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 10Likes
12-29-2012, 09:04 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
I see you have a PCV running to the back plate of the intake manifold from your brake booster port on the carb; that's good. But I see that on the driver's side valve cover you have a cap that does not allow breathing. Is your breather over on the passenger side valve cover? (Which I can not see). You have to have some place for the air to be drawn in.
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12-29-2012, 09:11 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
... and do I only see one throttle return spring from your throttle shaft lever to the black brace on your intake manifold? Having only one spring is high-risk.  |
12-29-2012, 09:27 AM
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CC Member
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Join Date: Sep 2006
Location: No city...only 118 residents in Manter,
KS
Cobra Make, Engine: Cobra Auto Works body, Ron Godell Racecars chassis, 1989 Mustang GT 5.0 HO (converted to carb), W/C T-5, 3.73's in a Ford 9" Traction-Loc.
Posts: 812
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Not Ranked
Quote:
Originally Posted by patrickt
I see you have a PCV running to the back plate of the intake manifold from your brake booster port on the carb; that's good. But I see that on the driver's side valve cover you have a cap that does not allow breathing. Is your breather over on the passenger side valve cover? (Which I can not see). You have to have some place for the air to be drawn in.
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Patrick, help me out here. It was always my understanding that the PCV (Positive Crankcase Ventilation) valve was designed to vent pressure from inside the engine that was a result of combustion gasses bypassing the rings, a common and unavoidable process. I was unaware that any form of fresh air intake was necessary...in fact, as I understand it, the PVC system requires pressure in the crankcase and a vent could prohibit pressure from building.
Please set me straight on the function of the PVC valve/system....
Thanks!
Cheers!
Dugly 
__________________
YD,E./PNB
No names were changed to protect the innocent! 
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12-29-2012, 10:03 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by YerDugliness
Patrick, help me out here.
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You gotta have an entry point for the fresh air draw on a PCV system, whether it be "open" or "closed." You don't just rely on the blowby pressure. Here's a decent write-up on PCV systems PCV Systems - Google Books and I think we've had at least a dozen good threads on them here as well. |
12-29-2012, 10:24 AM
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CC Member
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Join Date: Jul 2011
Location: Shreveport,
LA
Cobra Make, Engine: SAI; '68 427FESO Southern Automotive
Posts: 300
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Not Ranked
That is absolutely gorgeous! The side exhaust may not be period correct for this car but it certainly looks fine. I like your current engine look much better.
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12-29-2012, 12:14 PM
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CC Member
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Join Date: Oct 2012
Location: Burbs,
IL
Cobra Make, Engine: ERA #472, Previous owner of ERA #677 427, ERA 289 FIA-USRRC Street
Posts: 221
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Not Ranked
Quote:
Originally Posted by Tutosnake
That is absolutely gorgeous! The side exhaust may not be period correct for this car but it certainly looks fine. I like your current engine look much better.
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Thank you...I think once the black wires and cap are in place, it will have that muted look that I prefer...red wires are a bit custom hot rod to me. I would like to keep it more original in appearance.
__________________
"Some things get meaner as they get older."
Last edited by 427 Street; 12-29-2012 at 01:34 PM..
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12-29-2012, 12:12 PM
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CC Member
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Join Date: Oct 2012
Location: Burbs,
IL
Cobra Make, Engine: ERA #472, Previous owner of ERA #677 427, ERA 289 FIA-USRRC Street
Posts: 221
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Not Ranked
Quote:
Originally Posted by patrickt
I see you have a PCV running to the back plate of the intake manifold from your brake booster port on the carb; that's good. But I see that on the driver's side valve cover you have a cap that does not allow breathing. Is your breather over on the passenger side valve cover? (Which I can not see). You have to have some place for the air to be drawn in.
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I have 2 Motorcraft breathers on it...I used those as temporary caps/dust covers until the breathers were shipped to me...keen eye!
__________________
"Some things get meaner as they get older."
Last edited by 427 Street; 12-29-2012 at 01:34 PM..
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