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Old 11-30-2018, 03:39 PM   #1 (permalink)
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So I've owned my '86 Sami for about a year now and haven't driven it all that much because it's just embarrassingly slow on the hills on Hwy. 101 here in central Oregon. It absolutely shines on the dunes when the tires are deflated to 12lbs motoring up stuff I would have never guess possible, if (and this is a big 'if') the revs are kept really, really, high approaching the dune. As soon as the revs drop below about 3k the gutless 1300cc motor simply loses steam quickly. And since staying on top of the sand requires about 20mph of speed, 2nd gear in low range can do the trick most of the time.
Here's what I'm curious about. The stock carburetor is junk and maybe the fuel pump as well. The accelerator pump doesn't work worth a damn (I'm guessing) as leaving the the car for two days without driving requires pumping the pedal at least a dozen times, cranking for a 10 seconds, pumping the pedal for a dozen more times, cranking for 10 seconds, pumping the pedal for a dozen times, cranking, pumping, etc.
If there is gas in the float bowl, one pump on the pedal (to activate the choke?) and she should fire right up.
But that's not happening.
So I was just wondering... Replacing the stock one-barrel carb with a two-barrel Weber (or equivalent). Better power? Shitty mileage?
Any input is appreciated.
Thanks in advance,
Mark
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Old 11-30-2018, 06:13 PM   #2 (permalink)
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Welcome to the forum. Afraid I can't help as over the pond here we have the Aisin carb which is often replaced for a modified manifold and SU unit.
I found this via the forum as a replacement option for the Hitachi unit you guys have..

PW CV Carb
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Old 11-30-2018, 06:19 PM   #3 (permalink)
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I can't find it on Petroworks website so I guess that's not an option any more.
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Old 11-30-2018, 07:10 PM   #4 (permalink)
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Thanks for the info. Still toying with the idea of swapping out the anemic 1.3 gasser for a 1.6 or 1.9 vw td as I have some experience with those.
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Old 12-07-2018, 09:08 AM   #5 (permalink)
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I just joined. Was reading people's problems and saw your. Weber is a way to go. Not your every day driver? Lower gas mileage is a yes. But better performance. Not the imberassing slow guy anymore.
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Old 12-12-2018, 06:39 AM   #6 (permalink)
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welcome to the forum
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Old 12-12-2018, 07:01 AM   #7 (permalink)
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Thanks for having me. Enjoy reading posts. And learning about odd stuff.
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Old 12-29-2018, 11:55 PM   #8 (permalink)
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Swapped on a used Weber yesterday I found 3 miles away and for just $40. Took about an hour to pull the stock Hitachi carb, and another hour to bolt up the Weber. Fired up after 20 seconds of cranking and settled into a smooth idle 10 seconds later. HUGE power increase when secondary kicks in. Best $40 I ever spent!!! Now I need to find a quiet muffler to replace the loud thing a po welded in. I'm at that age where loud rides suck! Any suggestions on size of muffler?
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Old 12-30-2018, 06:21 AM   #9 (permalink)
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It'll be interesting to see what happens when you take it off-road - webers have a way of flooding on an incline...
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Old 12-30-2018, 10:10 AM   #10 (permalink)
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Yeah, I take it out on the dunes around here but nothing extreme in terms of climbing.
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