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  1. Lou C

    Greasing splines on the outdrive

    Re: Greasing splines on the outdrive Removing the drive is not difficult but it is heavy, I build a wood stand to remove and install my OMC Cobra. I know for sure my OMC manual said that the drive has to be removed each year to grease the driveshaft splines, and also to check and grease the...
  2. Lou C

    OMC Throttle control

    Re: OMC Throttle control The original OMC controls had a chrome handle with a black insert that said "OMC" on it, those did not have a button but you just pulled it out to disengage the shift system. They were actually pretty well made controls, mine still works fine after 24 years.... The one...
  3. Lou C

    OMC outdrive cooling nipple that connects hose to transom

    Re: OMC outdrive cooling nipple that connects hose to transom Taking it off is easy, remember the Cobra has to be in neutral not fwd like an Alpha. Getting it back on can be tricky, I recommend building a stand like mine, it's easy took me a couple of hrs one winter day.... I am actually going...
  4. Lou C

    4.3 cobra I/0 on a 20 ft conquest boat. Sat for 5 years what should I do?

    Re: 4.3 cobra I/0 on a 20 ft conquest boat. Sat for 5 years what should I do? Get the tank cleaned out Just get a new battery Pull the drive and check the bellows, gimble bearing and u joints. IF you see cracks in the bellows replace it. the Cobra has a very easy to replace impeller, under...
  5. Lou C

    Cobra Winterizing Plugs on gimble ring..........

    Re: Cobra Winterizing Plugs on gimble ring.......... He is talking about 2 different things, the bolt that is in the center of the UPPER unit, which was covered by the Cobra emblem, is the one you should never remove. On the pivot housing, which is the part the upper gear housing is bolted to...
  6. Lou C

    Mercruiser Risers for OMC Engine

    Re: Mercruiser Risers for OMC Engine There is an aftermarket conversion available for the batwings which you can't get anymore. I have the bat wings on mine and I don't think they are bad at all, as long as they are in good condition. Mine started clogging after 5.5 seasons in salt, I had a new...
  7. Lou C

    OMC 4.3L Overheating. Read all the other threads already....

    Re: OMC 4.3L Overheating. Read all the other threads already.... Here is what you need (this is a GLM kit but I'm sure you can get OE stuff at a BRP dealer, or even a Sierra version)...the thrust washer goes on first (big silver on at left) with the TAPER matching the TAPER on the prop shaft...
  8. Lou C

    OMC 4.3L Overheating. Read all the other threads already....

    Re: OMC 4.3L Overheating. Read all the other threads already.... Either they got the wrong thrust washer on there, put it on backwards or for some reason the thrust washer did not slide up the prop shaft far enough...the washer has a tapered area, that slides onto a taper on the prop shaft...
  9. Lou C

    OMC lubrication points question

    Re: OMC lubrication points question The main thing is to make sure you get the correct amount of fluid in the drive. It is easy to underfill them if you do not do it correctly. You drain from the bottom most hole, with the dipstick out. Then replace the drain plug, and rest the dipstick in the...
  10. Lou C

    Pulling the OD

    Re: Pulling the OD Pulling off the drive, as long as the splines have been greased in the past, should not be a problem... But if you build a stand like mine in the pic, it makes it a lot easier, because when you put the drive back on, you have to keep the ujoints aligned straight to get the...
  11. Lou C

    Is it a Cobra

    Re: Is it a Cobra It could be either a pure OMC dog clutch, or a joint venture OMC/Volvo, the pure OMC dog clutches were flat across the top, the joint ventures had a hump on the top like a Volvo SX, check the #as noted......
  12. Lou C

    Rear Cylinders moisture

    Re: Rear Cylinders moisture Well for one thing, even with a 143 thermostat, I would not run a 5w-30 in a marine engine, in fact Merc recommended either straight 30 at temps up to 50* and straight 40 at temps over 50, before they came out with their 25-40 oil. Volvo recommended 20w-50, or...
  13. Lou C

    Want to change spark plugs - 92 7.4L King Cobra

    Re: Want to change spark plugs - 92 7.4L King Cobra I wish I could offer a suggestion to make it easier, seriously you gotta wonder what some of the boat designers were thinking of when they design things, if you put the engine down below deck level, then leave a foot and a half around the...
  14. Lou C

    great diagnostic tool....

    Just picked up a Radio Shack laser thermometer, these things make it very easy to check important things like manifold/exhaust tube temps, verify proper thermostat operation, etc. I found that my new manifolds run at 115-118* idling through the channel, and 135* or so after running on plane for...
  15. Lou C

    1992 King Cobra 454 - Overheating and loss of power

    Re: 1992 King Cobra 454 - Overheating and loss of power You don't have to replace it unless you see big chunks of rust coming off inside. You can remove it (good time to check the thermostat) and look through all the openings, to make sure they are not getting necked down with rust. If so you...
  16. Lou C

    OMC cobra outdrive - how to know how much grease ?

    Re: OMC cobra outdrive - how to know how much grease ? Dude you are greasing the gimble bearing, if you are using the grease fitting on the side of the transom mount... You can't grease it too much, don't worry, but to grease the ujoints, you have to remove the drive, see here are mine in this...
  17. Lou C

    Here I go again!! 1995 Sea Ray 220 Signature Deck and Stringer Restoration SPLASHED!

    Re: Here I go again!! 1995 Sea Ray 220 Signature Deck and Stringer Restoration Re: Here I go again!! 1995 Sea Ray 220 Signature Deck and Stringer Restoration You know you might want to re-think that, if the foam does not get out fast enough, it can pop your deck loose quite fast, it expands...
  18. Lou C

    omc cobra drive removal help!!!

    Re: omc cobra drive removal help!!! That doesn't sound good to me....check the threads in the ujoints to make sure they are not stripped... I built a cart to hold the drive with casters so I don't have to hold it up with my back when removing/installing... When you have it off, check the...
  19. Lou C

    OK here's another odd one for Cobra owners who still have points...

    I was getting my old 88 Cobra ready for the season, and had an odd thing happen. The engine started well from winter storage, then starting doing something it never did before. It would gasp and stumble if I ran it with the shift system in neutral, with the handle pulled out all the way. But...
  20. Lou C

    1988 cobra outdrive installation hangup

    Re: 1988 cobra outdrive installation hangup The original style bellows were a bit smaller than the newer ones, I'd consider replacing the bellows with a new OE one, which are bigger inside. Also look in side the coupler with a flashlight and see if there is a lot of caked on grease in there, if...
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