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How do classic Triumphs run on unleaded gas?
#88791
03/08/06 12:40 am
03/08/06 12:40 am
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Joined: Feb 2006
Posts: 1,095 Toronto, Ontario, Canada
Matthew in TO
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OP
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Joined: Feb 2006
Posts: 1,095
Toronto, Ontario, Canada
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I assume that classic Triumphs would require leaded gasoline. Now that lead is not available, does this affect Triumph motors, valves, etc?
1970 Triumph T100S (1969 T100S motor)
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Re: How do classic Triumphs run on unleaded gas?
#88792
03/08/06 2:43 am
03/08/06 2:43 am
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Joined: Sep 2001
Posts: 2,792 Comox BC Canada
Gordo in Comox
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BritBike Forum member
Joined: Sep 2001
Posts: 2,792
Comox BC Canada
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My 53 Speed Twin does not seem to care. No obvious problems with the valves or seats. If I had a choice I would use leaded fuel but it is not available and I do not want to play around with additives.
Are you going to the Cape Breton race this fall?
Gordo
Without frequent roadside repairs there is no fun in riding!
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Re: How do classic Triumphs run on unleaded gas?
#88793
03/08/06 3:19 am
03/08/06 3:19 am
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Joined: Feb 2006
Posts: 1,095 Toronto, Ontario, Canada
Matthew in TO
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Posts: 1,095
Toronto, Ontario, Canada
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Thx. I've haven't got a bike yet, as I'm checking out two T100S next week. Sounds interesting though.
1970 Triumph T100S (1969 T100S motor)
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Re: How do classic Triumphs run on unleaded gas?
#88794
03/08/06 3:23 am
03/08/06 3:23 am
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Joined: Feb 2006
Posts: 647 Qld, Aust and Otago,NZ
Ginge
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BritBike Forum member
Joined: Feb 2006
Posts: 647
Qld, Aust and Otago,NZ
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Out here we have had unleaded gas for years.
I've been knocking around historic vehicle circles in NZ for about 15 years and never heard of anyone with a problem. Some use additives, most don't.
Not saying it's not a risk, but I think the risk was way over stated. Fill it up with the best octane gas you can, use the best quality oil you can, ride it often and don't worry about it.
Ginge
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Re: How do classic Triumphs run on unleaded gas?
#88795
03/08/06 8:31 am
03/08/06 8:31 am
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Joined: Sep 2005
Posts: 5,963 NL
Ger B
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BritBike Forum member
Joined: Sep 2005
Posts: 5,963
NL
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I do not have a Triumph, but the BSA is similar in this aspect. I can not fill up with leaded petrol any more in our village. So here I add a liquid lead substitute, which I buy at the local BP petrol station. When I fill up during a ride (usually appr. 13 liters or appr 3.xx gallons) I do not use the substitute. I never noticed anything different. Why did my exhaust valves sieze, some will ask (I wrote about this a week ago). I'm convinced that this had nothing to do with the fuel, but with to narrow tollerances on clearence between valve stem and guide bushing, yes or no in combination with an oil flow problem (still to be checked). Why the lead substitute than, at home? Old habits I think. I had four air cooled VW Beetles as well. Same basic design of head and valves, same story. So I think your Triumph can run without a problem on unleaded fuel.
Good luck.
Ger B
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Re: How do classic Triumphs run on unleaded gas?
#88798
03/08/06 2:34 pm
03/08/06 2:34 pm
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Joined: Jan 2004
Posts: 457 Picayune, MS
Zackybilly1
BritBike Forum member
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BritBike Forum member
Joined: Jan 2004
Posts: 457
Picayune, MS
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Re: How do classic Triumphs run on unleaded gas?
#88799
03/08/06 2:34 pm
03/08/06 2:34 pm
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Joined: Jul 2005
Posts: 1,919 new jersey usa
John RGS
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BritBike Forum member
Joined: Jul 2005
Posts: 1,919
new jersey usa
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Valve guide material is a consideration whilst running unleaded petrol in older British motorbikes.
,_o _ -\_<, (*)/'(*)
NOPGS #2
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Re: How do classic Triumphs run on unleaded gas?
#88801
03/08/06 6:35 pm
03/08/06 6:35 pm
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Joined: Aug 2001
Posts: 1,081 Cheshire UK
Phatt Bob
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BritBike Forum member
Joined: Aug 2001
Posts: 1,081
Cheshire UK
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Awooga! Awooga! Thread hijack alert. I was told last year (by the *** who refused to dyno my 500 - see other thread) that Shell Optimax was virtually indistinguishable from C16 race fuel on the dyno. Looks like the sales bumf may be true. Can anyone verify that Optimax IS as good as race fuel...or for that matter the BP equivalent - BP Ultimate? Cheers Bob There's that profanity detector again...instead off ***, read git 
Phatt Bob '95 Daytona 1200 '98 Daytona 1200 dragbike ex-850 T140 Caff Racer, 850 Triton, Morgo T120, Starfire and Pretend Daytona 500 owner
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