Automotive powered airboat discussion.
well guys, been having this airboat for 3 months and the motor, bone stock 454 iron head, dropped a valve and needs a complete rebuild, so tore entire boat apart and goin back up all new, from the poly to the airfilter, boat is an 89 robicheaux hull, poly has been completely replaced by terry Poirier down here is south la, t-kens brother, motor is in Eunice at Shane Lejeune's racing engines getting punched out and built, k1 cranks, arp rods, mahle coated pistons, all forged bottom end, brodix heads, profiler intake, 950 quickfuel, not sure of the cam yet but will let you guys know when I get the build sheet on the engine, alumitech longtube 2" primary headers, estimated 630+ hp below 5400 rpm, running a ch3 2:1 beltdrive with a sensenich 80" ngr 3 blades and sensenich hub, before the motor took a crap it would break free on dry at 3900 and run decent, the bottom of the hull was not "round" and was a bit of a beast to handle in deep water, anyways im a try to post as many pics as possible and keep the thread updated when I can so here are some pics guys n gals
got the stand fixed up and new mounts for the 50 gal alumitech fuel tank and also gauge panel, added some gussets in the back and welded up the hacked up exhaust outlet holes, got some ss thru hulls and new headers from alumitech also.
no leaks on the new bottom job, used ss screws rubber padded ss washer and brass locknuts, they beat all the dents out the bottom and sides and added some strips of aluminum to the chine to strengthen the old aluminum, I think he did a hell of a job on the poly, I know it is not the easiest thing to do in the world, so hats off to him for helping me out, he also added 3 more angles to the stand and replaced the old ones so now the stand it attached to every tbar in the boat which im happy about, I been reading this site for months now and got a lot of my ideas from it. I love airboating and cant wait to be sliding again, its def an addiction....ill keep this thread up to date when I can ppl
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It's bad when tearing them down but it's great when it's back on the water good luck
Psalms 101:7 No one who practices deceit shall dwell in my house; no one who utters lies shall continue before my eyes.
engine as of 3 weeks ago, punched .070 over and a pic of the stroker k1 crank, oh ya tearing down is always the easy part, got so many ideas but not enough boat to put them on haha, oh ya cant wait to be sliding again, the motor under the cover is some race motor for a local drag racer
while the motor is off, u might want to go bring that hull to marks and have them put some round in the hull. then put a brace in it to keep the round. tha'ts what i did to my 15' Porier hull and it was a beast on the ground after i did this.
good luck, sweet boat.
good luck, sweet boat.
Terry Poirier did, they beat on it for a week and re welded all the welds that cracked, it wasn't that that bad but def enough to notice, it's def rounder than what it was
ada5771 and I got some fitting up done last night, got stbd side catwalk hard tacked in and I have the cage 75% mounted, port side catwalk top is in place and tacked, getting excited as its looking like a boat again, gonna be working on new grass rake Wednesday, will post pics when done with that, steady progress
got the catwalks finished welded and ground smooth on both hull sides, then cut the old wire off the cage...moving right along, next step is the grass rake
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I will take credit on the long tube header design! Did a build last year that needed them and worked with Alumitec (Brad) and thats the look we came up with. I love mine and on one set we port matched them which was crazy hard for him to do but my engine builder says they were the best built headers he has ever seen.
not much progress, put floor in Saturday and drilled 17 holes in stand to mount to boat, yesterday I got the stand in and drilled holes in the tbars, finished mounted the cage and fixed a few rusted out bars, ordering 3/16" roundbar for "cage wire" this am and making access hatches on wed, no update on motor yet as of today but will in the next few days, I am liking how it is all turning out and seeing it on the ground make me want to finish it even more, hahaha
got some time in on the cage the last few days, got the access hatches built and also layed out a few rows of 3/16" round bar going up the cage, very tedious but worth it in the end, I think it looks a lot better than normal 2x4 wire and stronger too, windows aren't terribly big b/w bars. some are smaller than 2x4 but some are bigger, so time will tell how it protects the props, I like to let those ngr's breath a bit, also got a pic of the updated motor from shane yesterday, not long now to see what it can do on the dyno then off to blast n paint and final assembly, been fun and hard work, but gonna be awesome in the end
got the cage and light mounts finished up last night, both access hatches built and done, gonna build the grass rake Wednesday then its off to paint. getting close to final assembly, I have a pic of the motor but the site wont let me upload it for some reason......not sure why, but engine has the heads on and soon to be finished, we are going to dyno the engine to make sure all is tip top and broken in as needed with no questions about what we have bolted to the stand on this thing, def been a fun project thus far
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