Carter YF cfm?
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Elder User
Joined: Sep 2008
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From: DeKalb, Ill.
Carter YF cfm?
I feel like a fool having to ask this question, but I can't find numbers anywhere.
What is the cfm rating for a '75 Carter YF one barrel carburetor?
If you wanna poke fun at me for being a dummy, go ahead.
Just be sure to give me the numbers.
Murph.
What is the cfm rating for a '75 Carter YF one barrel carburetor?
If you wanna poke fun at me for being a dummy, go ahead.
Just be sure to give me the numbers.
Murph.
MSEE
Joined: Apr 2004
Posts: 10,386
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From: Austin, TX
For some reason, 170 CFM is sticking out in my mind. Since they are 1-barrel and they are typically found on straight sixes which are intended to work at low RPMs, YFs generally have relatively low flow numbers. The CFM an engine calls for is a function of RPM and displacement.
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Elder User
Joined: Sep 2008
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From: DeKalb, Ill.
Although I can't find a concrete number, the number you
are recalling kind of matches what I've been hearing.
I'm trying to gather some sketches for a rebuild I'll eventually do.
The CFM/RPM equation I found tells me that 350 CFM might suit me well.
Some of my snooping around these forums has led me to believe
that an Autolite C90F might fit my application.
I need to know more about it's CFM rating, that post might pop up soon.
In the mean time, thanks,
Murph.
are recalling kind of matches what I've been hearing.
I'm trying to gather some sketches for a rebuild I'll eventually do.
The CFM/RPM equation I found tells me that 350 CFM might suit me well.
Some of my snooping around these forums has led me to believe
that an Autolite C90F might fit my application.
I need to know more about it's CFM rating, that post might pop up soon.
In the mean time, thanks,
Murph.
Elder User
Joined: Jul 2004
Posts: 911
Likes: 2
From: Northern Virginia, USA
196CFM, I believe, but that's 2BBL spec (3.0in hg). 4bbl spec (1.5in hg) makes it somewhere around 165-170CFM. 350-400CFM is all these motors will really handle. Holley 390 is popular, but needs to be tuned out of the box (it'll run, but not right). If you can find one, an old Holley Economaster 450 is a good carb too. People run 500's, but anything much above that and they're probably just running on the primaries. 2100/2150 2BBL carbs are popular too (1.08" venturi size). I think that ends up being somewhere around 300CFM 2BBL rating, and a real smooth driver.
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