Water-cooling top mounted turbos - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Matej · 10-05-2014, 06:40 PM

Hello gentlemen,
Does plumbing water lines into a top mounted turbo have any adverse effects on the water system? I am curious if it causes an air pocket to develop due to the turbo being the highest point in the system, and how this issue is generally combated, if it even is an issue in the first place.
Thank you.

jscherf92 · 10-05-2014, 06:46 PM

A properly burped coolant system shouldn't have any trapped air, regardless of turbo position. It might make your water pump work a little harder but it won't have a noticeable difference.

Matej · 10-06-2014, 05:48 PM

Apparently RX-7's have some magic mechanism that prevents this scenario. I was curious if people use similar contraptions on their S-chassis motors.

jr_ss · 10-06-2014, 07:01 PM

I haven't seen any issues with it. If you have a slight angle in the CHRA it'll burp itself. This also aids in thermal siphoning during cool down too.

10-05-2014, 06:40 PM	#1
Matej Post Whore! Join Date: Feb 2007 Location: N/A Posts: 9,423 Trader Rating: (39) Feedback Score: 39 reviews	Water-cooling top mounted turbos Hello gentlemen, Does plumbing water lines into a top mounted turbo have any adverse effects on the water system? I am curious if it causes an air pocket to develop due to the turbo being the highest point in the system, and how this issue is generally combated, if it even is an issue in the first place. Thank you.

10-06-2014, 07:01 PM	#4
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,410 Trader Rating: (35) Feedback Score: 35 reviews	I haven't seen any issues with it. If you have a slight angle in the CHRA it'll burp itself. This also aids in thermal siphoning during cool down too. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

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10-05-2014, 06:46 PM	#2
jscherf92 Zilvia Junkie Join Date: May 2011 Location: Atlanta, GA Age: 32 Posts: 433 Trader Rating: (7) Feedback Score: 7 reviews	A properly burped coolant system shouldn't have any trapped air, regardless of turbo position. It might make your water pump work a little harder but it won't have a noticeable difference.

10-06-2014, 05:48 PM	#3
Matej Post Whore! Join Date: Feb 2007 Location: N/A Posts: 9,423 Trader Rating: (39) Feedback Score: 39 reviews	Apparently RX-7's have some magic mechanism that prevents this scenario. I was curious if people use similar contraptions on their S-chassis motors.