Cool Avanti!

[mfg]

An inexpensive way to improve coolant flow in Chevy V8 powered Avantis is...............?

1) Change water pump.........2) Change thermostat.......3) Change water pump pulley diameter........or.......4) Increase engine idle speed

[studegary]

3

[mfg]

32 minutes ago, studegary said:

3

Sorry, #3 is not correct!

[brad]

The water pump. Nothing will flow until the thrermostat is open. Changing to a bypass thermostat will make a small change. Changing to a large bypass opening in the water pump will make the largest change.

 

 

[mfg]

12 hours ago, brad said:

The water pump. Nothing will flow until the thrermostat is open. Changing to a bypass thermostat will make a small change. Changing to a large bypass opening in the water pump will make the largest change.

 

 

Good thought,....however that's not the most inexpensive way!

Anyone else have any thoughts here?

[mfg]

All done on this trivia question?

[Ron.Strasser]

#4 Increase engine speed.

[mfg]

6 hours ago, Ron.Strasser said:

#4 Increase engine speed.

Sorry no, although raising the idle speed will increase the speed of the coolant, it doesn't really help flow.............

The answer here is #2, changing out the Chevy 'narrow neck' (mouth opening) thermostat to a 1968 Cadillac 'wide neck' unit (which fits the Chevy manifold and thermostat housing), will improve coolant 'flow'!