Carb rebuild kit

[Leanabel]

Hii Guys I need yours assist
i have Volvo Penta 5.7GS with Holley carburetor(2BBL), I was planning to do some service of my carburetor but I m little bit confused because I don't know which Repair Carb kit should I buy
markings on my carburetor are : 3858334 then 75004-1 and 2978
Please assist

 

[Scott Danforth]

It's a Holley 2300. Ignore the Volvo number of 3858334.

Your rebuild kit for the Holley 75004 is https://www.summitracing.com/parts/...QMoUPEDku5eCPeDIycqs5RodfqPNXJXxoC3UQQAvD_BwE

 

[Leanabel]

Thanks Scott
One more question do I need to order extra Holley Carburetor Diaphragm,50cc or that one is included in rebuild kit, because how did I understood from another treed in kit is diaphragm 30cc,,Correct me if I'm wrong.

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[Scott Danforth]

You don't have enough motor to need a 50cc accelerator pump. The kit comes with a 30cc diaphragm

You need more than 500 cubic inches to need a 50cc pump

 

[Leanabel]

Thanks Scoot you saved me a lot of time .

 

[Leanabel]

Btw Scoot do you know maybe which float goes for my carburetor because I was planning to replace him also ?

 

[Scott Danforth]

Seriously doubt you need to change float.

Never needed to change a float in 40+ years of playing with Holley carbs

Go to the Holley website and look up everything you need.

 

[Leanabel]

One more question
In this rebuild kit 703-36 for this carburetor is missing Vacuum Secondary Diaphragm which would be good to change if I'm already taking it apart..
I try to find it on Holley official page but without success.
https://www.holley.com/search/?q=75004 Vacuum Secondary Diaphragm
Do you maybe know which vacuum secondary diaphragm is for my carburetor ?

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[Scott Danforth]

Holley only has 2 vacuum diaphragms. One for externally adjustable springs, and the standard. Your rebuild kit will have it

However I doubt you need more than the bowl gasket and metering plate gasket and a can of carb cleaner

 

[Leanabel]

thanks Scott
what you thing would it be wise to change Carburetor Float Spring 20-123 ( Part Number: HLY-20-123) and Accelerator Pump Spring 20-108-10 (Part Number HLY-20-108-10) ?

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[Scott Danforth]

thanks Scott
what you thing would it be wise to change Carburetor Float Spring 20-123 ( Part Number: HLY-20-123) and Accelerator Pump Spring 20-108-10 (Part Number HLY-20-108-10) ?

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You're over thinking it. Use the kit, chase all the passages, put the carb back on and go boating

Those springs will outlast your boat 100 times over