Outer Limits 4x4 Board

just wondering if anyone has heard of a 180 holly carby fitting to a sierra i saw it on a website and was just wondering if the holly had the same problem as the weber in stalling on up hill climbs and roughly the price and any problems ppl have had installing them thanks
Azza

Holleys are even worse on hills.
OK if performance is your aim but not exactly fuel efficient.

I haven't driven a holley powered suzuki, but I have driven a holley powered rangie and it was a pig in the bush. Depending on what way round you mounted the carb, you could either have it stall out going uphill or down hill.

I'm sure there are all the workarounds to fix the problem, but really, unless you have made MAJOR gasflow changes to the 1.3 ( cam, exhaust, porting, compression ratio etc) the biggest likely change is that you will just get poor fuel consumption, possibly poor cold starting and might pick up some midrange throttle response, but odds are, it'll be running rich.

I'm sure the holley will be able to supply plenty of fuel at the top end, but as I said, unless you have major changes in the motors ability to breathe, this will be a waste.

So what problem with the factory carb were you trying to fix with the holley?

*Rant on* (not having a go at your strightforward question, but htis is in response to all the run XYZ carb replies you'll get)

In every thread about playing with carbs on sierras, I have yet to see ANYONE run one with a wide band 02 sensor or with dyno sheets to prove the fuelling and power of the new carby. Its all seat of the pants, and the following points are true of seat of the pants testing:

The more noise it makes, the faster it goes
The more you spent, the faster it goes.
Increases in power of at least 10% are undetectable in "seat of the pants" testing... how much power have you gained again?

*rant off*

Steve.

no problem jsut looking to start to upgrade my engine ive spent to much on things that dont make the thing any better (sound system spotties) and i want to be able to have some more horses under the foot jsut looking for a cheap side of things tho

Just make certain that its tuned properly now...

Things like plugs, valve clearances etc etc.. all terribly boring but it does matter.

Why not look at fuel injection, either from a motor sway, or retro-fitting vit single point injection to a 1.3l motor. Major improvement off road, cold start perfect every time, less emmissions, and a pretty simple system to understand and work on.

Layto....

I was sure Holley 180 was a "copy"ofthe weber 32/36 but apparently only some are. I fits the same as the weber read the weber threads on here, no mater what others say there IS a definate power increase throughout the range. As to running "rich" couldnt it be re jetted inexpensively?
Nik

NIK - got before and after dyno figures ?

No I dont but it holds hills now and revs through to redline a hell of alot quicker.
Nik

NIK - ok thanks for that, was just curious to try and put some numbers on the table.

I've got a 180 holley here that I took off the last zook I bought. I could never get it running right. I'm sure the carby gurus could have got it working properly, but for me it was easier to swap a standard carby back onto it. For what I use the car for, it suits me better. There's a 10 page weber thread on here somewhere.

MightyMouse wrote:NIK - ok thanks for that, was just curious to try and put some numbers on the table.

Ive only got an after which was 45rwkw. Weber 32/36, 235/75bfg mudds, extractors, 2inch system, s1 grasshopper and 3.9 diffs.

Cheers Dan

JrZook wrote:

MightyMouse wrote:NIK - ok thanks for that, was just curious to try and put some numbers on the table.

Ive only got an after which was 45rwkw. Weber 32/36, 235/75bfg mudds, extractors, 2inch system, s1 grasshopper and 3.9 diffs.

Cheers Dan

Thanks Dan, but without the "before" its really hard to know what's been achieved.

MightyMouse wrote:

JrZook wrote:

MightyMouse wrote:NIK - ok thanks for that, was just curious to try and put some numbers on the table.

Ive only got an after which was 45rwkw. Weber 32/36, 235/75bfg mudds, extractors, 2inch system, s1 grasshopper and 3.9 diffs.

Cheers Dan

Thanks Dan, but without the "before" its really hard to know what's been achieved.

Yea i guess your right. Just giving you a baseline number that I had. Comparing this to the stock 47 odd kws, it goes to show that with the addition of the power robbing mods I'm back near stock power. Hopefully when I get back to Oz i can whack the old std carb on and go for another few runs.
Cheers Dan.

Still sometimes the vehicle is more drivable - ie you might have shifted or reshaped the torque curve. Having torque when you need it IMO is more important than outright power where you don't.

I thought 47kw was at the flywheel if so 45 at the wheels with bigger/heavier tyres looks good.
If it helps when I went from 1300 with weber to STOCK 1600 there was a noticable difference.Then when I put the 1300 manifold and weber on it felt like the same gain again.
Nik

Ive driven with several carbys on my zook and i found the weber is the best for out right grunt. But if you want to run a snorkel then it will struggle for air flow as it is prone to rob air from each throat. ive run a 3k and 4k corolla carbs and they have similar probs but not as bad as the weber but no where as grunty as the weber. the stock carby was prob the best if using a snorkel but performance and outright grunt was piss weak in comparason to the weber and corolla carb.

In my opinion.
best carby with a snorkel is prob the stock carby.
best outright grunt carby is a weber with a ramflowfilter.
best allround carbyis the corolla 4K


i run a 4K carby atm. sports filter for the HWY and snorkel in the bush.


gonna play with a sidedraft carby soon.