 HELP: Fluid dynamics, anyone?, Waterline size for V8 conversion |
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| tygaboy |
 Jan 16 2017, 04:10 PM
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914 Guru  Group: Members Posts: 5,323 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California 
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Help please: What, if any, are the impacts of varying tube ID between the engine, water pump and radiator?
I want to run hard lines from the engine compartment to the front trunk. They will be protected and the plan should eliminate any concern about cabin heat. Here's what I'm looking to better understand: As I understand it, I can expect sufficient flow from -16 AN fittings and hose. This has an ID of .089. A 1" .049 wall 5052 AL tube has an ID of .902. The radiator has inlet/outlet fittings that take a 1.25 ID hose. Assuming I hook all this up, are there any odd or problematic things that happen when the 1" line dumps to a 1.25 radiator opening then upon exit, flows from 1.25" back into a 1" line? Apologies if this is rudimentary. I'm new to H2O cooling... (IMG:style_emoticons/default/confused24.gif) Thanks, Chris |
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| Chris914n6 |
Jan 16 2017, 05:55 PM
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Jackstands are my life. Group: Members Posts: 3,341 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Smaller diameter hard lines shouldn't be a problem, I think the 996/986 do the same thing. The actual ID of the engine outlets is close to 1" anyways.
Some of the other things has me concerned. Can you elaborate on your design? |
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| tygaboy |
Jan 16 2017, 06:13 PM
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914 Guru Group: Members Posts: 5,323 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California
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QUOTE(Chris914n6 @ Jan 16 2017, 03:55 PM)  Smaller diameter hard lines shouldn't be a problem, I think the 996/986 do the same thing. The actual ID of the engine outlets is close to 1" anyways. Some of the other things has me concerned. Can you elaborate on your design? Let me know what, in particular, if this doesn't clear it up. A couple things. If a small drop in ID isn't a problem, I'll up the wall thickness. If you've seen my build thread, you'll see I plan essentially a complete tunnel update. The current plan is to replace the tunnel with a pair of 1.5" bars that run from the lower fire wall to the front of the car. The top of those will be skinned w/sheet metal but I'm planning to remove the floor under that section. So essentially I'll have a 1.5" tall tunnel that's open on the bottom. That will covered with a removable, ventilated cover that is part stiffening element, part bash plate. The underside of the car/tunnel area will be sprayed with something like LizardSkin or other heat/sound barrier. Critique away! And thanks in advance for any help. Chris |
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Posts in this topic
tygaboy HELP: Fluid dynamics, anyone? Jan 16 2017, 04:10 PM
914GT I've seen little difference between 3/4" ... Jan 16 2017, 05:09 PM
Cracker Sounds like a great idea...build it.
T
Critiqu... Jan 16 2017, 07:44 PM |
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