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By panel driver - 2 Years Ago
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Anyone ran into an issue of oil coming up shaft and into distributor pickup area?
I have a pertronix 3 distributor system I got from FBO systems. Noticed oil leaking
from drain hole in bottom of distributor. Opened the cap and there is oil below pickup.
I spoke to FBO and he said its from excessive pressure in crankcase under load.
The engine rebuild has less than 10k on it. I am running a pcv system from the
valley pan. FBO says the upper bearing is sealed and should not leak unless
its excess pressure. I'm going to try to put a guage on the oil fill tube and power brake it
to see what I get. Just wondering if anyone else has ran into this issue. Thanks
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By DANIEL TINDER - 2 Years Ago
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I’d be curious to see the results (sort of makes me want to revisit the complexities of the PCV system). I assume you have checked to see that the valve isn’t plugged up with sludge?
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By panel driver - 2 Years Ago
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Yeah it looks like new and I'm using a 2823 pcv valve. Let me put my hands on a manometer and get some
readings I will post what I find.
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By panel driver - 2 Years Ago
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I checked the pressure in the crankcase at warm idle. It shows about a half inch of vacuum.
I power braked it to 2000 rpm and I get about a half psi of pressure.
I don't think it is that bad. I think I'm going to put my original distributor,
coil and ballast resistor back on and see if it leaks. Or should I try to
find a different pcv valve. Let me know what you
think. I tried to post a video from my computer file but had no luck. Thanks
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By Tazx100 - 2 Years Ago
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Seems to me your biggest change was going to a pcv system, I dont have any measurement devices to tell the difference between road draft and pvc. But with the road draft there cant be hardly any pressure build up.
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By panel driver - 2 Years Ago
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I got your point. But I don't have a sealed cap on the oil filler tube
it's just a breather filter where the fresh air gets pulled into the engine. So I would think the half psi of pressure
would drop off to zero. My gut tells me it's a bad distributor shaft
bearing, but I don't feel any play or roughness in the shaft.
FBO tells me it's a sealed bearing that doesn't leak unless it has
excess crankcase pressure. I think they don't want to warranty it.
I'm going to give them an update and see what they say.
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By panel driver - 2 Years Ago
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I put my original points style distributor system back in. I cleaned the area and I'm
going to drive it about 500 miles and let you know what happens. I will post what I find.
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