Block drains 2007 22ve

[wakewilson]

I have been in a discussion off line with chpthril about winterizing and draining the water from my engine block. He has helped me out tremendously. I have run into a few questions and wanted to see if anyone with a 2007 22ve could also shed some light.

I found the manifold drains no problem and everything drained out as I expected.

The block drains were very puzzling to me. I took off the (I assumed it was the knock sensor) on the starboard side but no water came out. On the port side there is only a hole where chpthril described and sent picture which showed a bolt for the block drain. ??? Chpthril has a 2006 22ve and I have a 2007, so I assume there are some minor differences.

I was reading in my Marine Power manual and it listed that an EFI 5.7 liter has the knock sensor on the port side. I did see another sensor on the port side but didn't mess with it. Could this be the port side block drain?

Would there be a drain on both sides, or would it be possible to just have the block drain on port side knock sensor?

I will try and get some pictures later this week.

Thanks in advance.

[hoppas]

It's always a good idea to poke a metal coat hangar into the drain hole and make sure there isn't an accumulation of gunk that is plugging the hole. On my boat (2004 MP 5.7L vortec) I generally get a lot of water out of the first side of the block, and not much out of the second side. I have a knock sensor (starboard) and a valve (port).

If you had a missing block drain plug on the port side, you would surely have noticed a lot of water in your bilge. It might be time to give your dealer a call and see what you should expect as it's not worth taking chances!

[tarheeler]

i saw a new 2007 rz2 this summer and it had a sensor on both sides.

[turbonine]

I just pulled out the drain plug on my Indmar(which should be the same GM block as the MP)for a shower install. The plug was on the port side about 3-4 inches above the spark plugs. I think it was above the 2 plug from the bow. The plug was a 3/8 and had a 5/16 square drive to it. Initially it looked like I could just take my 3/8 in drive socket wrench and use it, but that turned out to be too big. Ok use the 3/8 to 1/4 inch reduction adapter, nope too small. After search stores for a suitable adapter i learned that they don't exist. I called Paradise and they told me it was a 5/16 drive and that they had to have Snap-on custom make it for them. They were nice enough to let me borrow it, and it worked perfectly.

[hoppas]

My shower and heater are fed from a plug above the spark plugs also. On mine, the plug actually goes into the intake manifold. The block drains are below the spark plugs on the side of the engine block below the heads. I wouldn't expect much if any water to come out of the intake manifold plug unless the engine was running since it's at the very top of the motor.

[Timmy!]

My RZ2 had knock sensors on both sides. I pulled them and a lot of water came out of each side.

[wakewilson]

They were 7/16 bolts, correct? Did you have to poke anything in to get it to drain out?

[chpthril]

My RZ2 had knock sensors on both sides. I pulled them and a lot of water came out of each side.

They were 7/16 bolts, correct? Did you have to poke anything in to get it to drain out?

Unless MP switched to a new style KS, there should be a hex (for a wrench or socket) right at the base of where the connector seats. I think its about a 7/8th's hex, but I use a medium crescent wrench because the Knock's are not real tight and the crescent fits in a plastic tub easier then a big 7/8th's wrench.

I keep what tools I need, to drain, right on the boat so I can drain right on the ramp after an off season run.

[FIC]

2007 mp went with 2 knock sensors, they use a 14mm head , but be very careful they are fragile and you can damage them , dont over tighten.

[wakewilson]

So both of these knock sensors should be my block drains. It is still very strange that no water dumped out when I took out the starboard side. It also would seem strange for an engine this new to have debris or something blocking it. I'm going to try it again tomorrow.

It is suppose to be 70 degrees here tomorrow, I don't know why I'm trying to winterize, I should be on the water.

[chpthril]

So both of these knock sensors should be my block drains. It is still very strange that no water dumped out when I took out the starboard side. It also would seem strange for an engine this new to have debris or something blocking it. I'm going to try it again tomorrow.

It is suppose to be 70 degrees here tomorrow, I don't know why I'm trying to winterize, I should be on the water.

I agree


Maybe a little casting sand or sediment from that "clean" water we run in, but I would not think it would be that much. What did HQ say? I would have probably been Bobby or Mike that worked on it.

[wakewilson]

I got my block drained today. What I wasn't doing correctly was that the knock sensor is bolted into the actual block drain plug. I mistook the sensor bolt for the drain. I used a 1/2" on the knock sensor bolt and 3/4" on the plug itself. Drained out about 10 gal and I used the shop vac to get all of it out.

Bitter sweet.....it was about 70 degrees out today.

[dogbert]

Yeah, I drained my boat also and it was 85. But, that's probably going to change.

[scoot18]

Don't forget to drain the V drive cooler

All of this talk regarding draining the block, don't forget to drain the "V" drive cooler. There is water sitting in that as well. There are two shallow bolts in the lower forward face of the V drive housing that will drain, line in & line out.

[chpthril]

All of this talk regarding draining the block, don't forget to drain the "V" drive cooler. There is water sitting in that as well. There are two shallow bolts in the lower forward face of the V drive housing that will drain, line in & line out.

Good point Scoot.

Those things are tough to get to through the access hole unless you have 2 elbows. I found last year that by pulling the raw water hose off at the Transmission cooler, you are able to drain most (but not all) of the water from the V-drive cooler because it laws so low in the bilge.

I go this route only because we plan on using the boat through out the winter and drain it on the ramp after a ride. If I were going to put it up for and extended time, I would use the drain plugs on the V-drive cooler.