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Old 10-25-2007, 01:18 PM   #1
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Default oil feed question

is it possible to have an oil feed line that is too long? can it be so long that it will not deliver oil? btw this question pertains to a '91 1.6 if that makes a differance.
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Old 10-25-2007, 01:24 PM   #2
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Easily. If the oil feed line is so long that it stretches to the top of Mt. Fuji and back, then it is unlikely the oil pump can produce enough pressure to deliver oil through the line.

However, any length of feed line which can reasonably be fit into the engine compartment of a Miata will not have this problem. You might have issues with routing the line, chafing, etc., but the pump will be able to move oil through it.

Why dost thou ask?
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Old 10-25-2007, 01:29 PM   #3
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joe you ruined it by misspelling dont***haha
but thats a good answer, consider this, some people have rear mount turbos and supply oil back there, so you should not have any issues anywhere within the compartment, the one you need to worry about is the return, it is gravity drained and you should have a somewhat straight hose going from turbo to oilpan, keep this one short and straight and you are good
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Old 10-25-2007, 01:46 PM   #4
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think of an air compressor. i have a 50ft hose. i can supply 60psi to the end of the hose without worrying that it wont get there.
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Old 10-25-2007, 01:50 PM   #5
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Quote:
Originally Posted by whaaamx5 View Post
joe you ruined it by misspelling dont***
Ok, I give up. What did I mis-spell?
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Old 10-25-2007, 02:07 PM   #6
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whaa, you ruined it.
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Old 10-25-2007, 02:59 PM   #7
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i did?
Why dost thou ask?
is that how its supposed to be spelled, keep in mind im foreign and english is my third lannguage....
i sowwy
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Old 10-25-2007, 03:13 PM   #8
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yeah, "why do you ask?" why dost though ask is correcto
and if someones planning a remote turbo, it'd be easier to have a dedicated reservoir for the turbo
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Old 10-25-2007, 03:25 PM   #9
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Quote:
Originally Posted by whaaamx5 View Post
Why dost thou ask?
is that how its supposed to be spelled, keep in mind im foreign and english is
I see.

That sentence was written in a way that borrowed from Early Modern English, the form of speech and writing prevalent in England from the late 1400's until the late 1600's. It is thus associated with the writings of Shakespeare, the King James translation of the Christian Bible, and other popular English works of the time.

In American English, we sometimes use words or phrases from Middle and Early Modern English in a humorous or satirical context. I honestly do not know why this is funny, I guess it's a bit like "No Toad Sexing." It's funny simply because it is.
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Old 10-25-2007, 03:37 PM   #10
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thanks for the 101 on the satirical use of ol'e english...i never heared "dost" before...thanks
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Old 10-25-2007, 07:13 PM   #11
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Getting back to the original topic, El Zeebro, I'm curious as to the nature of this inquiry. Do I assume that you are having oil feed problems? Or are you just planning to coil up 15 or 20 feet of feed hose around the engine?
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Old 10-25-2007, 08:46 PM   #12
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no oil feed problem. just getting to the end of my build and i know something will go wrong. oil feed line length was one concern, i didnt know how much pressure there was at that port. btw how easy is it to hit the oil pickup in the sump when drilling? and would i know it if i did it, without turning the car on? im worried about how far i had to stick the tap in to get a good thread.
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Old 10-25-2007, 09:07 PM   #13
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Quote:
Originally Posted by zebro racing View Post
btw how easy is it to hit the oil pickup in the sump when drilling? and would i know it if i did it, without turning the car on?
It's very easy. I nicked mine slightly, but didn't puncture it. To determine whether you have cut the pickup tube, use your eyes to look through the hole, while using a small flashlight to add light into the hole.
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Old 10-26-2007, 12:23 AM   #14
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Quote:
Originally Posted by whaaamx5 View Post
joe you ruined it by misspelling dont***haha
but thats a good answer, consider this, some people have rear mount turbos and supply oil back there, so you should not have any issues anywhere within the compartment, the one you need to worry about is the return, it is gravity drained and you should have a somewhat straight hose going from turbo to oilpan, keep this one short and straight and you are good
I just thought about something... how do they get the oil from the turbo back to the oil pan? Extra pump in the return line?
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Old 10-26-2007, 12:28 AM   #15
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gonna look tommorow, but what am i looking for, just a tube? and what if i did sever the oil pick up, then what? (just set it on fire?)
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Old 10-26-2007, 12:59 AM   #16
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RickA-yeah i think those that run oil from motor use a pump for drained oil

zebro-then you are pretty much fucked
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Old 10-26-2007, 01:18 AM   #17
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so is the oil return line just gravity drain? because when mine had a hole in the line...it was squirting!!! there was some pressure in there...??..??
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Old 10-26-2007, 01:29 AM   #18
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Probably from blowby pressurizing your crank case.
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