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SVT Shelby GT500
VMP Performance
New VMP Performance Heat Exchanger
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<blockquote data-quote="fishpick" data-source="post: 15422748" data-attributes="member: 182347"><p>Hey BJ - I read the other threads about this so I'm very clear on your opinion on this :rolling: but I'm gonna ask anyhow since it's a slightly different variation and you clearly love re-hashing this :bored:...</p><p>(other thread - <a href="http://www.svtperformance.com/forums/showthread.php?1095994-Thermostat-for-Heat-Exchanger-realistic&p=15134446&viewfull=1#post15134446" target="_blank">http://www.svtperformance.com/forums/showthread.php?1095994-Thermostat-for-Heat-Exchanger-realistic&p=15134446&viewfull=1#post15134446</a>)</p><p></p><p>My soon to be VMP-TVS-ed 2012 GT is a vert - and the wife has blessed the charger... but with certain stipulations on cruisability (just like she did for the Kooks cat back's I added) - and the fan noise Mr. Starkey demonstrates (<a href="https://www.youtube.com/watch?v=cNrP1ZXcr-E&feature=youtu.be&t=40s" target="_blank">https://www.youtube.com/watch?v=cNrP1ZXcr-E&feature=youtu.be&t=40s</a>) is a concern (hang on before you think I'm going to ask about turning them off - I'm not!)</p><p></p><p>I'm thinking about designing / adding a computer controller based off a thermostat on the outflow of the exchanger that will control fan speed as needed based on effluent temps. The higher the temps - the faster the fans turn to cool things off - simple.</p><p></p><p>So - when cruising or going gently - and the coolant is "cool" - there's likely no fan if it's a gentle ride around town with the top down... if we stop at Mickey D's (like your example in the linked post above) and things warm up in the drive through or while the car sits - the controller would spool up the fans as needed until we are back down to the "safe" temps - slowly slowing them back down as the temps return to "optimal".</p><p></p><p>The technical questions are : </p><p>1) "technically" there's no issue with these SPAL fans and providing variable voltage to manage speed, right? The chart/image in the linked post you provided shows them with variable cfm - so I assume it's fine but wanted to confirm.</p><p>2) what's VMP's operating expectations of this HE? Should the effluent be 20-30 degrees above ambient all the time? Is that your design goal? Or is there a "temp" that is a target - like the VMP 93 Octane tune I'm running now where the cooling fan on the engine comes on at 170.</p><p></p><p>I totally see the value of the fans & the cooling... I'm up north where a "hot" summer for us was this year where we had 20 days over 90... since April... so - if I can minimize some fan noise and keep the wife happy - this is a "cool" project anyhow <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> (again - I'm NOT suggesting turning off the fans or manually putting a switch in there - this human has too much error to introduce) - honest thoughts are welcome to - remember it is a convertible!</p></blockquote><p></p>
[QUOTE="fishpick, post: 15422748, member: 182347"] Hey BJ - I read the other threads about this so I'm very clear on your opinion on this :rolling: but I'm gonna ask anyhow since it's a slightly different variation and you clearly love re-hashing this :bored:... (other thread - [url]http://www.svtperformance.com/forums/showthread.php?1095994-Thermostat-for-Heat-Exchanger-realistic&p=15134446&viewfull=1#post15134446[/url]) My soon to be VMP-TVS-ed 2012 GT is a vert - and the wife has blessed the charger... but with certain stipulations on cruisability (just like she did for the Kooks cat back's I added) - and the fan noise Mr. Starkey demonstrates ([url]https://www.youtube.com/watch?v=cNrP1ZXcr-E&feature=youtu.be&t=40s[/url]) is a concern (hang on before you think I'm going to ask about turning them off - I'm not!) I'm thinking about designing / adding a computer controller based off a thermostat on the outflow of the exchanger that will control fan speed as needed based on effluent temps. The higher the temps - the faster the fans turn to cool things off - simple. So - when cruising or going gently - and the coolant is "cool" - there's likely no fan if it's a gentle ride around town with the top down... if we stop at Mickey D's (like your example in the linked post above) and things warm up in the drive through or while the car sits - the controller would spool up the fans as needed until we are back down to the "safe" temps - slowly slowing them back down as the temps return to "optimal". The technical questions are : 1) "technically" there's no issue with these SPAL fans and providing variable voltage to manage speed, right? The chart/image in the linked post you provided shows them with variable cfm - so I assume it's fine but wanted to confirm. 2) what's VMP's operating expectations of this HE? Should the effluent be 20-30 degrees above ambient all the time? Is that your design goal? Or is there a "temp" that is a target - like the VMP 93 Octane tune I'm running now where the cooling fan on the engine comes on at 170. I totally see the value of the fans & the cooling... I'm up north where a "hot" summer for us was this year where we had 20 days over 90... since April... so - if I can minimize some fan noise and keep the wife happy - this is a "cool" project anyhow ;) (again - I'm NOT suggesting turning off the fans or manually putting a switch in there - this human has too much error to introduce) - honest thoughts are welcome to - remember it is a convertible! [/QUOTE]
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