Yes the 69-73(?) models had a different cam, and triumph claimed
150Bhp from this. In 73 they softened up the cam which improved the
idle, and reduced output to ~125BHP. The compression ratio was also
higher 9.5:1 I think.
The drivetrain was the same for Europe and the US, they used the J
type overdrive in the later model years, which is supposed to be
stronger.
In the 70's I had a stage 3 tune on a PI motor, and it's output
was around 175Bhp. The only part of the drivetrain that broke was
the diff ring gear (but that may just have been a bad unit).
I to would like to convert to Fuel Injection, but I don't think I
could ever get it through Arizona Visual Inspection.
cheers
steve
C. Donald Emery, III wrote:
>
> Has anyone else seen the add in the new issue of Grass Roots Motorsports re:
> fuel injection for SU and Zenith Stromberg carbed cars? Called for a
> brochure and was told that they will be in inventory by early June. They
> are being made by TWM Induction-anyone have any experience with them?
>
> This raises a few issues. I know that the euro-spec TR-6's had fuel
> injection and developed 40-50hp more then the NA carbed versions. Was the
> fuel injection the only reason for the hp difference or were there other
> differences. (ie a different camshaft) Also, did Triumph (BL) reduce the
> strength of the drive train for the NA carbed versions?
>
> Thanks.
>
> Don Emery
> 1969 TR-6
> CC27639
> Crown
> Point, IN
--
Steve Chandler - Chandler-O'Bagy Associates stevec@rtd.com
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