Boats For Sale:
PCM 351 exhaust manifolds |
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KTempleton 
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Joined: September-04-2013 Location: Houston, TX Status: Offline Points: 48 |
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 Topic: PCM 351 exhaust manifoldsPosted: March-28-2014 at 2:33am |
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Was prepping mine for paint after replacing gaskets and found some surface cracks in them. Not really something I would ever consider used. But this boat hasn't seen the water in a while and trying to avoid putting a lot of money in it until I know the motor is strong. Plan on getting new ones once I know it's not going top blow once it's under load
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: March-30-2014 at 12:02am |
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Kyle,
Pressure test the ones you have. |
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Dreaming
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Joined: May-21-2010 Location: Tacoma, WA Status: Offline Points: 1870 |
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Posted: March-30-2014 at 1:32am |
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Kyle, I was in the same boat last year with my manifolds... Alpha don had some for sale, but by the time we connected via pm, I had found another set. I'll pm you his email address.
Good luck! |
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KTempleton
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Joined: September-04-2013 Location: Houston, TX Status: Offline Points: 48 |
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Posted: March-30-2014 at 7:21pm |
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Yeah They were just surface cracks that I did some grinding and filling on. but after all that work I put back on and went to screw in the new drain caps and the threads are completely gone.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: March-30-2014 at 7:25pm |
Did you try to chase the threads? |
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matt05sv211
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Joined: May-07-2014 Location: Atlanta Status: Offline Points: 17 |
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Posted: May-07-2014 at 8:53pm |
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Let me know if you are still looking for a pair of manifolds. I have a lot of extra parts from an engine swap I just did in my 2005 sv211. Excalibur 330 motor by PCM.
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repip_piper
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Joined: July-26-2010 Location: Marietta, GA Status: Offline Points: 27 |
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Posted: June-20-2014 at 12:21pm |
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Hi All,
I am looking for the driver's side exhaust manifold for my 89' SN with a 351W. I have what looks like what could be a crack. How do you seal it up to do a pressure test? Thanks, Vern |
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ArtCozier
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Joined: April-25-2012 Location: Orlando FL Status: Offline Points: 1023 |
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Posted: June-20-2014 at 12:40pm |
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There isn't a good way to pressure test them without taking them apart and making a blank plate to block off the water passages, and then that doesn't test the risers.
One way that will tell you if you have a big internal leak is, with the risers on, to put a 3/4" pipe thread X garden hose thread in the water inlet and turn the hose on full=blast. Have the manifold assembly upright. (in running position) If water comes out of any of the exhaust dumps, you've got an internal leak. Water will come rushing out of the exhaust outlet, but that's OK. Let it run for a couple of minutes, at least. Note that this is best done with the manifolds OFF the engine. I have a pair of used Osco replicas of PCM manifolds, but I don't have any 3" risers. |
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"Art"
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KTempleton wrote: