March 18, 2025, 06:16:41 PM

Author Topic: What mech. waterpumps you guys using?  (Read 12876 times)

Offline zbrown

Re: What mech. waterpumps you guys using?
« Reply #30 on: June 21, 2012, 06:01:47 PM »
what did you want me to measure? the inlet temp of the radiator vs the discharge? at hot idle with fans running? that is the only way i can think you are meaning to measure
8.50/165



Offline Demon

Re: What mech. waterpumps you guys using?
« Reply #31 on: June 21, 2012, 08:45:06 PM »
Ten WOT pulls and braking isn't going to generate much heat, at least no where as much as 20-25min of beating a car with half your power around a road course. On a road course you are never really out of upper rpms. Drag cars and street cars have nothing compared to road race cars when it comes to radical ducting, materials, and radiator design. I'll try to find out what the Chevy powered road race cars run this weekend.
'93 RX7 (co-project with macnewma)
'95 Supra Turbo Billet GT42-76

Offline frijolee

Re: What mech. waterpumps you guys using?
« Reply #32 on: July 03, 2012, 08:56:17 PM »
Found a cut sheet on evan's full ls product line:

http://www.evanscooling.com/assets/ECS-LS1-Product-Info-web.pdf
LS2 stroker FC, Mandeville big brakes, widebody, etc
Build thread:  http://www.norotors.com/index.php?topic=1274.0
www.roninspeedworks.com

LargeOrangeFont says: "Joel is right, and I love Joel. But his car sounds like the wrath of God."   ;)

Offline kartermdb

Re: What mech. waterpumps you guys using?
« Reply #33 on: July 03, 2012, 11:11:54 PM »
Thats a good document to save. 

I am not running the same power as the rest of you, but here is what I have found out with my car.  Stock L33 with ported ls6 intake, headers, makes 290/332 whp/wtq on a mustang dyno.

I am running a stock water pump with no thermostat, griffin 26.5" x 17 or 18" radiator, 24 lb radiator cap, ducted with a single fan setup out of a fiero.  I saw a high of 218 after a hard 25 min session at sebring a few weeks ago.
 
I also measured a 10 degree difference between inlet and outlet on the radiator once I pulled back into the pits.

Offline spacevomit

Re: What mech. waterpumps you guys using?
« Reply #34 on: July 03, 2012, 11:57:28 PM »
I am gonna go with:
-OEM water pump (AC Delco?), newer style thermostat neck, Corvette pulley/F.E.A.D. (LS3 'Vette or a late LS1 pump (with new style thermostat neck) with 05+ Corvette style pulley, if I can somehow do that for cheaper)
-stock FD fitment Fluidyne radiator, one-off mounts
-significant ducting
-no fan
-Mostly Water ™




Offline burtoncr

Re: What mech. waterpumps you guys using?
« Reply #35 on: July 04, 2012, 03:09:10 AM »

Offline spacevomit

Re: What mech. waterpumps you guys using?
« Reply #36 on: July 04, 2012, 01:34:49 PM »
Perhaps I should say, I'm going to try to get away with it - half expecting I'll have to add one later - I might end up doing more street driving than I intended. After all, I will probably want to drive it to far flung tracks, since I don't have a real tow vehicle.

Offline digitalsolo

Re: What mech. waterpumps you guys using?
« Reply #37 on: July 04, 2012, 10:03:19 PM »
No fan?

You came from BMWs I'm guessing?
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline spacevomit

Re: What mech. waterpumps you guys using?
« Reply #38 on: July 05, 2012, 12:33:15 AM »
Kinda, I took apart an E36. There's some pics of the engine on my build thread (for some reason). Why, is that a BMW thing? You know, I think yes, the first time I heard of that, it was a BMW track car - but I don't remember it being "a thing" for BMWs; if that's the case, it's news to me. A common thing was to delete the mechanical fan and add an electric one in it's place. I have always just associated it with (road) racing in general (F1 cars, for example, don't use an E-fan mounted to the radiator).

Even though it's not a daily driver, I have to admit, I may get caught in traffic at some point, when it happens to be hot out. I believe my initial setup will be lucky to have much over 300whp. Fluidyne says their radiators should cool better than just any old radiator of the same size, because they fit a lot of surface area in the same space, so that can't hurt. Most setups have room for improvement in the ducting department, naturally. If I can pull off proper ducting, that would also help.

