Recent content by Chojin

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    Jeff Haas MSP

    Hey Vic, I check here every now and then. I still remember you (I'm not that old). Glad the car was an inspiration to someone. It's just too bad I couldn't do more with the motor/turbo/engine mgmt. setup. They wanted more show than go and the budget was limited. -Shawn
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    Jeff Haas MSP

    Werd.
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    Needed: Stock Mazdaspeed IC to TB pipe

    Hey Everyone - Any TX Mazdaspeeders have one that you're willing to sell? If so, please let me know. Thanks. -Shawn
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    WTB: Stock Mazdaspeed IC to TB pipe

    Anyone - If you have one you're willing to sell, please let me know. Thanks. -Shawn
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    Houston: March24th..........

    Werd. I'll be there.
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    Heads up for the TX protege owners - Injectors FS

    Locals don't have to pay shipping, so the price will be $10 less. The rest of the TX guys can have these for $5 less.
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    Heads up for the TX protege owners - Injectors FS

    Wow, no TX proteges need these? Still FS btw.
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    Heads up for the TX protege owners - Injectors FS

    Hey Everyone, This is a heads up for all the Texas protege owners who may not check out the For Sale forum. I'm selling a set of brand new Bosch 42 lb/hr (440 cc/min) fuel injectors here. I'm sure there are a few Houston and DFW guys who could use these. Thanks, -Shawn
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    autologic

    mspHtown - I got a call from Jason on Sunday about a guy he talked to with an MSP who wanted to know about EMSs and such. I'm guessing this is you? He gave me your number, but I don't think it was the right one. When I called it yesterday, the voice mail message had some guy with a hispanic...
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    MSP volumetric efficiency

    O.K. - For the sake of comparison: Here is the same Mitsubishi TD05-16G (Large) Compressor Map posted by TurfBurn with the airflow requirements for an FS motor operating to 7000 rpm using an 80 % VE, shown at various Pressure Ratios: I added the PR of 2.4 (17.88 psi) on this map. It...
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    MSP volumetric efficiency

    O.K. - This might be getting a little off topic, but I'd like to bring it up anyway. Here is a GT28RS Compressor Map with the airflow requirements for an FS motor operating to 7000 rpm using an 80 % VE, shown at various Pressure Ratios: Here's the calculation I use for Pressure Ratio...
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    MSP volumetric efficiency

    O.K. - To avoid confusion, here's the formula I use to calc. engine airflow requirements: cfm = [(Engine Displacement)*(VE)*(RPM)*(Pressure Ratio)] / 5660 Taking the numbers from the chart above and solving for VE will give ~76.6 %. Although this formula over-simplifies things a bit (by...
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    MSP volumetric efficiency

    FYI - Based on that chart, a VE of ~76.6 % is being used. -Shawn
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    Which Optima

    I bought mine at a Sears Auto Center. It was the only place in town that had a Group 35 in stock. -Shawn
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    Which Optima

    Spooled - Our factory battery is a Group 35. I just bought the Group 35 Redtop and it is the same length and width as our factory battery. You will need to use the 3/4" thick plastic base that comes with the battery to make it the same height as our factory battery. Perfect fit and the...
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