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[Doug Robson]

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-- 
Doug Robson	Sydney 	Australia	
-------------------------------------------------------------
doug at cia.com.au				| Thank God for	
					|     
Club Car Racing Register of NSW		|    Gravity
1992/93 Under 2 litre State Champion	|
-------------------------------------------------------------

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Date: Fri, 01 Dec 1995 06:18:01 -0800
From: Doug Robson <doug at cia.com.au>
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Subject: Re: When is too big to big
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Bruce, thanks for your reply
I looked at your formula last week . Could you define the injector size 
pound? variable plse, i always think in cc/min at full open. Is yours 
pounds of fuel per something. At what pressure. 

Yes I have changed about everything.

Can you confirm this proposition.
Assuming a CO exhaust anaylser is representing all four cylinders 
equally.( and i pretty sure it is as we had the motor at 4000 rpm at 
medium load and by cutting each spark we lost equal power at dyno)

If you get a CO reading between 4.5% and 5.1% at all loads and RPM above 
4000 then the following is also true.
	1.	The Coils OK
	2.	The Fuel Pump is OK
	3.	The Spark is OK
	4.	The Fuel Volume is OK

or in another way if a motor is hurling away at 8000 RPM at Wide Open 
Throttle and CO is 4.8% ( and this what i ran it at when the carbys were 
on) is the lack of airflow the major determinant of the power loss or 
can CO be misleading. I may have to shrink myself to the size of a pea, 
stand next to the vale seat , and measure the airspeed with a whistle.

regards
 
-- 
Doug Robson	Sydney 	Australia	
-------------------------------------------------------------
doug at cia.com.au				| Thank God for	
					|     
Club Car Racing Register of NSW		|    Gravity
1992/93 Under 2 litre State Champion	|
-------------------------------------------------------------

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