Strippers....

[seefishydotcom]

Before you guys get worked up...this is a work safe post.

MY 3 EXHAUST MANIFOLD BOLTS KEEP STRIPPING!

I am referring to the ones that hold the pipe to the manifold. I tapped them to 5/16 24 and (2) of them seem to be holding but the rear one keeps stripping. I replaced them with grade 5 bolts and am praying they will hold.


Oh lords of all that is seadoo please bestow your wisdom upon me.

Someone told me I should not use high-temp gasket maker with the gasket that came in the rebuild kit. Any thoughts?

 

[Dennis]

Are they stripping or breaking?

DAWG

 

[seefishydotcom]

The threads are stripping in the top of the exhaust manifold.

 

[parrothd]

Replace the rubber exhaust bushings, and check the drive shaft, prop and wearing are all in good condition, anyone one of these can cause excessive vibration = broken/stripped bolts...

 

[pincusa]

First, put a helicoil in. Tapping threads into the soft Al isn't going to hold much force.

But that part shouldn't have a lot of force on it. I suspect something is wrong. Motor mounts maybe are gone and the engine is moving. Grab the engine and really push on it to see if it moves - it shouldn't

 

[seefishydotcom]

Motor mounts were replaced last month when I had the engine rebuilt. I know the alum is soft and I tapped it very well. They seem to be holding for now.

I'm sure I am not the only person with this problem.

 

[parrothd]

It's a common issue...Check the things I mentioned I know you didn't...