pump changes for altitude
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pump changes for altitude

  1. #1
    Senior Member speedealer's Avatar
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    Default pump changes for altitude

    taking a daytona to firebird. The boat runs at 4600ft with air anywhere from 6500 to 10000ft. need to know how much plate and nozzle change to make before we leave. the plate is 3* up and nozzle is 2* The boat should run t/e.

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  3. #2
    B1 Racing cs19's Avatar
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    You'll certainly have better air. We sometimes run really early in the morning at f'bird and the air is really good in the early morning, it goes away fast and usually stays away, it's that first round that has killer air. I'd expect it to go away to 3500ish during the day. You'll be making more power for sure. Really comes down to how did the thing look in the bad air you were running in? Also, firebird is a little forgiving, you can run it a little more aggressive there and be ok.

    You might pull 1 out of the plate and 1 out of the nozzle and see how you do.
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    Quote Originally Posted by cs19 View Post
    You'll certainly have better air. We sometimes run really early in the morning at f'bird and the air is really good in the early morning, it goes away fast and usually stays away, it's that first round that has killer air. I'd expect it to go away to 3500ish during the day. You'll be making more power for sure. Really comes down to how did the thing look in the bad air you were running in? Also, firebird is a little forgiving, you can run it a little more aggressive there and be ok.

    You might pull 1 out of the plate and 1 out of the nozzle and see how you do.
    thanks for the info. I was thinking of starting with the plate at 0 and the nozzle 1 down. my earlsmith i have to go from 2up to 2 down on the nozzle and change the 1 down. we've never had the daytona anywhere else. plus we won't be able to make test & tune but the son wants to go so we'll be there. Thanks again.

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