What the Y pipe is going on?

[Watermann]

Ever have one of those days when you see something isn't right when your putting it back together? Yeah here's one of those...





Factory match, don't think I like it when it comes to sealing anything up with 3 bolts when you see 4 holes.

 

[Bt Doctur]

Re: What the Y pipe is going on?

Yep, that's how its done now, you rotted your Y pipe and that's the new replacement. guessing from the late 80`s ish.

 

[Watermann]

Re: What the Y pipe is going on?

Yeap 1988... that is correct.

 

[Watermann]

Re: What the Y pipe is going on?

So would it help out with the install sealing up to add some non-hardening gasket maker to the flange?

 

[Bt Doctur]

Re: What the Y pipe is going on?

No , the standard merc product or some Perma-Tex aviation sealant is all it needs. Doing that same job in about a week. But in my case one of the SS bolts was seized and broke the head off. Had to remove the transom housing to get the broken piece out.

 

[Watermann]

Re: What the Y pipe is going on?

Thanks for the info Doc! Had that happen to me on a 2.5 L, the bolt head snapped off, not a fun job at all. Would using some anti-seize compound be a good idea then on these bolts or would that mess up the torque reading?

 

[Bt Doctur]

Re: What the Y pipe is going on?

you really don't what them to start loosening up with anti-sieze

 

[pyrotek]

Re: What the Y pipe is going on?

Use an impact gun. Thought I was going to break mine as well, then I got the impact gun and within a few back and fourths they came right out

 

[Fishermark]

Re: What the Y pipe is going on?

I went through this about ten years ago. Even asked Mercruiser. They said it was okay with only using three bolts. Here's the old post where I asked the same question.

 

[Watermann]

Re: What the Y pipe is going on?

Thanks for the reply and the rock solid info! I wish the search feature was easier to find posts like this in the forum. I give up after a couple pages of non-related info.

Almost forgot to ask, did you used any sealant besides the O ring?