Sierra manifolds and risers install 7.4mpi / bravo1

jmarines

Petty Officer 2nd Class
Joined
May 8, 2015
Messages
148
Well I decided to go ahead and change out the manifolds and risers out of my 7.4. The last owner stated he never changed it out and he'd owned it for the past 9 years. I went ahead and used sierra due to the feed back I received from a local shop. . There going to get replaced in a few years anyway so I figured why not test them out. At first glance I was surprised at how sturdy they feel. Weight wise... about the same. I did have to scrap off the paint on the mounting surfaces..
.that was already expected though. The job is pretty straight forward .. but a little cramped. I've finished one side and now I'm working on the other. I am having issues with 2 bolts that are.covered with rust on the manifold..
But hopefully a little Heat will break it up this afternoon.
 

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jmarines

Petty Officer 2nd Class
Joined
May 8, 2015
Messages
148
This is my first set to see up close so I'm learning as I go. The previous owner said the last 9 yrs it has been used on the Gulf of mexico.. not very often though and was supposedly flushed after every use.
 

jmarines

Petty Officer 2nd Class
Joined
May 8, 2015
Messages
148
No Title

I am finally able to report that the new manifolds and elbows are now installed. Took longer than I anticipated but it was all worth it . I had to call a moble mechanic to help with the 2 bolts that didn't want to come out. I'm glad I did... he not only took them out but also helped me put everything back together. He did say that these parts along with the gaskets looked original. I'm excited to be able to take it out on the water this coming weekend.
 

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Rick Stephens

Admiral
Joined
Aug 13, 2013
Messages
6,118
Nice. Hard to tell the difference in wall thickness and design from one to the other. Great report. Thanks!
 
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