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I have a 1991 SEARAY Sundancer 270 Mercruiser 7.4 (GM454 330
I have a 1991 SEARAY Sundancer 270 Mercruiser 7.4 (GM454 330 HP) my engine overheats, the heat alarm went off, shout off the engine immediately. looks like I have an hydro lock engine , because the st… read more
Jason
Jason
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Vocational, Technical or Trade School
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2000 year mercruiser bravo 2 drives 454 engine. Just started
2000 year mercruiser bravo 2 drives 454 engine. Just started use for the season. Ran fine but exhaust manifold on stbd side of engine hot to the touch and some paint off low near plug only on that man… read more
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Its time to replace my manifolds and risers. They are on a
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Tan
Tan
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I have a 7.4l / 454 Mercruiser engine. The exhaust manifold
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Noel Schembri
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I have a 2004 215 br Bayliner with a Mercury 5.0 inboard.
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I have a 454 (330 HP) in my boat. With a 21" prop, it would
I have a 454 (330 HP) in my boat. With a 21" prop, it would top out at 5000 rpm. (I normally run it in the 3500 rpm range) Recently, the cast iron manifolds began to rust out and I took it in to have … read more
Jason
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Tan, I need to replace my exhaust manifolds on the chevy 228s
Tan, I need to replace my exhaust manifolds on the chevy 228's would you recommend aluminum manifolds. The boat is in salt water.… read more
Tan
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i have a 350 chevy inboard volvo. my problem is that every
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I am repowering twin 454 with 496 stroker units Comp cams Xm
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Noel Schembri
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how do I replace manifolds & risers on a 5.0 OMC engine. Is
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James
James
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I have twin 8.1S mercruiser engines. My manifolds are starting
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Tan
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I am replacing a Volvo-Penta 4.3 l v6 apparently the old motor
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shane j forrest
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I have an 89 bayliner with an OMC 460 engine and an adapter
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capt ron 1959
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Why does my engines RPMs fluxuate while I am at idle I
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Jeremy R.
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What do you think about aluminum intakes, aluminum exhaust
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Joe
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Hi I have a 2004 Searay Sundancer with twin 8.1 Horizon motors.
Hi I have a 2004 Searay Sundancer with twin 8.1 Horizon motors. The boat has 142 hours on it and I want to know how you can tell if the engines need exhaust manifolds. I have been told that they last … read more
ROCKET
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Sirs Have a 1993 aluminum Smokercraft, model 172 Fazer w/
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The Man on the Dock
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I have a 1990 Bayliner 2651 Ciera. Several overhauls to restore
I have a 1990 Bayliner 2651 Ciera. Several overhauls to restore it in the last 4 1/2 years. I have a cooling question. Two years ago I changed the thermostat housing from stock to the stainless. It el… read more
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Ted G.

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Tan

Tan

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Jeff G.

Jeff G.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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