Y pipe compatability

[newtoboat101]

I have gimbal housing stamp number 42259, inner transom plate is stamp number 441160 and have too replace my y pipe stamp number 44265-C, will y pipe 815786-c fit my application

 

[harringtondav]

https://picclick.com/Mercruiser-Exhaust-y-pipe-44265-C1-44266T-1-807130A-tube-302501255322.html Based on this, the answer is yes. Google your 44265-C. eBay appears to have plenty <$200

 

[newtoboat101]

https://baltimore.craigslist.org/bpo/d/mercruiser-bravo-exhaust-pipe/6669153365.html this is what I am looking at. do ya think its a replacement for my application from what I read on nlamarine it will work even though my setup is 3 bolt hold alignment

 

[harringtondav]

Sorry newtoboat101 . Can't help you here. I just chased your p/n's and came up with my reply. 3 bolt vs. 4 bolt? There are far better sages on this forum than me. Wait for one of them to reply. Good luck.

 

[newtoboat101]

https://www.nlamarine.com/products/...-4-3l-5-0l-5-7l-alpha-one?variant=18592037957 as per this it will work what to think

 

[achris]

I have gimbal housing stamp number 42259, inner transom plate is stamp number 441160 and have too replace my y pipe stamp number 44265-C, will y pipe 815786-c fit my application

Model, year and serial number of what you're working on wouldn't go astray.

Chris..........

 

[newtoboat101]

I own 1988 Thompson 240 with 1988 5.0lx 4 barrel carb with alpha 1 gen 1 transom and thru prop exhaust with 4 inch pipes

 

[achris]

I own 1988 Thompson 240 with 1988 5.0lx 4 barrel carb with alpha 1 gen 1 transom and thru prop exhaust with 4 inch pipes

Thanks.

The numbers stamped/cast into parts are just the casting number, and often bare little or no relevance to actual part numbers used in the spare parts system. Without the spare part number, it's difficult to compare apples with oranges...

Now, given 1988 5.0LX, the spare parts part number for the exhaust pipe is -44266T1, which supersedes to 8M0115149. The closest I can get to anything with 815786 is -8157861, which is NLA (No Longer Available), and I have failed to find anywhere it's used. So the answer is, 'I have :noidea:' The only way you could find out it to ask whoever is selling it to identify what it's come off.

Chris............

 

[alldodge]

Would yours happen to look like this?
Its from manual 2

 

[newtoboat101]

[No message]

 

[newtoboat101]

no not like pics will post pics shortly ,I have it off the boat ,so im thinking of going out take

 

[newtoboat101]

this is old gimbal housing but you can see bolt pattern

 

[newtoboat101]

just got back home ,here's my recent pictures,this is what I currently have ,if you read the description on the nlamarine website for 815786 y pipe is says it would fit 44266 y pipe my current pipe is 4 inch 44265-c so one has to assume that it should be a match ,correct

 

[newtoboat101]

I want to make it clear ,I have not gone to see the y pipe 815786,these are pics of y pipe I need to replace

 

[alldodge]

Your old pipe which is the newer design only used 3 bolts to hold in place. So the newer pipe you found should fit. You can measure or take the old pipe with to match up to the one your looking at

 

[newtoboat101]

went and matched up perfect ,nice piece for 75 bucks,the gentleman said he bought for 200 ,as a mistake he has pre alpha ,so I think I got a steal here today

 

[achris]

... pre alpha ...

https://forums.iboats.com/forum/eng...utdrives/10596184-what-is-a-‘pre-alpha’-drive

 

[Bondo]

Ayuh,..... Does anybody know when the bolt pattern changed from the 4 bolt off-set, to the 4 bolt symmetrical pattern,..??

 

[achris]

Ayuh,..... Does anybody know when the bolt pattern changed from the 4 bolt off-set, to the 4 bolt symmetrical pattern,..??

The advent of the 1-R series, 1983.

Chris.........