[urq] Parts recommendations

[James Howard]

The thermo valve closes as the engine warms up.
When the engine is cold, the valve is open and fuel control pressure varies 
with vacuum.
When the engine is hot, the valve is closed and full vacuum is held on the 
control pressure reg (after the 1st decel) until a WOT event when the 2 way 
valve on the bulkhead opens and positive pressure is allowed through to 
dispell the vacuum.

The control pressure reg does not enrichen further on boost, only leans on 
vac - it is at full enrichment travel at atmospheric pressure.

Ergo, without the thermo valve, you have no cold running or WOT enrichment 
control, as the control pressure reg will be maxed out at part throttle even 
with a hot engine.

Jim.
----- Original Message ----- 
From: "Ingo Rautenberg" <i.rautenberg at waratap.com>
To: <AudiQtroCp at aol.com>; <urq at audifans.com>
Sent: Tuesday, March 29, 2005 5:54 PM
Subject: Re: [urq] Parts recommendations


>I was wondering how long it would take for some snide remark like that ;-)
>
> ----- Original Message ----- 
> From: <AudiQtroCp at aol.com>
> To: <urq at audifans.com>
> Sent: Tuesday, March 29, 2005 1:28 AM
> Subject: Re: [urq] Parts recommendations
>
>
>> Ingo, be more careful.
>>
>> Its all fun and games until someone loses a nipple.
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