No disrespect also and I don’t mean to take anything away from Nate’s hard work.  It is just a thought.

Indeed Nate put a lot of work into those carbs and I have great respect for those who wrench on their own, particularly those who pay close attention to the fine details.  I just want the best possible outcome from his efforts.

The installed angle of his jet intake (~4 degrees for standard Berk) influences the installed angle of the engine for drive line angularity.  Inherently, the aft end (the flywheel side) of the engine in a jet boat is lower.  In this picture, it seems that the plenum is installed with the angularity of the carb mounting surfaces angling down towards the stern (thicker side forward).  That combined with angle of the engine install will cause the front float bowls to be much higher relative to the rear float bowls.  This may or may not cause a problem.  He might have enough adjustability in his floats that this never causes a problem.  However, if it does, it will manifest itself as a tuning issue in an otherwise good functioning carb.  Ultimately, the carb angle should be level while on plane.  If you take a look at any form of motor sports that uses Holley (and derivatives) carbs, great effort is made to make the carbs level at ride height.  Manifolds are machined with an angle on the carb mounting surface (see red circle).

Again, not trying to take anything away from Nate and I mean no disrespect by stating my observation.  Just thinking an ounce of prevention is worth a pound of cure.  riverrat, you could be completely right also, it COULD be an optical illusion.  Or maybe I just looked at it out of the wrong eye (I can’t see out of one eye).     In reality, I could not tell for sure unless I measured the angle of the carb surface and compared it to the hull planning surface (next to the intake).  The angle of the carbs to the gunwale, deck, floor, etc. is irrelevant.  Just my humble opinion.

Respectfully submitted,

Joe

you know Joe I'm actually glad that we have this forum and we are all respectful enough to share our own opinions and in actuality I learned something I didn't even take into account... the angle of the dangle of the motor nor did I realize that you could turn the intake around 180 degrees. So I just wanted to say thank you for educating me and its duly noted for when I build my first jet boat. I can totally relate to the angle and how it will affect the floats because Im used to doing rock crawling and so forth.. So all in the end I hope nate gets his setup done correctly and had a blast on his boat... Its fun learning from you guys so once again thank you! :-)

V/R
Kevin

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Hey flushed, I think it may be an optical illusion...look at the line of the hull rim in the back round compared to the trajectory angle of the carbs and ram set up. It might just be me, or the picture but I think nates gonna be alright bitchen setup though! No disrespect intended at all flusher, you could be completely right and im just holding my phone at a bad angle lol

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Oh I get it lol Jesus im dense sometimes... stupid broken connecting rod..

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Way cool!

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Brad this is the only REAL jet boat site..I love it! I wouldn't know shit about building a jet boat without this site. Holorinhal, GT jets, beerjet, you...all have taught me tons without belittling me or making me feel stupid. When my family moves to kingman in 2016, i WILL be getting SCJB letters on my float.. keep up the good work sir!!

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Lol its all good bro, knowledge is knowledge and it still pertains to a setback...yes they do reglass the hull...read "holorinhal" posts about his 73 kona. His posts are also on performance boats.com...very informative...you can also pm me if you want further direction

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I'm a new guy around so this may be an "obvious" thing, but I don't know the answer. When you guys are talking about --set back-- are you referring to moving the whole jet and housing to the outside of the transom of the boat?? I do a lot of picture looking, (because there aren't a whole lot of drag/jet boats in my area to look at) and I notice some jets have the hand hole/clean out on the outside and some have it on the inside of the boat. Is this what you guys are talking about, or  is there another reason for that clean out placement???
Thanks, Ken

Most people set back there pumps for a performance gain, by moving the pump back you are moving the thrust line of the pump back creating more lift. You'll see a lot of race boats and some hotrod river boats with setbacks. Also moving the intake back allows the hand hole to be outside the boat (being able to put a pop off valve on) and makes more room in the drive line to be able to add a jet-a-way.


Hey ken, in short, yes, when you see the handhole either halfway out or all the way out of the transom, it is setback...

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Omg...lol

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Lookin good steveo!

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I can't believe it hasn't sold yet...If I was in California, that boat would be sitting in my driveway.. nice float man, hope it sells quickly for ya!

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*in front of the engine lol not in place..12-15" clearance so you could mount the rad and a set of fans..beck I bet a rear bench could still be put in as well. Do a full setback on the pump and don't use a jetaway. Move the engine back allowing more room...

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Cool cool I was just curious welcome though for sure!!

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Also, do many of the jet veterans run an oil temp sender to a gauge on the dash?

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