Perhaps an electric fan is inevitable, and I'm being naive, but let's just say I'm not ruling out the idea of running without a fan, out of hand. I was toying with the idea of CO2 cooling - I could set it up to spray the radiator, which I could activate in an emergency.

....OR, I'm just subtly, almost unconsciously trolling everyone. :yay:

Offline Demon

Re: What mech. waterpumps you guys using?
« Reply #39 on: July 05, 2012, 06:36:32 AM »
Race cars don't have radiator fans because they never sit idle. When they do get stopped, they get hot in a hurry.

You will need a rad fan if you only drive it once on the street a month.
'93 RX7 (co-project with macnewma)
'95 Supra Turbo Billet GT42-76

Offline largeorangefont

Re: What mech. waterpumps you guys using?
« Reply #40 on: July 05, 2012, 11:42:19 AM »
Let me reiterate... YOU NEED A FAN!
Quote from: cool
Sell it to spacevomit.  He'll finish it.

Offline MPbdy

Re: What mech. waterpumps you guys using?
« Reply #41 on: July 05, 2012, 12:06:53 PM »
I'm late to the party, but higher velocity through the radiator will have a better convective heat transfer coefficient fwiw.

Offline largeorangefont

Re: What mech. waterpumps you guys using?
« Reply #42 on: July 05, 2012, 12:17:52 PM »
Thats a good document to save. 

I am not running the same power as the rest of you, but here is what I have found out with my car.  Stock L33 with ported ls6 intake, headers, makes 290/332 whp/wtq on a mustang dyno.

I am running a stock water pump with no thermostat, griffin 26.5" x 17 or 18" radiator, 24 lb radiator cap, ducted with a single fan setup out of a fiero.  I saw a high of 218 after a hard 25 min session at sebring a few weeks ago.
 
I also measured a 10 degree difference between inlet and outlet on the radiator once I pulled back into the pits.

Awesome info. What was ambient temps that day? I have a stock LS1 style pump on the car now with a 25% underdrive pulley and a 26.5X16 dual pass radiator, full ducting and dual fans. I am going to drill the thermostat straight away before running the car to gain some flow and see how that works. I will remove it completely if I have problems before I go to an aftermarket pump.

I also will have a vented hood, and I think I will be ok with the stock pump if the airflow is managed efficiently.
Quote from: cool
Sell it to spacevomit.  He'll finish it.

Offline theantirotor

Re: What mech. waterpumps you guys using?
« Reply #43 on: July 05, 2012, 12:50:37 PM »
Kinda, I took apart an E36. There's some pics of the engine on my build thread (for some reason). Why, is that a BMW thing? You know, I think yes, the first time I heard of that, it was a BMW track car - but I don't remember it being "a thing" for BMWs; if that's the case, it's news to me. A common thing was to delete the mechanical fan and add an electric one in it's place. I have always just associated it with (road) racing in general (F1 cars, for example, don't use an E-fan mounted to the radiator).

Even though it's not a daily driver, I have to admit, I may get caught in traffic at some point, when it happens to be hot out. I believe my initial setup will be lucky to have much over 300whp. Fluidyne says their radiators should cool better than just any old radiator of the same size, because they fit a lot of surface area in the same space, so that can't hurt. Most setups have room for improvement in the ducting department, naturally. If I can pull off proper ducting, that would also help.

Perhaps an electric fan is inevitable, and I'm being naive, but let's just say I'm not ruling out the idea of running without a fan, out of hand. I was toying with the idea of CO2 cooling - I could set it up to spray the radiator, which I could activate in an emergency.

....OR, I'm just subtly, almost unconsciously trolling everyone. :yay:


For starters..... there are way too many words in this post. (as well as most of your others, no offense)


There are probably 50 totally inconvenient ways to get around using a radiator fan for a street car.


If you are going to drive your car on the street, you should have a fan.  The end.
:bacon:

Offline spacevomit

Re: What mech. waterpumps you guys using?
« Reply #44 on: July 05, 2012, 01:56:09 PM »
Yeah, you're right, I agree. You're all right. Thanks for letting me bounce that off you guys lol.