Need help with tripple carb...

[swe_crazy]

Hi all:classic:

Im "driving" a Datsun 260 z, 74 with 2 x Stromberg 175 and I will change the carbs to tripple carbs. The carbs I will use is Dellorto DHLA 40 F. Im thinking of using Tripple carburetor fuel delivery Pipe. I will make it my self using airplane Aluminum dont know if its called the same in english, its stronger aluminum. I hope u guys and girls can help me with some questions I have.

(1)What type of needle should I put on?

(2) what fuel pressure should I have to my dellortos?.

(3) I will change to a electric fuel pump and what kind of pressure as well as the volume of fuel it flows do u recommend?

Sorry for the bad english, doing my best:classic:

//Johan, from the land with blondhair and blue eyed girls..yes Sweden:D

[RIP260Z]

Hello Johan,

From what I gather from your post, you are new to Dellortos. If you intend to use these carbs, I would consider a book by Des Hamill, called "How to power tune and rebuild your Weber and Dellortos". This has easy to follow advice. Its not just a case of changing "needles". They don't have needles, but jets, air emulsion tubes, idle jets, air correction jets, etc, which all can be changed for various sizes. What size jets depends on your engine, stock/modified. It takes time to set these carbs up right, I would do some reading first. Thats what I did.

Fuel pressure for these carbs is about 3 and a 1/2 lbs. You will find your electric fuel pump will give far too much fuel than whats required, so you need to fit a fuel prssure regulator (after the pump). If your engine is standard, the standard machanical fuel pump will work just fine in terms of pressure and flow.

Also if your engine is standard, fitting a set of triples, there will be no increase in horsepower but there will be an increase of fuel comsumption. But in return there is nothing like the sound of a set of triples working!

Good luck

Ian

[swe_crazy]

Hello Johan,

From what I gather from your post, you are new to Dellortos. If you intend to use these carbs, I would consider a book by Des Hamill, called "How to power tune and rebuild your Weber and Dellortos". This has easy to follow advice. Its not just a case of changing "needles". They don't have needles, but jets, air emulsion tubes, idle jets, air correction jets, etc, which all can be changed for various sizes. What size jets depends on your engine, stock/modified. It takes time to set these carbs up right, I would do some reading first. Thats what I did.

Fuel pressure for these carbs is about 3 and a 1/2 lbs. You will find your electric fuel pump will give far too much fuel than whats required, so you need to fit a fuel prssure regulator (after the pump). If your engine is standard, the standard machanical fuel pump will work just fine in terms of pressure and flow.

Also if your engine is standard, fitting a set of triples, there will be no increase in horsepower but there will be an increase of fuel comsumption. But in return there is nothing like the sound of a set of triples working!

Good luck

Ian

Hi

I have orded the book to day, The dellortos was on a Datsun 260 z before so I think they will work on my. I will go for the standard engine for now. Thx for the reply Ian:)

// Johan

http://www.classiczcars.com/photopost/data/500/Datsunpartsforsale002.jpg

[ozone]

you guys know wher ei can get my triple mikuni 44 throtle linkage

[240znz]

Ozone,

Try www.wolfcreekracing.com for the linkage.