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Joined: Mar 2009
Posts: 293
Backyard Mechanic
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OP
Backyard Mechanic
Joined: Mar 2009
Posts: 293 |
Does anybody know what the CFM of a 1928 chevy RAKX-O carburetor is???
I looked in the repair manual and in the detailed specs manual and found that it's not listed in either manuals.
Keeping vintage Chevy alive.
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Joined: Dec 2001
Posts: 11,162
ChatMaster - 10,000
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ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162 |
I don't know what the CFM rating for the RAKX-O carb is but a Four cylinder is around 170 CI? if so at 3500 RPM it should require around 200 CFM or less.
Life's a long winding trail, love Jesus and ride a good horse!
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Joined: Aug 2004
Posts: 3,469 Likes: 48
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Aug 2004
Posts: 3,469 Likes: 48 |
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Dec 2001
Posts: 11,162
ChatMaster - 10,000
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ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162 |
I guess that means you won't need a 200CFM carb?
Life's a long winding trail, love Jesus and ride a good horse!
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Joined: Aug 2004
Posts: 3,469 Likes: 48
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Aug 2004
Posts: 3,469 Likes: 48 |
Several years ago my buddy and I decided to "soup up" a Model T F**d. We had no money to buy fancy speed equipment but my friend is a capable amateur machinist.
We installed a Model A crankshaft and a OHC cylinder head from a 2300 F**d Pinto. A pair of webers from a Fiat Spyder provided the fuel.
We static balanced the moving parts and it ran with no noticeable vibration.
I once saw 4000 RPM on the tach.
Hmmm. If a 4 cylinder Chevy head makes a Model T go fast and a Pinto head makes a Model T go faster, would a Pinto head make a 4 cylinder Chevy go.....
Mike
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Jan 2011
Posts: 28
Grease Monkey
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Grease Monkey
Joined: Jan 2011
Posts: 28 |
Does anyone know the float setting for this carb? Can anyone show a picture of what the needle looks like? Mine seems rounded off, should it be pointed?
Thanks.
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
The float is set at 31/64" The needle can be rounded if it is in a seat with the larger center hole. There are several needle/seat combinations that will fit. As long as it seats the needle will be fine.
How Sweet the roar of a Chevy four!
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Joined: Jan 2011
Posts: 28
Grease Monkey
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Grease Monkey
Joined: Jan 2011
Posts: 28 |
If the fuel bowl fills so full that it pours over the top and seeps through the gasket and/or fills the intake air tube, I can assume that it is not seating, correct? Could this cause it to not start?
Sorry to the original poster for hijacking the thread! I will creep back into the shadows and watch silently again now...
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
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Posts: 19,758 Likes: 64 |
That may be your problem or the float is sinking (leaking), the seat is loose, gasket bad or electric fuel pump with too much pressure or ?
How Sweet the roar of a Chevy four!
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