Secondary 9 Super 7® 3-Bolt 2-Barrel Carburetor, Plain Finish

#91511656

Secondary 9 Super 7® 3-Bolt 2-Barrel Carburetor, Plain Finish

Name: Secondary 9 Super 7® 3-Bolt 2-Barrel Carburetor, Plain Finish
Brand: Speedway Motors
SKU: 91511656
Price: 313.99 USD
Availability: InStock
Rating: 4.7 (3 reviews)

3 Reviews

2 Questions

These 9 Super 7® carburetors are built with 100% all new parts to ensure hassle free performance
Base assembly is aluminum instead of the original cast iron material to allow for cooler fuel temps and better fuel efficiency
The original troublesome needle and seat has been replaced by a Grose-style fuel inlet valve to better cope with higher fuel pressures and improved high speed running

Finish:

Plain

Chrome

Carburetor Type:

1-Secondary

1-Primary 2-Primary 1--Primary / 2-Secondary 2--Primary / 4-Secondary2-Secondary

$313.99

/each

In Stock

Quantity

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Product Summary

Universal Fit, 2-Barrel Carburetor Barrels, 184 CFM CFM

These 9 Super 7® carburetors are built with 100% all new parts to ensure hassle free performance
Base assembly is aluminum instead of the original cast iron material to allow for cooler fuel temps and better fuel efficiency
The original troublesome needle and seat has been replaced by a Grose-style fuel inlet valve to better cope with higher fuel pressures and improved high speed running
A modern nitrophyl float and neoprene gaskets are used to accommodate modern fuels
The accelerator pump and jets have all been faithfully retained and accept standard Stromberg parts

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Key Specs

Carburetor Barrels	2-Barrel
Fuel Type	Gasoline
Choke Type	No Choke
CFM Range	100-199 CFM
CFM	184 CFM

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Installation Details

Determining the Best Performance Carburetor For Your Application

Installation Tips

Features .045" main metering jets and a number 65 power valve, which is the same as a stock 97 carb.
Replacement jet access plug gasket use # 91011542, replacement needle & seat gasket use # 91011543.
Includes base gasket.
The 9 Super 7® will operate suitably with fuel pressures ranging from 1-1/2 psi to 4 psi, with a desired setting of 2-1/2 psi to 3 psi. Fuel pressure from 4 psi to 7 psi will cause the carburetor to run excessively rich and may cause flooding. Flooding or leaks caused by excessive fuel pressure do not indicate a faulty carburetor. A fuel regulator such as # 560-58500 must be utilized in order to keep proper fuel pressure at the 1-1/2 to 4 psi range.
There are no provisions for a vacuum advance line. Ford & Mercury engines 1949-1953 using stock distributors will need an alternative place to connect the vacuum line.
Our independent tests produced these flow numbers:
- 3" of Vacuum - 60 CFM
- 10" of Vacuum - 110 CFM
- 15" of Vacuum - 136 1/2 CFM
- 28" of Vacuum - 184 CFM

Learn more about setting up 3 x 2 carbs using the 9 Super 7® Carb in Street Rodder Magazine's tech article, Speedway Motors Stromberg 97 - Tri-Power In Under An Hour.

See what other industry experts are saying about the 9 Super 7® here.

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Speedway Motors 91511656 Details

Speedway Motors now offers a reproduction version of one of the most popular carburetors ever used, the original Stromberg 97! Original equipment on '30s and '40s cars and trucks, the Stromberg 97 has long been favored by flathead hot rodders and racers who realized the performance qualities of this timeless fuel supplier.

For years customers have been either putting up with poor idling multiple carburetor set-ups or spending hundreds of dollars converting the secondary carburetors so they did not have to idle circuits. Now Speedway Motors is offering our popular 9 Super 7® two barrel "secondary" carburetor with all that work already done. No more wasted money!

Speedway Motors has incorporated all of the improvements shown above while maintaining the carburetor's original look. Features such as the accelerator pump, main jets and cosmetics have all been faithfully retained. Additionally, each carburetor is individually flow tested and inspected for leaks. Perfection is the result!

Aesthetically, the 9 Super 7® Carb is nearly identical to the stock unit, minus the large 97 logo that appeared on the side and the patent numbers found on the float bowl area. Upgraded internal parts include; the float, needle, and seat. Jetting and power valve settings remain as they were for the original 97 carbs as well as the cfm and vacuum specs.

