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BOBS 2 68S
Official CCB Member
Joined: Sun Aug 04, 2013 2:19 pm Posts: 375 Location: Hudson
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Intake manifold gaskets didn't seal
So on the new Blue Print motor, I am using a quart of oil every 200-250 miles. Motor has 2500 miles on it. Rings should be seated,right? Called Blue Print they said to check plugs and run a compression test. All but one plug is oil fowled . Compression test is 150-155. They said to replace intake gaskets. Pulled intake and gaskets show signs of oil getting past into runners on both sides. I have never seen this before. I used the Fel-Pro gaskets that came with the motor. Short of putting a sealant around each port anyone have a suggestion on a fix? Intake is a new Weiand.
Don't know about you all but miss the breakfasts!!
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Thu Jun 04, 2020 8:34 pm |
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Viperwolf1
Official CCB Member
Joined: Tue May 07, 2013 10:37 pm Posts: 1485
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Re: Intake manifold gaskets didn't seal
Felpro 1250 gaskets are notorious for leaking.
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Fri Jun 05, 2020 10:21 am |
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horseplay
Official CCB Member
Joined: Mon Jan 21, 2013 8:24 pm Posts: 408 Location: Grand Junction CO
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Re: Intake manifold gaskets didn't seal
Also check the fitment of your intake if a lot of machining was done to the deck and heads could be a problem. I've run into this a couple of times with 351W and after market intakes.
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Fri Jun 05, 2020 12:46 pm |
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TOOLMAN
Official CCB Member
Joined: Mon Feb 14, 2011 10:29 am Posts: 768 Location: The MHC
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Re: Intake manifold gaskets didn't seal
I've had bad luck with Weiand intakes but I think mine was warped a little. I've always done silicon around the water jackets and when torquing, go through the sequence at least three times. I've seen people do gas resistant RTV around the runners, but that seems cheap. I've also read with aluminum intakes you should re-torque after the engine has warmed and cooled (after break-in for new motors) because the cast iron vs. aluminum is a little wierd. Someone can correct me if I'm wrong.
I would advise finding the absolute correct gaskets (there's a few out there) and but the best they have.
Good luck!
_________________ Wilma - 71 1/2 Wagon; 3 1/2" WH lift, 1" BL, NP435, Chebby disc front, WH twin stick D20, EFI 302, Cool hood scoop, mucho cancer; purchased in 1990.
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Fri Jun 05, 2020 9:56 pm |
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BOBS 2 68S
Official CCB Member
Joined: Sun Aug 04, 2013 2:19 pm Posts: 375 Location: Hudson
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Re: Intake manifold gaskets didn't seal
What is the preferred gaskets now days? Weiand recommends torque to 18 ft pounds so that is what I did, this time I went to what Ford recommends. So it is back together and miles will tell.
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Sat Jun 06, 2020 5:37 am |
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BOBS 2 68S
Official CCB Member
Joined: Sun Aug 04, 2013 2:19 pm Posts: 375 Location: Hudson
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Re: Intake manifold gaskets didn't seal
Changed gaskets, still using oil. Did notice the PCV hole on valve cover is over a rocker arm and when running oil splashing onto PCV valve. PCV hose dripping oil. Rocker arms are wider than what was on the old motor. Put a baffle to stop oil splash. Still see oil under carb inside intake. Replaced PCV valve. Next step is to put on an old Ford aluminum 2 barrel intake and a 500 cfm 2 barrel carb or Sell all this old crap and buy a Prius
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Tue Jun 23, 2020 6:01 am |
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Jesus_man
Official CCB Member
Joined: Thu Nov 11, 2010 10:36 am Posts: 5984 Location: California
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Re: Intake manifold gaskets didn't seal
_________________ 1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow. http://www.ucora.org
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Tue Jun 23, 2020 10:02 am |
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BOBS 2 68S
Official CCB Member
Joined: Sun Aug 04, 2013 2:19 pm Posts: 375 Location: Hudson
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Re: Intake manifold gaskets didn't seal
An update on the oil consumption problem. The 25+ year oil plastic PVC valve was shot. Installed a new all steel valve and oil consumption is almost none. DAMM $3.00 parts. I took the Cardinal out for a test run two weeks ago for a fuel mileage run. 11.2 MPG I can live with that. I took it down to lakecreek Monday for my first camping trip with the Cardinal. Was gone two nights for a elk hunting scouting trip. Made it all the way home with about 2 gallons left. Still happy with the camper.
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Wed Jul 15, 2020 4:25 pm |
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Kinder
Official CCB Member
Joined: Wed Sep 29, 2010 10:03 pm Posts: 4371 Images: 0 Location: Parker, CO
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Re: Intake manifold gaskets didn't seal
_________________ Best to Date MPG: 26.6
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Wed Jul 15, 2020 8:03 pm |
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Rox Crusher
Official CCB Member
Joined: Sun Oct 10, 2010 5:36 pm Posts: 3980 Location: Roxborough Park, Colorado
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Re: Intake manifold gaskets didn't seal
check you out with the camper.................awesome !
_________________ 1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.
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Thu Jul 16, 2020 5:29 pm |
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