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Author Topic: Best Carb. for 2.0  (Read 4730 times)

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Offline snakeriver_man

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Best Carb. for 2.0
« on: June 17, 2006, 12:02:40 PM »
I have a 2.0 engine that has been enhanced with Esslinger Ported\Polished head and a mild turbo cam set up. We believe to have 10:1 compression rario. I have Wiseco Pistons and 5.7" rods with floating wrist pins. I am looking for the correct CFM carb for street driving. I appreciate any opinions and information. I had talked with Demon about obtaining one of their 2-barrel carbs used on the six-shooter set up they offer but could not purchase an individual carb from them. I'd prefer a new product but I am also asking about what has worked for others.
I appreciate your advice, thanks.
Karl
snakeriver_man@hotmail.com
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Karl Schmidt

Offline goodolboydws

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Re: Best Carb. for 2.0
« Reply #1 on: June 17, 2006, 03:24:30 PM »
Check out this site.
 It lets you plug in your own numbers to determine the carb CFM required for your engine, based on engine displacement, maximum RPM anticipated and volumetric efficiency.

http://www.csgnetwork.com/cfmcalc.html
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Offline goodolboydws

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Re: Best Carb. for 2.0
« Reply #2 on: June 17, 2006, 03:36:38 PM »
You piqued my curiosity, Karl.

I put in 7500 PRM for the 122 cu. in/2000cc engine and even bumping the volumetric efficiency up to 150% of the stock figure, the carb. spec still comes in at slightly under 400cfm.

At a more realistic 6,500rpm and 115% VE figures, it would be 264cfm., which is probably still within the theoretical maximum of what the stock carb. will provide, unless I'm terribly mistaken.
 I used to have the formula for determining the maximum cfm of a given carb, based on the throttle plate diameters, but I lost it in a computer crash and haven't found it again yet.
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Pintony

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Re: Best Carb. for 2.0
« Reply #3 on: June 17, 2006, 05:50:44 PM »
Quote from: snakeriver_man on June 17, 2006, 12:02:40 PM
I have a 2.0 engine that has been enhanced with Esslinger Ported\Polished head and a mild turbo cam set up. We believe to have 10:1 compression rario. I have Wiseco Pistons and 5.7" rods with floating wrist pins. I am looking for the correct CFM carb for street driving. I appreciate any opinions and information. I had talked with Demon about obtaining one of their 2-barrel carbs used on the six-shooter set up they offer but could not purchase an individual carb from them. I'd prefer a new product but I am also asking about what has worked for others.
I appreciate your advice, thanks.
Karl
snakeriver_man@hotmail.com


 The 5.7 rod is a bit much for the 2.0????
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Offline turbopinto72

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Re: Best Carb. for 2.0
« Reply #4 on: June 17, 2006, 08:14:21 PM »
I use a 500 cfm holly 2300 with a 50cc accelerator pump.
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Offline snakeriver_man

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Re: Best Carb. for 2.0
« Reply #5 on: June 18, 2006, 10:57:13 AM »
Thanks all for your info. I will let you know what I end up with.
Pintony, you commented on the 5.7" rods as being to much for the 2.0? this was one of the suggested upgrades when working with Esslinger on building this motor. What would be your concerns? The pistons wrist pins are  deeper in the piston allowing the use of the longer rods. We used a bore scope after assembly and put the piston at TDC and then looked in the combustion chamber to verify we had clearance. I am appreciative of your opinions.
Thanks,
Karl
snakeriver_man@hotmail.com
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Karl Schmidt

Pintony

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Re: Best Carb. for 2.0
« Reply #6 on: June 18, 2006, 12:22:09 PM »
Hey snakeriver_man,
 I just do not like where the oil ring in in the wrist pin hole using the 5.7 rod.
 + the piston is only about 1.75 inches tall
 I have used the 5.2 Crower rod with good results.
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Offline snakeriver_man

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Re: Best Carb. for 2.0
« Reply #7 on: June 18, 2006, 12:47:21 PM »
Thanks for your input! Wish me luck! We have $3k invested in the motor and I don't want to trash it but I'm committed at this point. I will be talking to you guys when I am at the point of firing it up, which will be awhile.
Thanks again,
snakeriver_man
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Karl Schmidt

Offline fast34

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Re: Best Carb. for 2.0
« Reply #8 on: June 18, 2006, 08:52:24 PM »
I would also go with the 500 cfm Holley.
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