'second radiator' idea freakin awesome - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*dawagarage* · 06-23-2010, 01:06 AM

im jacking this from the NICO forums.... as far as i know this gentleman isnt on here? so i just wanted to share this awesome nugget.
I added a second radiator to my S13 to fix cooling issues. : 240sx General Discussion
basically, he's running an LS motor & although he has an upgraded radiator, is still having issues w/ heat. so he takes the a heater core and motorcycle fanto create a secondary radiator!! this would be a less expensive option for those who didnt have enough $ to upgrade their current radiator.

*fliprayzin240sx* · 06-23-2010, 01:58 AM

I would have tried out a cross flow radiator first before doing that. The issue with having a radiator where the upper and lower neck are on the same side is that the coolant sometimes doesnt stay in the radiator long enough to cool down. Well atleast compared to an SR radiator where the necks are on the opposite sides, coolant has a longer distance to travel and sits in the radiator longer.

Also, ducting does wonders...the more air you force thru the radiator instead of around it, the better itll work. Start by looking at the gap between the fan shroud and the radiator. If you have any open gap, thats air going around the radiator and not thru it. After that, check the gap in front of the radiator and around it. You want to force as much air flow into the radiator and not go around it. There is no point of adding a cooling panel up top if the bottom and sides are open...Air will just flow that way. Remember, itll follow the least resistance.

sirfallsalot243 · 06-23-2010, 06:35 AM

Not bad for a $75 investment.

And he's on here, just probably more active on NICO or TST.

codyace · 06-23-2010, 12:01 PM

I wonder if he realizes LSx motors naturally run 'hot' when comparing it to other cars...I mean 210-220 is normal for those things.

fliprayzin240sx sums it up best, proper ducting is crucial

*dawagarage* · 06-23-2010, 12:26 PM

yes proper ducting is mandatory for maximum cooling efficiency & bringing up the greater benefits of a cross flow radiator is a good point but that doesnt detract from the fact that a second radiator is a great, ingenious idea. no disrespect to people more knowledgable on this subject than i but this wasnt meant to be 'cooling 101.'

06-23-2010, 01:06 AM	#1
dawagarage Premium Member Join Date: Sep 2006 Location: Bremerton, WA Age: 39 Posts: 2,037 Trader Rating: (23) Feedback Score: 23 reviews	'second radiator' idea freakin awesome im jacking this from the NICO forums.... as far as i know this gentleman isnt on here? so i just wanted to share this awesome nugget. I added a second radiator to my S13 to fix cooling issues. : 240sx General Discussion basically, he's running an LS motor & although he has an upgraded radiator, is still having issues w/ heat. so he takes the a heater core and motorcycle fanto create a secondary radiator!! this would be a less expensive option for those who didnt have enough $ to upgrade their current radiator.

06-23-2010, 01:58 AM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	I would have tried out a cross flow radiator first before doing that. The issue with having a radiator where the upper and lower neck are on the same side is that the coolant sometimes doesnt stay in the radiator long enough to cool down. Well atleast compared to an SR radiator where the necks are on the opposite sides, coolant has a longer distance to travel and sits in the radiator longer. Also, ducting does wonders...the more air you force thru the radiator instead of around it, the better itll work. Start by looking at the gap between the fan shroud and the radiator. If you have any open gap, thats air going around the radiator and not thru it. After that, check the gap in front of the radiator and around it. You want to force as much air flow into the radiator and not go around it. There is no point of adding a cooling panel up top if the bottom and sides are open...Air will just flow that way. Remember, itll follow the least resistance. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

06-23-2010, 12:01 PM	#4
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	I wonder if he realizes LSx motors naturally run 'hot' when comparing it to other cars...I mean 210-220 is normal for those things. fliprayzin240sx sums it up best, proper ducting is crucial __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

06-23-2010, 06:35 AM	#3
sirfallsalot243 BANNED Join Date: Nov 2007 Location: Doylestown, PA Age: 36 Posts: 468 Trader Rating: (3) Feedback Score: 3 reviews	Not bad for a $75 investment. And he's on here, just probably more active on NICO or TST.

06-23-2010, 12:26 PM	#5
dawagarage Premium Member Join Date: Sep 2006 Location: Bremerton, WA Age: 39 Posts: 2,037 Trader Rating: (23) Feedback Score: 23 reviews	yes proper ducting is mandatory for maximum cooling efficiency & bringing up the greater benefits of a cross flow radiator is a good point but that doesnt detract from the fact that a second radiator is a great, ingenious idea. no disrespect to people more knowledgable on this subject than i but this wasnt meant to be 'cooling 101.'