Author Topic: CVX 18 THRU HULL EXHAUST  (Read 57096 times)

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Offline Grinder

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CVX 18 THRU HULL EXHAUST
« on: March 22, 2011, 07:00:34 PM »
Well I have most of my parts so I am starting to pull the motor. I just received the exhaust manifolds (dry joint) and they came with new restrictor gaskets, so my question is the new gaskets are restrictors sould I get the gaskets that are free-flowing or are these gaskets OK?

Craig did you use the restrictor type gasket?
Shaun
86 CVX 18

Offline Shrom CVX-18

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Re: CVX 18 THRU HULL EXHAUST
« Reply #1 on: March 22, 2011, 08:00:13 PM »
I used free flowing gaskets. That is what came off mine when I took them apart to clean. Good luck with your project ;D I am sure it will go smoothly for you. The hardest part was drilling out the holes for the tips. and even that didn't take long. If I didn't do all the extra cleaning and had all the parts before I started this project could have easily been done in one weekend. 

If you have any questions or just want idea's I think i gave you my number, feel free to give me a call...oh also I plan to get the outdrive on in the next couple weeks and back the boat in the water to test weather using the old t-stat will be ok as far as temp goes. I will keep you posted,
79 CVX-18 "Lowrider"

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #2 on: March 22, 2011, 08:04:44 PM »
Here are some pics of the parts. The manifolds look almost new! And everthing else is new.





Shaun
86 CVX 18

GT150 JEFF

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Re: CVX 18 THRU HULL EXHAUST
« Reply #3 on: March 22, 2011, 09:02:45 PM »
Lookin good Shaun.

On the bottom of the manifold I would use the elbos that have a drain in them.  As when I took my hoses off to do the thru hull they  still had plenty of water left in the hoses.  I just have brass drains in my manifolds.  You should be well on your way now. Good luck Jeff

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #4 on: March 22, 2011, 09:21:23 PM »
Thanks Craig and Jeff.

Jeff, I actually already ordered 4 of those brass 90's with the drain.



Shaun
86 CVX 18

Offline Shrom CVX-18

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Re: CVX 18 THRU HULL EXHAUST
« Reply #5 on: March 23, 2011, 07:13:17 PM »
You say you ordered four. You planning on doing the same thing I did with my manifolds with the plumbing?  I probably should have bought the elbows with the drains in them but didn't. I wasn't sure if there would be enough room between the bottom of the manifold and the power steering cooler. I figured I would just take off the hoses when draining everything.

Oh just a tip..make sure you put those elbows on before you put the engine back in the boat, otherwise its kinda a pain because of space.
79 CVX-18 "Lowrider"

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #6 on: March 23, 2011, 09:38:23 PM »
Thanks for the tip. Ya I ordered 4 not quite sure how I am going to plumb it yet. I just want the parts here so I can get it done without having to wait for more parts! And you never know if I break one I have some spares. If nothing else Jeff could maybe use a set?
Shaun
86 CVX 18

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #7 on: March 24, 2011, 03:24:12 PM »
Jeff, Craig

What sealant did you use ,if any, to seal your block off plate?

What sealant did you use for outside on the tips. And inside tips, same stuff?
Shaun
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Re: CVX 18 THRU HULL EXHAUST
« Reply #8 on: March 24, 2011, 03:37:12 PM »
Shaun

I used 3M 5200 sealant to seal off every thing.

Said it was for thru hull fittings, Hope I do not have to take it apart said it was a not to come apart again.

Purchased it at Home Depot it a caulking tube.

Jeff

Offline Shrom CVX-18

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Re: CVX 18 THRU HULL EXHAUST
« Reply #9 on: March 24, 2011, 07:19:55 PM »
Shaun

I used 3M 5200 sealant to seal off every thing.

Said it was for thru hull fittings, Hope I do not have to take it apart said it was a not to come apart again.

Purchased it at Home Depot it a caulking tube.

