[TR] zenith or su's ?

[Wayne Lee]

This last portion should of read. Fine at Idle but popping lean
on the Highway.

" Sort the Car out on the road using the Volvo Needle
 then see where you are rich. At idle or popping on the Highway."

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From: "Wayne Lee" <wayne at motorcarriage.com>
Sent: Thursday, December 31, 2009 11:49 AM
To: <jimmuller at rcn.com>; "Triumph List" <Triumphs at autox.team.net>
Subject: Re: [TR] zenith or su's ?

> I'm always aware of the "Point of View" element. That's what opens the 
> door to these ill perceptions.
> An Increased Spring Rate will make any specific Needle run richer across 
> the whole spectrum. No Exceptions!
>
>  Another common reason for this particular Conversion resulting in too 
> rich conditions is making sure the fuel Bowls are
> the correct ones designed for the Spit and MGC. (AUD 2140) Just because 
> you get Fuel Bowls that put them vertical
> doesn't matter, if You use the taller (AUC 1310) it will result in overly 
> rich conditions because of Fuel levels in the Bowls
> that can't be corrected by Float level.
>
>  If You are running the Stock Springs from a Donor Carb they will have 
> most likely at least the "Red Spring" 4.5 oz
> The Blue Spring(the lightest from the Midgets and spits at 2.5 oz wouldn't 
> kikely be on HS6's. You don't get into the Yellow
> or Green Spring Rates 11 and 15 oz respectively until You get into Healey 
> territory which requires a richer mixture.
> You don't want to compensate for bad Needles with Springs. The Needle 
> Profile or what Jim called "calibrated" is the
> most important part. Sort the Car out on the road using the Volvo Needle 
> then see where you are rich. At idle or popping on the Highway.
> Then take it from there. The Springs should be your last concern.
> Wayne