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  1. Jprevat

    1984 Yamaha 200 ETLN Lower Unit Removal

    I was recently gifted the engine in question and need some guidance. The lower unit has a crack, more than likely freeze damage, it was "repaired" but will need to be redone. I need to pull the lower unit and find out what the internals look like because it had hardly any oil in it when i pulled...
  2. Jprevat

    What Exactly Do I Have Here

    I am being gifted an older Yamaha 200 as a wedding present. Who couldnt use another project right? It does run but I want to go through it and tune it up and run it on a stand before it sees water. It doesn't seem to follow yamahas nomenclature so I am a little lost and hoping yall can help...
  3. Jprevat

    1984 Yamaha 200 and 1986 Yamaha 150 VMax Mid and Lower

    I have an opportunity to pick up a 1984 200 Yamaha for free but the foot is cracked. I havent had it pressure tested but even after being welded I doubt it would hold pressure. I found a 1986 150 Vmax with low compression for $800. Is it possible that I can swap the mid and lower sections from...
  4. Jprevat

    Engine Knock

    Hello again yall! Im hoping yall can help me with this very last (fingers crossed) piece of the puzzle. My 1997 4.3GL rebuilt engine is getting a slight knock after being run over 3000 rpms for a few minutes at a time. It can idle around all day with no problem at all. This knock is not...
  5. Jprevat

    4.3 GL Timing Problem

    I can not get my timing down to 1* BTDC. I allowed the engine to warm up and inserted the shunt to try and make sure my timing is good but if i take it down below 8* It begins to lug and shuts off. If I get it down to 1* and pull the clip on the shunt before it kills the engine it will idle and...
  6. Jprevat

    1986 Johnson 115 Block Interchange with 140

    I have a 1986 140 with a blown out cylinder and have found a 115 that looks to be in really good shape with a broken skeg. Is there any way I can use the 115 block in place of my blown 140? Thank yall in advance!
  7. Jprevat

    Oil Leak New Engine

    So my other thread had become convoluted with too many questions so I'll be short and quick with this one. So I have my engine in and it's running great but now I have a new problem. I lost 2 quarts of oil in an hour of break in. It's not burning oil either. I have about two quarts in my bilge...
  8. Jprevat

    Rebuilding the 4.3GL in my 1998 Sunbird 200SL

    Hey Guys, I was on here a while back trying to figure out how to swap in a used S10 Blazer engine into my Sunbird. I had one all lined up but I decided I would rather completely rebuild a 4.3 short block and have zero hours on the timer. I figured I would make a new thread about putting it...
  9. Jprevat

    Replacement Engine

    My 1997 4.3 GL has a cracked block on the inner water jacket that slowly seeps water into the oil but only above 30 mph. I dont have the funds for a reman engine at the moment but would really like to be able to have the boat water worthy. My neighbor has a 1996 4x4 blazer with the 4.3 vortec in...
  10. Jprevat

    Fuel pump issue 4.3 gl 1997

    I had to change my intake on my 4.3 and now I can't seem to get any fuel to the pump. I am getting voltage at the hookup for the pump when I turn the engine over. Does it simply take a little time for the pump to prime after being off the boat for 2 weeks or is my pump shot? Thanks in advance...
  11. Jprevat

    1997 4.3GL Timing

    Ok guys. I pulled it apart to find my water in oil problem on a new-to-me boat and found that my intake manifold was cracked out from lack of winterization, I assume. Now I have a new manifold and new gaskets all the way around. My problem is that I have never done timing before so I'm not...
  12. Jprevat

    which raw water temp sensor?

    I have been all over trying to find a definitive answer to what temp sensor to use in my 1997 OMC/Volvo Penta 4.3 GL. Really would prefer to go with Sierra if at all possible. Thank yall in advance for taking the time to read through and offer any help. Right now I have this Datcon part:
  13. Jprevat

    1997 4.3L GL Volvo (OMC) Water in oil

    Ok, I know this has been brought up a thousand times, but I could really use some advice before I tear the top end off of my engine. I got this boat for less than the price of the trailer just as a project and it seems I have definitely gotten in a little over my head. This boat is a 1998...
  14. Jprevat

    All gauges suddenly stopped reading.

    I have a 1998 Sunbird 200 SL with a 4.3L GL. I had power going to my dash and all the gauges were responding with the ignition keyed on. I still have power going to my switches and my ignition. When I turn the key to crank over the engine My rpm gauge and my fuel gauge jump and then freeze. I...
  15. Jprevat

    Is a 185 a good idea?

    I recently blew out a cylinder on my 1986 140 looper and while looking for a replacement I came across a 185 with good compression but will not start. Current owner says that it needs a power pack. I don't think he knows it uses twin packs. The motor was on his boat when he bought it and he...
  16. Jprevat

    4.3GL will not stay cranked.

    I have been reading through so many threads hoping to find an answer to my problems but I am stuck. My engine model is 4326BPLKD and I am having a hard time figuring out the correct parts I need due to the odd configuration. This is in 1998 Sunbird Corsair that was given to me so I can throw a...
  17. Jprevat

    94 Powerhead onto 86 mid and lower.

    My 1986 140 looper lost a bearing and took the stbd upper piston and cylinder head with it. I have found a 1994 140 that looks like the same casting. Are these powerhead interchangeable? Thank yall for taking a look.
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