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Re: Starting problems

To: Randall Young <Ryoung@navcomtech.com>
Subject: Re: Starting problems
From: "Michael D. Porter" <portermd@zianet.com>
Date: Sat, 19 Jun 2004 23:03:02 -0600
Cc: triumphs@autox.team.net
Delivered-to: alias-outgoing-triumphs@autox.team.net@outgoing
Organization: Barely enough
References: <NOEDJDCNFBCNELMBFNFEMEGCGNAA.Ryoung@navcomtech.com>
User-agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
Randall Young wrote:

>>- replace the float bowl needle valves with Grosse Jets (I didn't do this
>>'cause I got mine working)
> 
> 
> I just want to add that I don't recommend Grosse Jets.  They're more apt to
> cause problems than to solve them.
> 
> Because of the larger opening in the valve, they transmit more force to the
> floats.  That causes the fuel level in the bowl to be higher (since the
> float has to be immersed farther to generate the force to close the valve),
> which can cause mixture and flooding problems.  Several listers have had
> flooding problems, that were solved by returning to the factory float valve
> design.
> 
> I'm not at all scared of a well thought out modification, my TR3A daily
> driver has lots of them.  But IMO Grosse jets are a solution looking for a
> problem.

And, there was some talk among racers having vibration problems with 
them. At certain harmonics, the two little balls sort of danced on 
top of each other, causing the valve to open and close rapidly. At 
higher rpm, the effect was to lean out the mixture, sometimes 
drastically.

Cheers.

-- 
Michael D. Porter
Roswell, NM

Never let anyone drive you crazy when you know it's within walking 
distance.





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