SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: jamiemwedmore1234 on September 13, 2015, 08:20:37 PM

Title: Water in the oil
Post by: jamiemwedmore1234 on September 13, 2015, 08:20:37 PM: After a fun lake day came home cleaned the boat up getting ready to put it away until the south wind regatta and I check the oil and BAM oil white and about two extra qrts so I pull all the spark plugs out and #8 has water in it !!! Mind you the boat ran great so I pulled the intake off and gasket seemed fine did see signs of water in the intake on cylinder 8 so now what I was thinking of putting new intake gaskets on it and changing the oil or should I go further any thoughts !!!!!!

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Title: Re: Water in the oil
Post by: jimpen on September 13, 2015, 08:43:01 PM: Quote from: jamiemwedmore1234 on September 13, 2015, 08:20:37 PM
After a fun lake day came home cleaned the boat up getting ready to put it away until the south wind regatta and I check the oil and BAM oil white and about two extra qrts so I pull all the spark plugs out and #8 has water in it !!! Mind you the boat ran great so I pulled the intake off and gasket seemed fine did see signs of water in the intake on cylinder 8 so now what I was thinking of putting new intake gaskets on it and changing the oil or should I go further any thoughts !!!!!!

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. Go to the head gaskets.

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Title: Re: Water in the oil
Post by: jyeager on September 13, 2015, 08:57:10 PM: Quote from: jimpen on September 13, 2015, 08:43:01 PM
. Go to the head gaskets.

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Title: Re: Water in the oil
Post by: jamiemwedmore1234 on September 14, 2015, 02:29:56 PM: Whelp pulled the heads had them checked for cracks and being warped they checked out good gaskets looked good filled the block up with water and found a pin hole in the cyclinder

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Title: Re: Water in the oil
Post by: mobboss on September 14, 2015, 02:40:58 PM: At the top or bottom of the cylinder ??? It matters!!!

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Title: Re: Water in the oil
Post by: jamiemwedmore1234 on September 14, 2015, 02:45:41 PM: Middle cyclinder #8 3:00 position

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Title: Re: Water in the oil
Post by: mobboss on September 14, 2015, 03:09:34 PM: Dam that sucks!! If it was the bottom you could use blok fill to where the pin hole was.

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Title: Re: Water in the oil
Post by: 87hardin on September 14, 2015, 08:11:48 PM: How can some go about to avoid a pinhole in your cylinder just asking. Im new to jet boating.
Title: Re: Water in the oil
Post by: GT Jets on September 14, 2015, 10:04:49 PM: Quote from: 87hardin on September 14, 2015, 08:11:48 PM
How can some go about to avoid a pinhole in your cylinder just asking. Im new to jet boating.

Normally caused by poor casting. Sometimes excessive electrolysis/rust.

I've seen more cracks than porosity.

GT
Title: Re: Water in the oil
Post by: 87hardin on September 14, 2015, 10:06:32 PM: Ok thank you for your help
Title: Re: Water in the oil
Post by: jamiemwedmore1234 on September 15, 2015, 01:02:48 PM: Quote from: 87hardin on September 14, 2015, 08:11:48 PM
How can some go about to avoid a pinhole in your cylinder just asking. Im new to jet boating.
i would say drain the water out of you block when not using it never had this happen before definitely not a crack just a pin hole ! Pisses water through it under just the weight of the water in the block time to tear it dwn re sleeve it its a shame tho motor only has about 30 hrs on it

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Title: Re: Water in the oil
Post by: jamiemwedmore1234 on October 23, 2015, 05:18:49 PM: 1750 $$ later 2 sleeves new main &rod bearings some new powder coat she's ready to be put back in

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Title: Re: Water in the oil
Post by: Flusher on October 23, 2015, 05:55:44 PM: That blue really pops
Title: Re: Water in the oil
Post by: jamiemwedmore1234 on October 23, 2015, 06:00:32 PM: Yes it does was thinking of painting the motor yellow that might pop it even more plus there's a hint of yellow on the boats just don't know if the yellow will last

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Title: Re: Water in the oil
Post by: Flusher on October 23, 2015, 07:33:06 PM: I used the POR-15 Chevrolet red on my Corvette engine. I was pretty impressed with their products. I can't seem to find any information, nor can I find the can, but I put on (what I remember) stainless pigment rust preventive paint followed by the engine enamel. I wouldn't buy the kit, just the POR-15 black and the engine enamel in the smallest quantity (it's enough for many engines).
Title: Re: Water in the oil
Post by: jamiemwedmore1234 on October 23, 2015, 08:19:50 PM: And no I don't care for the Chargers

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Title: Re: Water in the oil
Post by: MorePower on October 23, 2015, 08:37:03 PM: I dig it man!!!!! Looks great. Watch out! That powdercoat will become a problem (as in you'll want to coat everything)

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Title: Re: Water in the oil
Post by: jamiemwedmore1234 on October 24, 2015, 11:13:45 AM: Looks good but definitely won't do yellow again don't like it enough

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Title: Re: Water in the oil
Post by: SSpeeDEMONSS on October 24, 2015, 06:54:55 PM: At least you'll be able to see if there are any leaks. I did white on my 12v and let's just say it didn't stay white for long.

Garrett
Title: Re: Water in the oil
Post by: Flusher on October 24, 2015, 07:04:21 PM: A few squirts of Zep citrus cleaner and some spot-free rinse at the self-serve car wash will keep it looking nice. Just need to make an effort to keep the Exxon Valdez oil slick from forming in the bilge.