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Old 05-22-2009, 07:21 PM   #1 (permalink)
 
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Default 32/36 Weber on an 87

Im having carb problems, so i want to just replace the stock carb with a weber and get rid of all the electrical and vacuum hoses. I saw the kits on ebay for about $250, they come with the carb, conversion plate, and everything else, are these kits ok?
are there anyother problems i need to worry about.
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Old 07-21-2009, 06:47 PM   #2 (permalink)
 
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I have a 92 sierra and have been considering getting one of these kits myself.

This is the one i've been looking at: SUZUKI SIERRA/VITARA WEBER 32/36 CARBY CONVERSION KIT - eBay Engine Modifications, Performance Parts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 26-Jul-09 10:20:31 AEST)

I was wondering though whether the improvement in performance outweighs the steep hill issue (how bad it it really with these carbs?) and expense.

Also, what do these carbs do to fuel consumption? And can someone who has one please also comment on what the change to performance actually is?

Cheers
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Old 07-22-2009, 09:13 AM   #3 (permalink)
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Quote:
Originally Posted by RobertJ View Post
I was wondering though whether the improvement in performance outweighs the steep hill issue (how bad it it really with these carbs?) and expense.

Also, what do these carbs do to fuel consumption? And can someone who has one please also comment on what the change to performance actually is?

Cheers
The power definately is improved. you will feel a quicker throttle response and more power as you go through the gears. It doesn't give you much more top end (if you could do 70mph stock - you can now do about 80mph).

The steep hill issue is all up to how you wheel. You can turn the carb 180 degrees and then you will only bog going down steep hills, but it's easier than trying to get up a waterfall while the carb is popping.

As I have said in other posts, If your going to spend the money, time and effort - you will get better performance, fuel economy and pure power from a Harley conversion. And... it will run at ANY angle.

Last edited by Billjohn; 07-22-2009 at 09:16 AM.
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Old 07-23-2009, 12:03 AM   #4 (permalink)
 
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What would be the most appropriate HD carb? also are there any adaptor kits available apart from the side draft system on ZOR?

I'm in Australia so somewhere with cheap international freight is preferable.

Also, could you guess what the angle would be when a Weber will start having problems?
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Old 07-23-2009, 12:54 PM   #5 (permalink)
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I have used both the 40mm and the 44mm Screamin' Eagle carbs in the two installations I did. I preferred the 44mm.
The original setup that hit the market from ZOR was basically an adapter, and it worked. But both ZOR and Petroworks now have versions that involve remachining the original intake to allow a true side draft approach to air flow. The adapter version added too much of a bend which restricted airflow. You will want to get the whole kit that includes that intake. I think both companies will ship overseas.
Here is a shot of the Petroworks version. I had it installed and burning rubber in one afternoon.

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Old 07-23-2009, 11:01 PM   #6 (permalink)
 
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I've sent through emails to ZOR and Peroworks asking for shipping quotes but i suspect they will be be quite high and move the price outside of what i can afford.

I've also sent through an email to the guy offering the Weber kits in Australia asking about the angle problem, he replied:
"The Webers are fine in all but the most extreme of angles. A couple of our customers participate in extreme off road events in Suzukis and apart from the vertical drops they are fine."

Does this sound about right or is he downplaying the problem (i don't think i'd ever be much steeper than 60 degrees)? I might be able to get an alternate kit with a Holley or Dellorto Carb instead, would this be a better option than the Weber?
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Old 07-24-2009, 08:40 AM   #7 (permalink)
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Quote:
Originally Posted by RobertJ View Post
I've also sent through an email to the guy offering the Weber kits in Australia asking about the angle problem, he replied:
"The Webers are fine in all but the most extreme of angles. A couple of our customers participate in extreme off road events in Suzukis and apart from the vertical drops they are fine."

Does this sound about right or is he downplaying the problem (i don't think i'd ever be much steeper than 60 degrees)? I might be able to get an alternate kit with a Holley or Dellorto Carb instead, would this be a better option than the Weber?
Most of the trails here (US desert southwest) have dry waterfalls or ledges that could be considered verticals, so he is right. Here is an example of one that gave me trouble with the weber, but was easy enough with efi or the Harley.
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Old 07-24-2009, 08:42 PM   #8 (permalink)
 
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I just got this message from another Weber kit seller after asking about the Weber problem and the possabiliy of :

"A Harley CV adaption is not offered because it is not suitable: incorrect idle and no metering needles to calibrate with. We do offer a CV conversion for a Sierra using an SU CV carb.
As to your next concern, avoiding angle problems with Webers is easy; buy the right model Weber. All the problems you have heard about are from people using the street 2lt Weber(DGV5A), or worse, using the Weber off the ford escort and cortina 2lt engines. These carbs are designed for inclines to 20*. We have been selling correct Weber kits for Sierra now for 8 years, including competition hill climbs."

Do you think the SU (probably a HIF44) would be a better option if it was a similar price? And, do you think the problems you had may have come from using a Weber sourced from a 2lt motor?

I've read a lot of conflicting info about the SU HIF44 in regards to it's performance and reliability on other web sites, but i'd love to hear from anyone who can compare it to the Weber 32/36 when it's bolted onto a sierra/samurai/jimny.

Thanks for all the help so far (particularly Billjohn) and i look forward to hearing your opinions on the matter.
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Old 07-24-2009, 11:22 PM   #9 (permalink)
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I have never worked with the HIF44, so i won't guess, but the 32/36 mostly used here is the 32/36 DGAV, and to work you must tune it using jets based on the elevation and air moisture. I was looking for more power, so I used the 38 DGAS carb. Still had to be tuned for where I am, but bumped the top end up into 90's at almost 6K. The Harley carb also needs to be jetted correctly for your location, but it gave me even more RPM and took me past 100mph on flat ground. Top speed gps verified at 103mph. Then we turned on the electric locker and took it through a typical trail at low rpm's. it idled at 600 rpm and could climb waterfalls at about 1200 rpm.

Sounds like the guy just wants to sell you what he is best at.
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Old 07-26-2009, 03:03 AM   #10 (permalink)
 
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does the fact the SU is a CV (constant velocity) carb mean it would not suffer on hills (definately)?

I'd still like to hear from anyone with a SU carb in terms of performance if your out there.
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