Radiator on my Gt40
- Thread starter Vinny P
- Start date
Hi Ian, The radiator was originally inlet upper outlet lower from RCR, I modified it so both inlet and outlet are on the bottom. Someone had mentioned to me that you need a specially designed radiator for it to function properly, so now I am unsure if this was the correct thing to do. I needed the clearance for my hoses and did not want to modify the body. I am running a conventional water pump and wondering if this would be enough for good circulation or would I need to install an electric water pump? Thank you for getting back to me.
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Hi Vinney,
Nice looking car! The modified radiator will work just fine so long as the outlet side is at the top of the tank and the inlet on the bottom of the other tank.
Doesn't matter if the flow is right to left or vice versa. What we did for in this situation is fabricate a tight bend radius tube to bring the return outlet down and heading for the central tunnel. Hope this helps
Cheers
Ian
Nice looking car! The modified radiator will work just fine so long as the outlet side is at the top of the tank and the inlet on the bottom of the other tank.
Doesn't matter if the flow is right to left or vice versa. What we did for in this situation is fabricate a tight bend radius tube to bring the return outlet down and heading for the central tunnel. Hope this helps
Cheers
Ian
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Lee Patterson
Supporter
Was the RCR radiator not a triple pass setup and by moving the inlet pipe you have now created a weakened dual pass with a dead end at the top? Maybe I am missing the config here.
All good points for sure. There have been single pass cross flow radiators set up that way, my concerns were exacltly what Lee illustrated.
So is the question is if Vinnys' rad is a single pass cross flow type, will it be less efficient if both outlets are at the bottom? Most likely IMHO
Thats why we went with the top outlet being plumbed with a downpipe to look as much like of the original GT40 radiator pipes plumbing.
The alernative is the rather costly daul pass verticle flow radiator as per the original cars.
Cheers
So is the question is if Vinnys' rad is a single pass cross flow type, will it be less efficient if both outlets are at the bottom? Most likely IMHO
Thats why we went with the top outlet being plumbed with a downpipe to look as much like of the original GT40 radiator pipes plumbing.
The alernative is the rather costly daul pass verticle flow radiator as per the original cars.
Cheers
Lee Patterson
Supporter
I can't imagine Fran designed his car with a single pass rad. I would call RCR and confirm that it is a triple pass. If so, its now ruined I believe.
I just ordered a new 3-row radiator. Thanks for the information. I should have checked before modifying the radiator I had. I have another question, my engine builder installed a Ford Racing Water Pump, Mechanical, Short, Street Rod, Standard-Volume, Aluminum ( how it was described on the invoice). Will this be enough for a mid-engine setup? Or should I install a high-output water pump?
Lee Patterson
Supporter
More than sufficient for such a motor. I have it on my 302.
If measure the temperature on the radiator with a thermocouple meter during just when you start the engine, by moving the sensor between bottom, middle and top position, you shall see if you get a progressive temperature going left to right on the 3 levels --> 3 rows, or the same behavior, left to right --> single row.
Lee Patterson
Supporter
Who did you order your new radiator from? Have a link?
https://www.ebay.com/itm/401177216109 There are a few vendors on eBay. This seller accepts offers so that you can save a few bucks, too. A few vendors are offering 2,3,4 row fadiators. The radiator width is 1/2" narrower, and the height is 1/4" lower than the radiators supplied by RCR. Just type in GT40 radiators (in the ebay search bar) on eBay if you want to research other options.
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Lee Patterson
Supporter
No following the design in that picture. The inlet and outlet are both on the bottom (or top) but the tubes run across the unit. Not sure how water would flow or ever be cooled like that.
Look carefully at the unit in the link. In order for both inlet and outlet to be on the bottom, the cooling tubes run the opposite direction and there is a baffle inside the tanks to create a dual pass design.
jpracing.uk
Look carefully at the unit in the link. In order for both inlet and outlet to be on the bottom, the cooling tubes run the opposite direction and there is a baffle inside the tanks to create a dual pass design.
SERCK Performance Copper & Brass Radiator for Ford GT40
SERCK Performance Copper & Brass Radiator for Ford GT40 SERCK Performance Copper Brass Radiator for Ford GT40 This is a performance radiator handcrafted
jpracing.uk
Hi Vinny, i was loolong at these radiators and the price just seems to be too good to be true. Have you received the rad yet (i know its coming from china) what does the quality actually look like?
For the price it might be worth a punt anyway and just swap it later if its not up to the job?
The only problem I see, without actually seeing one in person is that it shows the inlet and outlet diameters at 1 3/8". Most radiators I have are either 1 1/2" or 1 3/4".
Regards Brian
Regards Brian
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