Triumph tiger 90

Like many of the Coventry makes, Triumph had their roots in the bicycle industry, beginning motorcycle production in 1902.

Triumph tiger 90

Postby bikerman » Fri Dec 25, 2009 8:19 pm

I was given a book on bikes as a present so I looked up some of the earlier ones I owned back in 1955,1 was a triumph 90 which I'm absolutely sure was a 500cc with twin exhausts.The book shows what I think is the exact bike but states that the T 90 was a 350cc !!!!I'm pssitive I' m not loosing it & that it was a 500cc,can someone confirm this for me ???Any way hi to everybody,I'm still riding after 51 years & live in Lincolnshire on a 535 vir :208 ago.
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Re: Triumph tiger 90

Postby Welsh Wizard » Fri Dec 25, 2009 9:52 pm

Welcome to classic motorbikes,

T90 was a 350, but in those days it was very common to upsize the engine , easy weekend job so unless you had it from brand new it could well have had a 500cc engine.
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Re: Triumph tiger 90

Postby L.A.B. » Fri Dec 25, 2009 9:54 pm

The Triumph Tiger T90 certainly was a 350cc twin.

Could a previous owner have fitted a 500cc T100 engine, or maybe they fitted a T100 top end, which I think it is possible to do?

However there was a single cylinder 500cc Tiger 90 model, but that was a pre-war model.

http://www.flickr.com/photos/henry-gail/2710103395
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Re: Triumph tiger 90

Postby bikerman » Sun Dec 27, 2009 4:15 pm

Thanks for all the replies.Ive since discussed it with someone who seems to know quite a bit about Triumphs & he said that prior to the war 6 of the 350cc one were factory bored out to 500cc to test the market for them.Just 6 !! & if Ive still got it it would be worth a fortune,why didnt someone tell me that 65 years ago & I would have kept it .I would have had a few broken legs by now because it had a kick back like a mule if I didnt get it quite right when I kick started it. :20

PS yes it was a pre-war model, I think 36 or 37 ish
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Re: Triumph tiger 90

Postby L.A.B. » Sun Dec 27, 2009 7:10 pm

bikerman wrote:Ive since discussed it with someone who seems to know quite a bit about Triumphs & he said that prior to the war 6 of the 350cc one were factory bored out to 500cc to test the market for them.Just 6 !!


The pre-war single cylinder 500cc Tiger 90 was certainly not a particularly rare model as far as I'm aware, and in any case it was Edward Turner's upgrade of another earlier 500cc 5/5 model, and not a specially over-bored 350. http://www.ianchadwick.com/motorcycles/ ... ime02.html

One thing that bothers me is that the pre-war Tiger 90 wasn't a twin port single, so I wouldn't have expected it to have twin exhausts which you said it had?
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Re: Triumph tiger 90

Postby bikerman » Tue Dec 29, 2009 9:28 pm

Yes it did definately have twin exhaust & it was a single
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Re: Triumph tiger 90

Postby dig » Tue Dec 29, 2009 9:36 pm

:209 twin or single port were available nz-flag111
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Re: Triumph tiger 90

Postby MOUSE » Tue Dec 29, 2009 10:25 pm

From the Roy Bacon book "Triumph Singles" and others it states the models 1937 derived from model L2/1 was Tiger 70 = 250cc, model 3/2 became Tiger 80 =350cc, model 5/5 became Tiger 90 = 500cc

All pics i could find in my library (mostly from Ivor Davies) show a single port on the Tigers, not to say the earlier models were not twin ported, can't find any pics of them, ask :203 who lived the era :209

Ahhh, quick image search confirms Dig correct, earlier models = twin port. Times were tough, and not to say later models may have had earlier heads fitted?
Nice looking bikes.

http://www.btinternet.com/~haywards.cam ... 00_002.jpg
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Re: Triumph tiger 90

Postby dig » Wed Dec 30, 2009 12:24 am

Nooo, later models only single port as twin ports didnt go as well and they cost more to build :250
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Re: Triumph tiger 90

Postby MOUSE » Wed Dec 30, 2009 7:17 am

:29
"My arthritis has gotten so bad I can hardly grip anything, my cataracts seem to get worse every day, I have gout in my right leg and can't bend my knee and I can't hear anything.
But thank God I can still ride
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