply #8 on: August 12, 2018, 09:47:05 PM »
Quote
Marvel Mystery Oil
from the makers of snake oil I suppose?