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Old 09-29-2017, 11:34 PM
  #21
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Problem is that you are loosing power up top. This my Zz572s/620 engine in 99 38 Avs. 30 pitch 5400/5500, 84/86 mph. Wouldn't pull passed that rpm. Your numbers are about the same.
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Old 10-02-2017, 11:12 AM
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Problem is that you are loosing power up top. This my Zz572s/620 engine in 99 38 Avs. 30 pitch 5400/5500, 84/86 mph. Wouldn't pull passed that rpm. Your numbers are about the same.
My sheet shows horsepower climbing all the way through 5800.
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Old 10-03-2017, 08:20 AM
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Yes so did my Zz572s . 5hp increments with torque falling quickly, u probably need 700 at 5400 to notice a difference . That's not going to keep spinning prop faster it's not a car on flat ground. You had 19hp increase in 400 rpm engine might be making 700 but it only has 680 usable hp at 5400.

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Old 10-04-2017, 11:41 AM
  #24
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Hmm.... looking at the numbers you guys have posted here... I'm a little dissapointed in what this AVS I just built some 725hp NA engines for is going to run for top speed. I was hoping closer to 90mph but it seems like mid 80's is where it will be.

Baja226sport, is this Paul F.? Looking at your peak torque, I'm wondering more cam duration might be better for your setup. Looks like it plateau's around 4200. If you're spinning 5500/5600 WOT and even though the HP number are climbing (they usually do with blowers) I usually want to cam it so the peak torque range will be a little higher (say 4500-4800) from the setups I've put together.
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Old 10-05-2017, 11:18 PM
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Originally Posted by Panther View Post
Hmm.... looking at the numbers you guys have posted here... I'm a little dissapointed in what this AVS I just built some 725hp NA engines for is going to run for top speed. I was hoping closer to 90mph but it seems like mid 80's is where it will be.

Baja226sport, is this Paul F.? Looking at your peak torque, I'm wondering more cam duration might be better for your setup. Looks like it plateau's around 4200. If you're spinning 5500/5600 WOT and even though the HP number are climbing (they usually do with blowers) I usually want to cam it so the peak torque range will be a little higher (say 4500-4800) from the setups I've put together.
yeah I donít think u have enough to get to next barrier, either need more cam or possible retard cam 2 to 4 degrees and move torque higher up in rpm to push the prop some more. Probably 30 pitch 5500 as u are now.
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Old 10-11-2017, 05:26 PM
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I usually prop something like this 800-1000 rpm above peak torque so figure 5700-6000. It has bravo's so I can't lug it either.
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