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Carburetors

Holley 135-5 30cc Accelerator Pump Diaphragm Gas

Holley 135-5 30cc Accelerator Pump Diaphragm Gas

Item # HLY135-5

Details

GTIN Code:
090127026892
MFG. Part #:
135-5
Fuel Type:
Gasoline
Sold in Quantity:
Each

Info

Holley accelerator pump diaphragms are available in 30cc (427-1355) or 50cc (427-1357) sizes. For use with gasoline only.

$8.95
Details
Holley Alcohol Needle & Seat, .150 Inch

Holley Alcohol Needle & Seat, .150 Inch

Item # 916-11410

Details

GTIN Code:
090127465738
Thread Pitch:
3/8-32 OD
Thread Pitch (2):
1/4-32 INSIDE

Notes:

INCLUDES O-RING. 200-009 .070 X .208 ID
Sold in Quantity:
Each

Info

With a .150" seat, this needle and seat assembly is about as big as you can get. This needle design is very responsive to changes in flow rates and has excellent sealing capabilities. "Viton" needle and seat is resistant to dirt and provides superior seal when closed. Size .150" for alcohol carbs. Gasket not included.
.150" seat
Adjustable
Stainless Steel
Compatable with racing fuels that contain benzine, acetone and alcohol
Gasket not included

$17.95
Details
Holley Carburetor Gas Needle and Seat, .110 Inch

Holley Carburetor Gas Needle and Seat, .110 Inch

Item # 427-6504

Details

GTIN Code:
090127075029
Notes:
INCLUDES O-RING 200-009 .070 X .208 ID
Sold in Quantity:
Each

Info

"Viton" needle and seat is resistant to dirt and provides superior seal when closed. Size .110" for gas carbs. Gasket not included

$8.95
Details
Holley 37-1543 2300 2 Barrel Carburetor Rebuild Fast Kit

Holley 37-1543 2300 2 Barrel Carburetor Rebuild Fast Kit

Item # 427-371543

Details

MFG. Part #:
37-1543
Gasket(s) Included:
Yes
Fuel Type:
Gasoline
Material Type:
Gasket Material
Sold in Quantity:
Each

Notes:

Includes a 30cc and 50cc accelerator pump and a 6.5 power valve

GTIN Code:
090127437117

Info

These kits are ideal for a quick refresher of your two barrel Holley carb. Each kit includes step-by-step instructions and a detailed tuning guide.

Kit includes one 30cc and one 50cc accelerator pump (black material for gas) and one 6.5 power valve.

427-371543 Instructions (PDF)

Notes

This rebuild kit will service the following Holley Carburetors

R4412     R4412-1   R4412-2   R4412-3   R7448     R9647
R84412   R87448 

$28.97
Details
Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit

Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit

Item # 427-371544

Details

MFG. Part #:
37-1544
Fuel Type:
Gasoline
Sold in Quantity:
Kit
GTIN Code:
090127437131

Info
These kits are ideal for a quick refresher of your four barrel Holley carb. Each kit includes step-by-step instructions and a detailed tuning guide. Fits 650 CFM and 750 CFM carburetors.

Notes

This rebuild kit will service the following Holley Carburetors

R4295      R4776      R4776-1   R4776-2   R4776-3   R4776-4
R4776-5   R4776-6   R4777      R4777-1   R4777-2   R4777-3
R4777-4   R4777-5   R4777-6   R4778      R4778-1   R4778-2
R4778-3   R4778-4   R4778-5   R4778-6   R4779      R4779-1
R4779-2   R4779-3   R4779-4   R4779-5   R4779-6   R4779-7
R4780      R4780-1   R4780-1   R4780-2   R4780-3   R4780-4
R4780-5   R4780-6   R4781      R4781-1   R4781-1   R4781-2
R4781-3   R4781-4   R4781-5   R4781-6   R4781-7   R6895
R8156      R8162      R8804      R9379      R9380      R9381
R9645      R80570    R80572     R80573    R80574    R80575
R80576    R80577    R80670     R80670-1 R80770    R80770-1
R80776    R80777    R80778     R80779    R80780    R80781
R80870    R81570    R81670     R81770    R84776    R84777
R84778    R84779    R84780     R84781    R83670    R83770
R85670    R85770    R86670     R86770    R76650    R76750 

Notes

If this is needed for an alcohol application different accelerator pumps with be needed. Includes (2) 30cc pumps, (1) 50cc pump, and (2) 65 power valves

$40.95
Details
Holley 37-1546 4150HP 4 Barrel Carb Rebuild Fast Kit

Holley 37-1546 4150HP 4 Barrel Carb Rebuild Fast Kit

Item # 427-371546

Details

MFG. Part #:
37-1546
Fuel Type:
Gasoline
Sold in Quantity:
Kit
GTIN Code:
090127437865

Info

Holley Fast Kits are ideal for a quick carburetor freshening and include a detailed tuning guide and step-by-step instructions. For Holley Model 4150HP carburetors. This includes 650 CFM and 750 CFM four barrel carburetors.
Gaskets
O-Rings
Pump Diaphragm
Needle & Seat
Power Valve 
Step-By-Step Instructions
Detailed Tuning Guide

