SoCal Jet Boats

Discussion => The No Wake Zone => Topic started by: ka0tyk on July 06, 2011, 05:37:53 PM

Title: so whats your guess on my speed?
Post by: ka0tyk on July 06, 2011, 05:37:53 PM: basic 454, lil cam
panther pump
demon 650 carb, vacuum sec. (love the sound when they open!)

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.brainbox.us%2Fmisc%2FIMG_20110626_120744.jpg&hash=ab5cbdc2d17a576524d96e628e3c0f33e969099c)

was scootin along WOT my highest was 5200 rpms in a little bit of chop. on the flat was 5000 rpms. im guessing the little bit of wave let me get a little more boat out of the water.

next investment = gps.

it felt fast but i bet it was like 40mph. haha.
Title: Re: so whats your guess on my speed?
Post by: 74 howard 21rc on July 06, 2011, 05:52:07 PM: Dump that vacuum secondary carb and put an 750 mechanical secondary carb on it.You will see better fuel economy and better performance with your jet
Title: Re: so whats your guess on my speed?
Post by: Ralph Brunt on July 06, 2011, 06:05:36 PM: 56mph
Title: Re: so whats your guess on my speed?
Post by: Dirty Air on July 06, 2011, 06:10:01 PM: what impeller?
Title: Re: so whats your guess on my speed?
Post by: ka0tyk on July 06, 2011, 06:28:14 PM: Quote from: Dirty Air on July 06, 2011, 06:10:01 PM
what impeller?

they make diff impellers for panthers? heh.
Title: Re: so whats your guess on my speed?
Post by: 77GT on July 06, 2011, 06:33:45 PM: 48.7 MPH
Title: Re: so whats your guess on my speed?
Post by: Luckie Stiff on July 06, 2011, 06:44:32 PM: Quote from: 74 howard 21rc on July 06, 2011, 05:52:07 PM
Dump that vacuum secondary carb and put an 750 mechanical secondary carb on it.You will see better fuel economy and better performance with your jet

Yep. My guess is a solid 53.4
Title: Re: so whats your guess on my speed?
Post by: Nixonnow on July 06, 2011, 06:52:57 PM: my guess is 50-55 mph. my buddy has a 21.5 foot daycruiser with a panther and BBC and does an honest 45mph. if he can get that tugboat up to that speed you can fo sho hit 50-55.... :thumbup: :thumbup: :thumbup:
Title: Re: so whats your guess on my speed?
Post by: Dirty Air on July 06, 2011, 07:26:00 PM: Quote from: ka0tyk on July 06, 2011, 06:28:14 PM
they make diff impellers for panthers? heh.
Shows you what I know about Panthers! I'll just shut up now! :-X
Title: Re: so whats your guess on my speed?
Post by: Nordie on July 06, 2011, 07:52:43 PM: tahiti with a panther you dont have much going for you...might be faster in reverse :thumbdown:
Title: Re: so whats your guess on my speed?
Post by: ka0tyk on July 06, 2011, 10:26:01 PM: Quote from: Nordie on July 06, 2011, 07:52:43 PM
tahiti with a panther you dont have much going for you...might be faster in reverse :thumbdown:

a panther in reverse just shoots water all over everywhere. i try to avoid using it. pretty sure whats why they came with those plastic covers from the factory. its a disaster.
Title: Re: so whats your guess on my speed?
Post by: GT Jets on July 06, 2011, 10:53:11 PM: Quote from: Luckie Stiff on July 06, 2011, 06:44:32 PM
Yep. My guess is a solid 53.4

53.4....That's pretty bold. I was going to go with closer to 50.2 to maybe 51.1, but to go all the way up to 53.4, too rich for my blood...

The Panther powered boat we had had a 360 cubic inch AMC in it, balls out with no beer or ice in the styrofoam cooler and all the anchors and skis and crap on the shore, at 4900 RPM we got her to a screamin' 44 MPH on a Stalker II radar gun.... 8)

Sounded killer though.

GT
Title: Re: so whats your guess on my speed?
Post by: Dirty Air on July 06, 2011, 10:59:31 PM: Quote from: GT Jets on July 06, 2011, 10:53:11 PM
a Stalker II radar gun.

GT
Holy smokes! A stalker II?....I have not seen one of those in years,,,,weren't those steam powered? >:D
Title: Re: so whats your guess on my speed?
Post by: Willow Wog on July 07, 2011, 12:52:22 AM: Now if were talking eBay or craigslist talk its got to atleast do a hundred >:D
Title: Re: so whats your guess on my speed?
Post by: Tio Pancho on July 07, 2011, 06:00:02 AM: I will chime in with a 49. Leaves you that 50 mark to shoot for! This combo is very similar to Bebo's so I am curious to see what you got.
Title: Re: so whats your guess on my speed?
Post by: AQUAHOLIC on July 07, 2011, 07:03:47 AM: my 21ft had a 454 with demon 800dp carb. i could run just at 50 mph wide open. the panther pump is a great pump. you just need to make sure the clearances are good. once your pump is dialed in they last forever. I had tom at jet boat performance go thru mine and when i got it back it was a whole new boat. i did not pick up much speed but i was turning 1000 less rpm to get there. and that saved my motor.