charleswrivers
Senior Member
- First Name
- Charles
- Joined
- Nov 3, 2017
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- 43
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- Location
- Kingsland, GA
- Vehicle(s)
- '14 Odyssey, '94 300zx, 2001 F-150
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- 1
It was a necessity before the turbos also had coolant lines hooked up that continues to circulate water after the engine is off. Now a days I don’t really think about it... and I poke along for 15-30 seconds anyway into any parking lot/my neighborhood before I shut the car off so I would have met the old intent anyways. The oldest turboZ I ever had was a ‘86. The original ‘84s has no water cooling and would coke up. ‘85 they added water cooling... though the little hood scoop to assist in cooling stuck around that year and was gone for the rest of the ‘86-89 run. I’ve not heard of any modern car manufacturers w/o coolant going to their turbos. I think the last holdouts ended early/mid-00s.I do the same. This was my first turbo and I got the advice from my nephew actually.
Here's a good explanation I found online as well:
This piece of Garrett’s page is years old but discusses it and how it works despite the water pump not operating when the car shut down. There were a few males that actually had an electric auxiliary pump that’d run after the car shut off to feed to the turbo, but the thermal driving head is plenty to make enough of a trickle to flow to do the job if the lines are setup properly. Fun/Boring fact: we use the same principles in the for modern nuclear reactor designs to get flow through a reactor w/o the use of pumps. It works like a champ, if it’s designed that way.
https://www.garrettmotion.com/racin...-a-turbocharger/water-cooling-for-your-turbo/
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