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Post by Armageddous on Jul 6, 2015 14:42:33 GMT -5
I think my sump is 4.5L.
The low drop switch would only work with a setup like matts where if it's not making that pressure there is definitely a problem somewhere.
Stock the ef12 will not make consistent pressure and you'd get a lot of false cut outs. You'd end up setting the cut pressure to 5psi or something, but by that point the engine would be no good anyways.
Terry
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Post by madmatt on Jul 6, 2015 15:42:50 GMT -5
Update,
Bit more running time today. I have some minor plumbing issues I think I need to sort. The relief valve is working too well... Seems as rpms build I'm loosing more volume, as I have 60lbs of idle pressure and only 45 at 6000 rpm... may need to make some minor plumbing changes, or change spring rates on the valve, and then preload...
This will probably mark the end of actual updates for a long while, as in a week I leave for Europe for a year, and the car will be moth balled until I return.
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Post by dwhacks on May 14, 2016 2:26:46 GMT -5
Just wanted to say that this thread has inspired me to buy a rusty justy. Keep up the great work! I'm really excited to see where you get with the sump setup.
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Post by madmatt on Aug 11, 2016 23:06:46 GMT -5
Hey Folks. I've been a bit absent around here... too much on the go, not a lot of Justy time I have returned from the amazing European community, and am back in La Belle Province. I could write for hours on why Europe is so much better... but I'll bite my tongue, and think about something good to say about North America Anyway! progress tonight! The plumbing issue was not related to the relief valve... but rather I had a collapsing suction line between the oil reservoir in the back and the pressure pump of the dry sump unit. I switched out the soft line for a hard line, and all is good!!! Some more work to do, and then. Floggin' time!
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Post by madmatt on Dec 6, 2016 11:26:04 GMT -5
Update... Little Justy moves on her own power again! Still testing the dry sump, and I have a few leaks (She's like a British Leyand!) to sort around the oil pan. I used the cork gasket... dumb. Leaking like a sieve. Idle oil pressure is set to 40lbs. It climbs to 60 at 5000 rpm. Me likey likey very muchy muchy... I think the coolest thing is to change the oil now, I open a ball valve behind the passenger side seat, and the oil drains out the floor drain! No driven in anger antics yet, but getting there.
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Post by gearheadeh on Dec 6, 2016 13:29:07 GMT -5
Update... Little Justy moves on her own power again! Me likey likey very muchy muchy... I think the coolest thing is to change the oil now, I open a ball valve behind the passenger side seat, and the oil drains out the floor drain! No driven in anger antics yet, but getting there. the oil drains out the floor drain! HA ha ha,----- is that inspired from the last time you watched a James Bond movie??
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Post by madmatt on Dec 7, 2016 12:32:16 GMT -5
But I don't think an oil slick on gravel has quite the same effect... and, if they are behind, I'm beating them anyway! some pics from earlier. The seat pretty much is over top of the valve when it's in place. And the lines going through the firewall Never mind the messy floor!
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Post by jasin on Dec 7, 2016 14:54:26 GMT -5
I love the idea of dry sump in justy, i was thinking about it.
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Post by madmatt on Dec 7, 2016 17:05:28 GMT -5
I love the idea of dry sump in justy, i was thinking about it. Yeah, we'll see how well my garage engineered thing works. But "in theory" this is the end to all the motor problems I've ever had...
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Post by dwhacks on Dec 19, 2016 20:23:51 GMT -5
Any chance you have parts numbers on those pumps? and/or some more photos of how you got the shafts together. I was thinking of cobbling something together for the oil pressure in my justy!
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Post by madmatt on Dec 22, 2016 11:04:22 GMT -5
Hey,
Sure, the pumps are melling 55's (small block chevy). The "scavage pump" is a high flow with has 50% more volume per revolution.
I have a bunch of pics I'll post when I'm on my computer.
If I had access to a lathe I might use a different pump set... but this was easy and no "machining" required.
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Post by dwhacks on Dec 23, 2016 0:35:00 GMT -5
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Post by madmatt on Dec 23, 2016 19:00:08 GMT -5
Yeah, I actually drilled out the sides of the housings for the inlets and outlets... I'll post some pics soon.
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Post by dwhacks on Dec 23, 2016 19:26:25 GMT -5
Well then! now I'm even more excited!
I was thinking of mounting just one external pump, removing the stock pump, and keeping the wet sump system and adding a pressure regulator of sorts. I don't need "racecar" performance, but I would like a steady supply of oil pressure!
Looking forward to more pics of the pump setup!
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Post by jasin on Dec 24, 2016 3:23:49 GMT -5
Well then! now I'm even more excited! I was thinking of mounting just one external pump, removing the stock pump, and keeping the wet sump system and adding a pressure regulator of sorts. I don't need "racecar" performance, but I would like a steady supply of oil pressure! Looking forward to more pics of the pump setup! That is exactly what i am thinking about. Do you have any pump already choosen?
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Post by madmatt on Jan 8, 2017 2:06:39 GMT -5
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Post by madmatt on Feb 2, 2017 16:58:35 GMT -5
Quick check-in... Justy ran in moderate anger a few weeks ago. A rally-cross that got cancelled due to bad weather (slushy course we would have destroyed). But I ran the beast up and down the entrance road for a bit. Some issues, mostly related to my poor machining skills. The pressure relief locked up, and I spiked to 120 psi of oil pressure. That blew out my poor seal where the pumps mate to the plate, and spewed oil all over the block... But... it works! I think I have the relief valve working better, and hope to have it out soon. Moral... this is not a project for the daily driver you need tomorrow... or if you're short on time. But I think in the end it will function quite well. It has been a steep learning curve. I know why proper dry sumps are $2500! Oh and... A Justy at 7000 rpm with headers and triple carbs... makes a most terrifically wonderful sound.
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Post by justine on Feb 3, 2017 11:15:01 GMT -5
Great to see progress on this! 120psi is unheard of on these! Even if it was just do to a blocked relief valve haha. Keep up the good work man keep exploring this little machine!
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Post by madmatt on Feb 3, 2017 19:38:57 GMT -5
lol, yeah... I blocked the relief once and got oh yeah... 40lbs... at start up, with 20w50.
My 120 lbs is on 10w30!
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Post by madmatt on Feb 4, 2017 21:15:44 GMT -5
It WORKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Dang!
So I drilled out a vent from above the plugger to the relief passage. Lapped the pump housing faces and used a thin paper gasket with grey silicone. Held up to 120 psi of air over oil... so thought I'd try it out again.
Went out to a MCO snowcross today. Well, the last hour or so. Still had to put the pump in this morning and test it yadda, drive 2.5 hours... yadda.. got 3 runs in plus some puttering around the place.
Steady Eddie at 55 lbs. I might up it a bit? But happy to report it seems to function.
More testing, and Lanark Rally?
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