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Propeller question
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago August 20, 2020 at 8:04 pm Boat is a ā83 236 Mako Engine 250hp 6bta Jwac/Lucas Cav 1.5:1 Twin disc trans 1.25ā shaft Current prop is 16LHx17 (3 blade), which I dinged and am having rebalanced. No idea on cup. Is this the right prop or close? What WOT numbers am I looking for when I get it back on and test? Speed? Think dry weight is 4000# so loaded with 80gal fuel & gear maybe 5400#. Would like to have a spare prop for emergencies so wouldnāt mind changing things up…
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in: General Discussion
1 ReplyAugust 23, 2020 at 7:56 am Simple question–With the current prop, the engine engine make over and accurate 2600 PRM, and maybe close to 2700 RPM?? No load RPM 2900+ish? Any dark smoke?Last Post by:
posted: 3 years ago
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WIF
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
August 10, 2020 at 7:57 am Good morning. I found out last week that I have very, very dirty fuel due to water ingress into tanks. That problem was related to fuel fill hose setup and plumbing, and I am told water got into tank but ingress problem is now solved. Couple questions for the braintrust: Can I rig up sequentially smaller filters and continually pump my tank through a 12V “farm type” diesel pump, with the filtered diesel continually returning to the …
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2 RepliesAugust 10, 2020 at 7:02 pm I will give it a go then. Boat lives on a trailer so I will monitor how much crud I get out to establish progress. Might even be able to shine a light down there into tank. Thanks for feedback.Last Post by:
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flushing engine block/head – JWAC 6bta 250hp
This topic has 5 replies, has 3 voices, and was last updated by
4 years ago November 4, 2019 at 10:22 am Howdy everyone. Just recently received my custom exhaust riser from SBMAR for my 236 Mako and it’s a doozie. All those that were afraid I didn’t have enough room were proven wrong by the team and I can’t say enough about it, but that is for a later post. ***Spoiler, it bolted right up like they had had my boat in their shop the entire build! On to business. When draining coolant and replacing Tombstone aftercooler hoses, I …
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5 RepliesNovember 8, 2019 at 6:42 am Drop Breanda a note….. brendan@sbmar.comLast Post by:
posted: 4 years ago
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Please evaluate my exhaust system
This topic has 17 replies, has 7 voices, and was last updated by
August 12, 2019 at 1:23 pm Recent repower- older 250hp 6bta in a 236 Mako inboard. Engine was a spare irrigation unit in storage. Little to no use from what I was told. I just acquired the boat and love it. I realize I need to upgrade cooling system tank and plumbing away from the old ācorner mounted tankā system. Main question here is do I need a riser? Iām not comfortable killing engine while out fishing due to possible backflow to turbo. Turbo has some broken blades …
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17 RepliesSeptember 17, 2019 at 1:28 pm Thank you Bill. I will help you any way I can. Am currently still gathering critical measurements to find out what kinds of unanticipated hurdles yet await us. These guys are fun to work with.Last Post by:
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need info – no cpl
This topic has 10 replies, has 3 voices, and was last updated by
September 20, 2018 at 2:56 pm Hello all. New to forum but have been learning from it for a long time. Hope to someday meet Tony and the crew at SB. I am looking at a boat equipped with a single 6bta (inboard), with a fresh water cooled “tombstone” style aftercooler and a lucas cav injector pump. The cpl tag is missing, I’m told the engine was used in a freshwater irrigation pump (farming) application. I have read up on the 250 hp 6bta but the datasheets…
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10 RepliesSeptember 26, 2018 at 4:03 am After seeing these pics are we still thinking CPL 953? How much HP on 953? Fuel consumption similar to 220 6bt with rotary or 250 6bta with bosch? Gracias.Last Post by:
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Propeller question
