Wet sumping while running
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Re: Wet sumping while running
There's a message from Don Madden describing cleaning out the intersecting drilling's. I didn't fully understand it, I guess you need the crankcase in hand, but it certainly sounded like the problem you have. He fished out bits of gaskets and various goo.
Stan
Stan
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Re: Wet sumping while running
Yes and yes. You must remove the pump spindle. If one were to run a metal rod, like the aircraft length twist drill, I'd mentioned earlier, up the scavenge gallery, and remove the upper slotted screw in the image you attached, you can touch the tip of the twist drill with a piece of wire thru the now open port.
Obviously when I mention a twist drill, it is NOT powered by a drill motor, only light finger pressure. The advantage of a twist drill is to rotate the drill and catch any loose scarf in the twists.
Ciao, DC
Obviously when I mention a twist drill, it is NOT powered by a drill motor, only light finger pressure. The advantage of a twist drill is to rotate the drill and catch any loose scarf in the twists.
Ciao, DC
Dick Casey
The RideNut
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- cfaber
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Re: Wet sumping while running
So you're not recommending I put the twist drill on my impact drill and go to town?Dixter wrote:Yes and yes. You must remove the pump spindle. If one were to run a metal rod, like the aircraft length twist drill, I'd mentioned earlier, up the scavenge gallery, and remove the upper slotted screw in the image you attached, you can touch the tip of the twist drill with a piece of wire thru the now open port.
Obviously when I mention a twist drill, it is NOT powered by a drill motor, only light finger pressure. The advantage of a twist drill is to rotate the drill and catch any loose scarf in the twists.
Ciao, DC
Yeah, I've got it all apart now, and plan to measure everything and probe the drilling in the next day or so. I grabbed some pictures and some initial measurements with my cheapy chinese special micrometer and will be posting them here shortly.
Fix it until it's broken!
Otherwise how will
anything get done?
Otherwise how will
anything get done?
- cfaber
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Re: Wet sumping while running
To answer my own question, yes the pump needs to be pulled, unless you're crazy lucky and the pump is perfectly positioned with the notch right inline with the drilling.cfaber wrote:Does this drilling intersect the drilling for the sump?
And if it does, do you need to pull the pump to access it fully or can I check that it's clear with the pump in place?
Also, it's the bottom of the two screws which allows you to access the scavenge drilling which appears to be at the top of the bore.
Last edited by cfaber on Fri Dec 13, 2019 3:16 am, edited 1 time in total.
Fix it until it's broken!
Otherwise how will
anything get done?
Otherwise how will
anything get done?
- cfaber
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Re: Wet sumping while running
Today I grabbed a 12" 3/16" bit and ran it all the way up the drilling to discover..... Nothing at all. I think stuck the air gun up the drilling hole and to my surprise, a nice steady stream of air coming out of the port in the pump. I did get a telescopic gauge from my buddy (until my set arrives) however it was the wrong size, so I'll check the bore tomorrow. That said while I was digging through the parts that came with the motor I found another oil plug, this one had an aluminum washer a was shorter, same thread, however it had a metric head (so maybe a replacement?) In any event if the bore sizing checks out then I'm thinking that maybe the other oil plug was just a bit too long and it wasn't bottoming out but it was reducing the clearance around the scavenge hole just enough.
So tomorrow I'll head back over to my buddies shop, swap out the telescopic gauge, return his 3/16" drill and try again. if it checks out I'll reassemble and test the theory
So tomorrow I'll head back over to my buddies shop, swap out the telescopic gauge, return his 3/16" drill and try again. if it checks out I'll reassemble and test the theory
Fix it until it's broken!
Otherwise how will
anything get done?
Otherwise how will
anything get done?
- cfaber
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Re: Wet sumping while running
The bore diameter is 0.715"
Scavenge side of the shuttle is 0.714"
Scavenge side of the shuttle is 0.714"
Fix it until it's broken!
Otherwise how will
anything get done?
Otherwise how will
anything get done?
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Re: Wet sumping while running
Colin, did you compare the measurements you took to the Army Inspection Standards I sent you?
The values you posted do not add up.
Ciao, DC
The values you posted do not add up.
Ciao, DC
Dick Casey
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Re: Wet sumping while running
Hi
Wasn't there a photo or two showing the plunger and other components dis-assembled posted earlier?
I was going to comment that the pin was quite depressed in it's screwed housing - is it stuck and if not is the spring installed.
Of course I may have been imagining things again.
Regards Mick
Wasn't there a photo or two showing the plunger and other components dis-assembled posted earlier?
I was going to comment that the pin was quite depressed in it's screwed housing - is it stuck and if not is the spring installed.
Of course I may have been imagining things again.
Regards Mick
- clive
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Re: Wet sumping while running
I think your imagination is running wild Mick there is a photo of the pump but nothing disassembled in this thread. The pin housing you refer to though in the picture on this thread does not look original. I wonder if the internal dimensions are too long. Or if the pump pin matches the dimension of the groove in the pump. Not sure what spring you are referring to as possibly missing.Mick D wrote:Hi
Wasn't there a photo or two showing the plunger and other components dis-assembled posted earlier?
I was going to comment that the pin was quite depressed in it's screwed housing - is it stuck and if not is the spring installed.
Of course I may have been imagining things again.
Regards Mick
clive
if it ain't broke don't fix
if it ain't broke don't fix
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Re: Wet sumping while running
Or did the edit 13,12,19 remove them?
My bad - no spring under the pin -
My bad - no spring under the pin -