Quote:
Originally Posted by rrc
Thanks to all for the tips. We didn't get to time it.The wires are the red solid core type and the AC plugs were in the motor.However, I will get a new set of Autolite AR-133 if that sounds right. I'm really out to lunch with the barrel valve.How do you set that?Also, would a secondary or high speed by-pass help?Which one could be of most importance for this application? Won't be doing any balls to the wall running with it.
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OK - dant is right - the best way to set the barrel valve is with a leakdown tester. With a 360 and 2-3/16" injectors we set our barrel at 18-19%. With the 305 heads you have you may need to go a little leaner - say 16-18%. If you don't have a leakdown tester, a quick way to set it is to take a 1/16" drill bit, and set the barrel to where the bit just slides into the exposed portion of the hole in the valve. Make sure you're on the correct side of the ramp (the slot in the barrel valve should appear as the throttle is opened and the hole should be disappearing). This will get you into the ballpark.
We run a highspeed on one of our motors (set at 55 psi), but not on the other motor. We don't run secondaries and haven't noticed any problems. I would say you probably won't need either with the motor you have.
One of the best investments I've made is the two-gauge leakdown tester. I use it not only to set the barrel valve, but also the high speed, and I leak down the motor every couple of nights to trend any ring/valve leakage. If you have a blown head gasket or something this will show that, as well.
Please feel free to PM me if I can help further. I've made many mistakes, but I've learned from them.
Tim Simmons