Mercruiser Pre-Alpha approx 1976..<br /><br />On the back of the upper housing just below the cap, a rust hole popped thru today.<br /><br />Saw rust mark from when the water dribbled down about an inch out of the hole.<br /><br />I'm trying to remember if this location is a water jacket inside...
This is a Cobra I/O 351 Ford application:<br /><br />After searching the I/O forum I can't find the post about something dropping inside the outdrive when a certain plug was removed?<br /><br />I'm trying to remember if that post pertained to an OMC Cobra or Mercruiser outdrive?<br /><br />Does...
1976 24 Searay 351 Mercruiser 233 hp<br /><br />I'm wondering which is the best way to determine what's causing a slight howling/scraping type noise - I swear - I'm begining to hear comming from the backside of my 351? when idling the engine.<br /><br />I'm thinking, remove the belt first to...
Mercruiser 1986 gimbal with newer style Tilt/Trim cylinders is being pumped by a 1976 older style trim pump.<br /><br />Can that cause the outdrive to move up and down real slooooooow?<br /><br />No lines are crossed. Switches work fine. Pump is pumping to beat the band. Sounds like it's working...
1976 24' Searay 240 Fly Bridge Sedan<br />351 V8<br /><br />Switching my mercruiser over from 1.32r to 1.5<br />Can anyone tell me how many RPM's I should increase after changing my gears over?<br /><br />Boat won't go over 4200rpm with the 1.32ratio<br />Got a 12P prop<br /><br />Talked to a...
I am looking to swap my 1976 Mercruiser 1.32 ratio outdrive for a 1.50 - Drive Gear 20 teeth, Driven Gear 22 teeth.<br /><br />If anyone would like to swap out, with no money exchange please contact me.<br /><br />My current drive = Drive Gear: 20 teeth, Driven Gear: 17 teeth.<br /><br />Mine...
24 foot Searay 240 Fly Bridge<br />Mercruiser 233hp Ford 351W<br />Pre-Alpha 1976 (roughly)<br /><br />My upper unit vertical gear has 20 teeth.<br />My upper unit horizontal gear has 16 teeth.<br /><br />Anyone know what gear ratio I have in this thing?<br />Is this a 1.32r? <br /><br />I've...
Application: 350 GM 260 HP Mercruiser 1986 Wellcraft 23 foot.<br /><br />Can't find the post that explained the cause of an occasional drip of water from the shift cable right on top of the engine?<br /><br />Anone know what is causing this?<br /><br />- Change the cable?<br />- Change the...
What's a good safe product to use to cover the underside of my engine covers.<br /><br />My engine is loud as heck at 3 grand rpm. which is my happy speed.<br /><br />Right now I've got 2 covers constructed of marine plywood with no insulation under them.<br /><br />any ideas?
This is a Pre-Alpha 1 drive mounted to a 351W in a 24' Searay.<br /><br />Always goes into gear and the noise has not increased at all over the summer but I have to say, the bang when it goes into gear sure is louder than I'd like to hear it shift.<br /><br />Anyway to quiet this thing down?<br...
Removed starboard side valve cover and found 2 rockers off...<br /><br />1 push tube broken, and one was just laying off to the side..<br /><br />2 valves were stuck shut..<br /><br />We freed up one, and are soaking the other hoping to save this engine in the wind up.<br /><br />Take care and...
1986 Wellcraft 23 Foot<br />Engine: GM 350 CUBE 260hp <br />Drive: MERCRUISER ALPHA 1<br /><br />Engine idles nice and quiet all day long, but bring it up just a bit say 1900 to 2100 and an erratic internal knocking sound starts.<br /><br />It's not a steady knock like a rist pin or bad rod...
Boat is a 21 Seapro WA 305 I/O with a bent skeg.<br /><br />This boat leans left like a Mo Jumper... <br /><br />It does not PULL LEFT -- it only leans to the left like crazy.<br /><br />There are no trim tabs on this boat...<br /><br />however,<br />Yes, it does have a stabilizer fin on the...
The cause of my 305 I/O to backfire at high rpms was dirty water infested carb.<br /><br />Cleaned carb out, and problem went away.<br /><br />Boat runs super at WOT now.<br /><br />Thanks for those who put their 2 cents in on my request.<br /><br />PB
I've read that outdrive washers/coolers help to keep the outdrives from cooling down to quickly thus extending the life of the outdrive.<br /><br />Anyone have any info/results on using one of these tubing type outdrive washers/coolers?<br /><br />Thanks,<br />CaptainHook
