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04-30-2020, 07:58 PM | #21 |
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Re: Primary carb- Front or back?
Ya, to clear the generator with a poor compromised design.
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04-30-2020, 07:59 PM | #22 |
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Re: Primary carb- Front or back?
Ronnieroadster,
Some people will argue with a stump! |
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04-30-2020, 08:07 PM | #23 | |
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Re: Primary carb- Front or back?
Quote:
Ahh, the wisdom of Ol' Ron....The most astute response in this entire thread....
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 Last edited by petehoovie; 04-30-2020 at 08:43 PM. |
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04-30-2020, 08:13 PM | #24 | |
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Re: Primary carb- Front or back?
Quote:
Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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04-30-2020, 08:38 PM | #25 | |
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Re: Primary carb- Front or back?
Quote:
The pictured "regular" dual intake is for pre-49 where the engines are "shorter" and the forward carb base is positioned to allow stock generator location. If you look at most '49-up dual intakes you'll see the carbs are more evenly positioned as the generator sits farther forward because of the "longer" water pumps and pulleys. One exception is the Edmunds which has very "strange" imo carb placement, but I ran one on my stock 239" '51 with straight 94 linkage with no issues. I eventually switched to an Edelbrock dual just because of better looking carb placement. I agree with Ronnie that straight linked dual carbs are the best way to go. If you take the time to make sure the carbs are the same and synced, you'll find good performance and economy. Last edited by V8 Bob; 05-01-2020 at 06:25 AM. |
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04-30-2020, 09:16 PM | #26 |
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Re: Primary carb- Front or back?
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Al |
04-30-2020, 09:57 PM | #27 |
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Re: Primary carb- Front or back?
"Jockyshift41: - That manifold is not what I am talking about; it HAS to be run with straight linkage. To the rest of you, the engineers that developed these manifolds and the related progressive linkage systems they sold with them must have known something. On this one, I guess I'm just have to figure it out for myself. I'm kinda like that.
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05-01-2020, 09:24 AM | #28 |
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Re: Primary carb- Front or back?
Ronnie recently set up the 97's on an Almquist intake, straight linkage, modified gen mount on right cyl head,59AB. Runs like a rapxd ape. He IS a master.
Paul in CT |
05-01-2020, 10:22 AM | #29 |
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Re: Primary carb- Front or back?
On my 39 EAB. I’m running dual edelbrock 94s rebuilt by CharlieNY (power valve sealed). Offy intake, direct linkage, car runs great.
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05-01-2020, 07:02 PM | #30 |
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Re: Primary carb- Front or back?
I've been called many things in my life but "Astute" Is a first, now i havee to look it uo to see what it means?? Thanks anyway sounds good.
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05-01-2020, 08:05 PM | #31 |
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Re: Primary carb- Front or back?
'Profound' applies as well, Ron....
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
05-01-2020, 11:40 PM | #32 |
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Re: Primary carb- Front or back?
Wow, opinions are flying every which way. I'm tinkering on a dual Holley setup for a hotrod project. I normally post these bigger project so we can all learn something but some times a hotrod project can be looked down upon. Looks like I have about the same setup as Jockeyshift41. I'm building a Canadian 8BA, have Merc crank and EAB heads, probably end up .060 over. I'm looking at cams, don't want something too radical, want good drive-ability. I've been watching videos from Charlie at Vintage speed, he swears by progressive linkage.
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05-02-2020, 07:03 AM | #33 |
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Re: Primary carb- Front or back?
For what it's worth, I tried progressive on one of those offset type manifolds and found it more easy to make it work well when I switched to running both carbs at the same time.
same jets in both carbs, functioning but lower number power valves. Re the suggestion to block off the rear carb. Actually I think this would be a good idea in this case, purely for testing purposes. I'd remove the rear carb and just run one in the central location. Get it dialled in and running perfectly. Stock jets, 51s and a stock power valve. I'd then swap in the other carb with exactly the same spec. get it dialled in and running perfectly. Only by eliminating the twin progressive factor will you prove that the engine is running well. Condensor? Sticking valves? plug wires? get it running like gangbusters on one carb first. It will probably go quite well. Then, try fitting both carbs. Leave the settings as stock (to start with). Set them up running in parallel. (Not progressive). If there is an issue, address it. But make sure both carbs are exactly the same. From my experience, they might want slightly lower number power valves, but definitely not NO power valves. If it runs better with them both on then great. If not, well, it's up to you. But definitely get it running strong with one carb first, to eliminate all the "noise" that may be effecting your results. Mart. |
05-02-2020, 03:21 PM | #34 |
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Re: Primary carb- Front or back?
"Art Newland" - Even I have gone on record saying that you shouldn't even consider using anything but straight linkage on a manifold like that. I have to believe that the only reason Charlie Price recommends progressive linkage on one of those is because he makes more money on them than he does on a simple straight linkage setup.
"Mart" - Thanks for your contribution. It's valuable to hear from someone who has actually tried it. (I'd like to do some experimenting myself, but I've never really liked those things and would't spend the money.) |
05-03-2020, 08:10 PM | #35 | |
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Re: Primary carb- Front or back?
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05-04-2020, 08:27 AM | #36 |
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Re: Primary carb- Front or back?
Running a Crab distributor from Bubba. Also a 3/4 Schneider cam from Reds Headers. NGK B-6L spark plugs. Echlin coil with internal ballast. Taylor 8mm suppression core wires. Hotton-Sullivan aluminium heads. 4" crank....Arias 3 ring forged pistons.
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05-04-2020, 09:42 AM | #37 |
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Re: Primary carb- Front or back?
Have you had trouble w/ vacuum brake/ set-up? I have about 15"Hg but cant seem to get timing down pat. At WOT I have knock and low power. If I retard, no knock but even less power. I have tried setting crab at middle mark and adjusted brake w/ little effect. Crab was built by Bubbas. Currently running carbs sync'd.
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05-04-2020, 12:21 PM | #38 | |
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Re: Primary carb- Front or back?
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