1991 cobra 3.0. I replaced the tilt trim pump to transon hydraulic lines. This required pulling the engine and inside transom bracket. After putting it back together I had to align the engine and gimble bearing with my alignment bar. I had to lower the forward engine mount by 17 complete...
Makes sense after you explained it. Ty. Also why when running on muffs the exhaust and water exits there and it’s not a torn or disconnected bellows after all.
Replacing the inside trim lines on my 1990 OMC 3.0 Cobra. I removed the engine and the inside transom plate and the upright exhaust pipe. I see that the exhaust can either go through the bellows or before the bellows there is a large opening to the outside. My question is what is the purpose of...
Not my boat but a coworker has a 91 Four Winns 3.0 Cobra. He states that at all stages, idling, accelerating, cruising on plane, the engine will just shut down as though the key was turned off. Says there is no sputtering or any sign the engine is fighting to stay running. Then after coming to a...
I am replacing the carpet on a 1998 Crestliner Superhawk. The factory has divided up the floor into 3 tightly placed pieces of plywood. Each piece is individually carpeted with the carpet wrapping underneath and fastened. It would be easier and quicker for me to replace the carpet as one piece...
Re: 3.7 470 alternator conversion / brackets measurements write up
This shows my 2nd attempt at making a bracket for belt tensioning. It's close to a 90 degree bend (maybe 70?). My first prototype curved to gradual and hit the alternator housing. I jigged up the 1/4"x1" strap metal, heated it...
Re: 3.7 470 alternator conversion / brackets measurements write up
The above series of pictures shows my first dry fitting and the lack of movement or pivot due to the square corners of my brackets hitting the housing of the alternator. The brackets were modified as shown to allow...
Re: 3.7 470 alternator conversion / brackets measurements write up
Sorry Commander Biffle. This is only a write up for those that plan to tackle the alternator conversion with the end result of something similar to this picture. I agree it could be quite boring unless you are looking to do...
Re: 3.7 470 alternator conversion / brackets measurements write up
This pic shows the critical measurement of 3.625" (3-5/8")
The relocated coil. I had to grind down the gold bracket so that it fit in to the space of the valve cover so as to share the valve cover bolt. Did not have to do any...
I decided it was time to do the alternator conversion on my 470 (serial #5641951). I looked at different pictures of how others had done this themselves to save some $$ and decided on the high mount method as I don't have p/s. I started by taking some measurements. In the above pic I will be...
Anybody want to weigh in on the reasoning to replace the entire gimbal bearing housing requiring a puller versus just replacing just the bearing insert? On my pre-alpha (MR1 ?) I can reach through the bellows, with some tools for leverage, and rotate the bearing on its outer race to the cut away...
while out on my first boat trip this season I heard an exhaust leak coming from back of the 470 engine. I assumed the rubber boot had come loose and upon investigating could see exhaust and water coming from this boot area. No big deal I thought just loose and the water was simply fresh water...
Thinking my problem may be a check valve in the pump. Can easily trim up the drive on this 1980 Mercruiser 470. Try to trim down and no movement but pump is running. Pulled the hydraulic lines, both down and up, from cylinders and fluid pumps out as you would expect i.e. fluid pumps from down...
I have the LU on the bench and everything is back together. There is no oil in it yet. My question, and I know it's hydraulic assist shifting, at this point should I be able to manually change gears? With great effort on the push rod, I can't get any movement at all. My concern is that even with...
