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01-04-2017, 12:05 PM | #1 |
Member
Join Date: Nov 2010
Location: Wadsworth Ohio
Posts: 48
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Carburetor and manifold combination
I have a 100hp engine with Offenhouser heads,headers,Edmonds dual intake.I need to buy two carbuators and am considering Stromberg 81. Would there be any down side versus 97. I just cruise and not race and looks cool with duals over single. Would I increase gas milage. Should I use streight or progressive linkage. Apreciate your advise.
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01-04-2017, 12:31 PM | #2 |
Senior Member
Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,799
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Re: Carburetor and manifold combination
My avatar roadster has 2 97s and my 32 5w has 2 81s. When jetted right I don't notice a big difference in mileage. If it gets cold in your area, and if your manifold doesn't have heat risers, the 81s can ice up like the old VWs used to. I am running my 81s on an old Eddie Meyer manifold and have seen ice on the outside of the bases. Those are small holes to be sucking all that air through. Plus the 81s are really expensive.
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01-04-2017, 12:33 PM | #3 |
Senior Member
Join Date: May 2010
Location: Encino California, near Burbank
Posts: 935
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Re: Carburetor and manifold combination
Stromberg 81s are a popular option in pairs where there is no great need or desire for much carburation. They look just like the other three bolt Strombergs for Ford. There may be some surprises such as sensitivity to accelerator pump volume traceable to the intake manifold. Stumbling and flat spots resulting. Most advice for double carbs jump to the straight linkage, but I had a formerly twin manifolds that thrived on a single carb such as my single adapted slingshot which I regrettably let go. Progressive linkage would not be the same kind of problem with the dual plenum. Not your situation.
Fuel mileage, hard to get trustworthy information there. Don't forget the much more affordable Holley 92 for your small carb needs. Good Luck: Fred A Last edited by Fred A; 01-04-2017 at 12:35 PM. Reason: post script |
01-07-2017, 11:53 AM | #4 |
Member
Join Date: Nov 2010
Location: Wadsworth Ohio
Posts: 48
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Re: Carburetor and manifold combination
Thank you deuce roadster and Fred A for your good thoughts.I have opted for two 97s and st linkage. Thanks also to Ken Isidor who Emailed me offering advise and carbs.
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01-07-2017, 12:00 PM | #5 |
Member
Join Date: Nov 2010
Location: Wadsworth Ohio
Posts: 48
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Re: Carburetor and manifold combination
Thank you deuce roadster and Fred A for your good thoughts.I have opted for two 97s and st linkage. Thanks also to Ken Isidor who Emailed me offering advise and carbs.
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01-07-2017, 03:24 PM | #6 |
Senior Member
Join Date: Jul 2010
Posts: 2,593
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Re: Carburetor and manifold combination
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Do research before spending money. Good luck, Martin. |
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