I drive a manual 3szve daihatsu sirion. since the 3sz has a long stroke & manual doesn’t have a torque converter, I can feel how smooth or rough the engine is through the accelerator. whenever engine oil degrades or oil hasn’t fully warmed up, there’s a friction sensation when stepping on the gas (harder to accelerate).
hence for improved driveability, I’m thinking of retrofitting a coolant to oil heat exchanger to speed up warm up duration, which would especially be useful during traffic congestions. has anyone done something like this, or knows how to do it? thanks.
Sirions equipped with automatic transmissions already have transmission fluid heat exchangers built into the second radiator tank containing cooled radiator coolant. Whether or not the flow capacity will be sufficient is another question.
With brass-constructed radiators, this wouldn’t be a problem whatsoever, given that correct-sized plumbing can get soldered into the coolant’s exit tank relatively easy
uh I mean coolant to engine oil heat exchanger, like using a sandwich plate found in modern Toyotas. but I don’t know which sandwich plate to use & if there’s sufficient space etc.
There should be sufficient room. Maybe, the following could be a helpfull guide?: VDO oil pressure guage and switch? - #36 by Butch_Butcher