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07-23-2019, 03:30 PM | #1 |
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Location: Colfax, CA
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Help! Why is there excess oil in a crab dist?
Heres the deal, 49-53 merc block, 59A style cam and crab 2 bolt dist.
Every time we drive the car (34 3w) for a short while, the crab cap and rotor get bathed in motor oil fouling the electrical system. More info: 59A style intake with fuel pump and breather mounted above. Any ideas on this one? Stumped... |
07-23-2019, 05:41 PM | #2 |
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Re: Help! Why is there excess oil in a crab dist?
I get this quite a bit, as there isnt any main feed of oil to the timing cover , i think its got to be crankcase pressure caused by lack of ventilation. Check fresh air vent etc... Try removing the vacuum brake line for testing as well........
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07-23-2019, 06:12 PM | #3 |
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Re: Help! Why is there excess oil in a crab dist?
Check out this old thread. You may find some answers.
https://www.fordbarn.com/forum/showthread.php?t=146772 |
07-23-2019, 06:15 PM | #4 |
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Re: Help! Why is there excess oil in a crab dist?
Somebody can check me on this.......seems 59A timing gears cut opposite to 8BA gears so that one set moves oil opposite of the other set?
Which gearset do you have Tim? |
07-23-2019, 06:33 PM | #5 |
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Re: Help! Why is there excess oil in a crab dist?
I’m also wondering if there could be too much oil in it. It’s got a full flow conversion on it and unknown origin of the dipstick.
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07-23-2019, 06:44 PM | #6 |
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Re: Help! Why is there excess oil in a crab dist?
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Last edited by JSeery; 07-23-2019 at 08:47 PM. |
07-23-2019, 08:12 PM | #7 |
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Re: Help! Why is there excess oil in a crab dist?
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07-23-2019, 08:47 PM | #8 |
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Re: Help! Why is there excess oil in a crab dist?
Ok, I'm confused. Thought you stated that the dipstick was of unknown origin. If you know the dipstick is correct then why the concern of being overfilled?
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07-23-2019, 10:05 PM | #9 |
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Re: Help! Why is there excess oil in a crab dist?
If you examine the timing cover you should find 2 little oil holes in the recess for the distributor; one at top to let oil in, and a larger one at the bottom to allow oil to drain back into engine. Check that the return hole is open....
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07-23-2019, 10:13 PM | #10 |
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Re: Help! Why is there excess oil in a crab dist?
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07-23-2019, 11:10 PM | #11 |
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Re: Help! Why is there excess oil in a crab dist?
What Brian said x2. Also, is there too much clearance in the back bushing?
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07-24-2019, 01:14 AM | #12 |
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Location: Sweden
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Re: Help! Why is there excess oil in a crab dist?
I had it a couple of times when people haven´t understood that the bushing absorbs oil and have drilled oil holes through it...
Or someone took the oilwick inside the shaft out while cleaning... |
07-24-2019, 09:42 AM | #13 | |
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Re: Help! Why is there excess oil in a crab dist?
Quote:
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07-24-2019, 10:02 AM | #14 |
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Location: Colfax, CA
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Re: Help! Why is there excess oil in a crab dist?
Thanks everyone. I’ll have a look at it tomorrow evening and report back ... T
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07-24-2019, 03:57 PM | #15 |
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Re: Help! Why is there excess oil in a crab dist?
Another thing to look at, a high pressure oil pump could override the relief valve in the valley ,the valve opens occasionally to lube the timing gears and the back of the distributor ,Most distributors that I have worked on do not have holes drilled at the rear bush possible to reduce this problem .
Last edited by FlatheadTed; 07-24-2019 at 04:03 PM. |
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