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Old 04-01-2011, 07:18 PM   #1 (permalink)
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new 390, do I need PCV ? EGR ?

Hi, I put a new 450HP 390 in my 64. I used some sweet chrome Ford Motorsport twist in style valve cover vents in each valve cover. Problem is it stinks, after about 10 mins the smell is over whelming in the car from the engine internal exhaust.

Should I have one valve cover with a solid cap and the other with a vent that goes back to the carb or into the air cleaner? PCV or EGR ?

I'm a little lost on this...
Thanks guys
Patrick
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Old 04-01-2011, 07:30 PM   #2 (permalink)
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You really need a PCV valve in one and a vented cap in the other. A new motor will have a lot of blow by as the piston rings seal. It could blow out your rear main and such. Definitely vent the motor with the carb or intake.
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Old 04-01-2011, 07:33 PM   #3 (permalink)
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Re: new 390, do I need PCV ? EGR ?

On my 65 the oil filler cap on the driver side is where the air gets sucked in. The PCV on the passenger side is where the air and bypass gasses get sucked out. The suck comes from the spacer on the intake, via the hose to the PCV.

I think the 64 system set up is different but which one you use may be dictated by which engine you have.
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Putts drives a 1965 four door Galaxie. Rebuilt 390. 4100 on a Performer, AC, PS, PB w scarebird front discs on Cragar S/S, MX transm w/3.0 rear. The sound, seats, dash and hood are customized.
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Old 04-02-2011, 12:19 PM   #4 (permalink)
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Re: new 390, do I need PCV ? EGR ?

As mentioned you need a PCV system to one valve cover and vent the other. Just a vent might not get rid of all of the stink though as the PCV system might not be able to remove all the fumes in all conditions. The vent side should go to the air cleaner on the carburetor side of the filter element so when the PCV system is drawing fresh air into the engine it is filtered and the excess fumes are drawn into the carb and burned.
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Old 04-03-2011, 04:41 AM   #5 (permalink)
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Re: new 390, do I need PCV ? EGR ?

Here is 1964 FE390 PCV system :
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new 390, do I need PCV ?  EGR ?-fe390-1964-pcv.jpg  
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Old 04-03-2011, 09:37 AM   #6 (permalink)
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Re: new 390, do I need PCV ? EGR ?

I saw on Horsepower this weekend thay had a high HP engine and the blowby gasses were pushing back through the rings. So they bought a kit. Drilled holes in each valve cover and holes in each header collector. Then put check valve fittings in and connected it with a heater hoses. So the exhaust collecting in the valve covers was routed to the exhaust. You might want to find that episode and check it out.
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Putts drives a 1965 four door Galaxie. Rebuilt 390. 4100 on a Performer, AC, PS, PB w scarebird front discs on Cragar S/S, MX transm w/3.0 rear. The sound, seats, dash and hood are customized.
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Old 04-04-2011, 08:03 PM   #7 (permalink)
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Re: new 390, do I need PCV ? EGR ?

Got all my pieces and parts at Oreilly this weekend. Grommet for the twist in valve covers, elbow, PCV valve, hose... all hooked up, runs better and no more exhaust stink in the car.

Thanks for the tips and advise guys.
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Old 04-05-2011, 11:49 AM   #8 (permalink)
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Re: new 390, do I need PCV ? EGR ?

Step into the way back time machine, older engines had a tube from the crankcase that let passing air draw the fumes out into the atmosphere.
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Old 04-06-2011, 08:05 AM   #9 (permalink)
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Re: new 390, do I need PCV ? EGR ?

Quote:
Originally Posted by iowawinger View Post
Step into the way back time machine, older engines had a tube from the crankcase that let passing air draw the fumes out into the atmosphere.
pre 63
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