TwinTurbo.NET: Nissan 300ZX forum - Nice numbers, I think. I have no idea what they flow in
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Subject Nice numbers, I think. I have no idea what they flow in
     
Posted by AshsZ of Z1Motorsports.com on August 31, 2003 at 4:49 PM
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In Reply To here you go posted by Carlos Ramirez on August 31, 2003 at 04:23 PM
     
Message stock form or what they do just with the cams, or with just portwork, or just with the bosses removed so the data is pretty useless to me. Do you have any information on what the heads flow in these various configurations for comparisons?

I've been kicking the idea around for a little while, but I think there is more to portwork than just high flow numbers. The size of the port has a lot to do with both flowrates as well as gas velocity. I've been researching it quite a bit lately, but it appears that the NA heads are making more torque at high RPM than the TT heads. The TT heads make more torque through the 4500 range. I am comparing my dyno results to that of TT's with the same mods, but with TT heads. My engine has NA heads on them and it appears that bigger does not always mean better. There's a lot more going on with the intake air than static flow. The dynamics that occur as a result of the stop-go of the intake air and the air velocity (due to port cross-sectional area) has more to do with where the engine will make its peak power. ....stay tuned....



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