The other similarity that the 9 Super 7® shares with the original 97 is the setup and tuning necessary to yield a well-running machine. While perhaps not as simple as bolting on a single four-barrel, the 9 Super 7® makes setting up a multiple carburetor induction system easier than when Strombergs were available new. All that's required is an intake, a linkage system, a Uni-Syn syncing tool, and a little patience. Be sure to include the Primary 9 Super 7® when installing multi-carb setups. Our 3 Carb kits come with one primary carburetor and two secondary carburetors while the 2 Carb kits are both primary carbs. See our Multiple Carburetor Tech Tip for more information on using the 9 Super 7® in a 2x2 or 3x2 carb set-up.

All-new tooling for crisp, flawless castings
New aluminum base assembly allows for cooler fuel temps and better fuel efficiency as compared to the original cast iron design
Stainless steel screws and hardware
Accelerator pump, and jets have all been faithfully retained and accept standard Stromberg parts
Features original Stromberg 0.97" venturi diameter
Modern Nitrophyl float and Neoprene gaskets
Original troublesome needle and seat replaced by a Grose-style fuel inlet valve to better cope with higher fuel pressures and improved high speed running
Will not stick or dribble like the old Viton-tipped needle and seat setups
Grose-style jet valve won't corrode in modern fuel, something the original needle and seat units can't do
Comes with a No. 65 power valve and 0.045" main jets, identical to the stock 97
Extended brass throttle shaft to simplify multi-carb linkage
Special base plate with no idle circuits or choke linkage
Special butterflies and shafts installed
Works best with progressive linkage
Idle only off the center or main carburetor
No more plug foul

Note: Not recommended for use with Ethanol fuels.

Guides & Documents

Determining the Best Performance Carburetor For Your Application

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Speedway Motors 91511656 Specifications

KEY SPECS
MFG. Part #	91511656
Brand	Speedway Motors
Carburetor Barrels	2-Barrel
Fuel Type	Gasoline
Choke Type	No Choke
CFM Range	100-199 CFM
CFM	184 CFM
Carburetor Flange Type	2-Barrel 3-Bolt
Finish	Natural
Material Type	Cast Aluminum
Color	Silver
Secondary Type	Mechanical
Fuel Inlet Type	Single
Gasket(s) Included	Yes
New or Remanufactured	New
Throttle Linkage Type	Progressive
Supercharged Application	No

GENERAL
Sold in Quantity	Each

Ratings & Reviews

4.7

3 Reviews

Overall Assessment

Customers appreciate the product's high-quality, practical features, and pleasing aesthetics. The product's installation process is described as simple and hassle-free. The moving parts are considered to be in good condition, though some customers suggested improvements for the center carburetor's operation. Overall, the product is highlighted for its excellent performance, outshining its competitors. Although there were some minor issues, users expressed satisfaction and have recommended our product due to its superior qualities.

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4.7

3 reviews

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Yes I would buy this product again if needed

5.0

2 years ago

Larry

Clarksville TN

Verified

I use a secondary carburetor on my 48 Ford and it works good

Would Recommend

pretty sweet

4.0

10 years ago

badvolvo

tonganoixe ks

Verified

Had an issue with gas leaking. Speedway quickly sent me a replacement. I used these on the tri power small block set up. overall, very pleased.

So far so good.

5.0

11 years ago

RockinRodder

Upper Michigan

Verified

Not having used them yet...I'm no judge of performance...but they look good....installation is a breeze. All the moving parts look fine...albeit the center carburetor seems to require a little more effort to operate the throttle linkage than I think it should. The center carburetor has no vacuum port for a vacuum advance and no choke linkage to operate the choke via a cable run inside the vehicle. Those things, in my opinion need to be addressed. So far, they look great, like three soldiers, sitting on the bench waiting to do their duty.

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

2 Questions • 2 Answers

Sort Questions

I have a 1950 F1 Will this work on the stock intake???? Will the stock air filter {oil bathed) work also???

by biker 42

• 11 years ago

1 answer

View Answer

Hi, Do these have vacume power valves or mechanical and would they suit a stock 351 ford cleavland with triple set up, Thanks William

• 14 years ago

1 answer

View Answer

2 of 2 questions shown