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  1. Lou C

    454 Merc started on muffs was water coming out exhaust then not much.

    You may have to resize your pix in Microsoft paint or whatever you have on your computer. If the boat has a Bravo it may not suck in water when running on the muffs unless the impeller is in really good shape and your muffs fit very tightly. I'd use the Merc/Quicksilver muffs with the steel rod...
  2. Lou C

    Holley 4160 set up questions.....

    Hello all, I didn't want to rebuild my 30 year old Q-Jet again so started thinking about possible alternatives. There's Holley and Edelbrock. On this engine (OMC rigged 4.3) I do not think the Edelbrock would have fit because of the OMC shift linkage bracket and relays on the starboard side. The...
  3. Lou C

    Trim won't lower on 93 Chris Craft OMC cobra outdrive

    There is actually a manual release on the Cobra trip pump, it is a screw on trim pump near where the hydraulic lines come out.
  4. Lou C

    Help with Outdrive Removal for Bellow Replacement...

    The Cobra uses a gasket between the pivot housing and the upper drive and as long as you coat it well with gasket sealer and the bellows doesn't leak, it comes right off. 20 min job.... I honestly think it would have been a better plan, to haul it off to a good machine shop. I never liked the...
  5. Lou C

    First Time Mercruiser Oil Change - My Experience

    That pump may be why it took so long. A good vacuum pump will work better like the Topsider. I have been using one on my '88 OMC 4.3 and fabbed up an adapter for the male garden hose threads on the top of the dipstick tube. With this, it sucks out all the oil in less than 5 min. I use a Merc...
  6. Lou C

    Flame Arrestor

    I would not mod a flame arrestor. Take a look at Holley's or Edelbrock's websites, they do sell flame arrestors with dimensions. I have a 4bbl OMC style one for the Quadrajet (which also fits the Holley I bought as a replacement) that is pretty low. As you can see its about the same height as...
  7. Lou C

    exhaust flappers

    The flappers they used are the same as the ones used on the OMC Cobra and they only cause a problem if you had an over heat in the past that melted them, that would cause them to fall down into the exhaust pipe and they could possibly block the exhaust. Volvo said that they didn't think they...
  8. Lou C

    Rusty valve stems, what do I do next?

    The engine does not have to come out if you have good access. The compression test is a basic test that you can learn from any shop manual. I advise getting a hold of a Chevy engine manual and lean the right way. That sounds like a bad overheat, that probably scorched the rubber exhaust hoses...
  9. Lou C

    impeller and housing install 1991 OMC Cobra with 4.3L

    The manual advises that you use OMC gasket sealer to glue the cage in the housing and seal the gasket. I also use it on the bolt threads, it helps keep them from seizing. Sometimes I've had a gasket that refuses to lay flat in the groove in the housing and I've better luck using a thick grease...
  10. Lou C

    '08 Volvo Penta 5.7 GI Water In Cylinders

    Agreed the leak down test is not a necessity but a very good diagnostic tool because it will tell you where the comp loss is occurring, intake valve, exhaust valve, or piston rings. If your comp test results are good (usually you will see between 160-175 or so) then you don't need to do it, but...
  11. Lou C

    So I've been thinking

    What I'd do is use the Vortec heads, get a cast iron Vortec 4-bbl intake, a Holley 4160 calibrated for the V6 engine (Holley already sells them set up this way, just look on their website) and get the Barr aftermarket Volvo center riser style exhaust. You can still get the fuel line made for the...
  12. Lou C

    1993 Mercruiser 4.3 v6 valve fine tunning

    first pic shows how to use the all thread or long bolt with head cut off to slide back manifold, second pic shows what the adjustable valve train looks like.
  13. Lou C

    Oil change tips for volvo 4.3 GXI-E

    I've used Sierra Marine oil filters for years on my 4.3. I use the Topsider vacuum pump with a garden hose attachment its very fast after you pump it up. I use the Mercruiser 25/40 Marine oil because it holds up well and has better than typical corrosion resistance. I found their claims of this...
  14. Lou C

    AQ 151 spitting oil out of the oil trap

    some pix....
  15. Lou C

    Overheating with ear muffs

    These work great!
  16. Lou C

    Sorry, Another Winterization Thread

    started with this....
  17. Lou C

    Sorry, Another Winterization Thread

    started with this....
  18. Lou C

    Any experience with Fel Pro marine gasket sets on the 4.3?

    OK these are 2 general questions, applicable to either Merc, Volvo or OMC....anyone had experience with Fel Pro Marine gasket sets? I ask because I am about to put my 4.3 back together with a set of re-man heads, and all new gaskets. I called Fel Pro to ask about installing the intake gaskets...
  19. Lou C

    Replacement Valve Covers - Stay OEM? Cheaper alternatives?

    Just treat the rust with rust converter and spray em up. Screw Volvo and their parts highway robbery.
  20. Lou C

    Engine getting hot

    here's a crude pic, that I copied off the net (haven't put all my old pix of my engine on my new computer yet).....
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