Hello Cameron,
I did quite a bit of TR 250 work back in the '70's, and owned one for
12+
years. The TR250 engine should be rated at 109 bhp. The engine differences are
indeed in the camshaft, also, pushrods, pistons, intake and exhaust manifolds,
exhaust system, and not only carbies vs PI, but ZS-175CD emission carbies with
EGR. Most all of the same performance enhancements for the TR6 are straight
across boltups to a TR250 engine, like webers, tubular headers, cam reprofile,
port-polish-flow bench the cylinder head, are all qualifying period
modifications that should not deduct from car originality or concours.
Arguably, there were no TR250's "supposedly" delivered to the US with PI, but I
know that some dealers changed out to PI at some customers requests installing
the TR5 camshaft and exhaust system, and there are a very few 250's that went
through Triumph Tune first. Seems like some dealers had "ways" to get cars into
the states with these modifications. The TR5 was also standard with OD, where
it was an option on the TR250. TR5's came standard with wire wheels, the TR250
with steel wheels and mag style wheel covers. TR5's in the US were mainly left
over from auto shows, special order imports, or owners cars from US Service men
returning back to the states.
Regards,
Glenn Merrell
Triumph Stag Register USA VP
Member of:
VTR, RMTC, TSC USA, TSR, SOC
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Cameron Greig wrote:
>
> Hi All
>
> I am in the UK, and yesterday went to look at a rather nice TR250 that
> had recently been shipped from California.The car is in mess,but
> structurally solid,and complete.After getting home I started reading up
> on the 250 and was surprised to find that the standard 250 only produces
> 104 bhp,as a posed to 150 from the TR5. I knew the 250 was detuned but I
> had not realised by how much.Apart from the obvious difference of fuel
> injection / carbs what other differences are there? I was thinking mainly
> about the camshaft,and gear ratios.
> Finally what have any of you TR250 owners done to your cars to increase
> the performance.
>
> Thanks for any comments
>
> Cameron.
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