7.4

Hi all... I have a 2000 340 Sundancer. I purchased it about 10 months ago, has a little over 1000 hours on 7.4 engines. We live on a floating home on the Columbia River in Oregon so we keep it parked out front. We've had a few days of freezing but I have a bilge heater and keep a light bulb...

Hello all, 1991 SD 310 I have recently changed the oil on both 7.4 engines with v drive both were running just fine. After oil change port side engine will not crank. No click, nothing. I assumed it was the ignition switch and changed that but no change. Now I'm zeroing in on the starter...

How do I start a new thread or forum for a conversation on how to fix my boat I'm having an issue with it

The oil lines on my Mercruiser 7.4 Gen V are leaking at the point where the hose is connected to the fitting. It's just a slight drip, but it's enough to make a mess. I'm looking to replace them, but have found out that they are no longer available. I'm assuming this is because people have...

Bought the boat in 2014 and only ran it during sea trial and winterizing. When we bought the boat I knew there was a problem with the port motor and ended up rebuilding it. During the sea trial and winterizing I seem to remember the starboard motor running very smooth with no issues (of course...

Hey CSR! I'm looking in to getting a classic Sea ray 268 sundancer but I'm wondering what fuel economy is with the 5.7 vs the 7.4 and top speeds. How were these boats built and how do they handle? Im just Wanting to know everything I should before going to look at them. Thanks !!

Hello CSR! Hoping somebody would be able to help me with this... I have a choke issue I believe in my twin 1989 7.4 454's with I think Rochester carbs. If you look at the photo I'm pretty sure the choke flap is supposed to be completely closed not half way like mine is. Is there a adjustment...

My marine mechanic left the drain plug in after winterizing:smt089. It sat the entire winter under a cover, but rain and snow still got in, because the bilge had water up to the deck. I have to give the guy credit, because he's taking full responsibility for the mistake. The lower half of the...

Water Drip Behind Engine on 99 Sundance 260 with sea water cooled 7.4L/Bravo III I have water dripping behind the engine on my 1999 Sundancer 260. The 7.4L engine is sea water cooled (that is sea water circulates through the engine). With engine off, the drip stops after a while. I assume it...

I am experiencing a drop of RPM's on my port engine. If I run 3,000 - 3,200 rpm's it seems ok. This past weekend I had 8 adults and had to give it more throttle to maintain plane. The rpm's started to drop off. Then it would surge to normal for a couple of minutes, only to drop off again...

Hi , my name is Tom and i am was just lucky enough to purcahse a 1997 370 sundancer that needs new engines. The former owner started to dismantle the old ones so really not even a good core between the two. The trannys seem ok. These were Generation 6 454 7.4 carb motors. My question is...

I have a 7.4 liter that is RWC. It appears that it uses a 140 deg thermostat. For those of you with a similar setup, how long does it typically take to get up to operating temperature? I start the boat and let it idle for about 5-10 minutes before departing, and typically if I stay in at...

Hi , just bought an 1998 Overnighter 260. Didn't want a cruiser (can't trailer, 2 engines $$$, loss of driving sensation) Didn't want a sport boat (no freaking winshield, small cockpit, huge space wasted "engine hatch") So... Who wants a boat with a cockpit with poonton space, luxury and...

Hello Everyone, My wife and I just purchased a 1997/8 230BR select with 7.4 and BravoI drive. Unbelievable shape. This is our second SR (still have a 00' 180BR!) The boat has verifiable 92 hrs and a 1yr old outdrive. (Old one was stolen). We had our first outing this past saturday and were...