does this make sence

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06-21-2011, 01:04 PM

#11

fast75vega

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RACING JUNKIE

Join Date: Nov 2008

Location: Niagara Falls, NY

Posts: 965

Quote:

Originally Posted by maxpower671

Quote:

Originally Posted by fast75vega

sure your carb is jetted right for the alky? what temp you running? we were running mid 9.50's @ 160deg. ... jetted it down and got 180 temp and running 9.43's now

how many jets sizes did you move ? what carb, fuel system?

its a 850 holly that flows like 930cfm's it had 146's x 4 and went down to 142's x 4 and it ran much better. we just pulled it apart and put 140's in it and we will see this weekend :wink:

06-21-2011, 06:06 PM

#12

maxpower671

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Join Date: Dec 2005

Posts: 117

Quote:

Originally Posted by melson3086

I went from gas with 2 750's to alky with 2 850 ken Jones converted carbs A2000 pump boost ref regulator took the secondary jets from 79's to 85's both carbs figured better to start fat!

correct, better to start fat and move slowly...but still make a real change to see if it helps :wink:

i wonder if that is fat though???? Does Mr. Jones have any advice?

06-21-2011, 06:10 PM

#13

maxpower671

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Join Date: Dec 2005

Posts: 117

nice!

Quote:

Originally Posted by fast75vega

Quote:

Originally Posted by maxpower671

Quote:

Originally Posted by fast75vega

sure your carb is jetted right for the alky? what temp you running? we were running mid 9.50's @ 160deg. ... jetted it down and got 180 temp and running 9.43's now

how many jets sizes did you move ? what carb, fuel system?

its a 850 holly that flows like 930cfm's it had 146's x 4 and went down to 142's x 4 and it ran much better. we just pulled it apart and put 140's in it and we will see this weekend :wink:

looks like you're moving in the right direction....watch temps and MPH, and have fun 8)

06-21-2011, 06:43 PM

#14

fast75vega

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RACING JUNKIE

Join Date: Nov 2008

Location: Niagara Falls, NY

Posts: 965

Re: nice!

Quote:

Originally Posted by maxpower671

looks like you're moving in the right direction....watch temps and MPH, and have fun 8)

yeah.... its getting there.....it ran 9.43 @ 144.67 mph and was 180 deg when he got back to the pits. its a 1/4 mile track with 3000 feet of shut down plus a long as return road and it still was only 180 after all that.... so we jetted it down to 140's square :wink: