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Old 05-28-2013, 06:16 PM   #51
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Yep. He'll never get my vote.

But the ST is AWESOME!
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Old 06-05-2013, 02:37 PM   #52
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The biggest downfall to the Mazdaspeed 3 is the DISI, once you start to add parts you have to replaced the high pressure fuel pump that is driven by the cam.
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Old 06-05-2013, 03:49 PM   #53
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The biggest downfall to the Mazdaspeed 3 is the DISI, once you start to add parts you have to replaced the high pressure fuel pump that is driven by the cam.
The pump hasn't been the limiting factor to making a fair bit of extra power on the ST, at least with the stock turbo.
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Old 06-05-2013, 04:22 PM   #54
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The pump hasn't been the limiting factor to making a fair bit of extra power on the ST, at least with the stock turbo.
Which is probably why the ST is making more power vs. the MS3. Anyone know what the factory injector size and factory fuel pump pushes?

Its nice that Ford put a twin scroll turbo setup on the ST's from what I read.
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Old 07-05-2013, 01:28 AM   #55
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you obviously know nothing about turbo vehicles lol. There is no need to cool down a turbo that is factor or a turbo that isnt a journal bearing turbos or turbos that don't get water to them. When you turn a vehicle off the cooling system remains to pump coolant through the engine to cool the engine down. On turbo vehicles and espically factory the coolant also runs to the turbo cooling it off also. You obviously know nothing about turbo maintence.
The water pump keeps going despite my engine being off? Is this your statement? I've seen some vehicles that have fans that continue to spin but never water being recirculated through the motor. And not all turbo vehicles use coolant lines. Look at a broader spectrum of vehicles before posting this happens and this does not. Slamming people on the interwebz and you don't use spell check even -_-;. I would say the tiny inter-cooler is very limiting. That is why they take the boost down after a short burst due to heat soak.
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Old 07-15-2013, 12:26 AM   #56
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The water pump keeps going despite my engine being off? Is this your statement? I've seen some vehicles that have fans that continue to spin but never water being recirculated through the motor. And not all turbo vehicles use coolant lines. Look at a broader spectrum of vehicles before posting this happens and this does not. Slamming people on the interwebz and you don't use spell check even -_-;. I would say the tiny inter-cooler is very limiting. That is why they take the boost down after a short burst due to heat soak.
No, the water pump is mechanical, so it can't run after shut down. Water circulates passively due to extra heat in the turbo, which cools down the bearing area and eliminates the need for a turbo timer. In fact, nowadays with any good turbo, as long as you didn't just come off the track, there is no need to run the car for a while to cool things down. Modern oil and materials make this possible.
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Old 07-15-2013, 05:19 PM   #57
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No, the water pump is mechanical, so it can't run after shut down. Water circulates passively due to extra heat in the turbo, which cools down the bearing area and eliminates the need for a turbo timer. In fact, nowadays with any good turbo, as long as you didn't just come off the track, there is no need to run the car for a while to cool things down. Modern oil and materials make this possible.
Oh the poster above me claimed it "continued to pump". Yes, without track abuse it should not be an issue. However the water will not be pressurized at the same level and will lose some of it's cooling ability. I'm familiar with the mechanics of it all I was just posting to see what else he was going to throw us. Also he claims non coolant fed turbos do not need cooling time. No they don't if you don't run it hard and park it. Otherwise yes, the oil is the only thing in there and will break down from getting the turbo very hot and then parking it.
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