MAdams
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- San Dimas, CA
I took my 931A2 out for a drive today for the 1st time after some recent mods. I have the pre boost screw turned out 1 turn, the gov springs tightened 3 clicks and yesterday I advanced the IP timing to 14 degrees. The way I advanced the pump was probably not the correct way. I installed the engine timing pin and pump pin, loosened the IP shaft nut and slide the pump back off the taper, then removed the engine pin and with a ratchet turned the motor over 6 degrees using some timing tape as reference. I tightened the IP shaft nut, removed the IP timing pin and fired it up.
The truck ran good but seems to have a little less power now and I am wondering if when I turned the motor over 6 degrees, if I went the wrong way. How bad would the motor run with only 2 degrees of timing?
Also, just for info. This is the 1st trip with a boost and egt gauge. At full throttle I am seeing 21psi and the highest egt's are 1,050 degrees on a 2% grade going 60 mph.
BTW where I located the gauges looks good but you really cant see then while driving.
The truck ran good but seems to have a little less power now and I am wondering if when I turned the motor over 6 degrees, if I went the wrong way. How bad would the motor run with only 2 degrees of timing?
Also, just for info. This is the 1st trip with a boost and egt gauge. At full throttle I am seeing 21psi and the highest egt's are 1,050 degrees on a 2% grade going 60 mph.
BTW where I located the gauges looks good but you really cant see then while driving.