Author Topic: CV23 Exhaust: Yet another thru hull exhaust thread... (Read 43514 times)

Shrom CVX-18 · « **Reply #20 on:** April 17, 2011, 05:28:05 PM »

Very nice! looking great man. Those tips will look good. Not sure yet whether I am going to put my external flappers on or not. I have internals. I want to just to be safe. But it def looks better without them on.

Rosscoe · « **Reply #21 on:** April 17, 2011, 08:09:31 PM »

Those tips look awesome! I think you made a good choice. After all, yours is a CV23 made for cruising. You might want to have a conversation while boating.
Manifolds look nice for the price too. I wonder why someone took those off?

Hot Carl · « **Reply #22 on:** April 18, 2011, 12:53:02 PM »

Rosscoe - the manifolds were taken off a wrecked boat with low hours. I couldn't believe they went so low on ebay. Shipping cost more then the manifolds!

And thanks for all the compliments on the tips guys - I think they look pretty good installed (yes, even with the external flappers)...

As you can see, Jeff and I were able to get everything done yesterday...we got the outdrive off, lifted the engine out, took out the y-pipe and installed the block off plate, dropped the engine back in, measured and cut the holes, permanently installed the tips, bolted up the new manifolds and buttoned everything up. And we only had to run to the hardware store 3 times..that ain't bad at all! Now I just have to mount the starter solenoid, fuel-water separator, and install the new t-stat and cooling hoses and I'll be done.

And when I use "Jeff and I" - that's a misleading statement. Jeff took the reins and did a lot of the work and I can't stress enough how awesome he is - Jeff's one hell of a guy and knows his stuff.

I didn't take many pics of the process; most of these parts are identical to the ones the other guys used, and it all goes together the same. The good news for anyone trying to do the conversion is that these Mercruiser S pipes work great with our boats - we had to move a couple things around to make it work, but nothing even close to major - it's a very straight forward install.

I can't wait to hear this thing run with the new pipes - I should have it finished and running by the end of the week. I'll post some more detailed shots when it's all done and cleaned up...

Big, big thanks to Jeff

Hotwired · « **Reply #23 on:** April 18, 2011, 01:33:10 PM »

Wow, did that ever come together nicely!

CVX Fever · « **Reply #24 on:** April 18, 2011, 02:43:27 PM »

Alex the install looks great!8) You guy's got a lot more accomplished than I did yesterday....LOL
Nice work!.

Shrom CVX-18 · « **Reply #25 on:** April 18, 2011, 04:17:52 PM »

Great work man! I would have to agree Jeff helped me out too, the email he sent me with the steps involved to do this project was right on. All of you guys helped me out greatly. I would like to say thanks also.

Alex your right those tips look great even with the flappers on. With your tips being longer then mine you can still see the chrome. Are your tips going to be above water line? Keep up the good work. Glad I could help you out.

Rosscoe · « **Reply #26 on:** April 18, 2011, 09:23:14 PM »

You guys kicked butt! I didnt think you'd have to pull the motor but I suppose it made some if it easier?

Rosscoe · « **Reply #27 on:** April 18, 2011, 09:28:05 PM »

Quote from: Hotwired on April 16, 2011, 03:37:42 PM

The muffed tips will make a huge difference to tell the truth. I had baffles for the Basset Headers on the old flat bottom I had. I loved the sound with the baffles out but would most always get gigged for excessive noise when I ran without them ... which I usually did!

I dont recall seeing that beast on "me and my boat" Am I mistaken? Maybe it needed to be called "Me and my rocket"?
That thing must have been snakey! I suppose you get used to it after awhile.

Hotwired · « **Reply #28 on:** April 18, 2011, 10:34:42 PM »

Quote from: Rosscoe on April 18, 2011, 09:28:05 PM

Quote from: Hotwired on April 16, 2011, 03:37:42 PM
The muffed tips will make a huge difference to tell the truth. I had baffles for the Basset Headers on the old flat bottom I had. I loved the sound with the baffles out but would most always get gigged for excessive noise when I ran without them ... which I usually did!

I dont recall seeing that beast on "me and my boat" Am I mistaken? Maybe it needed to be called "Me and my rocket"?
That thing must have been snakey! I suppose you get used to it after awhile.
No, I didn't have it very long. Ran it a dozen times or so. Un-known to me I was bidding against a friend of mine here who REALLY wanted the Hemi. Get used to it? Ya, kind of. Each passenger I took out in it only went on one ride though. One was enough for them! I really like the way you could kick the cave plate up and punch the throttle and it would LEAP out of water even at about 30 mph. I took my buddy who bought it for a ride as he wanted to see the engine run .. he asked me to punch it ... darn near lost him! I had the wheel to hang on to, he didn't have anything but the sides of the seats. Was fun while it lasted!! I'ld love to have another one but finding another with an old-school Hemi set up the way that one was would be hard to come by I imagine. I bought if for $3200.00. Sold the engine for nearly double that. Kind of wish I would have kept the hull but I was looking for a metalflake Carlson!!

OleRed · « **Reply #29 on:** April 18, 2011, 10:43:11 PM »

Looks Great, nice clean instalation, good work

Hot Carl · « **Reply #30 on:** April 18, 2011, 11:59:30 PM »

Quote from: Rosscoe on April 18, 2011, 09:23:14 PM

You guys kicked butt! I didnt think you'd have to pull the motor but I suppose it made some if it easier?

