New boater needs help! Exhaust Bellows on Merc 470

[ratedphil]

How do I install this damn thing?

http://www.masonmarine.net/mercruis....html?osCsid=20dcde056f25cfb4eede55be23266f65

Someone please help. I just bout this boat used and was told I need to install the exaust elbow bellow. The rubber piece is way to big to fit in the area in needs to go, So I'm guessing I need to remove something to fit it in. I tried to loosen the 4 bolts on what looks like the exaust manifold, but a green liquid started to come out(coolant?) so I tightened it back up.

I'm not very handy with repairs but this was just suppose to be a rubber piece that slips over two openings and I was suppose to secure it with metal clamps.

Any help or advice would be great.

The boat has a 470 mercruiser.

 

[EddiePetty]

Re: New boater needs help! Exhaust Bellows on Merc 470

The easiest way is to remove the exhaust elbow...and yes, you will loose a small amount of engine coolant when removing the elbow. Be 100% certain you have all the correct gaskets and reinstall the blanking plate the right-way-'round.
Oh, and while the elbow and bellows are removed, examine the exhaust passage for foriegn objects...remmants of exhaust flappers.

 

[ratedphil]

Re: New boater needs help! Exhaust Bellows on Merc 470

Thank you for your help. Is it 100% guarantee that I will need a new gasket or is there any chance that I can reuse the gasket? If not, how can I tell what gasket I need?

In regards to the coolant, just so I don't scare myself. Will It spill enough coolant to where I will need to get some more?

 

[EddiePetty]

Re: New boater needs help! Exhaust Bellows on Merc 470

99.6% certain for new gaskets.
Not knowing your year nor whether you have the cast iron or aluminum manifold:
...start here for aluminum: http://www.marinepartsexpress.com/M...EXHAUST MANIFOLD-EXHAUST ELBOW (ALUMINUM).pdf

...and here for cast iron: http://www.marinepartsexpress.com/M...XHAUST MANIFOLD-EXHAUST ELBOW (CAST IRON).pdf

Set the trailer bow down to get the manifold parting flange above the coolant fill cap level to reduce the coolant loss.

 

[stonyloam]

Re: New boater needs help! Exhaust Bellows on Merc 470

If it looks like this: http://www.mercruiserparts.com/Show.../46.png&inbr=908&bnbr=230&bdesc=EXHAUST+ELBOW (newer model) you just need to loosen all 8 clamps and slide the pipe down enough to get the piece on, takes a little finagling, and sometimes the rubber sticks to the pipes a little, but should be able to work it on. BTW why did you have to replace it. If it was melted, you can be pretty sure that your exhaust shutter (#6) is shot too, better take a look while you are at it. Good luck.