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remote tranny filler

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sockeyedsushi

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1973 Midget - I tried to install a remote reservoir to fill the tranny, rather than pull the carpet, plug, filler bolt and try not to spill the oil. It works but in reality it is just siphon overfilling the tranny. I know there is a way to "set" the level of the oil in both the reservoir and the trans, but I can't remember the plumbing. I think I need a second hose to equal the height of the oil reservoir. Anyone tried this before? I used a remote tank for the power steering from a Toyota 4 Runner and it fits perfectly on the slanted bulkhead above the passenger compartment next to the heater box. The tranny fitting is a brass 1/2 npt with a crimp on pipe tube. I capped the Toyota can large hole with a copper pipe cap and use the small hole as the feed to the tranny. It even looks like it belongs on the car. Oh did I mention the tranny seal and tailpiece leak nicely. A problem I will eventually repair but being able to fill the trans from the outside of the car seems pretty cool. /ubbthreads/images/graemlins/thirsty.gif
 
Hmmm.. I've heard of perminantly installing a filler tube but I dont know any way you could have a reseveroir unless it was physically mounted at the same level as the tranny. The proper fill level is up to the filler hole (as I'm sure you already know) so adding a resrevoir up higher than that is just going to overfill the tranny, unless you just use it like a funnel. Maybe sombody else knows more about that than me, but thats the only way I can see to do it without getting really complicated. Good luck.
 
I found a website on Physics, differential pressures, I might need to experiment with plumbing the filler to the bottom of the tranny. I need to experiment a bit with the hose diameter. I wish I knew the surface area of the trans cross section to determine the area of the mass of oil in the tranny. I know the volume, height and width. I think I can solve this problem, just need the time. Or not. Still I think it is a good idea for the problem and maybe a good modification for the car.
 
Ok, I figured it out but I don't have the fitting to the bottom of tranny. As I suspected it is possible, but not today. I did install the oil reservoir and it is now an on the car funnel to fill the tranny with the correct amount of clean oil when ever I need to change it. I don't have to pull carpet, rubber plug or the filler bolt. I will just estimate the amount of oil I need to add or just dump it when in doubt and add the 1.3 liters required. Thanks for the help.
 
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