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SVT Shelby GT500
Pic Request - PS Pumps & Water Pumps
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<blockquote data-quote="Harley#356" data-source="post: 15841050" data-attributes="member: 62603"><p>Eureka lol</p><p></p><p>Between those photos, this link (<a href="https://www.svtperformance.com/forums/threads/what-is-this-opening-gt500-block-see-pic.732759/" target="_blank">https://www.svtperformance.com/forums/threads/what-is-this-opening-gt500-block-see-pic.732759/</a>), and this diagram (attached), I'm finally understanding the entire cooling system & path. Thanks everyone.</p><p></p><p></p><p>So my plan going forward (please give me a sanity check on this)...</p><p></p><p></p><p><strong>1. I need to remove the freeze plug in the back of the WP hole:</strong></p><p>If I'm not using the mech GT500 water pump (assuming Meziere or Lightning style, so no return into the front of the pump), and I'm using my 2v lower coolant port (like the BPS CJ unit), I'll need to pop that freeze plug out of the back of the WP hole so the coolant return will flow from the radiator into the lower radiator hose, into my lower coolant port on the side of the block, and into the back of the WP w/ that freeze plug removed</p><p></p><p><strong>2. I can delete the heater core lines:</strong></p><p>I'm not running a heater core, so I don't need that barb on the back of the intake manifold that feeds the HC (I actually don't have one being a CJ lower intake), so I don't need that side tube along the head that returns back to the lower radiator hose (may be a caveat to this, see way below)</p><p></p><p><strong>3. I can delete the oil cooler lines:</strong></p><p> I'm not running an oil cooler, so I don't need the very bottom port of the t-stat housing (smallest hose on the very bottom coming straight down), because there's no oil cooler for that to go to, and I don't need that barb on the lower radiator hose</p><p></p><p><strong>4. Do I need the "recirc" hose at the front?</strong></p><p>I'm referring to the hose coming off the t-stat housing at a 45* angle downwards. (There's the 2 upper ports, the 1 45* port, then the straight down port). I'm seeing this as a way for the coolant to still flow thru the engine before the t-stat opens. If the t-stat is shut, all the coolant flows out of the front of the heads, and thru this hose back to the lower radiator hose. When the fluid is hot enough to open the t-stat, it seems the fluid splits, half recircs and half goes thru the radiator. I'm assuming if I don't keep this hose, I would be dead heading the coolant path until the t-stat opens?</p><p></p><p><strong>5. Do I need a "recirc" hose for the rear? (the caveat)</strong></p><p>The OEM GT500 setup the rear of the heads the fluid exits thru the intake manifold, goes thru the heater core, and returns to the lower radiator hose. That coolant doesn't see the radiator on that loop, but it allows flow out of the back of the heads. I have 2 issues stopping this right now. 1 my lower intake is a CJ version that doesn't have a barb here, and 2 my heads have the rear coolant ports blocked off (see 2nd attachment). Does the CJ recirc the fluid out of the rear of the heads in another manner then? Or do they just keep it plugged and only force the fluid in the heads out of the front port? Seems this would cause the rear cylinders to run hotter.</p><p></p><p>I'm thinking it would be a good idea to keep a recirc off the rear to try and balance cylinder temps, the best way about it though is my next challenge.</p></blockquote><p></p>
[QUOTE="Harley#356, post: 15841050, member: 62603"] Eureka lol Between those photos, this link ([URL]https://www.svtperformance.com/forums/threads/what-is-this-opening-gt500-block-see-pic.732759/[/URL]), and this diagram (attached), I'm finally understanding the entire cooling system & path. Thanks everyone. So my plan going forward (please give me a sanity check on this)... [B]1. I need to remove the freeze plug in the back of the WP hole:[/B] If I'm not using the mech GT500 water pump (assuming Meziere or Lightning style, so no return into the front of the pump), and I'm using my 2v lower coolant port (like the BPS CJ unit), I'll need to pop that freeze plug out of the back of the WP hole so the coolant return will flow from the radiator into the lower radiator hose, into my lower coolant port on the side of the block, and into the back of the WP w/ that freeze plug removed [B]2. I can delete the heater core lines:[/B] I'm not running a heater core, so I don't need that barb on the back of the intake manifold that feeds the HC (I actually don't have one being a CJ lower intake), so I don't need that side tube along the head that returns back to the lower radiator hose (may be a caveat to this, see way below) [B]3. I can delete the oil cooler lines:[/B] I'm not running an oil cooler, so I don't need the very bottom port of the t-stat housing (smallest hose on the very bottom coming straight down), because there's no oil cooler for that to go to, and I don't need that barb on the lower radiator hose [B]4. Do I need the "recirc" hose at the front?[/B] I'm referring to the hose coming off the t-stat housing at a 45* angle downwards. (There's the 2 upper ports, the 1 45* port, then the straight down port). I'm seeing this as a way for the coolant to still flow thru the engine before the t-stat opens. If the t-stat is shut, all the coolant flows out of the front of the heads, and thru this hose back to the lower radiator hose. When the fluid is hot enough to open the t-stat, it seems the fluid splits, half recircs and half goes thru the radiator. I'm assuming if I don't keep this hose, I would be dead heading the coolant path until the t-stat opens? [B]5. Do I need a "recirc" hose for the rear? (the caveat)[/B] The OEM GT500 setup the rear of the heads the fluid exits thru the intake manifold, goes thru the heater core, and returns to the lower radiator hose. That coolant doesn't see the radiator on that loop, but it allows flow out of the back of the heads. I have 2 issues stopping this right now. 1 my lower intake is a CJ version that doesn't have a barb here, and 2 my heads have the rear coolant ports blocked off (see 2nd attachment). Does the CJ recirc the fluid out of the rear of the heads in another manner then? Or do they just keep it plugged and only force the fluid in the heads out of the front port? Seems this would cause the rear cylinders to run hotter. I'm thinking it would be a good idea to keep a recirc off the rear to try and balance cylinder temps, the best way about it though is my next challenge. [/QUOTE]
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