Kinda urgent help needed with exhaust shutters...

[JASinIL2006]

Hi all, I'm in the process of replacing my shutters after running the engine without water to the muffs. (Details leading up to the need for replacement here: https://forums.iboats.com/threads/need-to-check-shutters…-any-tips.767319/#post-5866978)

Anyway, I ordered replacement shutters that supposedly were correct for my engine (serial number for Mercruiser 350 Mag: #0F747565). All the sites I consulted said part 807166A1 was correct for my engine.

While trying to replace the shutters tonight, I noticed the old shutters are larger than the new ones; the hinge on the new shutters is 3" while the old shutters have a 3 1/2" hinge.

I'm a bit worried because we're supposed to take the boat on a 2 week vacation leaving Saturday and if I can't get the correct shutters - and install them - by Thursday or Friday, we're not boating.

Can anyone help with a correct part number and maybe a place with super-fast shipping? The old shutters are on the left in the pic below. Thanks for your help?

 

[dubs283]

60930 ought to be the correct part for your application

 

[2004 searay]

the serial # does not come up on search.
confirm and reply.
also what year and fuel system?

 

[Scott06]

Hi all, I'm in the process of replacing my shutters after running the engine without water to the muffs. (Details leading up to the need for replacement here: https://forums.iboats.com/threads/need-to-check-shutters…-any-tips.767319/#post-5866978)

Anyway, I ordered replacement shutters that supposedly were correct for my engine (serial number for Mercruiser 350 Mag: #0F747565). All the sites I consulted said part 807166A1 was correct for my engine.

While trying to replace the shutters tonight, I noticed the old shutters are larger than the new ones; the hinge on the new shutters is 3" while the old shutters have a 3 1/2" hinge.

I'm a bit worried because we're supposed to take the boat on a 2 week vacation leaving Saturday and if I can't get the correct shutters - and install them - by Thursday or Friday, we're not boating.

Can anyone help with a correct part number and maybe a place with super-fast shipping? The old shutters are on the left in the pic below. Thanks for your help?

View attachment 384848

Im coming up with same part number too …https://www.marineengine.com/parts/...v8-1996/0f601000-thru-0k001526/exhaust-system

even if you dont get them id think you are using the boat Or at least put the old one back in. On my old boat i replaced them after 20 plus years. It was obvious they had not been in working shape for years and never had an issue. Personally between that and volvo penta not using them im skeptical of if u really need them

 

[JASinIL2006]

the serial # does not come up on search.
confirm and reply.
also what year and fuel system?

It's a Mercruiser reman 350 Mag. It looks like there is another version of shutters: #807166A2. It matches the dimensions of the shutters I removed.

It looks like no one has Quicksilver shutters in that model that I can get soon enough. I've ordered some aftermarket shutters and I guess they'll have to do. I hate ordering non-Merc parts for something that is such a pain-in-the-a$$ to change, but I don't really have a choice...

 

[JASinIL2006]

Im coming up with same part number too …https://www.marineengine.com/parts/...v8-1996/0f601000-thru-0k001526/exhaust-system

even if you dont get them id think you are using the boat Or at least put the old one back in. On my old boat i replaced them after 20 plus years. It was obvious they had not been in working shape for years and never had an issue. Personally between that and volvo penta not using them im skeptical of if u really need them

Yeah, that's what I ordered and that's what doesn't fit. Thanks, Mercruiser, for your @#*&%$ parts system...

I've read of too many folks hydrolocking their engines to want to use the boat without working shutters. I'll just install some aftermarket shutters and hope for the best...

 

[Scott06]

Yeah, that's what I ordered and that's what doesn't fit. Thanks, Mercruiser, for your @#*&%$ parts system...

I've read of too many folks hydrolocking their engines to want to use the boat without working shutters. I'll just install some aftermarket shutters and hope for the best...

The reman engines are harder to find serials for . There was a similar situation on here a couple months back i think maybe fun times figured out how to get the reman engine parts to come up

this is a reman 5.7 parts breakdown that the 807166A2 shutters

https://www.marineengine.com/parts/...gen-repower-plus-gm-350-v8/all/exhaust-system

how many of those hydrolocks u read about are from shutters? many other reason for hydrolock but if you really needed them VP would have a huge hydrolock issue after they stopped using them …

 

[2004 searay]

Amazon.com

 

[JASinIL2006]

Amazon.com

Thanks, I saw those, too, but ordering one of them might get here in time (actually, now it says Saturday delivery which is too late). Ordering two of them changes the delivery date to sometime next week. Must not have more than one of them in stock...

 

[Fun Times]

I'd have to think you ought to have a Merc dealer somewhat near by you that should have some in stock... https://www.mercurymarine.com/en/ca/find-a-dealer/

But honestly in this case, aftermarket might just be a better choice to go with...Did I just say that.

Here's a place that helps explains and shows the measurements for all the Merc water shutters, http://www.mercstuff.com/watershutters.htm

 

[stresspoint]

if push comes to shove , run without them or try as best you can to service the old one's and get them working .
if you have to run without them , avoid sudden slow downs with heavy people in the rear of the boat .

FWIW , when i pulled the old ones from my 4.3 they looked like they had been stuck open since day dot.

 

[JASinIL2006]

So... I thought I was supposed to get my new aftermarket shutters yesterday, but it looks like USPS has done it again and lost the package... why did it have to be shipped it via USPS?

Anyway, it looks like my options are to run the boat without shutters or install the old ones, which at least looked like they might be somewhat functional at stopping massive water infiltration via the Y-pipe. I really don't want to have to do this job again, but I don't think I have any option beyond re-installing the old shutters. I don't like the idea of running without any shutters at all.

I hate the idea of having done all this for nothing, but I either put this thing back together or we don't have a boat for vacation. This really sucks.