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> I found the leakMaybe three of you would have a clue.
pcdarks
post Feb 27 2021, 07:56 PM
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I just finished rebuilding my 72 1.7lL and had an elusive oil leak. It would show up on the alternator, crossmember that holds the engine and the shift rod. I have a car lift and was able to get good observation of the area but still could not find the leak. It would not show up on idling the engine but if I took it out and drove it it would leak like a sieve. This is a picture of the block when I rebuilt it and it shows where it was coming from. Just like "where's Waldo" who can find the leak? Hint: it's part of the block on the drivers side.

Attached Image
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bbrock
post Feb 27 2021, 08:25 PM
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Dip stick tube.
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ejm
post Feb 27 2021, 09:07 PM
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Threaded hole for the thermostat pulley bolt
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hcdmueller
post Feb 27 2021, 10:26 PM
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QUOTE(ejm @ Feb 27 2021, 08:07 PM) *

Threaded hole for the thermostat pulley bolt


(IMG:style_emoticons/default/agree.gif)

I may have left the pulley off my bus motor at one point.
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iankarr
post Feb 27 2021, 11:22 PM
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Def thermostat pulley bolt
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bandjoey
post Feb 27 2021, 11:30 PM
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All of the above
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barefoot
post Feb 28 2021, 07:52 AM
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Oil pump, Taco plate cover, front main seal
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brant
post Feb 28 2021, 08:37 AM
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Tons of people have made the same mistake with the pulley
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rgalla9146
post Feb 28 2021, 09:14 AM
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Oil galley plug ?

Ray do you concur ?
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SirAndy
post Feb 28 2021, 11:32 AM
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QUOTE(hcdmueller @ Feb 27 2021, 08:26 PM) *

QUOTE(ejm @ Feb 27 2021, 08:07 PM) *

Threaded hole for the thermostat pulley bolt

(IMG:style_emoticons/default/agree.gif)

I may have left the pulley off my bus motor at one point.

(IMG:style_emoticons/default/agree.gif)

The pulley bolt hole goes all the way through into the case.

Seen it many times on "performance" rebuilds where some misguided soul thought that removing the cooling flaps would somehow make the engine run cooler.
(IMG:style_emoticons/default/screwy.gif)
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Highland
post Feb 28 2021, 11:40 AM
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The “2nd” oil pressure relief valve?
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bbrock
post Feb 28 2021, 11:48 AM
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QUOTE(pcdarks @ Feb 27 2021, 06:56 PM) *

... It would show up on the alternator, crossmember that holds the engine and the shift rod...

... It would not show up on idling the engine but if I took it out and drove it it would leak like a sieve...

... This is a picture of the block when I rebuilt it and it shows where it was coming from.


I'm doubling down on dip stick tube.
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Dave_Darling
post Feb 28 2021, 06:15 PM
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I agree with all the folks who said the pulley bolt hole. Especially since it only showed up while driving, when the oil is sloshing around.

--DD
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GregAmy
post Feb 28 2021, 07:50 PM
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QUOTE(hcdmueller @ Feb 27 2021, 11:26 PM) *

I may have left the pulley off my bus motor at one point.

(IMG:style_emoticons/default/aktion035.gif)

Pissed me off when I figured it out.

(I installed Tangerine's remote oil cooler which removes the flapper system).

Edit: still pisses me off thinking about it later.
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Sycolyst
post Mar 1 2021, 12:42 PM
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This guy....as others have said. Fan pulley bolt. Attached Image
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pcdarks
post Mar 1 2021, 04:05 PM
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QUOTE(Sycolyst @ Mar 1 2021, 11:42 AM) *

This guy....as others have said. Fan pulley bolt. Attached Image


Probably not the only oil leak. Your engine is upside down. Oil is going everywhere.
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