Crankcase pressure setup Voodoo
#1
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Crankcase pressure setup Voodoo
I know this must be posted before but i can't seem to find it or i just don't understand. When using crankcase pressure off the 36X is there just two lines, 1 line to the pickup tube, and the pressure line off the crankcase to the tank. No other vent line correct. or do i need the vent on the tank for refueling thru the pressure line and cap it off after filling the tank?
thanks
thanks
#2
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I know this must be posted before but i can't seem to find it or i just don't understand. When using crankcase pressure off the 36X is there just two lines, 1 line to the pickup tube, and the pressure line off the crankcase to the tank. No other vent line correct. or do i need the vent on the tank for refueling thru the pressure line and cap it off after filling the tank?
thanks
thanks
We used to limit the engine pressure nipple hole to .012", using the solder and c/l wire trick to help tuning.
#3
Junior Member
I'm' setting up a McCoy 29 that has a front air intake and needle valve , I would like to use a rear mounted needle valve on it . I read you must use a pressure fuel tank , this engine has no muffler . How can I get crank case pressure to the tank ?
Thanks , Mark .
Thanks , Mark .
#4
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We'd also restrict the inner hole in the nipple to about .012" - .015" for more reliable needling. A few years ago I did this to a K&S nipple with a bit of c/l wire and JG Weld inside the nipple. Fill the nipple, Pierce it with the wire, leave it there till it is semi hard, pull it out. It should leave a hole about .012" or so diameter. In the 1960's we used solder to do much the same. Plumbers solder not electrical works best. Coat the wire with carbon soot first if using the latter. Plumbers solder doesn't solidify instantly. It has a "mushy" phase to it's solidification.
Last edited by qazimoto; 05-04-2024 at 02:06 AM.
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markwesti (05-04-2024)
#5
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#6
On some engines the upper left rear cover screw hole goes all the way through to the inside of the crankcase. If your engine has the through hole, replace that screw with a 4/40" nipple.
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markwesti (05-04-2024)
#7
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