Re: Oil Leak from Water Pump Solved

["Mr. Leslie Wong" <lesliewong@domain.elided>]

Erik Wood wrote,

"...I asked the group for input into a substantial oil leak from the front
of my 2-liter immediately after a rebuild...

"...It seems that many aftermarket water pumps have a steel pin press fit
into the tach drive housing directly beneath the gear.  It apparently isn't
uncommon for the pin to damage the aluminum on the way in and create a leak.
So, I did as Mike suggested, drove the pin out, put high-temp RTV under it
and reassembled..."


I didn't understand where the oil was leaking from on your water pump or
where the pin damages the aluminum on the way in.

I just replaced the water pump in my 1979 Sprint Veloce (while the engine
was in the car) and I have noticed some oil running down the middle of the
oil pan (not a stream but more than a few drops).

I didn't pay too close attention to the construction of the tach drive cover
part of the water pump since my car has an electronic tach. I put the block
off plate over the tach drive with Hylomar gasket sealant on the gasket. I
also used Hylomar on the water pump gasket. Is the steel pin you're talking
about under the block off plate?

If the block off plate is secure and sealed over the tach drive should I be
able to rule out the steel pin as a cause of a leak?

Thanks for any answers.

Leslie Wong
1979 Alfetta Sprint Veloce
Pacific Grove, CA
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