SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Nolan Kramer on August 02, 2020, 07:19:11 AM

Title: Metal fell into block Help!
Post by: Nolan Kramer on August 02, 2020, 07:19:11 AM
HI everyone I have a mercruiser 502 mag mpi Gen v 1995. long story short i installed bell housing then went to re mount heat exchanger thinking i had plenty small enough bolts which then proceeded to snap off the brass oil pressure warning switch mounted behind it. when trying to remove broken threads some metal dropped in, does anyone have any ideas, or know where this passage leads, the engine is on the hoist right now, thanks for your time
Title: Re: Metal fell into block Help!
Post by: Flusher on August 02, 2020, 05:39:01 PM
Can you pull the distributor and prime for a second?  You could also try hitting the starter, when you have it in a safe condition, so it doesn't fall, WITH the ignition de-energized.

I'm not sure what port you are talking about, but it would come from a pressure source.

Chances are, the debris didn't go far and would be quickly expelled when oil squirts out of the port.

A picture would really help.  Also, is the pressure switch brass?
Title: Re: Metal fell into block Help!
Post by: angermgmt on August 02, 2020, 06:03:14 PM
Brass or steel?


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Title: Re: Metal fell into block Help!
Post by: Nolan Kramer on August 03, 2020, 05:00:21 AM
I can get a picture later, basically when i was using an easy out it kept spreading the brass further into the threads, so i had used a punch and ended up breaking the little bit of brass left to be able to remove, the very tip of a needle nose pliers broke and may have fallen down there but not sure also a little piece of brass fell down there, my oil priming tool is on its way, i really just dont want to throw engine in boat and have it gernade... the engine only has 46 hours on it
Title: Re: Metal fell into block Help!
Post by: angermgmt on August 03, 2020, 06:39:13 AM
Really need pics to give any further advice.


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Title: Re: Metal fell into block Help!
Post by: Flusher on August 03, 2020, 06:50:30 AM
You might be able to reach in with a small mechanic's magnet.
Title: Re: Metal fell into block Help!
Post by: angermgmt on August 03, 2020, 07:14:15 AM
Magnet won’t get the brass


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Title: Re: Metal fell into block Help!
Post by: Flusher on August 03, 2020, 08:51:35 AM


Magnet won’t get the brass

Use a brass magnet -- just kidding

Please see the OP's second post, quoted below for your convenience.

...the very tip of a needle nose pliers broke and may have fallen down there but not sure...
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