I’m getting ready to purchase the fittings, fuel pump and fuel lines for a newly built 25 foot John Hacker design hull. I’m installing a GMC 6.2 LS3 engine with a Performance Design XS EFI Manifold. I have two 12 gallon spun aluminum fuel tanks with top draw fuel pickups. 3/8 NPT with anti-siphon valves. The tank to engine distance is aprox. 10 feet. I have read and reread the USCG rules and plan to follow. I’m also looking to purchase a automatic fire extinguishing system. Looking for any recomendations and things to avoid on all the above. This is my first time build. An intro to the boat can be seen on YouTube at Rosa’s Creative Works.
You have transcended from the old school universe to the great unknown. It’s all custom I suppose at this point. I hope someone can help. Sounds like you may want to double the fuel capacity though.
Thanks Matt! So 24 gallon sounds lite? You’re the second to make this comment to me. I may be able to add two 10 inch diameter by 4 foot long tanks on either
side of the hull. What I’m curious to know is how many gallons we’re thinking I need? This would surround the riders in gas tanks. Plus I still want to add some type of auto fire extinguisher.
I know this much. And that is not a lot BTW. HA. But I have a 350 in my 25 foot boat, and 60 Gallons. I can burn up 30 gallons in a short time. Like 4 hrs. I honestly dont pay attention. And your engine is gonna be more of a fuel sucker for sure. BUT, if its more of a race design, maybe its not that big of a deal since races were not 4 hrs, or 8 hrs… And weight would have been a big deal, so a min of fuel would have been the idea. So, is there ever a correct answer to these sort of questions? NO! Sorry.
Thanks Matt! You’ve made some good points for me to think about. Boat weight is yet unknown but might be about 1000 lbs. Lot’s of Cedar and carbon fiber. Fuel injected 6.2 lt = about 376 cu.in. 430 hp could really suck the gas. Fortunately I can add tanks. Thanks! Bob
Wolfgang and Matt,
Fireboy-Xintex, which is now owned by United Safety, offers an incredible line of fire detection and suppression equipment.
I’ve installed the better part of a dozen of them, especially in large runabouts’ engine bays.
Wow! Thank You! That’s what I needed! Fantastic!
I would also suggest a fume detector in the bilge/engine compartment. Xintex makes a nice fairly discrete looking one that could be slightly hidden out of view at the helm if desired. Lets you know of the presence of gas in the bilge with an audible and visual alarm. Saw the remains of a Century at a boat show that blew up after leaving the dock and a fume sniffer would have alerted the captain of this prior to pulling away. Installed one on my boat.
Awesome, thanks for the info!