12-18-2014 | #31 |
Join Date: May 2013
Location: Chicago
Posts: 979
|
Re: Radiator options
Been looking at Porsche 928's (not to purchase) and they all have pusher fans in front.
Looks like that is the key to a cool engine with the a/c on stuck in traffic. https://www.google.com/search?q=pors...ml%3B480%3B360
__________________
1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* |
12-19-2014 | #32 |
Join Date: Jan 2004
Location: Alex VA
Posts: 1,087
|
Re: Radiator options
my temps creep up a bit with the ac on in traffic
the ron davis helps "recover quicker" once moving but to me the stock fans just aren't strong enough to pull the cfm required in stop and go I'm curious why Hib you don't think more fan flow will help? I like the fluidyne core with the heavy duty oil cooler it seems more logical than "stacking" the components and the core is more efficient and a bit thinner so the fans aren't over stressed trying to pull air through the really thick cooling stack which I believe is the problem I got dewitts fans setup which looks nice, when summer arrives I'll let you know if it helps!
__________________
95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) |
12-19-2014 | #33 |
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
|
Re: Radiator options
Some early C4's had a pusher fan from the factory.
Freaken bean counters. Pete
__________________
'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
12-19-2014 | #34 | |
Join Date: Jun 2005
Location: CenCoast California
Posts: 899
|
Re: Radiator options
Quote:
Well...unless your goal is to have ECT below 210 or so with the AC on. If you feel the need for that then you have to look at additional modifications such as an even bigger radiator and, well...maybe more air flow. So, in theory, sure more flow from the fans might further cool the engine but I'm really only interested in what's necessary rather than what's possible. That said, if you were going to go for more air flow, you'd have to upgrade the electric fan electrical to support fan motors which draw more current. Lastly, I didn't know Fluidyne now made a radiator with an EOC built in. If that's the case, I agree, it makes more sense.
__________________
Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
|
12-20-2014 | #35 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
|
Pusher Cooling Fans - Remotely Controlled
Quote:
So the additional Air Flow required to do that (keep the engine in the 200 deg F - 210 deg F Range on a 100+ deg F day) is obviously that Air Flow hitting the front of the ZR-1 at 20-30 mph. I am thinking one can get higher pressurized Air Flow with a Pusher Fan within say 1/4 inch of the front of the ZR-1 Cooling Stack pushing Air through that stack. 1. The First Trick then since we can assume the Tony Davila Pusher Fan Solution works is to refine that solution such that the fix for a temporary LT5 HOT situation on a HOT day does not interfere with the normal Cooling of the ZR-1 Cooling Stack using only Stock Fans. 2. The Second Trick would be to operate that Pusher Fan(s) only when in stop and go traffic on a HOT day using a simplified Relay that can be activate remotely. The Relay wired directly from the battery to the Push Fan. No Modifications to ANY existing Electrical wiring or Electronics. This would make for a very simple and inexpensive Solution to an otherwise complicated problem 12V 15A Relay Remote Control Kit DC Connector 15 amp Heavy Duty 3. The third Trick is to identify and control how much Air (using Stock Dual Fans or Stock Dual Fans with an Auxiliary Pusher Fan) Passes Through the AC Condenser, Oil Cooler, and Radiator rather than go around (through the gap) between the AC Condenser and Oil Cooler.....and through the gap between the Oil Cooler and Radiator. When you turn off the AC, The AC Condenser is not heating up the air passing through. The Oil Cooler is contributing (Oil Temperature Thermostat-Open-203 degree F, Fully open-266 degree F). Engine Lubrication System Functional Discussion 4. Or......install higher flow rate Puller Dual Fans replacing the Stock Puller Fans. But then we have a situation where we are pulling more air 99+% of the time when we do not have to. See LT5 Engine Cooling Issues on Hot Days
__________________
Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 12-20-2014 at 11:35 PM. |
|
01-01-2015 | #36 |
Join Date: May 2013
Location: Chicago
Posts: 979
|
Re: Radiator options
So I went with the Fluidyne and installed a 13" spall pusher fan rated at 1360 cfm in front that I will wire up later to a separate on/off switch for extreme hot weather conditions.
The three row looked easy enough to install but I was not able to guarantee a snug and tight fit without removing the a/c condenser and oil cooler to check clearances. Cutting the lower mounts would have been easy enough using a micro dremel. All my a/c stuff is new and I don't want to touch it so I had to change plans. The swap was pretty easy after taking my time and using a 7mm ratchet wrench to help get the job done. Anyway I have a question for the Fluidyne what size is this fitting? It's not a 1/8" so I am guessing 6mm or such? I am going to call Fluidyne tomorrow but thought I would ask here. This is the line that goes from the fill tank to the radiator. The factory radiator has a male connector the hose slides over. Guess the Fluidyne is not a direct fit after all...
__________________
1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* Last edited by Karl; 01-02-2015 at 08:22 AM. |
01-01-2015 | #37 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,698
|
Re: Radiator options
Karl,
Pretty sure I used a pipe fitting. Had to slip the hose over it. Pete should be able to answer your question. He did for me, I just can't recall the spec right now.
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
01-02-2015 | #38 | |
Join Date: Jun 2005
Location: CenCoast California
Posts: 899
|
Re: Radiator options
Quote:
Beyond that, now that I've read some more of this thread, the argument about fans seems pointless. Pushers, pullers...if people don't think there's enough airflow, add both!
__________________
Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
|
01-02-2015 | #39 |
Join Date: Oct 2004
Posts: 1,889
|
Re: Radiator options
Quote:
Last edited by WVZR-1; 01-02-2015 at 10:07 AM. |
01-02-2015 | #40 |
Join Date: May 2013
Location: Chicago
Posts: 979
|
Re: Radiator options
Typo, I have a 1/8" npt fitting and it is the wrong size.
__________________
1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* |
|
|