TeamSwift

hey all, I was wondering what people have their dual carbs jetted at as far as mains, as well as what venturi sizes people are running.?.

I am asking because I am running dual mikuni's 40phh's on the DOHC motor, they are stock as far as i can tell.. And am wondering what these size carbs have for stock setups, and what they should be changed to..

I was also told that going down to about a 27 venturi would be better suited for this motor.. I don't know a whole lot about carbs but I have messed with them as far as getting everything in tune..Just wondering what some people are running..

Thanks, Scott

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You Just Gotta Beast It!!

bdgracia is a great guy to talk to about jetting Webers....

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Don't ask me, I don't know anything. And just because I'm a senior member, it does not mean I have as many wrinkles as ellpee. 1500+ posts and still I haven't got a clue.

Not sure for a stock engine since my engine is not stock

By the way I have weber 45DCOE.

Bolivar

What mods do you run?? what carb settings??

Thanks, Scott

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You Just Gotta Beast It!!

Oops, sorry Bolivar...for some reason I thought you were running 40's.......thus leading to the thought you might have some ballpark figure for sco44 to get started on.

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Don't ask me, I don't know anything. And just because I'm a senior member, it does not mean I have as many wrinkles as ellpee. 1500+ posts and still I haven't got a clue.

Would you or anyone else be willing to share what jetting and what sized venturies you are using?

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Mk1 t3!

My last engine with 40DCOE's was pretty much standard except for some head work.

I was running :

32 Chokes
Mains 155
Air Correctors 160
Emulsion Tubes F16
40 F8 Idle Jet
40 Accelerator Pump Jet

Only guide line. Rolling road is the only way to set up properly.

Dara

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Mk1 Gti Rally Photos @

http://homepage.eircom.net/~kellsstainless

In other words you were running 32mm Webers... lol

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Don't ask me, I don't know anything. And just because I'm a senior member, it does not mean I have as many wrinkles as ellpee. 1500+ posts and still I haven't got a clue.

is the jetting on mikuni's referred to the same way you stated yours??

Thanks ,Scott

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You Just Gotta Beast It!!

Thanks. I was just looking for a general idea of where to start.

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Mk1 t3!

my jetting on dual 40 mm mikuni's, full exaust intake porting.

12.5 mm float setting

34mm venturi

main jets- 140

pilot jets- 57.5

main air jets- 180

how does this look to carb experts, also what timing should I run?

Scott

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You Just Gotta Beast It!!

what are the beneficts from going on carbs??

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http://www.cardomain.com/memberpage/811447

I'm running twin dhla carbs with 34 mm venturi
mains 147
air 170
normal emulsion tubes
50 idle jets

( not enough power with these jets , i'm thinking maybe the venturis are too big for this engine)

I've had them on my last engine running 32mm venturi
mains 130
air 170
rich emulsion tubes
50 idle jet
(ok about the power but only in the upper rpm band above 5500)

Tomorrow i will try 30mm venturies with different jets to see if they respond better in the middle rpm range from 4000 to 7000

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G13B 1.3L 16v 115hp

any idea on the approximate cfm for the pair of carbs?

no ideea , but they'll go to over 9000 rpm on 34 mm venturi with the corect jets

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G13B 1.3L 16v 115hp