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Old 12-11-2019, 04:40 PM   #1
modeleh
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Default PCV on multiple carb intake

I’m going to be putting an Edelbrock 4x2 on my 8ba and was wondering if it’s worth goofing around trying to add a pcv system to the engine. This intake has small transfer ports between the carbs. I’m considering installing a system hidden under the intake manifold. I’m thinking if the pcv vacuum port is only under one carb it’s going to affect the mixture of only two cylinders. I suppose a fitting would need to be installed under each carb and manifold it all together? Or am I best to just let sleeping dogs lie and leave it alone and run a draft tube?
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Old 12-11-2019, 05:48 PM   #2
JSeery
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Default Re: PCV on multiple carb intake

I wouldn't mess with a PCV on a multi carb setup, but that is just me.
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Old 12-11-2019, 10:10 PM   #3
modeleh
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Default Re: PCV on multiple carb intake

That’s good enough for me, I’ll forget about the idea. Thanks for your input Jseery.
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Old 12-11-2019, 11:21 PM   #4
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Default Re: PCV on multiple carb intake

Multi carb setups are hard enough to tune without added complications.
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Old 12-12-2019, 12:32 PM   #5
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Default Re: PCV on multiple carb intake

I am a strong believer on PCV on all engines, however, a PCV on an old flat-head that is in good shape with little to none blow bye might be over kill. I can honestly say that I have never had a blow bye issue with my '36 in the 67 years I have owned it.
I for damn sure would not install a PCV on the bottom side of the intake manifold, having to remove the intake to service the valve would be a huge waste of time.
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Old 12-12-2019, 03:39 PM   #6
51 MERC-CT
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Default Re: PCV on multiple carb intake

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Quote:
Originally Posted by modeleh View Post
I’m going to be putting an Edelbrock 4x2 on my 8ba and was wondering if it’s worth goofing around trying to add a pcv system to the engine. This intake has small transfer ports between the carbs. I’m considering installing a system hidden under the intake manifold. I’m thinking if the pcv vacuum port is only under one carb it’s going to affect the mixture of only two cylinders. I suppose a fitting would need to be installed under each carb and manifold it all together? Or am I best to just let sleeping dogs lie and leave it alone and run a draft tube?
Suspect you would be better off getting the 4 carbs operating correctly (if you ever do) before considering installation of a PCV system.
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