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09-30-2012, 10:04 PM | #21 |
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Re: Ford Y Block PCV System
this is the early four barrel manifold....
the PCV screws in a port drilled into both plenums |
10-01-2012, 02:01 AM | #22 | |
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Re: Ford Y Block PCV System
Quote:
Of all the things to do to make an engine ugly (IMO) is to put the system on rocker covers. Even the early SBF and FE/MEL had a hidden system.
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10-01-2012, 02:09 AM | #23 | |
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Re: Ford Y Block PCV System
Quote:
OH!... BTW PCV valves are calibrated to needed designed airflow (carb mixture calibration). I would use the MOTORCRAFT valve designed for this application. Anything else may throw mixture calibration off and you have to make allowances.
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10-01-2012, 06:54 PM | #24 |
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Re: Ford Y Block PCV System
kultulz
here's a Fram Ford 90 degree PCV valve. http://www.summitracing.com/parts/FRM-FV202/ looks like it's for '62 and up small blocks. $1.95! i might get two spares to put in rollaway! that's close enough for any y block. have a good one!
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10-02-2012, 09:26 AM | #25 |
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Re: Ford Y Block PCV System
This is an easy setup with inline PCV. The gas exits at the rear valley cap.
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Mike, S. Oregon 46 Ford 1/2 ton, '62 Merc Meteor S33, '54 Ford 600 tractor, '64 Falcon Futura, 1960 Thunderbird |
10-02-2012, 09:55 AM | #26 |
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Re: Ford Y Block PCV System
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The same Ford screw-in PCV that fits in the manifold I showed earlier didn't work at all when installed in the rear valley pan vent (draft tube opening) of my T-bird 312. Idle RPM went up in the neighborhood of 700-750 rpm and I couldn't tune it out - acted like a big vacuum leak - which it was. After looking through a handfull of the dumb things, I came to the (DUH) conclusion that all the PC valve was, was a checkvalve to prevent backfires from pressurizing the engine interior - and otherwise it was open suction, orficed by the way it was mounted, piped and internally ported. So I tried a few different orfices hidden in the piping until the carb tuning came back under control (and I still had a bit of constant vacuum on the PCV inlet). |
10-02-2012, 02:04 PM | #27 |
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Re: Ford Y Block PCV System
y blockers
here's how a PCV system and the PCV valve work. http://en.wikipedia.org/wiki/Pcv_valve. putting a later type PCV system on is for High Performance y blocks. it can be used on restored cars if you save all your old parts for one you sell the car. an original PCV system is pretty close in doing a good job as the later setup. have a nice day!
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