Exhaust Manifold drain chipped

Matt Winans

Matt Winans

New Member
Sep 22, 2020
16
Boat Info
1976 Sea Ray 200
Engines
Mercruiser 888. 188 HP.
Hello Folks,
I need some help or ideas.
I bought a 1976 SRV 200 and I am winterizing it for the first time.
I pulled the exhaust manifold plug to drain and when I went to put plug back in it was not threading hand tight.
Upon closer inspection I see that the plug opening is chipped. I have no idea what they must have used to seal it before and it makes me wonder bif this boat must have been stored in heated storage in the winters.
Any ideas short of trying to find a replacement manifold ?
Thanks,
Matt
 
Is it just a chip or are these old manifolds that need replacing anyways. Hard to tell what you've got going on without more info or pics.
 
417A438E-0EDA-4FB6-8A92-F73A94DBAD5A.jpeg
scoflaw said:
Is it just a chip or are these old manifolds that need replacing anyways. Hard to tell what you've got going on without more info or pics.
Click to expand...

It’s a chip. I took a photo but it’s not the greatest. Kind blurry and I have covered the boat up for the night.
The drain is in the center of the photo.
 
Your right the pic sucks, but anyways. your not offering up any info about the aGE, CONDITION OF THE MANI'S Sorry for he caps
 
scoflaw said:
Your right the pic sucks, but anyways. your not offering up any info about the aGE, CONDITION OF THE MANI'S Sorry for he caps
Click to expand...

The boat is a 1976. That’s all I got.
And if you can’t see see the chip from that photo then thanks for your time and good day sir.
 
You want to drain the manifold on the bottom. The lowest point. It looks like your camera angle is looking down at the motor mount. Does the raw water hose enter at the bottom? It usually has a drain plug on that fitting or you can just remove the hose to drain it. The fittings are usually tapered pipe thread. Maybe you could carefully retap it to seat the plug slightly deeper? Grease on the tap will trap most of the cuttings. Liquid teflon on the plug to reseal it.
 
Thornton69 said:
You want to drain the manifold on the bottom. The lowest point. It looks like your camera angle is looking down at the motor mount. Does the raw water hose enter at the bottom? It usually has a drain plug on that fitting or you can just remove the hose to drain it. The fittings are usually tapered pipe thread. Maybe you could carefully retap it to seat the plug slightly deeper? Grease on the tap will trap most of the cuttings. Liquid teflon on the plug to reseal it.
Click to expand...

Thornton
Yes I was thinking about trying to tap it.
Or maybe have someone try to form the collar again by welding it and then tapping that. The other side was fine. But oddly enough was a smaller size. Is that normal ? Maybe that last owner tapped this side and used a larger plug ? I have to remove the jump seat frames and I’ll be able to reach the block plugs tomorrow. I’ll be able to get a better view of my issue then. Looking closer at the plug I saw what might be the liquid Teflon you mention. I’ll look at the hoses tomorrow. lol f I can drain that manifold that way I thought of maybe using hi temp JB. Plug will be in place for good. Or until I replace the manifold. Thanks for the grease on tap trick. I’ll remember that. I’ve got at least 3 weeks yet till freeze up. I’ll surely have a fix before then. Kinda weird that it even cracked and broke anyway. Makes me wonder what someone did to cause that damage.
Thank you for sharing your time and your helpful thoughts.
Matt.
 
Matt Winans said:
The boat is a 1976. That’s all I got.
And if you can’t see see the chip from that photo then thanks for your time and good day sir.
Click to expand...

Hey Matt, CSR is a great place with a wealth of collective knowledge from boaters that want to help boaters, we all needed it at one time or another. Lets get back on topic. Although the pic is tough, do I see brass or bronze?
 
techmitch said:
Lets get back on topic. Although the pic is tough, do I see brass or bronze?
Click to expand...

I was thinking the same thing. It looks like a non ferrous metal fitting that is broken. If that’s the case you might not have too difficult a fix.

Do you think you could get better pics? There’s lots of people here willing to help and tons of collective knowledge.

The only times I’ve seen this crew fail at helping a new member with a problem is when that member isn’t patient enough to participate in the solution.

Welcome aboard.
 
Soulshine said:
I was thinking the same thing. It looks like a non ferrous metal fitting that is broken. If that’s the case you might not have too difficult a fix.

Do you think you could get better pics? There’s lots of people here willing to help and tons of collective knowledge.

The only times I’ve seen this crew fail at helping a new member with a problem is when that member isn’t patient enough to participate in the solution.

Welcome aboard.
Click to expand...
Hello Soulshine
Its been raining steady here in Michigan with more on the way... I'll try to get a better photo between drops.
 
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