SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: Offroader310 on April 16, 2007, 12:27:45 PM
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hello . . all . . . i'm pretty new here. here's my dilemma. i have a ford 460 in a 18' jet boat. and i love it. I had to replace my gas tank this year and when i was ready to start it up, i checked the oil and found . . . . WATER mixed with oil . . BAD BAD BAD . . .
so i popped open the intake & heads. everything looks pretty good. so i'm replacing the gaskets and gonna start it up again. here's my problem, i can't find the correct bolt tightening sequence for the intake. Can anyone help? i found the torque specs for all the bolts and even the tightening sequence for the heads, but nothing for the intake. ALSO . . .
SECOND issue. . .
when i pulled the intake and heads i was looking for the "problem" area. . . couldn't find anything. so i was doing some digging around and found that some people are saying that the jets might have too much water pressure causing water to blow into the heads and those people are using a water pressure regulator. ANY IDEAS? please help. i need to get this boat back in the water, my bro has a seadoo and keeps teasing me that it runs better then the boat. . . .it doesn't but since the boats down he's getting in the cheap shots.... i can't wait til i get in front of him and hit him with the jet! ( BTW i'm kidding) but my boat is faster than his ski.
i'm in Yorba Linda, i'm hoping to get this thing up and running soon, so i can get out and meet some of you guys at Elsinore and Havasu. Also, i'm frequently in Laughlin too . . . i love to gamble!
Thanks in advance for the help! ---TIM
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first welcome to the site tim, now i'm sure there is a proper sequence but what i do is just start in the middle and work out criss crossing back and forth
do you have water injected headers? do you have a valve on incoming water that yoou can adjust? we will need these ?? answered to help you diag the water prob.
hope this helps ralph
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i see im not the only one having the problem with water getting into the oil
i just intalled a new motor so i adding a water pressure regulator just to be on the safe side
you can get one from home depot or
buy this kit i think im going to try this out so ill let you know how it works out
http://www.arsmarine.com/Engine_Parts/Engine_Parts.htm
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This is the correct 460 intake manifold bolt tightening sequence.
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fimg300.imageshack.us%2Fimg300%2F5729%2Fnewjetboat074vh3.jpg&hash=c8e54f9ed533f5575fbd059b3029ddd33e384107) (http://imageshack.us)
but starting in the middle and working your way out has never let me down either ;D
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hey hey . . .i knew i was in the right place, thanks for all the help guys, i'll be jumping into the boat here pretty soon (today) and looking around and reinstalling the heads and intake. and i'll let you know what i find as far as the water regulator, and fittings and such, i'll even try to snap a few pix. AGAIN THANK YOU.
hopefully i'll be up and running by the weekend! ;D
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Offroader,
I have the same problem with my 460. At first it was the t-valve for my water injected headers, this was replaced with a Bassett T-valve and looked like it corrected the problem. I didnt have any water in the oil the next time i took it out. However, i took it out last Friday and noticed that the water was back in the oil, AND IT WAS BAD THIS TIME! Luckily, TheChaz was out there with me and was able to see that i just needed to completley replace the intake gaskets. Im gonna do one better and just install a whole new intake from Edelbrock (performer RPM,same one thats on their now).
I got the whole package: intake manifold, gaskets(intake and carb), sealent all shipped to my door for $260 from JEGS. Were gonna install it sometime this week or next, hopefully this will solve my problem.
Good luck with your install and let us all know how it turns out, alot of us here have the same motor and sometimes the same problems so its good to get the word out, you might just save somebody else some heartache!
Oh yea, welcome to the site!
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what are your water temps? the reason i am asking is sometimes condensation will happen if you are running to cool
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sorry i dont have any temps right now, i dont remember from last year and the boat hasn't been out yet this year.
okay, well i got it back together. and i just realized this might be a double post, i started a new topic, ( sorry) but , the engine is alive. . . now i just need to make sure i have all the water ( cooling) lines ran correctly. Will someone please help/ can you post up a pic or email it to me. or even better draw me a little diagram? ? ? sorry i know i ask a lot, but i really appreciate all the help. here's my email if its easier to just send a pic or drawing that way.
hamano6@gmail.com
THANKS AGAIN!
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WOOHOO!!!! she's alive!!!! i'm still waiting on the water regulator, but with just running the motor with a house for a few minutes, no problems and the kicker, she sounds really good! doesn't seem to have any wierd noises coming from the bearings or anything like that.
hopefully i'll have the regulator soon and get it installed. . . still hoping for the weekend!
THANKS EVERYONE FOR ALL YOUR HELP! I'LL UPDATE AGAIN ONCE ITS BEEN IN THE WATER!