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By Archangel007 - 16 Years Ago
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Hi Guys, I have just joined this forum due to becoming the owner of a Y-Block when I bought my '56 F100 for restoration. I was going to flick it in favour of a 4.6 Litre 'Cammer' but my brother (a lover of Customlines and Mainlines) convinced me not to.  Anyway, a quick question to all you Y-Block officianado's who know best - can the oil filler tube located in the valley cover be dicthced in favour of one in the valve cover? Has this ever benn done (I persobally have'nt seen it) and why not?  Thanks, Tricky
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By charliemccraney - 16 Years Ago
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It sure can. I don't think you'll find valve covers with provisions to fill the oil but it shouldn't be hard to add one. You will need to ensure that a breather is retained. The stock oil fill cap is also the intake for the crankcase ventilation system.
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By Archangel007 - 16 Years Ago
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Thanks Charlie, So if I remove the road draft tube, add PCV off the valley connected into the manifold, and then use a filler lid that is breathable (or a breathable vent) would this be they way to do it?? As you can see, I am looking at removing the road draft breather as well. Thanks, Tricky
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By charliemccraney - 16 Years Ago
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It sounds like that will work.
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By GREENBIRD56 - 16 Years Ago
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I'm going to ask this out loud 'cause I don't know - but....don't the boat engine valve covers have the filler cap centered on one side? Maybe one of the guys has got a tin valve cover from that application. More than a few low hour Y-block boat engines have been "salvaged" for road use over the years...
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By 56 big window - 16 Years Ago
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Hey Tricky , I just finished a 56 f100 restoration . It was thmost fun ive had in a long tome . I wish the same to you ! good luck . Frank
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By John Mummert - 16 Years Ago
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You can weld a piece of exhaust tube into the valve cover. Either hole saw a hole first or drill multiple 1/4" holes that could act as a baffle. I used 1 tube in each valve cover years ago. It was very common in the days when Y-Blocks were raced to add breather tubes to the valve covers. The original breather tube is 1-3/8" but it is much easier to find breathers for 1-1/2". Find the breather cap you want to use before deciding which tube size to weld in. 
I don't know that they need to be this long.
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By Archangel007 - 16 Years Ago
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Brilliant guys thanks! Frank - my first Y-Block and my dream toy of a '56 Effie. Usual story, big plans, tight budget, poor knowledge. But with sites like this, info and inspiration is just a post away - thanks all for responding John - order coming your way soon. Tricky
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By 55Birdman - 16 Years Ago
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I have a Vintage Speed valley cover on my bird. I swapped my original valve covers for chrome and installed an edlebrock braether tube in each valve cover. Been about a year now works fine . If you would like a picture let me know.
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By Archangel007 - 16 Years Ago
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55Birdman, Yes, I would love to see a photo of your setup - it will give me a better understanding of what to try and emulate. Thanks, Tricky
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By Ted - 16 Years Ago
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Steve is right in that the marine engines have a oil fill cap in one of the valve covers. These valve covers can very often be found at marine salvage houses. The caps on these covers actually appear to be fuel fill caps and twist on. Here’s a pic. 
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By 55Birdman - 16 Years Ago
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Hope these help 
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By Archangel007 - 16 Years Ago
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Great pictures guys!! Is there any advantages in having two breathers per bank other than one? 55Birdman, I didnt notice how you fill the oil, is the opening on the other bank? Are you running a PCV in the valley cover? Is the road draft tube deleted? Thanks again, Tricky
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By PF Arcand - 16 Years Ago
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Ted: Is the photo of your EMC engine? And I know this question has been asked before, but what engine block Red are you using?. The spray can stuff I used tends to turn orange in short order. Thanks.
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By PF Arcand - 16 Years Ago
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My previous question is off the opening topic & I should have transferred it to "this & that." Sorry.
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By Ted - 16 Years Ago
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PF Arcand (11/8/2009)
Ted: Is the photo of your EMC engine? And I know this question has been asked before, but what engine block Red are you using?. The spray can stuff I used tends to turn orange in short order. Thanks.Paul. That is the EMC engine. The paint is Krylon Ford Red engine enamel. Seems to be a little brighter red than other two brands that are locally available. Archangel007 (11/8/2009)
Is there any advantages in having two breathers per bank other than one?
Tricky. Additional breathers have some benefit when running the engine repeatedly at full throttle. My 427 HiRiser has a total of six breathers on it. If I use a header evacuation system on a race engine, then I’ll not use any breathers and the engine will be effectively sealed up so the evacuation system can run a negative pressure (vacuum) on the crankcase.
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By Archangel007 - 16 Years Ago
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Hi Ted, The header evacuation system is only good at high RPM is that right, as in the exhaust gas stream must be sufficiently fast to create a negative vacuum in the sump, which is only created at higher engine rpm's - am I correct here? Sounds like single breathers in the valve covers, PCV in the valley cover and elimination of the road draft breather tube is the way to go, thanks guys. Cheers, Tricky P.S. Really nice engine Ted!
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By 55Birdman - 16 Years Ago
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There are 2 screws that hold the top cover on the breather. Just remove those and remove screen and put oil in. I have pvc valve on drivers side . Kinda hard to see in these pics. As for 1 or 2 breathers on each side I guess its a matter of personal preference. My car is a stock daily driver and didnt think 2 were necessary. Maybe wrong but the 2 work ok. Road draft tube is gone completely. The valley pan is from Charlie Price Vintage Speed in Fla.
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By Archangel007 - 16 Years Ago
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Thanks 55, that is a really nice setup. Thanks for the information too. Cheers, Tricky
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By Ted - 16 Years Ago
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Archangel007 (Tricky) (11/9/2009)
Hi Ted, The header evacuation system is only good at high RPM is that right, as in the exhaust gas stream must be sufficiently fast to create a negative vacuum in the sump, which is only created at higher engine rpm's - am I correct here?That’s essentially correct. Header evacuation systems are ineffective where mufflers are being used as the increase in backpressure prevents an adequate flow at the evacuation pickup port. This makes header installed evacuation systems only suitable on racecars where restrictive mufflers and tailpipes are not being used. Depending upon the collector size, the evacuation systems can start working as low as 2500 rpms if they are installed into the collectors at the optimum position.
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By Archangel007 - 16 Years Ago
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Thanks Ted, a good bit of knowledge there for us all. Cheers, Tricky
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