SR20 Radiator Flow Rate?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

PeaceOnesxWai · 09-03-2013, 01:43 PM

Anyone know the flow rate per minute or per hour for the radiator fluid?

Trying to get some fittings done with the radiator hoses and need to know the flow rate before I purchase.

The Dude · 09-03-2013, 10:36 PM

Flow rate? Why would you need to know that for hose fittings?

derass · 09-03-2013, 11:00 PM

deleted for misinformation

PeaceOnesxWai · 09-03-2013, 11:46 PM

^I have -16AN currently on my SR but im switching the fittings to dry disconnect fittings. They are more restricted so i need to know the flow rate to know what fitting size I should use. The bigger the size, the more it costs. If I get too small, i restrict water flow.

Also -16 is the minimal AN size the radiator hose should run. AN -20 would almost match the OEM size.

derass · 09-04-2013, 12:05 AM

I would measure the ID of the original rad hoses, then find and use the -AN fittings with the closest ID.

Def · 09-04-2013, 05:57 AM

"Flow rate" is meaningless without knowing the pump curve of the stock water pump. It's all a question of what pressure drop can you tolerate at a given flow rate.

I've done pressure drop tests on many quick disconnect fittings, and my gut feeling without exactly knowing the pump curve is you will need to be running a roughly -20 sized QD that's fairly low restriction to even have a hope of it working.

That said - why QDs on your radiator? Why not just wiggins clamps?

PeaceOnesxWai · 09-04-2013, 01:13 PM

Because racecar lol

Wiggins look cool but Quick disconnects allow for fast fix without the lose of liquids.

ryandriftingfat · 09-04-2013, 04:52 PM

Those fittings are going to get more popular as times goes on. They're brilliant.

Hit up Nigel @ engineeredtoslide.com - he used those fittings and might have some info for you. He probably fields tons of questions like that though.

09-03-2013, 01:43 PM	#1
PeaceOnesxWai Zilvia FREAK! Join Date: Mar 2010 Location: SoCal Age: 33 Posts: 1,220 Trader Rating: (34) Feedback Score: 34 reviews	SR20 Radiator Flow Rate?? Anyone know the flow rate per minute or per hour for the radiator fluid? Trying to get some fittings done with the radiator hoses and need to know the flow rate before I purchase.

09-03-2013, 11:00 PM	#3
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 37 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	deleted for misinformation Last edited by derass; 09-04-2013 at 12:03 AM..

09-04-2013, 05:57 AM	#6
Def Post Whore! Join Date: Apr 2004 Location: Houston, TX Posts: 2,701 Trader Rating: (16) Feedback Score: 16 reviews	"Flow rate" is meaningless without knowing the pump curve of the stock water pump. It's all a question of what pressure drop can you tolerate at a given flow rate. I've done pressure drop tests on many quick disconnect fittings, and my gut feeling without exactly knowing the pump curve is you will need to be running a roughly -20 sized QD that's fairly low restriction to even have a hope of it working. That said - why QDs on your radiator? Why not just wiggins clamps? __________________ S13 Hatch - Goes around tracks quickly DEFSPORT

09-03-2013, 10:36 PM	#2
The Dude Zilvia Junkie Join Date: Sep 2003 Location: TN Age: 40 Posts: 357 Trader Rating: (4) Feedback Score: 4 reviews	Flow rate? Why would you need to know that for hose fittings?

09-03-2013, 11:46 PM	#4
PeaceOnesxWai Zilvia FREAK! Join Date: Mar 2010 Location: SoCal Age: 33 Posts: 1,220 Trader Rating: (34) Feedback Score: 34 reviews	^I have -16AN currently on my SR but im switching the fittings to dry disconnect fittings. They are more restricted so i need to know the flow rate to know what fitting size I should use. The bigger the size, the more it costs. If I get too small, i restrict water flow. Also -16 is the minimal AN size the radiator hose should run. AN -20 would almost match the OEM size.

09-04-2013, 12:05 AM	#5
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 37 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	I would measure the ID of the original rad hoses, then find and use the -AN fittings with the closest ID.

09-04-2013, 01:13 PM	#7
PeaceOnesxWai Zilvia FREAK! Join Date: Mar 2010 Location: SoCal Age: 33 Posts: 1,220 Trader Rating: (34) Feedback Score: 34 reviews	Because racecar lol Wiggins look cool but Quick disconnects allow for fast fix without the lose of liquids.

09-04-2013, 04:52 PM	#8
ryandriftingfat Zilvia Addict Join Date: May 2010 Location: CA Posts: 790 Trader Rating: (10) Feedback Score: 10 reviews	Those fittings are going to get more popular as times goes on. They're brilliant. Hit up Nigel @ engineeredtoslide.com - he used those fittings and might have some info for you. He probably fields tons of questions like that though.