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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #25 on: July 21, 2016, 10:18:37 AM »
Lee..... time for a tunnel hull or a gullwing
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FordLover

  • Karma: +72/-0
Re: Pump slipping still from Dig
« Reply #26 on: July 21, 2016, 10:21:03 AM »
I need to get my gopro goin to watch my tach and also my pump.
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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #27 on: July 21, 2016, 10:23:11 AM »
Quote from: FordLover on July 21, 2016, 10:21:03 AM
I need to get my gopro goin to watch my tach and also my pump.

I took that video with my cell phone
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capogniracing

  • Karma: +68/-0
Re: Pump slipping still from Dig
« Reply #28 on: July 21, 2016, 10:23:22 AM »
If your normal rpm was 5200 and you where launching and it's hitting 7 then I would worry but not a few hundred rpm


BECKY WITH THE GOOD HAIR!
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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #29 on: July 21, 2016, 10:24:33 AM »
Quote from: capogniracing on July 21, 2016, 10:23:22 AM
If your normal rpm was 5200 and you where launching and it's hitting 7 then I would worry but not a few hundred rpm


BECKY WITH THE GOOD HAIR!

That was me before.... Normal RPM 5000 or so... it would bounce the rev limiter (7800) until i let off the throttle... Sounds wicked tho
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FordLover

  • Karma: +72/-0
Re: Pump slipping still from Dig
« Reply #30 on: July 21, 2016, 10:43:51 AM »
Quote from: steves86ta on July 21, 2016, 10:24:33 AM
That was me before.... Normal RPM 5000 or so... it would bounce the rev limiter (7800) until i let off the throttle... Sounds wicked tho

Holy shit, 7800? And it didnt split in half?
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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #31 on: July 21, 2016, 10:52:24 AM »
Quote from: FordLover on July 21, 2016, 10:43:51 AM
Holy shit, 7800? And it didnt split in half?

#smallblockforthewin!

Actually no, its hit that a few times. I have a pretty healthy valvetrain and held the bottom together with ARP hardware.

When i researched my cam in a car, they recommend shifting at 7800...

I set it that high because i didnt know how high it would pull on the bottle. Got to lazy to drop it down since then
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69kona

  • Karma: +13/-0
Re: Pump slipping still from Dig
« Reply #32 on: July 21, 2016, 01:28:27 PM »

Quote from: capogniracing on July 21, 2016, 10:17:22 AM
No jet expert but leave it alone. My boat runs right at 6100 on motor and full stab from a dig it will hit 6400 then settle back down within a second. Like GT said pump isn't loaded at idle.


BECKY WITH THE GOOD HAIR!
Cool I wasn't really sure if it is normal or not ... So anything around 400 rpm is normal ..?

 


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69kona

  • Karma: +13/-0
Re: Pump slipping still from Dig
« Reply #33 on: July 21, 2016, 01:29:52 PM »

Quote from: steves86ta on July 21, 2016, 10:18:37 AM
Lee..... time for a tunnel hull or a gullwing
Tell Franny that lol


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69kona

  • Karma: +13/-0
Re: Pump slipping still from Dig
« Reply #34 on: July 21, 2016, 01:38:07 PM »

Quote from: GT Jets on July 21, 2016, 09:41:44 AM
Leave it alone.

The pump isn't loading until the hull moves forward.

Your engine package is making too much hp in the mid level,  the curve is likely skewed for pulling a gear, you might see what it does with another couple more degrees of cam timing.

GT
I put my cam straight up ... 2 degrees advanced? Is this what your getting at ?


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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #35 on: July 21, 2016, 01:43:50 PM »
Quote from: 69kona on July 21, 2016, 01:38:07 PM
I put my cam straight up ... 2 degrees advanced? Is this what your getting at ?


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advancing the cam should "lower" the powerband. But will tighten the exhaust ptv clearance if i remember right
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69kona

  • Karma: +13/-0
Re: Pump slipping still from Dig
« Reply #36 on: July 21, 2016, 01:58:13 PM »
Lower the power band ... Do u think that's necessary to do on my motor?


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FordLover

  • Karma: +72/-0
Re: Pump slipping still from Dig
« Reply #37 on: July 21, 2016, 02:04:02 PM »
Quote from: 69kona on July 21, 2016, 01:58:13 PM
Lower the power band ... Do u think that's necessary to do on my motor?


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If you want to keep climbing the top 10 list....YA!!! Lol
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steves86ta

  • Karma: +41/-0
Re: Pump slipping still from Dig
« Reply #38 on: July 21, 2016, 02:11:52 PM »
Quote from: 69kona on July 21, 2016, 01:58:13 PM
Lower the power band ... Do u think that's necessary to do on my motor?


Sent from my iPhone using SoCal Jet Boats

i'll lean to GT for this one, but it would be worth trying.

Your cam isnt huge though, so i dont think it would make a huge difference
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