Exhaust plumbing parts,#s, got wrong ones

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

what is messing me up is in the parts listing their calling the risers 7 degree elbows and 15 degree elbows. i figured out they meant the risers are 7 & or 15 degrees. It'ds getting clearer The 94444 elbows are a 4" upper to risers and 3" lower to (it lists two)99877A9 or 99877A10 y-pipe but it has a 4-3" upper bellows to go to the 3" 15* riser. Now, the other set up for these years 82-86 is for the 7* 4" risers The y-pipe is 807130a4 with port elbow 11086t and stb elbow 14343t upper bellows 32-44348001 and lower bellows 32-14358001, sheeew!!! I need to figure out if my 4" risers are for sure 7* and what Y-pipe i have now. I'll be back!

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Your exactly right Achris, I have the 3" y-pipe with the newer 4" -7* risers.

 

[achris]

Re: Exhaust plumbing parts,#s, got wrong ones

Now you have me confused with your terminology...

Exhaust manifold -> bolts to the head and collects exhaust gases.
Exhaust elbow(1) -> bolts to manifold, has a water jacket and mixes water with the exhaust gases as they exit.
Exhaust elbow(2) -> almost 90* bent aluminium tube that is between the end of elbow(1) and top of Y-pipe.
Exhaust riser -> spacer that can be fitted between the manifold and the elbow to increase the elbow(1) height for boats that sit low in the water. Comes in 3" and 6".
Exhaust bellows(1) -> corrugated rubber tube that connects gimbal housing to bell housing,
Exhaust bellows(2) -> Rubber tube that connects elbow(1) to elbow(2).
Exhaust tube -> rubber tube that connects elbow(2) to top of Y-pipe.

So exhaust gas flow goes... head -> manifold -> (riser, if fitted) -> elbow(1) -> bellows(2) -> elbow(2) -> tube -> Y-pipe -> bellows(1) -> drive -> ocean.....

This is the terminology Merc use (except the numbers in parenthesis )... and it will help us to understand what each of us is referring to....
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So... Where does this leave us? Can you list what parts you have?

We know you have 7* 4" elbow(1)

Which model Y-pipe? (all 3" pipes are NLA, the 4" pipe is on special at www.mercruiserparts.com for $350. That is a great price!)

which bellows(2)? (for 4", 32-44348001)

which elbow(2)? (for the 4" system, all still current , -11086T for the port, -14343T for starboard)

which tube? (for 4", 32-14358001)
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Once we have that list we can figure out the easiest way to get this lot hobbled together....

Hope you're as confused as I am now...

Chris....
(Sorry for the long post, I just don't want to miss anything...)

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Your exactly right Achris, I have the 3" y-pipe with the newer 4" -7* risers. Not sure the 44266T has the correct bolt pattern to my gimble. I have the offset 4 holes not the uniform 2 on top and 2 on bottom. Trying to find it now.

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Chris if you look at this page it lists 2 y-pipes look at #s 7 and 7a it says reference 4 and 4a ? i'm lost at the reference part.http://www.mercruiserparts.com/Show...1077&bnbr=290&bdesc=EXHAUST+SYSTEM+(M0056-F8)

 

[achris]

Re: Exhaust plumbing parts,#s, got wrong ones

Chris if you look at this page it lists 2 y-pipes look at #s 7 and 7a it says reference 4 and 4a ? i'm lost at the reference part.

Easy to sort that one... Are the 2 elbow(2) the same? If they are, then the Y-pipe is #7. If the elbow(2) are different, then Y-pipe is #7A

Elbow(2) will have casting numbers on them. STDB will have #94443 and PORT will have either #94443 or #94444 on it.

Chris........

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Ok got what it means early and late. Late had a port and stb. elbow. I have the later 3" Y-pipe 99877A9

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Yeah i looked at my the elbows that came with this y pipe on my friends boat, as i sold them to him last summer. different #s i have pipe 7a. He has my old risers to and their the 15* 3".

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

those elbows are 3"-4" then the bellows is 4" back to 3" at the risers. Not sure if i can just use those same elbows and a 4-4" bellows to the riser or will the angles screw it up?

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Crap! motors all in aligned and i'm going to have to change the y-pipe now huh? GRRRRRRR!

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

UPDATE! The 4" Y-pipe # 807130A4 Is the wrong bolt pattern for my gimble!!! Here it is, it has the uniform bolt pattern unlike mine. http://shipwrecksalvage.net/cart/index.php?main_page=product_info&products_id=432

 

[achris]

Re: Exhaust plumbing parts,#s, got wrong ones

Crap! motors all in aligned and i'm going to have to change the y-pipe now huh? GRRRRRRR!

