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2013-14 Shelby GT500
Confused About Intercooler Upgrades
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<blockquote data-quote="Catmonkey" data-source="post: 16436334" data-attributes="member: 124025"><p>Almost all intercooler bricks are dual pass. Any single pass will have an inlet in the front and an outlet out the back, or vice versa. That complicates hose routing for the OEM. The dual pass intercooler has two chambers, an upper and a lower chamber (note, the diagram below). The intercooler is zoned internally into an upper and a lower chamber between the inlet and outlet. The coolant flows through the bottom half of the intercooler then turns 180 degrees in a cavity to the rear of the intercooler and exits through the upper chamber. In effect the coolant is heated up on the first pass and heated again on the second pass. A single pass just moves coolant in and out, which is likely more efficient. But now you need to route the exiting coolant around the supercharger. There's not an abundance of space to the rear of the engine, and frequently made tighter with a bigger supercharger. </p><p></p><p>The J2 mod is all about moving more coolant through the intercooler without modifying the intake. They do that by providing larger tubes to the intercooler and can either machine your intercooler to accept those or provide their own. They claim their intercooler outflows a modified stock intercooler by 45% in terms of coolant flow. To get any benefit out of the mod, you need to change the remainder of your intercooler lines and your heat exhanger's inlet and outlet to 1", or 1.25". If it goes through a reservoir, yep that too. It's going to take a much larger pump than used with typical 3/4" intercooler systems to move more coolant. Any i.d. throughout the system that is smaller than .875" will become a restriction. The Stewart pump has proven to be a pump that can move liquids at high rates. Just bolting the EMP pump on a 3/4" is likely to only improve flow rates by 10-20%. Increasing the tubing fron 3/4 to 1" will at at a minimum double the gallons per hour flow rate for your intercooler, which translates to more heat removed from supercharger discharge. The best you can hope for is ambient coolant temps going into the intercooler, unless you use ice somewhere in the system.</p><p></p><p>Here's J2's replacement tubes next to the factory tubes. The i.d. on the left is .55", left is .87". The area of the larger i.d. is over 2.5 times that of the stock i.d. I reamed my tubes out to a .625" i.d., but it's not earth shattering in terms of gpm improvement. </p><p></p><p>[ATTACH=full]1646044[/ATTACH]</p><p></p><p>Location of tubes are #24 in the diagram below.</p><p></p><p> [ATTACH=full]1646051[/ATTACH]</p><p></p><p>Here's what you can expect. This video is a Cobra, but the intercooler systems are surprisingly similar. That smaller diameter tube in the first pick is the same part used in the Cobra engine by Ford. I could be mistaken, but I see a very similar piece in the 2020 GT500 intake. Bet you don't see that much turbulence in your reservoir. Stock flow rate might be 5 gpm. Bottom numbers on the flow meter is gpm.</p><p></p><p>[MEDIA=youtube]yjbM9FKqPA0[/MEDIA]</p><p></p><p>It's only money, right?</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 16436334, member: 124025"] Almost all intercooler bricks are dual pass. Any single pass will have an inlet in the front and an outlet out the back, or vice versa. That complicates hose routing for the OEM. The dual pass intercooler has two chambers, an upper and a lower chamber (note, the diagram below). The intercooler is zoned internally into an upper and a lower chamber between the inlet and outlet. The coolant flows through the bottom half of the intercooler then turns 180 degrees in a cavity to the rear of the intercooler and exits through the upper chamber. In effect the coolant is heated up on the first pass and heated again on the second pass. A single pass just moves coolant in and out, which is likely more efficient. But now you need to route the exiting coolant around the supercharger. There's not an abundance of space to the rear of the engine, and frequently made tighter with a bigger supercharger. The J2 mod is all about moving more coolant through the intercooler without modifying the intake. They do that by providing larger tubes to the intercooler and can either machine your intercooler to accept those or provide their own. They claim their intercooler outflows a modified stock intercooler by 45% in terms of coolant flow. To get any benefit out of the mod, you need to change the remainder of your intercooler lines and your heat exhanger's inlet and outlet to 1", or 1.25". If it goes through a reservoir, yep that too. It's going to take a much larger pump than used with typical 3/4" intercooler systems to move more coolant. Any i.d. throughout the system that is smaller than .875" will become a restriction. The Stewart pump has proven to be a pump that can move liquids at high rates. Just bolting the EMP pump on a 3/4" is likely to only improve flow rates by 10-20%. Increasing the tubing fron 3/4 to 1" will at at a minimum double the gallons per hour flow rate for your intercooler, which translates to more heat removed from supercharger discharge. The best you can hope for is ambient coolant temps going into the intercooler, unless you use ice somewhere in the system. Here's J2's replacement tubes next to the factory tubes. The i.d. on the left is .55", left is .87". The area of the larger i.d. is over 2.5 times that of the stock i.d. I reamed my tubes out to a .625" i.d., but it's not earth shattering in terms of gpm improvement. [ATTACH=full]1646044[/ATTACH] Location of tubes are #24 in the diagram below. [ATTACH=full]1646051[/ATTACH] Here's what you can expect. This video is a Cobra, but the intercooler systems are surprisingly similar. That smaller diameter tube in the first pick is the same part used in the Cobra engine by Ford. I could be mistaken, but I see a very similar piece in the 2020 GT500 intake. Bet you don't see that much turbulence in your reservoir. Stock flow rate might be 5 gpm. Bottom numbers on the flow meter is gpm. [MEDIA=youtube]yjbM9FKqPA0[/MEDIA] It's only money, right? [/QUOTE]
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Confused About Intercooler Upgrades
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