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Author Topic: 390 USING OIL AND WATER  (Read 2520 times)

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fryedaddy

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390 USING OIL AND WATER
« on: September 06, 2017, 10:55:42 AM »
My uncle has a 390 that he had freshened up,new rings,gaskets,etc.it seems to run ok but after a few days he has to add oil and coolant.its not mixing them,its just using.???
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1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

chilly460

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Re: 390 USING OIL AND WATER
« Reply #1 on: September 06, 2017, 11:31:12 AM »
What intake gaskets did he use?
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fryedaddy

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Re: 390 USING OIL AND WATER
« Reply #2 on: September 06, 2017, 02:33:20 PM »
Quote from: chilly460 on September 06, 2017, 11:31:12 AM
What intake gaskets did he use?
felpro,you think it is his intake seal?after about 50 miles of driving,you have to put in a quart of oil and a quart of water
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1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

blykins

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Re: 390 USING OIL AND WATER
« Reply #3 on: September 06, 2017, 02:59:46 PM »
That's the first suspect on an FE.....

Have him pull the spark plugs and see if he can narrow it down to any particular cylinder.
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Brent Lykins
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fryedaddy

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Re: 390 USING OIL AND WATER
« Reply #4 on: September 06, 2017, 10:36:28 PM »
thanks,i will tell him
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1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

jholmes217

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Re: 390 USING OIL AND WATER
« Reply #5 on: September 07, 2017, 10:56:22 AM »
Did he bend down the head gasket tabs and has he re-torqued the intake manifold bolts after a couple heat cycles, and then again after a few more heat cycles?  I've learned the hard way on both of those.
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Jeff
1969 Mach 1 Q code 428 Cobra Jet
4 speed, 3:50 traction lock
Olympia WA. area
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