Re: UK urQ fuel problems

[GADBOISMT@aol.com]

In a message dated 96-08-12 02:04:16 EDT, you write:

>
>In message <vines.izZ7+eXW1mA@bangate2.tek.com>
>scott.john.mockry@bangate1.tek.com writes:
>
>> >>a)   Why is the quiescent position of the air volume sensor plate
>>      that controls the fuel metering head given as:
>> 
>>                       > "1.9 + 1.1 mm" ?
>> The 1.9 + 1.1mm means that the minimum height should be 1.9 mm but the max
>height is
>> allowed up to 3.0mm, in other words the plate height should be between 1.9
>and 3.0 mm


NO IT DOESN'T.  It means that the optimum (new) setting is 1.9mm.  But if
you're lazy or sloppy you can set the adjustment to being up to 1.1mm greater
than the optimum setting.  In other words set it to 1.9mm if you have the
time. 

>
>Why not give the centrepoint with a tolerance?  This would be more likely to

>give a result within bounds.

SEE ABOVE

Side note - those of us with 911s and do their own maintenance know that the
spec. for adjusting the valves is .04mm +/- .02mm.  This gives a range of .02
- .06 mm.  But the correct setting is a tight .04mm (probably .035).
 Anything more than .04mm is noisy.  Furthermore, if your setting is too
small you run the risk of burning the valves - especially at a track event
where the RPMs are kept between 3.5K-7K for 25 minutes at a time.  So set it
right the first time.

Mark