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TOPIC: Boat motor flame arrestor cover meanings

Boat motor flame arrestor cover meanings 07 Aug 2017 11:02 #1

  • dockofthebay
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Good morning. Over the weekend I went to a boat salvage yard looking at buying seats for my bayliner 1850 and ended up getting other stuff. One of the things I picked up was a boat motor flame arrestor cover that says 260/V8 for my wellcraft Mercruiser 383 motor. I want the label to be redone to read the appropriate numbers. I plan to have a vinyl sign shop redo it. I was told that the Mercruiser 383 V8 has 350 hp. Is that correct? Does that mean then that the label on the motor cover would read 350/V8 or 383/V8? Can anyone help me on this? Thank you so much.

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1994 Bayliner Capri 1850, 3 liter Mercruiser, 9.9 Johnson kicker.
1987 Wellcraft Antigua 265, Mercruiser 383 Stroker V8.
Pulls with Ext. Cab 2006 GMC Sierra 2500 HD

Boat motor flame arrestor cover meanings 07 Aug 2017 14:27 #2

  • Pcpete
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The labels matching the realty is like completing the job of the power change. Verifying the variables like horsepower can be the most difficult. That it's a 383 is something many of us can relate to, after that, what cam? What intake? What heads? Balance/blueprint? Ignition? All of these would need to be provided to a knowledgeable person to get a rough estimate. There may be a dyno shop that can rate actual horsepower to the prop.
It's not something most do, but if you go with some nominal information 383=350hp, others are going to be interested in copying or getting the decal from you. Just thinkin

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948

Boat motor flame arrestor cover meanings 07 Aug 2017 17:12 #3

  • Ruffryder
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if your engine is a 383, should've come with its original cover...
however, it should say 383 MAG Stroker

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Joon, Kathy, Jaden & Tristan
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Boat motor flame arrestor cover meanings 08 Aug 2017 23:06 #4

  • dockofthebay
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The boat and motor are from 1987. The motor was rebuilt 2 years ago and the new instrument gauges were put in place with it. Technically I only have the guys word that its a rebuilt Mercruiser 383 Stroker V8 but it looks brand new and runs like a dream. I just bought it last September.

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1994 Bayliner Capri 1850, 3 liter Mercruiser, 9.9 Johnson kicker.
1987 Wellcraft Antigua 265, Mercruiser 383 Stroker V8.
Pulls with Ext. Cab 2006 GMC Sierra 2500 HD
Last Edit: by dockofthebay.

Boat motor flame arrestor cover meanings 09 Aug 2017 05:10 #5

  • builderdude
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Your original engine was likely a 5.7 that was rebuilt and stroked, so it should have the original 5.7 cover. The cover for the modern Mercruiser 383 carbed version looks like this.

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Dave
Edmonds, WA
"THE FIX"
'93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
.030 over-Vortec top end-part closed cooled
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www.baylinerownersclub.org/index.php/for...ansom-repair-my-2556
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