Re: Carter carb tune settings
[Re: hemienvy]
#3041734
05/12/22 09:11 AM
05/12/22 09:11 AM
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Joined: Jun 2008
Posts: 3,913 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,913
usa
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Lewtot, Thank you, I take it you speak from experience ? yep. actually, i figure jet area on those afb's. what i've found on the carbs i use is the cruise side wants about .004 sqin's and the power wants about .0063sqin's of jet area on the primary side. that's real close to an edelbrock 1405 out of the box. i don't think it makes a lot of difference what jet/rod combo you use to get there. 070" cruise step on the rod with a .098" jet may work, but .060" on the power side i don't think will work. just try different things. i have found that the timing curve on those mild engines can trick you. i wouldn't use a performance curve with that cam. i've been going thru this with a stock 440 and the closer i get to a factory curve the nicer and cleaner it runs.
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Re: Carter carb tune settings
[Re: DaveRS23]
#3041739
05/12/22 09:41 AM
05/12/22 09:41 AM
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Joined: Jan 2003
Posts: 74,904 U.S.S.A.
JohnRR
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I Win
Joined: Jan 2003
Posts: 74,904
U.S.S.A.
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I would try it the way it is after verifying the stock jetting and springs under the front metering rod pistons are in place. Same thing on the ignition timing and spark plug selected and set at. The CarterBrocks have ancient calibrations and the transitions (where street cars spend most of their time) are difficult to adjust. There are simply better carb choices for your car today. Having said that, I agree with Cab, start with the original jetting for initial start up. But rather than spend too much time and some money trying to get the old CarterBrock up to snuff after the initial start up, just move on to a better and closer to optimum carb. In my experience to old Carter Competition carbs that the Carterbrocks are based on are much better carb.
running up my post count some more .
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Re: Carter carb tune settings
[Re: JohnRR]
#3041773
05/12/22 11:56 AM
05/12/22 11:56 AM
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Joined: Jun 2008
Posts: 3,913 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,913
usa
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I would try it the way it is after verifying the stock jetting and springs under the front metering rod pistons are in place. Same thing on the ignition timing and spark plug selected and set at. The CarterBrocks have ancient calibrations and the transitions (where street cars spend most of their time) are difficult to adjust. There are simply better carb choices for your car today. Having said that, I agree with Cab, start with the original jetting for initial start up. But rather than spend too much time and some money trying to get the old CarterBrock up to snuff after the initial start up, just move on to a better and closer to optimum carb. In my experience to old Carter Competition carbs that the Carterbrocks are based on are much better carb. the older sand cast carbs are better in my opinion.
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Re: Carter carb tune settings
[Re: lewtot184]
#3041977
05/13/22 11:51 AM
05/13/22 11:51 AM
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Joined: Jan 2003
Posts: 74,904 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,904
U.S.S.A.
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the older sand cast carbs are better in my opinion.
Last edited by JohnRR; 05/13/22 11:53 AM.
running up my post count some more .
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