Jeff

 That would be the same stuff I used, I ordered mine online, I did not realize you could get it at home depot...That stuff seems to work great. I did not put it on sparingly, :D I wanted to make sure it sealed. I cleaned the excess that squeezed out as soon as possible. That stuff is sticky, and messy lol I did also put the same stuff on the block off plate. Once again I put enough on so that when I tightened the bolts the sealant squeezed out...might not be necessary, but made me feel better seeing that I definitely had enough sealant. ;D
« Last Edit: March 24, 2011, 07:26:12 PM by Shrom CVX-18 »
79 CVX-18 "Lowrider"

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #10 on: March 24, 2011, 09:30:13 PM »
Well I got alot of work done tonight. I pulled the motor after about an hour of fighting one of the rear mount bolts, and found that the bolt didn't have a nut on it was just rusted in there. So I got the motor out, took the old manifolds off and put the new manifolds on (what a pita by myself) but got them bolted on. Then I fought with the Y pipe till I realized there was a 5th bolt in the middle, after I took that bolt out it fell right off. Then I put the motor back in and started installing the S pipes and getting those to fit right. I noticed the transom might need some work not sure I will take a couple of 4" core samples on saturday.  ;D

Here are a few pics

Pulling the motor


New manifolds installed


« Last Edit: March 24, 2011, 09:33:02 PM by Grinder »
Shaun
86 CVX 18

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #11 on: March 24, 2011, 09:45:29 PM »
More pics





Shaun
86 CVX 18

Offline OleRed

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Re: CVX 18 THRU HULL EXHAUST
« Reply #12 on: March 25, 2011, 01:01:26 AM »
Ooooh .. that baby is gonna sound Good. 
1980 23ft Scimitar

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #13 on: March 25, 2011, 08:19:22 AM »
Ooooh .. that baby is gonna sound Good. 

It's not going to sound as good as that stroker, but it should sound pretty good.
Shaun
86 CVX 18

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #14 on: March 25, 2011, 08:22:35 AM »
Alex,

Did you get all your parts for your project? When were you going to start on the exhaust?
Shaun
86 CVX 18

Offline Hot Carl

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Re: CVX 18 THRU HULL EXHAUST
« Reply #15 on: March 25, 2011, 08:32:17 AM »
Great work man....keep it up!

I'm still waiting on the tips, but should be getting them soon. I've got everything else ready...oh except for my boat, which is still buried in a pole barn. Pretty sure I'll need that to start the exhaust  ;D I'm probably a week or so out from grabbing the boat....so hopefully the project will start soon after.

I hope your transom isn't too bad! At least where you're drilling  8)


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1980 CV23

Offline Shrom CVX-18

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Re: CVX 18 THRU HULL EXHAUST
« Reply #16 on: March 25, 2011, 11:17:35 AM »
Alex, you better get at that! Boating weather is almost here.(in pa) not sure  what weather is like where you are at.
Grinder, looking great! Those tips are just like mine but seem to be a few Inches longer. They have internal flappers i them?
79 CVX-18 "Lowrider"

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #17 on: March 25, 2011, 11:43:16 AM »
Grinder, looking great! Those tips are just like mine but seem to be a few Inches longer. They have internal flappers i them?

Ya they have the rubber internal flaps.
Shaun
86 CVX 18

Offline Hot Carl

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Re: CVX 18 THRU HULL EXHAUST
« Reply #18 on: March 25, 2011, 12:15:08 PM »
Alex, you better get at that! Boating weather is almost here.(in pa) not sure  what weather is like where you are at.

Well, looking at the fresh coat of snow we just got I'd say the 2011 boating season is already a lost cause...I'll just prep for 2012  ;D

Seriously man I can't wait to get this started...

Shaun - are you going to plumb the cooling hoses like Craig did?
My name is not "Carl"

1980 CV23

Offline Grinder

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Re: CVX 18 THRU HULL EXHAUST
« Reply #19 on: March 25, 2011, 12:32:05 PM »
Shaun - are you going to plumb the cooling hoses like Craig did?

I think so, but still not quite sure.  ???
Shaun
86 CVX 18