Notes

This rebuild kit will service the following Holley Carburetors

R80496     R80496-1   R80497     R80507     R80507-1   R80508
R80508-1  R80509      R80509-1  R80511     R80511-1   R80512
R80513     R80513-1   R80514     R80514-1  R80519      R80528
R80528-1  R80529      R80529-1  R80531     R80535      R80535-1
R80801     R80802      R80803     R80540     R80540-1   R80541
R80541-1  R80542      R80542-1  R80674     R80675      R80676
R82750     R82751      R82651 

Notes

If this is used for an alcohol application different accelerator pumps will be needed. Includes (2) 30cc pumps, (1) 50cc pump, (2) 35 power valves, 2 needle/seat and (2) 65 power valves.

$53.95
Details
Holley 37-1542 4160 4 Barrel Carburetor Rebuild Fa

Holley 37-1542 4160 4 Barrel Carburetor Rebuild Fa

Item # 427-371542

Details

GTIN Code:
090127437124

Info

These kits are ideal for a quick refresher of your four barrel Holley carb. Each kit includes step-by-step instructions and a detailed tuning guide.

Notes

This rebuild kit will service the following Holley Carburetors

R1848-1    R1849      R1851-2    R1850-3    R1850-4   R1850-5
R1850-10  R1850-11  R1850-12  R1850-13  R3310-2   R3310-3
R3310-4    R3310-5   R3310-6    R3367       R3370      R3810
R3811       R4235      R4236       R4452-1    R4548      R6270-1
R6291       R6299-1   R6520       R6619-1    R6909      R6919
R6946-1    R6947      R6979       R6979-1    R6989      R7009-1
R7053-1    R7154      R7413       R7850       R7985      R7986
R7987       R8004      R8005       R8006       R8007      R8181
R8207       R9002      R9040       R9210       R9219      R9254
R9626       R9776      R9834       R9834-1    R9834-2   R9834-3
R50399     R50399-1 R80431      R80432     R80450    R80451
R80452     R80453    R80454      R80457     R80457-1 R80457-2
R80460     R80551    R81850      R83310     R83310-1 R83311
R83312     R89834 

$29.95
Details
Holley Power Valve

Holley Power Valve

Item # 425-125-SIZE

Details

GTIN Code:
090127122228

Info

Standard flow. Available sizes include: 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5 and 10.5 in hg.   For example 427125-45, 427125-35 etc.
High flow 1 Series (big window valve) for alcohol. Available sizes include: 2.5, 3.5, 4.5, 5.5, 6.5, 8.5, 10.5 in hg.   For example 427125-145, 427125-135 etc.
Application

Tech Tip: 
Engine vacuum will hold the valve closed until vacuum drops below the cracking point, measured in inches of mercury (in hg) at which time, the valve will open and enrich the fuel mix.
It is quite common to put very low numbers in multi carb systems. The reason is that if standard single carb valves are used, it will cause the engine to be overly rich. When you are at a part throttle cruise at 55 mph (say, with a 12 in hg of manifold vacuum) and you squeeze into the throttle to go up a hill or pass a car, the manifold vacuum drops (say, down to 7 in hg) and all three power valves open. Normally, this will make the engine soggy & rich, since it has three times the fuel enrichment that it needs.
People will put in the lower power valves to delay the enrichment until nearly Wide Open Throttle. At WOT, the engine can normally consume the additional fuel without puffing black smoke or fouling plugs. The problem with putting -45 power valves in, is that it defeats the purpose of a power enrichment system. The enrichment system is designed to provide a slight increase in fuel flow as power requirements increase. If you install -45 power valves and they do not open until WOT, you lose the benefit of adding just a little bit of fuel when you squeeze the throttle a little.
A better way is to put power valve plugs (or very low numbers) in the front and rear carbs and use a standard power valve in the center carb. The best way is to put restrictors (PVCR or power valve channel restriction, which are small lengths of stainless steel piano wire) in all three carbs, which limits the amount of fuel that is added, not when it is added.

$9.95
Details
Holley 135-7 50cc Accelerator Pump Diaphragm

Holley 135-7 50cc Accelerator Pump Diaphragm

Item # HLY-135-7

Details

GTIN Code:
090127026915
MFG. Part #:
135-7
Fuel Type:
Gasoline
Sold in Quantity:
Each

Info

Holley accelerator pump diaphragms are available in 30cc (427-1355) or 50cc (427-1357) sizes. For use with gasoline only.

$14.95
Details
Holley 135-10 30cc Accelerator Pump Diaphragm, Alcohol

Holley 135-10 30cc Accelerator Pump Diaphragm, Alcohol

Item # 427-13510

Details

GTIN Code:
090127120484

Info

Holley GLFT 30cc accelerator pump diaphragm for use with all alcohol base fuels.

$9.95
Details

About B2 Race Components

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