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  1. Lou C

    Volvo Penta Cobra Gasket

    BTW Coat the mating surfaces between the drive and the pivot housing with marine grease like triple guard grease. It will keep the drive from corroding onto the pivot housing. This sometimes happens on these 94 & up units. I would also coat the inner & outer lip of the bellows & the bearing...
  2. Lou C

    Volvo Penta Cobra Gasket

    Normal. The OMC Cobra drives from 86-93 use that gasket, the Volvo design ones from 1994 & up do not, only that irregular shaped oring for the water passage.
  3. Lou C

    setting the timing on 1989 4.3 OMC

    I’d also check the propeller for damage & prop shaft for run out. That early 4.3 has an even fire crankshaft but that didn’t totally eliminate the vibs inherent in a 90* V6; these will have a vib you can feel at about 1500-1700 rpm that you can feel even in neutral. However this also depends on...
  4. Lou C

    Merc 260 fit in Winns 190 Horizon bay?

    Basically from what I can see with the marine units they have a gasket under the distributor cap & a steel screen in the vent on the bottom of the distributor body.
  5. Lou C

    Toyota/Lexus Timing Belt Change Thoughts

    If possible I’d see if you can remove the covers over the belt drive and see what the belt looks like. If there are any cracks or fraying I’d get it done. If not you can decide not to do it just yet. BTW we had twin cam 4 Cyl Toyotas back in the 80s & 90s and had the cam belts changed at 60,000...
  6. Lou C

    does volvo penta 4.3gl and merc 4.3 use same block

    Post up some pix. OMC Cobras from 1986-1993 were the dog clutch model and then in 1994 they (OMC) were bought out by Volvo and the design was changed to what is essentially the same as a Volvo SX. Which is what that boat you have likely has. If it’s the older OMC drive I wouldn’t change what you...
  7. Lou C

    Merc 260 fit in Winns 190 Horizon bay?

    Chinese HEI? I’d rather have an old Prestolite marine points distributor!
  8. Lou C

    does volvo penta 4.3gl and merc 4.3 use same block

    If you take a look at engine remanufacture websites you can see the engines they sell grouped by what variation they are of the series. The 4.3 went through many variations and the major ones were: 1985…2 piece main rear seal, flat tappet cam 1986…1 piece main real seal 1987-88 same as above but...
  9. Lou C

    does volvo penta 4.3gl and merc 4.3 use same block

    If the block was cracked the cyl heads are probably also. You need a GM/Chevrolet 4.3 of about the same time frame as that marine 4.3. As far as the engine itself it’s all GM. Only the added accessories to make it work in a boat are Merc or Volvo. What year is the boat it came out of? The only...
  10. Lou C

    does volvo penta 4.3gl and merc 4.3 use same block

    They are all GM/Chevrolet engines…. I’d remove the intake manifold to see if the block is cracked in the cam valley before spending any money on it…
  11. Lou C

    setting the timing on 1989 4.3 OMC

    https://www.streetmusclemag.com/tech-stories/uncovering-secrets-ignition-timing/ Ok there is a pic if you scroll down that shows you exactly what your timing tab looks like. It's the one with the engine block painted blue.
  12. Lou C

    setting the timing on 1989 4.3 OMC

    I think it's a website issue.
  13. Lou C

    setting the timing on 1989 4.3 OMC

    What you need to do is clean up the harmonic balancer which will have a slot on it (I put a dab of white paint on it so it shows up) and the timing tab that’s attached to the timing chain cover. This has notches that represent 0*, 2*, 4*, 6*, etc, BTDC (before top dead center) will be to the...
  14. Lou C

    setting the timing on 1989 4.3 OMC

    Those Prestolite distributors have a centrifugal advance system under the points plate. Simple set up of flyweights and springs. The standard setting for timing is 6* BTDC. This is set at idle speed. As far as spark advance total timing advance the centrifugal advance adds 12* at 3200 or so RPM...
  15. Lou C

    Starter install help.

    Yep there are 3 terminal staters & 4 terminal starters. When buying a new starter you need to check yours first. I also like keep a spare starter solenoid in my spare parts bin just in case because these sometimes fail whereas the rest of the starter itself can be fine. I like ARCO starters &...
  16. Lou C

    My 84 4winns horizon 195 project.

    When I dug the foam out of my boat when doing a partial deck replacement I found 95% of the foam was totally dry only the bottom most 1/8” was damp. That was surprising to me…. Can’t wait to see more of your pix! Remember that a boat like yours or mine is about $75,000 brand new and what you’re...
  17. Lou C

    1990 Chris-Craft Concept 4.3 OMC Cobra PLEASE HELP

    You will find it MUCH easier if you get ahold of an OMC shop manual with the factory wiring diagrams. That is for the engine & trim system. The dash wiring is separate, it might be available from Chris Craft, I was able to get one for my boat from Four Winns. BTW I think in that time period both...
  18. Lou C

    1990 Chris-Craft Concept 4.3 OMC Cobra PLEASE HELP

    Cobra doesn’t have the fuse on the starter solenoid like Merc but there are 2 large 50 amp fuses in a rubber fuse holder near the big cannon plug. The rubber fuse holder is snapped into the back of the shift linkage bracket. If your gauges go on & your trim works but accessories don’t something...
  19. Lou C

    Tips On Replacing Starter

    I like to get parts from a local marine supplier he is very knowledgeable and knows which brands the mechanics like and which ones they don’t. He also gives regular customers a discount! And also knows other professionals that boat owners need like upholstery or fiberglass.
  20. Lou C

    OMC Cobra won’t shift out of gear

    Yep you start with the drive off and first set the shift rod height. Then you use those 2 tools to set up the transom shift cable. Then install the drive & check the adjustment of the remote control cable. The idea is to get equal throw & full engagement on both sides of neutral. You need a...
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