Gooday guy's. My slant 6 has developed a water leak from the bottom of the timing cover. 1965 AP6 valiant (australian).
Since I am new to the slant 6 engine any advice and repair tips would be appreciated.

No water can leak from the timing cover, which seals only oil. Your leak is almost certainly coming from the water pump, which is directly above the timing cover, and dripping round the edge of the timing cover so it looks like it's leaking from there.

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Too many people who were born on third base actually believe they've hit a triple.

Dan is probably right about the water pump, and if he is right the coolant wil be seeping,(or gushing) from the seal around the water pump shaft. But check all the hoses that go in and out of it, plus the little bypass hose that is about 5 or 6 inches long tucked down under all that stuff. You have the lower radiator hose, and the two heater hoses, which can develope leaks from such silly,simple things as a loose hose clamp. Also you can get a leak from a bad seal on the thermostat housing gasket. If you have access to a cooling system pressure pump, pump it up to 13 pounds, and let it sit, while you look and listen. You should see and hear where things are leaking from.

Less likely, but still possible is sometimes the front exhaust manifold stud, which is right next to the thermostat housing can leak, and that would also dribble down the front timing chain cover. Even if you have not taken it out, but have simply loosened it by accident, thinking your wrench was on the thermostat housing bolt, and then retightened, you could possibly break the thread sealant enough to start something there. Ask me how I know about that one.

Sam

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...or from the weep hole, or from the pump-to-block gasket.
Definitely, and that's an easy fix!
mmmm? Only bypass hose on a 225 is about 3" long and it runs from the top of the water pump to the underside of the front of the cylinder head.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

How about water leak inside the bellhousing in a Slant with a 904. Is there freeze plug inside the bellhousing. Thanks Ron Parker











Jaggers Fabrication Slanted Attitude Dart

Nope, only the cam plug and the oil galley plug (threaded).

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Dan wrote: That's the one. Sorry, my memory is not much longer than that hose these days. Just check the hose clamps if you can get to them.

Sam

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