Weber Carbies

[Trev]

 

 

RUBBISH....................................................

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BRB guys, off to PM medicine_man to tell him of his failure.

 

http://www.rollaclub.com/board/topic/7321-justins-ke70/page__view__findpost__p__145676

Edited April 5, 2011 by Trev

[Evan G]

40's are for mild to wild k motor . 50's on a 4k/5k/7k :hmm: oriteeee matee

[Trev]

changing to a 5k and i can either get a 48, 45, or 40

 

 

there wont be enough air speed to run those!

 

 

40's are for mild to wild k motor . 50's on a 4k/5k/7k :hmm: oriteeee matee

 

DERP.

 

A 45 will be happy on a worked 5k and you might get away with a 48.

[Evan G]

ref to my signature :) :yes:

[Trev]

Ummm, ok.

[Ke30 4 350]

so instead of a 45 or 48 single, twin 40s you reckon?

[ranko_87]

It all comes down to the choke size used in the carbs. I have twin 45s on a 3k (race) but they are choked to 34mm, and you can buy 32mm chokes for the 45, which is what most 40mmm DCOEs run. My dyno tuner has told me to try putting the 36mm chokes in as it will make more HP but loose down low drivability.

 

Also I have a friend with a 2L datsun which made 27 extra hp going from twin 44s to twin 50s which most people said would be to big for the 2L.

[philbey]

...some like the 40's don't hold a tune all that well....)

 

Where did you come across this piece of wisdom? I'm running Dell 40's, dynotuned and it's running as well as it was when dynoed 2 years ago. I just pipped 8.86L/100km the other day.

 

These are dellorto's, can't comment on Weber's ability to hold a tune.

 

well the kit for my car is a twin (or single) DCOE 48 side draft. what does everyone think of this, for road usage... fuel economy isn't really a factor as i don't care. i would be getting exhaust mods, porting, cams and the kit includes a new intake manifold. the kits contain

2 x 48 DCOE Weber Carburettors

 

1 x Redline Manifold to suit (12-3062)

 

1 x LP1000 performance linkage kit

 

2 x Soft mount kits

 

2 x sets manifold studs

 

1 x fuel banjo T-piece (optional)

 

and in the config i want are AUD$2,057.32

what do u reckon, good value?

 

No. Value is terrible. Waste your money if you want, but after you spend that, you'll spend another 300 bucks on the dyno. 50 bucks for fuel pressure reg. Plus you really should run a cam and extractors, thats 200-300.

 

My dellortos on manifold set me back 250, bolted them on and it was driveable. Then 300 for a tune.

 

2000 is a joke.

 

48's are unecessarily large, I run 28mm chokes in my 40's and I would like to go up to 32. To hark back evans point about airspeed, Chokes determine the airspeed, not the throat size. Putting a 48mm carb on then running a small choke is a bit ridiculous, you can get good solid performance with 40's, if you were building a serious racecar then you would probably go with 45's so you can keep your options open.

 

This is for twins.

 

so instead of a 45 or 48 single, twin 40s you reckon?

 

Might as well go with twins, but yeh you could run a single 45/48 I suppose.

 

Mine is on a worked 5K with a big ass cam. It's driveable but that's really because I have a stock flywheel, high idle, small chokes (low down response) and a fairly agricultrural 5K dizzy curve.

 

I could make more grunt by changing some of those things but it's a daily so I'm happy as it is.

[Ke30 4 350]

kewl, thanks to everyone for your help, esp you philbey

[daggers57]

cheers.

still waiting on info from the US

might look at dellortos while I wait.

[philbey]

Just a disclaimer to mate, I got my carbs and manifold at an exceptional price. It may have been 350, either way, that is a damn good price.

 

You should be able to pick up a good tidy set of DHLA 40's on ebay for 200-300 bucks, and a manifold for around 100. If you are patient there are good deals to be had. You will need to spend some money on jets etc as well, but best you let the dynotuner worry about that.

Edited April 6, 2011 by philbey

[corollaart]

Buy them on fleabay for 1500 complete with manifold etc,etc.ive got a fews sets of 40s i only want 3000 for them :lolcry:

 

Seriously 2000 gs ,mate your getting ripped off,dcoe 48s on 4k :lolcry:

 

LISTEN TO WHAT PHILBEY HAS TOLD YOU.

 

Must be school holidays ?? :bash: :bash: :bash: why do i read this sh3t.

[Ke30 4 350]

not that i want the dellorto vs weber but who (in your opinions) is the best.... no more than four posts on this plz

[jono1986]

 

48's are unecessarily large, I run 28mm chokes in my 40's and I would like to go up to 32. To hark back evans point about airspeed, Chokes determine the airspeed, not the throat size. Putting a 48mm carb on then running a small choke is a bit ridiculous, you can get good solid performance with 40's, if you were building a serious racecar then you would probably go with 45's so you can keep your options open.

 

 

Mine is on a worked 5K with a big ass cam. It's driveable but that's really because I have a stock flywheel, high idle, small chokes (low down response) and a fairly agricultrural 5K dizzy curve.

 

 

I'll be running the same setup, what size are your jets?

 

 

 

http://www.rollaclub.com/board/topic/50254-twin-side-drafts-manifolds-and-linkages/

Edited April 6, 2011 by jono1986

[ae95- wagon kid]

@ philbey, i was actually talking about the weber's not the dellorto's

 

i have personal experience with both carbies.

 

if you want to keep the price down get a pair of 40mm dellorto's of an early alfa

 

the older ones don't have emission control

 

jet it down to suit the k motor

 

and get a manifold

 

more than enough fuel for any k motor to work with and you wont have to fiddle with it and it will work well throughout the rev range.

Edited April 6, 2011 by ae95- wagon kid