The Holy Grail Re-route is Realized
03-31-2010, 08:54 PM
#21
Boost Pope
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Maybe he's got a freeze plug in there, maybe he doesn't.
If he does, then it's a no-brainer. He's just using the thermostat housing there because it's convenient.
If he doesn't, then see my illustration above. The oil cooler is inline with one of the two loops at the top. Doesn't matter which one. Either way, coolant is going to flow through both of them. Might not be an equal flow, but there should be some flow.
I can't believe I'm sort-of defending Hyper.
Just trying to look at this analytically.
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03-31-2010, 09:18 PM
#22
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I dont know much about fluid dynamics (yet), so I could be totally wrong here.
But it seems like having 2 separate paths is asking for trouble.
I would think that difference in temperature, restriction, etc would cause big differences in flow, which would then possibly cause one side to backflow into the other
But it seems like having 2 separate paths is asking for trouble.
I would think that difference in temperature, restriction, etc would cause big differences in flow, which would then possibly cause one side to backflow into the other
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03-31-2010, 10:00 PM
#23
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You're not going to get backflow from one into the other, but you may well get uneven flow between the two. Kind of like the '01 and later Miatas with the modified head gasket, actually.
One possibility is that there may be less flow coming up through the center of the head gasket than at the front and back. Mazda did concentrate most of the holes near the middle of the gasket when they did the '01 redesign, presumably for that reason.
It's entirely possible that a well balanced dual-outlet system, plus an appropriate gasket, might be the best possible solution. Whether or not Hyper has fully considered all of the different variables involved is another matter.
One possibility is that there may be less flow coming up through the center of the head gasket than at the front and back. Mazda did concentrate most of the holes near the middle of the gasket when they did the '01 redesign, presumably for that reason.
It's entirely possible that a well balanced dual-outlet system, plus an appropriate gasket, might be the best possible solution. Whether or not Hyper has fully considered all of the different variables involved is another matter.
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03-31-2010, 10:48 PM
#25
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4" IC piping FTW
I love that I know about stuff that would make Hyper cream in his panties, but I would never tell him because its more fun to watch him try to use his idiot-engineering.
I love that I know about stuff that would make Hyper cream in his panties, but I would never tell him because its more fun to watch him try to use his idiot-engineering.
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04-01-2010, 05:16 PM
#26
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I've changed my mind. This isn't a dual-outlet setup.
Looking down the throat of the mystery thermostat housing (I wonder what car that's from), it certainly appears that the hole in the head is blocked off. IOW, it should look dark back there if we were able to see through the housing and into the head. Looks more like the surface of a freeze plug. My bet is that he''s using that housing simply as a convenient place to anchor the hose from the back, and that it's got a thermostat in it.
I think this is his path:
So, basically, the primary coolant path is exactly like that of a traditional rear-thermostat reroute. However, I see a couple of crucial flaws in the design:
1: His heater core is obviously gone, as is the factory oil cooler. I see no water lines leaving the head apart from the big one at the back. What this means is that when the thermostat is closed, there's going to be absolutely zero coolant flow through the head. None. Nada. Total stasis.
2: For some reason, he's taken the coolant outlet at the rear-exhaust side of the block (which would normally feed the turbo) and is looping this back into the mixing manifold. I assume he's done this so that there will be coolant circulation through the block when the thermostat is closed. There will be a tiny amount, however still nothing going on inside the head.
3: If the thermostat is indeed up inside the front housing, it's going to take half of eternity for it to open. IOW, there's a lot of stagnant coolant sitting in that long hose between it and the back of the head, so the thermostat isn't going to be exposed to what's actually going on inside the head.
I predict eventual failure due to cracking or warpage of the head, and possible damage of the exhaust valves. I'm strongly disinclined to say anything about it to him, as I really want to see him destroy yet another engine.
Looking down the throat of the mystery thermostat housing (I wonder what car that's from), it certainly appears that the hole in the head is blocked off. IOW, it should look dark back there if we were able to see through the housing and into the head. Looks more like the surface of a freeze plug. My bet is that he''s using that housing simply as a convenient place to anchor the hose from the back, and that it's got a thermostat in it.
I think this is his path:
So, basically, the primary coolant path is exactly like that of a traditional rear-thermostat reroute. However, I see a couple of crucial flaws in the design:
1: His heater core is obviously gone, as is the factory oil cooler. I see no water lines leaving the head apart from the big one at the back. What this means is that when the thermostat is closed, there's going to be absolutely zero coolant flow through the head. None. Nada. Total stasis.
2: For some reason, he's taken the coolant outlet at the rear-exhaust side of the block (which would normally feed the turbo) and is looping this back into the mixing manifold. I assume he's done this so that there will be coolant circulation through the block when the thermostat is closed. There will be a tiny amount, however still nothing going on inside the head.
3: If the thermostat is indeed up inside the front housing, it's going to take half of eternity for it to open. IOW, there's a lot of stagnant coolant sitting in that long hose between it and the back of the head, so the thermostat isn't going to be exposed to what's actually going on inside the head.
I predict eventual failure due to cracking or warpage of the head, and possible damage of the exhaust valves. I'm strongly disinclined to say anything about it to him, as I really want to see him destroy yet another engine.
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04-01-2010, 08:04 PM
#29
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I bet a beer there's no thermostat at all. All flow, all the time!
I bet another beer that he cracks the laminova within a week of getting this running as it gets banged against the turbo. Appears to be no clearance there.
I know it's an exercise in futility, but I have to wonder why the laminova isn't on the intake side of the block. Which is the routing of every reroute done by members of this board.
I bet another beer that he cracks the laminova within a week of getting this running as it gets banged against the turbo. Appears to be no clearance there.
I know it's an exercise in futility, but I have to wonder why the laminova isn't on the intake side of the block. Which is the routing of every reroute done by members of this board.
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