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Oil cooler exhaust ducts
Posted by: mattlockwood ()
Date: November 06, 2018 10:25AM

Isthe oil cooler exhaust duct requiredfor proper cooling or is just to route waste heat for the heater?

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Re: Oil cooler exhaust ducts
Posted by: RobertC ()
Date: November 06, 2018 11:28AM

For the oil cooler (or any radiator) to work, air has to flow thru it - taking heat away.

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Re: Oil cooler exhaust ducts
Posted by: mattlockwood ()
Date: November 06, 2018 11:38AM

Thank you for the reply. I understand that. The oil cooler air is routed thru the cooler to a duct that is part of the heater setup, correct?

My question is, do I need the ducting below the oil cooler if I’m not needing any heat?

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Re: Oil cooler exhaust ducts
Posted by: RobertC ()
Date: November 06, 2018 11:46AM

Someone else will have to take up the plus / minus of removing the shrouds.

Depends on how you use the vehicle - though I think even some racers / autocrossers run with the shrouds on.

To me, the shrouds help faster ("better"?) warm up / running of the engine.

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Re: Oil cooler exhaust ducts
Posted by: cnicol ()
Date: November 06, 2018 11:47AM

mattlockwood Wrote:
-------------------------------------------------------
> Thank you for the reply. I understand that. The
> oil cooler air is routed thru the cooler to a duct
> that is part of the heater setup, correct?
>
> My question is, do I need the ducting below the
> oil cooler if I’m not needing any heat?

For the sake of the oil cooler, the ductwork below it is not needed.

However, in most climates, you do need the lower shrouds to regulate and stabilize engine temperature. Without lower shrouds and thermostatic flaps, the engine takes much longer to warm-up leading to reduced fuel economy, increased engine wear, and oil sludging.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: Oil cooler exhaust ducts
Posted by: toms73novass ()
Date: November 06, 2018 11:48AM

My question is, do I need the ducting below the oil cooler if I’m not needing any heat?

NO as long as the upper part is sealed to the fan air and you have a perimeter seal on the engine. (All hot air stays below the engine and can't be sucked up into the fan.)

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
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Re: Oil cooler exhaust ducts
Posted by: Timothy Shortle ()
Date: November 06, 2018 12:52PM

I believe the engineers that designed the Corvair cooling system would say YES.

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