Sounds good to me. I'll be doing my 1600 soon so this is useful
information. Do you call this the theory of nine? I'll try not to get
excited doing 7 of 9. Makes sense that if valve #4 on cylinder 2 is open
(exhaust cycle) that the opposing cylinder 3 in the firing order is in the
compression cycle and it's valves are closed (9-4=#5 on cylinder 3).
When you're doing those 2 valves at the same time, keep in mind that 1 of the
valve pairs is starting it's intake cycle while the next cylinder in firing
order has a valve that is starting it's exhaust cycle. For example, #7 is intake
valve for cylinder 4. Since firing order is 1-3-4-2, the next is cylinder 2
which will be starting it's exhaust cycle on #4 valve. And then cylinders 2 & 1
do a similar pairing of #3 & #1, then cylinders 1 & 3 do a similar pairing of #2
& #5, and finally cylinders 3 & 4 do a similar pairing of #6 & #8.
Text does not do this explanation much justice. Best way is to do a graphical
drawing of the cylinder and valve motion during two crankshaft revolutions.
There are probably animated graphics on the web displaying this.
Fred - So.SF
__________________________ Reply Separator __________________________
>Subject: Adjusting the valves
>Author: Robert.Long@CSDInc.com
>Date: 7/19/2001 9:46 AM
>
>Roadster List,
>
>Here's how I've adjusted my valves, is this correct?
>
>From the passenger side, I'm turning the engine manually, clockwise,
>until I see 2 springs compressed, pushrod pushing the rocker up. Then
>I count to this valve and subtract it from 9, and adjust that valve to
>.017" (hot). So, if #6 is compressed, I adjust #3.
>
>Is it correct to adjust 2 valves at a time? It looks to me like #4 and
>#7 compress at the same time, #8 and #6, #5 and #2, #1 and #3.
>
>Thanks...Robert - 67.5 1600 - ABQ
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