Ok... You have to stick with the existing Y-pipe... (not a lot of choice, due to the bolt pattern), that saves you from pulling the engine.

Let's look at the actual differences. The reason for the change from the early model to the late model was a change in the angle of the port section of the Y-pipe. Since both elbows(2) on the early model are the same, and the heads on the engine are slightly offset, then the port side of the Y-pipe must be further back than the stdb side. The late model Y-pipe has both sides coming up at the same distance form the transom, and to compensate for the different locations of the elbow(1) then elbow(20 for the port side allows the systems to line up....

Follow?

those elbows are 3"-4" then the bellows is 4" back to 3" at the risers. Not sure if i can just use those same elbows and a 4-4" bellows to the riser or will the angles screw it up?

What is it you are referring to as 'riser'? It's here you're losing me...

Ok... what you have: 7* 4" elbow(1), Which bellows(2)?, elbow(2) #94443 & #94444, tube, later style Y-pipe...

Have I got that right?

Chris............
(read my post on terminology)

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

I'm calling the risers the Elbows on top of the manifolds and the elbows are the elbows between the rubber bellows. I have the later style 3" Y-pipe 99877A9 and the 7* 4" risers(elbows) I need everything in between_ two bellows and an elbow or 2 elbows and 2 upper bellows and two lower bellows port stb. Why is that wrong bolt pattern Y-pipe for later models listed in 82-86? That frigged me up! We can forget that beast. I'm not pulling my gimble engine and y-pipe!!! lol OH! and i have the wrong elbows i bought from ebay the elbows between the bellows- 4" 11086T Port and 14343T STB.

 

[achris]

Re: Exhaust plumbing parts,#s, got wrong ones

I'm calling the risers the Elbows on top of the manifolds and the elbows are the elbows between the rubber bellows. I have the later style 3" Y-pipe 99877A9 and the 7* 4" risers(elbows) I need everything in between_ two bellows and an elbow or 2 elbows and 2 upper bellows and two lower bellows port stb. Why is that wrong bolt pattern Y-pipe for later models listed in 82-86? That frigged me up! We can forget that beast. I'm not pulling my gimble engine and y-pipe!!! lol OH! and i have the wrong elbows i bought from ebay the elbows between the bellows- 4" 11086T Port and 14343T STB.

Ok... so, What is the diameter of the opening at the top of the Y-pipe? I'll go and measure mine (late model 4") and we can then see it using all 4" hardware will work...

The elbows(2) you bought off eBay may be right after all. They are the right ones to use with the elbows(1) (you call 'riser') you have.

Chris.......

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

I have the 99877A9 3" Y-Pipe. Thats why i asked awhile back about turning the 3-4" bellow around and going 4-3" into the Y ?

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

The upper bellows on the 3" 15* risers(elbows) is a 3" at the risers and 4" at the elbow #70981A3. Since i have the 4" Risers (elbows) can i use the 3-4" bellows on the bottom end at the Y? http://www.mercruiserparts.com/Show...1077&bnbr=290&bdesc=EXHAUST+SYSTEM+(M0056-F8) This pic Or will the 7* and the 15* risers(elbows through it off?

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Go with the 4" risers-upper bellows-4"elbows and use the 3-4 bellows on the Y 4" on elbow and 3" end on the y? See attached

 

[achris]

Re: Exhaust plumbing parts,#s, got wrong ones

Go with the 4" risers-upper bellows-4"elbows and use the 3-4 bellows on the Y 4" on elbow and 3" end on the y? See attached

That could work... Just check that they don't get hot....

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

Right, Also i'm wondering about getting them to line up? I guess it's the 4" system until you get to the y-pipe and using a bellows reducer. Thanks Chris it's 3 am here gotta get some shut eye. Appreciate the extra mind working with me. Take care. TTYL!

 

[starsnstripers]

Re: Exhaust plumbing parts,#s, got wrong ones

OK Here's the deal. I grabbed my old elbows off my friends boat to day and tryed them on my risers. They are what i need, the only thing i'll have to alter is the bottom bellows which will be straight 3" will need to be longer so i'll use 3" exhaust tube. The STB side of my Y-pipe is closer to the engine than the port but the later model elbows are made accordingly 94444 port and 94443 Stb. so even though i have the 7* 4" risers(elbows) it just makes the elbows a little short but they will alighn. Thanks for your help Achris atleast i know wat i need now.--- (2) upper bellows 4" 32-44348001, port elbow94444 4"-3", Stb. elbow 94443 4"-3", and (2) roughly 7-8" 3" exhaust hose for lower bellows. Whaalaa! Glad thats done! sheeeew!