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Water Pumper Questions
Posted by: wvmonza ()
Date: January 23, 2014 05:00PM

A few questions for you guys with V6/V8 powerplants.

What is the best way to get rid of the hot air coming off the trunk mounted radiator? Any chance a heavily louvered hood would help? Hate to cut a car anymore than necessary; cut floor, wheelwells? How to keep out weather?

Best material to use for coolant tubes running under the car; copper, aluminum, stainless?

For interior heat, can you adapt another cars heater core, or is there a universal core/blower?

Thanks

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Re: Water Pumper Questions
Posted by: Ed Dowds ()
Date: January 23, 2014 08:38PM

On my first V8 car I cut out the top of the inner fender panels.
I found that didn't work as well as I thought it would.
I then installed early model engine lid louvers in the trunk lid.
That helped some but made the kick panel vents an inlet for the hot air into the interior.

My present thinking is to duplicate what GM did on the Fiero:
Air inlet under the bumper.
Radiator mounted at an angle with the top forward.
Air exit thru the trunk floor just in front of the verticle panel in front of the gas tank.
The radiator should be sealed to the front opening and the air exiting the radiator should be sealed to the exit opening.
I would use at least one electric fan with a shroud behind the radiator.
Depending on the size of the radiator you may be able to use two fans with shroud.
I recommend using OEM fans from FWD cars with their shrouds.

On my model A street rod I use a fan and shroud from late 80s "A" body GM cars.
I've never had overheating problems since I went to that setup.
The "A" body cars (Celebrity, etc) had either a straight bladed or curved bladed fan. I use the curved one. I think they are supposed to be quieter.

Ed
Hamilton, NJ
66 500 rear 4.3 V6 Corvair
69 350/350 TH Camaro was RS
30 Model A Ford Streetrod 350/400 TH
88 Celebrity Wagon (Daily Driver)

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Re: Water Pumper Questions
Posted by: Tom Z ()
Date: January 24, 2014 02:11AM

> I recommend using OEM fans from FWD cars with
> their shrouds.
>
>
> The "A" body cars (Celebrity, etc) had either a
> straight bladed or curved bladed fan.
--I took 3 of those from J/Y cars,one even has the 'stand-alone' wiring w/ head-located fan switch, it works independent of Ign sw and rest of wiring controlled by engine temp direct from battery..

Tom Z,,Rochester NY

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Re: Water Pumper Questions
Posted by: chanceparker ()
Date: January 24, 2014 06:30AM

My set-up is very similar to a Fiero set-up. Intake below the bumper in the air dam, forward canted radiator with 2 electric fans, shrouded with the air dumping out of the bottom of the trunk, a secondary air-dam under the car and in front of the outlet opening to create low pressue.

It works great. The car has never been hotter than about 200 degrees.

Here are a couple of pics from the build for reference.










Chance Parker
Golden, Colorado
Auminum LS-powered 1965 Corsa Convertible




More Pictures



Edited 1 time(s). Last edit at 01/24/2014 06:38AM by chanceparker.

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Re: Water Pumper Questions
Posted by: Ed Dowds ()
Date: January 24, 2014 11:30AM

Chance-
I forgot to add about the air dam in the front of the car. I used more of a spoiler with it angled about 45 degrees to help shove the air into the opening.

Your aluminum work is very impressive!

Are the two smaller pipes coming off the big pipes near the washer bottle for heater hoses?

Ed
Hamilton, NJ
66 500 rear 4.3 V6 Corvair
69 350/350 TH Camaro was RS
30 Model A Ford Streetrod 350/400 TH
88 Celebrity Wagon (Daily Driver)

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Re: Water Pumper Questions
Posted by: chanceparker ()
Date: January 24, 2014 12:51PM

Thanks Ed,

Yes, heater hoses. They work great. And I wish that was my aluminum work...it's great to know the right peoplesmiling smiley

Chance Parker
Golden, Colorado
Auminum LS-powered 1965 Corsa Convertible




More Pictures

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Re: Water Pumper Questions
Posted by: wvmonza ()
Date: January 24, 2014 04:17PM

Great stuff! Thanks for taking the time to post & add pictures. What are you guys using for heater cores?

Greg

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Re: Water Pumper Questions
Posted by: Ed Dowds ()
Date: January 24, 2014 04:50PM

On my first V8 car I used a heater core I had from my old Renault Dauphine and the Corvair heater blower and cage.

On my present V6 car I'm going to use a Vintage air/heat unit.

Ed
Hamilton, NJ
66 500 rear 4.3 V6 Corvair
69 350/350 TH Camaro was RS
30 Model A Ford Streetrod 350/400 TH
88 Celebrity Wagon (Daily Driver)

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Re: Water Pumper Questions
Posted by: chanceparker ()
Date: January 24, 2014 05:00PM

I used an integrated heater core/fan my father found in an old Land Rover. It has a circular heater core with a small 2-speed fan/shroud attached directly to it.