Thanks man - we had to pull the engine to remove the y-pipe and install the block off plate. All the other guys that did this conversion (with mercruiser drives) had to do the same. Really it's just a pain in the a$$ seeing that it takes about 2 minutes to remove the y-pipe and put the block off plate in...but ya gotta do whatcha ya gotta do.

And thanks Red - hope you've had time to drop the new engine in the Scimitar!

OleRed · « **Reply #31 on:** April 19, 2011, 09:41:09 AM »

Thanks man - we had to pull the engine to remove the y-pipe and install the block off plate. All the other guys that did this conversion (with mercruiser drives) had to do the same. Really it's just a pain in the a$$ seeing that it takes about 2 minutes to remove the y-pipe and put the block off plate in...but ya gotta do whatcha ya gotta do.

And thanks Red - hope you've had time to drop the new engine in the Scimitar!
[/quote]

I still chuckle at the trouble we go too, to make a small change that we want in our boats, and I think I'm about as bad at it only a few.

( It's 9:02 am 168 moments of silence as we remember the bombing of the federal building here in Okc, and the 168 lives lost )

and Nope ... I haven't gone back to work on my boat yet, trying to be responsile and get other people's boats out first, and it Sucks.

I been hooked up Really short on this little woody, but it's coming along pretty good, be ready for the motor next week. and Besides ... there Ain't enough water in our lake to launch my boat . Grrrr ...

Hotwired · « **Reply #32 on:** April 19, 2011, 12:18:03 PM »

Looks like AZ a couple years ago. When This pic was taken the water level was down nearly 50 feet from high water. This is Lake Pleasant north west of Phoenix. The lake was enlarged with the construction of a new dam about 20 years ago and they built a new marina near the new dam which is down river about 1/4 mile from the old dam. They had to blast a channel through the old dam that year so the marina could operate and the new dam could continue to produce power.

Jason · « **Reply #33 on:** April 19, 2011, 02:10:32 PM »

Kind of like here..... White Bear Lake is dry and the rivers are flooded

??

Tonka Jim · « **Reply #34 on:** April 19, 2011, 02:14:26 PM »

And yet Minnetonka is over a foot high with some shoreline flooding

Hot Carl · « **Reply #35 on:** April 19, 2011, 02:18:34 PM »

I remember driving by White Bear a few years ago and being blown away by low it was...but those pictures are ridiculous. I spent tons of time on White Bear and Bald Eagle growing up - what's happening to White bear is so sad

dorelse · « **Reply #36 on:** April 19, 2011, 03:59:09 PM »

I saw those pictures a year or 2 ago right? White Bear Lake hasn't come up with all the snow melting?

Rosscoe · « **Reply #37 on:** April 19, 2011, 05:58:03 PM »

All the snow this year and its still pitiful as are most of the lakes by me. Not as bad as White Bear. Whats it take...a month long non stop rain? I dont even want to go out on the lakes anymore and thats ALL I ever used to do. White Bear is notoriously rocky too, from what I've heard. Never been on it for that reason.

Jason · « **Reply #38 on:** April 19, 2011, 10:54:34 PM »

Quote from: dorelse on April 19, 2011, 03:59:09 PM

I saw those pictures a year or 2 ago right? White Bear Lake hasn't come up with all the snow melting?

yea, i took those in November 2009. Have not been out there since so I am not sure if it's any better or not.

Hot Carl · « **Reply #39 on:** April 28, 2011, 11:46:02 PM »

Alrighty so I figure it's time for an update...

Last weekend I got the starter solenoid and fuel/water separator mounted, charged the batteries and got her running! I'm VERY happy with the tips and the sound of the exhaust running on muffs, and think I'll be just as pleased with it in the water. The engine's runing good and smooth, I'm not leaking water or fuel = good times had by all.

So that's all good news...now the bad:

I've got an issue with the cooling system, more specifically, the starboard side of the exhaust. Running on muffs at idle, the engine starts to overheat if I let it run for 12-15 minutes. In one instance it approached 190 degrees at which time I shut it off (that's the hottest I let it get). If I bump up the RPM's to 2K for 30 seconds it's visually obvious the impeller is sucking up more water, and the temp will slowly drop. This all seems to suggest that my impeller is on the way out (it's over 2 years old) and I plan on changing it. But wait, there's more...

I've got a good amount of water coming out of both tips, but a heavier flow comes out of the port side. Also, the starboard riser is a bit hotter and a decent amount of steam comes out of the starboard side tip. By decent, I mean an unusually large amount of steam. Today I noticed that, after start up, it took at least one minute longer for water to start coming out of the starboard side exhaust. Again, I eventually got pretty good water flow through the starboard side, but that delay can't be good.

My question is could a failing impeller be the route cause of these symptoms?? I was thinking the starboard manifold or riser might also be plugged, but it seems I eventually get solid flow through the manifold/riser.

Two points of potential interest: the port side runs cool and never expells any kind of steam. The starboard side of the engine sits higher (by at least half an inch) vs the port side, so an insufficient supply of cooling water (compliments of the failing impeller) may inheritely travel to the port side(?)

I talked to Jeff and we both agreed that the impeller needs to be replaced...I'm just looking for any other thoughts in light of this excessive steam issue. Thanks again all