[Kris.sierra]

hi, I'm looking to upgrade the carby in my sierra, it has the 16a vitara engine fitted already but its currently running of the old 1.3 carb. i have been looking into a 32 36 weber and a few others but am unsure of which to go for for performance and weather it will fit under the bonnet, any help on this would be apprieciated

thanks

[SuziBlu]

IF you do not want extreme angles, a webber is simply stunning, it does have extreme angle issues but.

Id suggest, properly tuned, upgraded exhaust, ignition, you will look at (seat of pants), a good 20-25% improvement over stock.

I am about to rip off the carb and inlet manifold and get rid of the inlet obstructions from the old aisin carb, I am unsure of power gains here, but am led to believe impressive.

[Kris.sierra]

iv had the carb done by a carby specialist, iv just serviced it there yesterday along with new rotor ,cap, leads n plugs. the exhaust is still of the origianal 1.3 so it could do wif an upgrade, i dont think it will be used for too many extreme angles, mostly beach and the odd track or 2 wen i get a chance to get out there

[SuziBlu]

The stock carb is a bit small for the 1.3, let alone the 1.6l with the 1.3l carb, also IMO a big thing on the to do list is piss off the choked up tiny exhaust, get a set of extractors an a good 2" system.

I do tend to go overboard in the pursuit of power, unto going to redline oils thru-out, quite expensive, very light fully synthetic, less power loss.

[Choppy]

Kris.sierra wrote:

hi, I'm looking to upgrade the carby in my sierra, it has the 16a vitara engine fitted already but its currently running of the old 1.3 carb. i have been looking into a 32 36 weber and a few others but am unsure of which to go for for performance and weather it will fit under the bonnet, any help on this would be apprieciated

thanks

i was in exaclty the same postion.
i have a webber on my 1.6l and it made a shit load of difference onroad, i've also used mine up the beach a fair few times and the difference is definatly noticable.
however as stated and experienced they do have starving issues on angles, little bit more gas to keep it going is all thats required, i've had very few issues with mine 4x4ing. but still definately not as good as the starndard carb. there also prone to starving on real bumpy/ bouncy tracks so combined with an upphill climb and some bumps not soo good.

All in all though i love mine as i do soo much onroad driving and not really any extreme tracks when im off road. In all honesty if i was to do more 4x4 id just grap a reco'd vitara carb and maybe get a manual choke.

it all fits under the bonnet as well, theres a picture of mine here:
http://www.auszookers.com/index.php?nam ... 0&start=30

[Choppy]

SuziBlu wrote:

The stock carb is a bit small for the 1.3, let alone the 1.6l with the 1.3l carb, also IMO a big thing on the to do list is piss off the choked up tiny exhaust, get a set of extractors an a good 2" system.

I do tend to go overboard in the pursuit of power, unto going to redline oils thru-out, quite expensive, very light fully synthetic, less power loss.

NO NO i agree , i have extractors and exhaust as well, definatly worth it.
with a new carb, extractors and exhaust you wont be able to handle the power

[SuziBlu]

I am trying to find out a bit more about this carby before I take the plunge, but it sounds like the go.

I have taken the 32/36 off suziblu and put it on my new toy, bloody hell has it made some difference, you get used to things, an suziblu has been running hot as for ages, so it became sort of, normal, replacing the aisin with the webber on the new girl, woohooo.

Its lower geared than suziblu, and it seriously takes off now, I find in 5th it pulls harder than when in 4th with the aisin, and im looking for 6th as it pulls so well.

Suziblu will get the bigger better carb as she is just a full on toy, but, I have heard or rather read these are not good, but no-one says why, maybe its other sellers rubbishing something they cannot get.

[lump_a_charcoal]

Corolla 3k or 4k?

[SuziBlu]

Im just not keen on the aisin carbys Lumpa, they are complicated things that are hard to work on, the webber is like the old days, you can work on them in the dark, with a blindfold on, pissed as a chook.

There are more springs on an aisin carby than a trampoline.

[joeblow]

SuziBlu wrote:

IF you do not want ANYTHING OTHER THAN ROAD GOING ANGLES, a webber is simply stunning, it does have ANYTHING OTHER THAN ROAD GOING ANGLE issues but.

fixed and fixed.

SuziBlu wrote:

Id suggest, properly tuned, upgraded exhaust, ignition, you will look at (seat of pants), a good 20-25% improvement over stock.

more like 10%.









get a VITARA MIKUNI...

[Built4thrashing]

webers are fine if tuned and set up properly. A few mods are required to revent the fuel bowl so stop the flooding issues.


Try a 4k corolla carby on the 1.6. very easy swap onto a 1.3 and is alot better to play with. or you could try a niki carby from a gemini. Dank used to use one before he did his motor upgrade.


B4T

[SuziBlu]

[JrZook]

joeblow wrote:

get a VITARA MIKUNI...

Hey Joe, obviously you swear by these and have done a few conversions, hows about a vaccume line diagram or a few pics of these carbs? Cant find much descent info on them at all, not even a proper manual

Dan

[royce]

few guys have rejetted a sierra carb and they work well, I dunno how so many people have dramas they are a great carb if you leave them alone and hook them up right

[jonno_racing]

i know rhett had big sucess with easy single point efi? ,something to look in2..

[nissvit]

Kris.sierra wrote:

iv had the carb done by a carby specialist,

so did your specialist take the time to re-jet it so it runs properly?

a stock 1.3 carby on a 1.6 engine will make the engine run a bit lean and will feel doughy,
By re-jetting a 1.3 carby on a 1.6 we got decent torque (by seat of pants dyno's ) and it now pulls through the full rev-range.

There is a thread on here somewhere about it..

[Reubs]

nissvit wrote:

Kris.sierra wrote:

so did your specialist take the time to re-jet it so it runs properly?

My experience with a carby specialist and my G16 with G13 carby was they took a big 141 size jet out and put a (standard?) 105 size jet back in (and gave me the big jet back) and it ran better through the upper rev range and about the same at lower rpm after they plugged up a gas analyzer and 'tuned' it. It definitely used 10% more fuel on the highway afterwards - 10l/100km instead of 9l/100km so it isn't running lean...

So, is there some adjustment or mechanism to adjust fuel delivery without re-jetting the carby?

[JrZook]

Reubs wrote:

So, is there some adjustment or mechanism to adjust fuel delivery without re-jetting the carby?

Nope. Only actual adjustment is the idle mixture screw.

Dan