It works fine but doesn't blow all that hard. It's really just for emergencies. No defrost either.

But it's very small and was an easy solution from a packaging standpoin. Since I rarely drive my car in the cold, it hasn't been an issue.



Chance Parker
Golden, Colorado
Auminum LS-powered 1965 Corsa Convertible




More Pictures

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 24, 2014 07:17PM

My cooling set up is similar to Chance's, except my radiator sits straight up; air inlet is thru an opening below the bumper. I have a single schrouded electric fan and shrouding in and out ou the radiator. Air out thru what was the trunk floor. A Vette C4 high pressure surge tank is plumbed in and works great. I added a dual electric fan above the bell housing that works well getting the heat out of the engine compartment.

I'll attach photos next time I am logged on the computer.

Gary

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Re: Water Pumper Questions
Posted by: wvmonza ()
Date: January 25, 2014 02:21AM

Chance, what type/size is that radiator and where did the fans come from?

Thanks,

Greg

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Re: Water Pumper Questions
Posted by: VairKing ()
Date: January 25, 2014 06:07AM

Thanks for posting the pictures, Chance. I am planning on doing something similar with my V6 Vair. My V8 Vair basically has the same thing, just a bit more capacity. I used a larger radiator, and since I used a rear fuel cell, I used the stock gas tank location as a big area for the hot air to exit. Air comes in from two cutouts below the bumper. I have never had this car overheat even in extreme temperatures.

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 400 HP ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged project stalled

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Re: Water Pumper Questions
Posted by: chanceparker ()
Date: January 25, 2014 07:29PM

wvmonza,

It's a Ron Davis radiator, dual pass, 28X19. The fans came from a 3rd gen Camaro.

Chance Parker
Golden, Colorado
Auminum LS-powered 1965 Corsa Convertible




More Pictures

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 25, 2014 07:34PM

Photos of opening under bumper, radiator etc.

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 25, 2014 07:40PM

Prior posting also shows the Vette C4 high pressure surge tank plumbed in. This continually purges air out of the return line. Works like a charm.

Additonal photo showing the radiator (0ut of a Lincoln Towncar, 6 cylinder).

And fan over bellhousing.

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 25, 2014 07:46PM

Final photo showing shrouding in and out of radiator.

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Re: Water Pumper Questions
Posted by: sportwagon400 ()
Date: January 26, 2014 11:41AM

all looks good here is what was done to mine and works great with the 93 Ford Taurs 3.8 fans pull almost 5000 cfm on high and 2800 cfm on low som far al i have needed has been low speed smiling smiley

ill be sealing up the wheel wells as they are no longer needed

OEM Ford fans seem to pull the most air and have 2 speeds on all of them

Current rides for
Mr Buick
69 GS 400 Convertible Buckets Console Air ( now fully restored )
69 GS 350 Buckets Console Air
69 Buick Special Deluxe 2 dr post fact air
65 Sportwagon 350 SBB 2004R w/air & cruise
65 Buick Special wagon factory air
66 Corvair Corsa Crown mid engine V8 Conversion
69 Dune Buggy 110 HP Corvair powered Crown conversion
65 Pontiac Safari Wagon V8
94 S10

Please tell my wife I have another woman it would be easier to explane!



Edited 1 time(s). Last edit at 01/26/2014 11:45AM by sportwagon400.

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 26, 2014 12:16PM

Not sure what happended with my previous post. Here is a better shot of the under bumper cut out and the Camaro shin spoiler. Also a shot of the under side of the cars. For piping I used 1.75" exhaust piping. Easy for the muffler shops to supply and bend to fit. Also fits one side of the radiator. The other side I believe is 1 5/8", so it takes a reducer or hose with different diameters on each end.

Gary

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Re: Water Pumper Questions
Posted by: Gary Hoffman ()
Date: January 26, 2014 12:51PM

My car originally came with the inner fender wells cut out. I never got rain in the trunk, but after I cut out the floor of the trunk, I closed up the openings.

My car also came with a pretty ugly looking stand-alone heater inside the car. I never needed it (something about the mid-engine car providing plenty of heat in the driver's compartment, even with the engine enclosure being insullated). I took out the heater.

I have seen other kinds of tubing used, and with various diameters. I am not sure it matters what you use and what material you use. I guess you could end up with some anode/diode electrolysis going on (causing corrosion). I am a firm believer in using antifreeze (not straight water). My original engine had so much rusting/corrosion going on in the water jacket side that it clogged up 2 different radiators.

My set up will run at 170 degrees all day long. Once (before I did some relay electrical mods) the radiator fan blew a fuse. I was on grid waiting to go on track. The coolant temp rose to 200 degrees, I got on the track and it actually went down to 195 degrees at speed and high rpms.

Gary

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Re: Water Pumper Questions
Posted by: wvmonza ()
Date: January 26, 2014 04:23PM

Great stuff! Thanks everyone for the detailed information!

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