Recent content by Payne

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    Replacing batwing manifold questions (and other questions)

    Sounds good.
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    Replacing batwing manifold questions (and other questions)

    Ordered the Barr kit. Thanks for your help and advice.
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    Replacing batwing manifold questions (and other questions)

    Ok, thanks. I didn't see that the Volvo valves could be installed in them. Sorry for my ignorance. :)
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    Replacing batwing manifold questions (and other questions)

    Thanks for the information. But the Volvo risers with the check valve are about $160 apiece. Plus the $900 for the manifold, 90 degree piece to make connection to the OMC exhaust. I was hoping that someone knew for sure if the check valve was not needed as a parts guy on the phone told me. I...
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    Replacing batwing manifold questions (and other questions)

    Alright, I had an aftermarket OSCO CSCR643 manifold and the OMC risers installed when I replaced the engine. (by the way, it is a 2006, not a 2008). These manifolds were discontinued long ago, but I found a note on an old catalog that says these are not to be used with Vortec engines, which...
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    Replacing batwing manifold questions (and other questions)

    Thanks for the education, guys. I'll start tearing it apart and see what really happened and go from there. I'll post pix when I get the heads off.
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    Replacing batwing manifold questions (and other questions)

    After reading your post with the pix, I see that the parts are Volvo. Are they the same as the OMC? When looking at a long block, do I have to use one that is listed as OMC or will the Volvo be identical? Pardon my ignorance.
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    Replacing batwing manifold questions (and other questions)

    You know, I just assumed that the block was cracked because of the the "freeze" plugs were pushed out. The oil was emulsified so water intrusion was there before I drained the block for the winter. Staying with the 4bbl would be the easiest and cheapest option, especially if the manifold isn't...
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    Replacing batwing manifold questions (and other questions)

    Some complications: '91 omc cobra drive, but a 2008 4.3 Vortec engine. Cracked block, probably caused from a cracked batwing exhaust manifold. I guess I will get a remanufactured Vortec long block and transfer the water pump, starter, flywheel, alternator, etc. from the old engine...
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    oil pressure alarm?

    I have a '90 4.3 HO that is missing the oil pressure and water temp alarm. Not the sensors, but the alarm itself. I'm having problems trying to locate a replacement. Anyone have a link to find the part? thanks
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    OMC 4.3 HO re-power is underproped

    I have a 1991 Reinell 200 Bermuda hardtop. I replaced the old 4.3 HO 4-barrel with a new crate Vortec 4.3, Vortec intake and a new Holly 4-barrel. It runs fantastic, but I must be making much more horsepower. The outdrive is the 1991 Cobra 800 15 spline variety 1.68:1 ratio (model # 986032...
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    '91 4.3 to vortec 4.3 Ignition question

    I have a dead 1991 OMC 4.3 (non-balance shaft)engine. I want to replace it with a Vortec 4.3 long block. I know I will need an electric fuel pump and a 8 bolt intake manifold, but will my OMC HO electronic ignition system need to be replaced? There isn't anything wrong with it (that I...
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    OMC exhaust flappers...Part #?

    I need to replace the exhaust flappers in my 1990 OMC 4.3 HO. They melted in an overheat. First, what are they really called? Exhaust seals? Anti-backwash flaps? Second, what is the part number, if anyone has the parts book around? Third, the teardown showed a cracked head on one bank, but...
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    Removing intake manifold on 4.3

    Well, I have started tearing down the '90 OMC 4.3 that overheated on the Columbia, but I can't for the life of me get the intake manifold off. There are big gobs of black sealent in the valley between the heads holding it down. Any tricks I could try? The good news is the exhaust manifolds...
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    I know it's bad news, but how bad?

    First off, sorry for the long post. I took my '91 Reinell with 4.3 OMC HO engine out for the first time yesterday on the Columbia River. I de-winterized it before hand and ran it on the muffs for about 15 min. to check for problems of which there seemed to be none. I launched and ran for...
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