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Post by BESRK on Mar 7, 2007 20:17:10 GMT -5
That run I made to Crozet (I think it was November) where my buggy took a hard flop on a night run, I sat in the seat on my side with tranny fluid pouring out my vent line and soaking my right foot. After that night, I kept toying with the idea of coming up with some sort of check valve that would prevent fluid from coming out of vent lines once the line goes past horizontal and starts to point down. Took me a couple of tries on the lathe but I've got it about where I want it. Getting the check ball to seal was kinda difficult. Basically, I drilled the length of the tube with a small drill bit. Then, I come behind it with a bit that's slightly larger than the checkball. When the valve is tipped over, the checkball seals against the smaller hole. A small roll pin is punched thru the tube to keep the checkball from falling out. The whole thing is made of aluminum and hardened stainless steel. I filled it with tranny fluid and let it sit for about an hour with no leakdown.. I think that's pretty good. Now, I need to try it with fuel. The one in the pic is 2" long and set up for a 3/8" hose. I think I'm going to shorten it by about 1/2".. Thoughts?  |
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Post by KarlVP on Mar 7, 2007 21:46:47 GMT -5
That's pretty cool.
I use the "balloon animal" balloons on all my vent lines. I double them up and so far, they work pretty good.
I would like something better for my fuel filler though.
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Post by 87B2XLT on Mar 7, 2007 22:22:07 GMT -5
That looks pretty cool -- it's always a good idea to figure out a way to prevent fluids from leaking out of axles, transmissions, engines... and polluting things. Also a good idea to re-locate certain vents and all so water won't get ingested by things. I'm not sure if you'd need one that long for anything, I would be thinking more along the lines of 1" in length, however, I guess the longer setup would work. Do you also have plans for something similar for the engine and other things, Eddie? One of the big headaches to deal with that I can think of is the PCV piping on the valve covers... because you don't want to block flow for things to vent when they're supposed to, yet, you don't want oil coming out of the engine when you flop or roll over.
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Post by BESRK on Mar 8, 2007 7:38:04 GMT -5
I did shorten it down to about 1.5" long. As for the PCV hose.. hmmmm... let me think on that one.
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Post by CORE 4WD on Mar 8, 2007 10:18:53 GMT -5
Won't the factory valve prevent leak back? Or must it have engine vacuum? Would oil pushing on the ball open or close it? Haven't messed with one in a while...
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Post by 87B2XLT on Mar 8, 2007 10:42:18 GMT -5
Going back to PCV / Breather hoses from the valve covers... I think the big part of it would be to get the grommets on the valve covers to seal and keep oil in and maybe along with some sort of check valve or something, if needed. The factory PCV valve may prevent leakback on the one side -- can't remember if SBCs have the PCV hose and then another hose that goes to the breather / filter ? May not be anything necessary other than sealing up the grommets on the valve covers so the oil doesn't leak from them and so the PCV valve doesn't come out, especially during a flop or rollover. I was just throwing thoughts and ideas out for feedback as well.
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