Longer PCV Hose
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Longer PCV Hose
I've switched to an Edelbrock 1406 carb. The PCV vacuum port is on the front and is for 3/8" hose. Does anyone know a proper way to get a longer PCV hose from the 1/2" PCV in the valve cover cap, to the carb?
Fleet Owner
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From: NorCal
The other is to spec a formed hose with two 90-degree bends. I wanna say Autozone's "Help!" section has such a hose or at least close to it.
Cargo Master
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I glanced back and saw you have a recently built 390...correct? You could just put a cap on the PCV port in the carb and replace the PCV valve with another valve cover breather. No need for a PCV valve unless you have some emission requirements. If you have a 180 or 195 thermostat it should get warm enough to drive off any moisture or what ever little blow by gas you get. I run 4 valve cover breathers on my FE...one on each end of the valve covers. No real need for a PCV valve on and old car/truck.
Fleet Owner
Joined: Dec 2009
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From: NorCal
I glanced back and saw you have a recently built 390...correct? You could just put a cap on the PCV port in the carb and replace the PCV valve with another valve cover breather. No need for a PCV valve unless you have some emission requirements. If you have a 180 or 195 thermostat it should get warm enough to drive off any moisture or what ever little blow by gas you get. I run 4 valve cover breathers on my FE...one on each end of the valve covers. No real need for a PCV valve on and old car/truck.
A race engine doesn't need an PCV because they are a maintained, oil changes/internal adjustments, more frequently.
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Cargo Master
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Just be careful. I used to think the same as HIO Silver and that PCV valves were a must, but be careful. The wrong valve or poor set up will wreck your engine way, way faster than not having a valve. I recommend installing a vacuum trap between your PCV valve and carb at least until you're confident you're not sucking oil mist. Your rockers will turn the oil to mist starting around 2200 rpms so if you run the freeway a lot (like I do at 2500 or more rpms) you'll make lots of mist. Oil mist in the combustion chambers can cause detonation...especially under load and with today's gas quality. Or you might "only" gum your rings so they can't do their job.
Use PCV if you must, but it ain't as simple as grabbing a valve. Car makers have time and experience to dial one in to the application. Wagner has an adjustable (kinda pricey) valve that might make selection easier. Or you might get lucky and find the right PCV valve first try. Do you feel lucky ?
Fleet Owner
Joined: Dec 2009
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From: NorCal
A PCV valve is just a check valve. Shoot some carb cleaner through it when ya change your engine oil and it should be good to go for years.
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
Lead Driver
Joined: Jul 2011
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From: On the Edge of the Desert
Originally Posted by HIO Silver
A PCV valve is just a check valve. Shoot some carb cleaner through it when ya change your engine oil and it should be good to go for years.
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
Cargo Master
Joined: Jan 2016
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A PCV valve is just a check valve. Shoot some carb cleaner through it when ya change your engine oil and it should be good to go for years.
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
The next time the passenger valve is off, verify the PCV valve area is shrouded... the shrouding/shielding minimizes the amount of oil mist evacuated from the crank case....
They are actually only needed in a modern emission controlled car/ truck and even then they can break and cause problems.
The wrong PCV valve is worse than none at all in a carbureted FE. It's a simple matter to verify no mist is passing the PCB with a trap. I hate to see the OP ruin a fresh engine over a PCV valve.
Lead Driver
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From: On the Edge of the Desert
The weight is controlled by vacuum. Since MOST engines pull roughly the same amount of vacuum at idle (20" or so) the PCV valve really is just a check valve. The size of the engine, the carb, intake, exhaust, compression ratio, have no affect on the PCV valve. Only vacuum controls the valve.
Cargo Master
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The weight is controlled by vacuum. Since MOST engines pull roughly the same amount of vacuum at idle (20" or so) the PCV valve really is just a check valve. The size of the engine, the carb, intake, exhaust, compression ratio, have no affect on the PCV valve. Only vacuum controls the valve.