My car only has the white plastic restrictor inside of the middle cannister
pipe. Doesn't have the 154209 restrictor in the hose. I can't say for
certain that's correct but it runs pretty fair with it that way.
You are right to be concerned about the calibrated vacuum leak. It can
really make a difference especially if you have to tune to meet emission
standards. Since you have the TRF catalog check your carbs to see if
they're the right year for the way you're routing your vapor recovery
system.
Bud Rolofson
71TR6 CC57365 (Good 6)
66TR4A CTC57806 (The Wreck-Almost Parts)
66TR4A CTC57529 (The Project)
----- Original Message -----
From: "Hugh Fader" <hfader@usa.net>
To: "'6pack'" <6pack@autox.team.net>; "'triumphs'" <triumphs@autox.team.net>
Sent: Friday, November 15, 2002 10:16 AM
Subject: Adaptor on carbon canister
> I'm getting close to having my vapor recovery and breather plumbing in
> place. I found black nylon tubing identical to the original at
McMaster-Carr
> (part# 5548K18). I used 15/32" emission hose for the large vacuum lines.
> It's a real bear getting it over the tee adaptors, but it seems to make an
> airtight fit. The hoses were routed slightly differently on earlier and
> later TR6s. I chose to use the later routing because it fits the front
carb
> better. I blew into the breather on the valve cover and noticed that there
> were leaks around the bolt holes. This may have had something to do with
my
> idle instability. Sealed them with black RTV.
>
> I'm not happy about the vacuum hose fittings on the carbs. TRF did not
have
> the restrictors (154210), only the adaptors (155148). I bought those, but
> they have a larger orifice - about 0.3" vs. the 0.18" that Sam Gentry
> reported to me. This may not sound like much of a difference, but it's
> triple the cross-sectional area and therefore triple the flow. Maybe the
> mixture adjustment can compensate for this?
>
> Now to my question. There is a detail on the carbon canister I am trying
to
> figure out. None of the catalogs seem to have exactly what I have on my 72
> TR6, but TRF p. 89 is closest. They show a restrictor (154209) going from
> the vacuum hose to the two-port carbon canister. From the illustration, it
> looks like the fitting goes over the top of the pipe on the canister. Now,
> my canister has what looks like a restrictor, but it fits inside the pipe.
> Are these equivalent or are both required? Can anybody with a stock setup
> take a look for me?
>
> I know this may all sound pretty obsessive, but I think the details have
to
> be right. After all, this is a carefully calibrated vacuum leak!
>
> Regards,
> Hugh Fader
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