when to change maifolds/risers??

[stephanies]

My 5.7GXI is coming up to 5 years old/ 200 hrs.

It lives in very salty south florida on a lift where it sits unused for 3 months inbetween our visits. It is always flushed through after use and before being left sitting.

Do i just change the manifolds/risers now? Or take them off and inspect them? Or change them at 6 years? I have never kept a boat longer than 5 years before so unsure what i should do.......

Thanks for any advice!

 

[tpenfield]

Re: when to change maifolds/risers??

I would inspect at 5 years and then every 2-3 years, depending on how the mating surfaces of manifold and riser look after the initial inspection.

replace when you are loosing a fair amount of mating surface to the rust scaling off, etc.

 

[Scott Danforth]

Re: when to change maifolds/risers??

generally you would remove the risers and inspect the joint between the riser and manifold.

Since you are flushing that should prolong the life of the manifolds and risers.