Search results

  1. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Scott, I compared the old carb with the new one and I am happy to say that they are the same and identical. The old carb has a metal tag screwed on one of its bolts which says Mercruiser MCM175 and the number 33049565. the new carb does not have any tag on it but has the same number stamped on...
  2. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks for all that great info. I learned a lot. What I neglected to mention was that the new manifold also included the carburetor (see picture). So I assume since the whole thing came as a set to leave it all alone and install the manifold without the old heating tube. Btw, the original...
  3. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Rick for the torque specs. My intake manifold was too rotten so I found a good used one on ebay. I received it the other day with a slight difference than my old one though. Right next to the carburetor on starboard on my old manifold is this thing, looks like a probe or sensor (see...
  4. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Scott for answering my questions. Please confirm that the following torque values are correct. I am getting conflicting values from different manuals and I am not sure what is right. Here is what I did: Head bolts = 70 ft/lbs crankshaft main bearing cap nuts = 65 ft/lbs connecting rod cap...
  5. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    I am about to install the hydro lifters, push rods, rocker arms etc. and I have a lot of questions about the lifters. They have been sitting in the shelf now for several months and I don't know if they are empty, half full or full of oil. I know how to adjust lash and preload, but I don't know...
  6. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    I will stay with standard. I was able to read the grade markings off one of the OEM bolts and they are grade 5. I also noticed that 6 of the bolts are 1 1/4" long and the other 6 are 1 1/8" long. When I took them out I thought they were all the same length except for 4 bolts that were holding...
  7. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Rick. So I can use SS as well, if I wanted to!?
  8. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    I am going to replace the intake manifold bolts, because the heads are rotten and partially stripped. I like to replace them with the same correct washerhead bolts. Can anybody tell me what strength grade these bolts are? Is it a 5 or 8 or ????
  9. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Scott, do you really think that's a good plan? Swapping out the whole engine for one that has a balance shaft, just so I can get the cheep mounts instead of the squishy ones. Maybe I am missing something here.
  10. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Lou, that was good info. Also I will most certainly make sure that all the threads and holes are clean. Which one of the 2 did you use?
  11. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Btw, I just finished repainting everything and while I was doing the flywheel I realized how heavy that baby is and I thought, if that engine came to an abrupt stop that flywheel would just keep on going and maybe that's what broke the crank. Just a thought Anyway I was also wondering if anybody...
  12. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    New crank is in and properly torqued, pistons are back in and now I am waiting for my gasket sets and a few other parts to finish my engine. I have a question about the engine's serial number. I found 3 labels on one of the valve covers. One for the transom assembly, one for the engine and one...
  13. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Lou and Nola. Does Permatex make an equivalent to Merc Perfect seal, OMC gasket sealer? Is Permatex "Form-A-Gasket/Sealant 2B a suitable substitute? Lou it looks like the oil pan gasket you are referring to is a split gasket. Mine is a solid one piece rubber gasket. Looking at the old...
  14. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks to Kenny Nunez, who put me in touch with Mike Reed of New Orleans, an incredible competent machine shop who just finished a replacement crank for my engine (including all matching bearings) and now the putting the engine back together will begin. Question: Do I need to put a sealant...
  15. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    no kidding, Lou! Thanks Rick now I know what that thing is. As promised here are more detailed pictures of the broken crank. Could it just be a material defect or fatigue? Also I noticed now that the crank is out that there is about a 1/4 of an inch of longitudinal play in the cam shaft. With...
  16. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    Thanks Scott for all that good info. Kvkon I will put up a better picture of the crack when the crank is out of the block. Another question. Das anybody know what this can is (see pic)? It sits at the end of the engine block off to the side near the distributor. It's not on the intake manifold...
  17. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    This is all extremely interesting to hear you experts exchanging thoughts. Wow, what did ever happen to that poor engine? The number on the crank is 10105865 2. What does the 2 stand for? The break is right in the middle of the crank between 3 and 4. What do you call those polished sections of...
  18. Rivergator

    Overhauling my 1988 MerCruiser 4.3 ltr. engine

    .....continued from "Engine Removal on 1988 Sylvan" We had 2 nasty hurricanes in the last 3 months and I am just now caught up with cleaning up everything. 2 weeks ago I was finally able to start taking the engine apart and to my surprise, the engine looks very good inside. No visible...
  19. Rivergator

    Engine Removal on 1988 Sylvan

    To quote Searay205 "This is better than a reality show" so this project will continue under a new thread. Both the engine and out drive have been removed from the boat which was the purpose of this thread and mission has been accomplished. The next chapter will be "Overhauling my 1988 MerCruiser...
  20. Rivergator

    Engine Removal on 1988 Sylvan

    Kenny, you asked me what trim rams I have. That's what it says on it.
Top