Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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The 1973 240 I bought has triple webers but their chokes are not hooked up. Does anyone have any advice on how to fabricate some linkage for these? I live in a fairly cool climate, so I assume I will need a functional choke. Am rebuilding the engine, so I haven't started the engine yet to see how these carbs perform. Thanks.
Last reply by tanny, -
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Is the difference very significant with this assembly? on a stock 240Z (more power, throttle response)? I live in France! where can i find the plenum to do this assembly? is there different models or brands?
Last reply by Bpaccaud, -
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I tried to use the Unisyn flowmeter on my three Webers(on a stock 240z) and can't get it to register any flow even when I dial the disk all the way down. Is there a problem with getting enough flow to budge the indicator at idle, or is it a defective meter? I tried the meter on a vacuum cleaner. and it required very little suction to move the indicator, but that's no real test. I thought maybe there could be leakage around the air horns, so I took them off but the meter won't fit between the air cleaner studs. Thanks, Victor
Last reply by ZmeFly, -
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I have twin jaguar su in my z (soon to be changed to round tops) and i need to change the filter box cause the old one is stuffed (more like moded with holes). So, can someone please tell me where i can get an air filter kit to fit in these carbs.
Last reply by That Ozzy Guy, -
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So I woke up this morning and doing the rollout of bed in that instant I decided to call in sick as it's my X'mas today. I'm an Orthadox, albeit an atheist at heart I still respect my parent's traditions. So what to do to kill some time before our family BBQ? ummm.... So I bought myself a new set of SU carbs, a kickarse filter that's a box as well, 2 ram tubes (2.5") and a breather. I can't believe the filter I've bought. If it does half of what I expect it to I will be very happy. Here are some pics of the shiny new toys Santa (read: me) brought on my X'mas Sorry about the quality of some of the photos.
Last reply by That Ozzy Guy, -
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I got it from Midel in Sydney. I can't vouch for it's performance yet but it looks very promising to say the least. Intake surface is huge and it's got a dry 3 layer foam with each layer progressing from a course to a fine build. It fits very nicely in place of the stock air box for the 240/260z from initial measurements. It retails for $120AU GST incl, measurements are 435 x 80mm and part number is PX-C6003 You will also need the base. This will cost you $72.30AU GST incl, part number PX-C6006 I also advise using ram tubes with this system for increased air flow. I am in no way endorsing this product for them, I just think it's a very nice set up so I wanted to sha…
Last reply by That Ozzy Guy, -
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Which carbs for period restoration/modification? Want 200bhp Road/track? Weber 40's ? or? Any ideas Nick
Last reply by Royce, -
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Here is something interesting, I am going to assume its maybe vacuum leak related, but here goes. Basically either the car will idle so low it wants to die (especially when coming to a stop), or if just a minor twich of the choke and it goes from ~500RPM idle to nearly 1200-1500 RPM idle. If I give it a small tap on the gas at the light when its idling low, it will hang around the 1500 RPM mark once again, and if/when it drops its usually pretty slow. Power is pretty good on the street, but I am still suspicious of vacuum leak or maybe incorrect jetting. These are dual Weber downdrafts (32/36), and am assuming the jets are unchanged from the donor setup but am not positiv…
Last reply by Mudge, -
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i have some tripple webber carbs on my new 73 240, and I was just wondering how much horsepower they add.
Last reply by Mudge, -
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Hey, my SU's are not running that great anymore since I tried to mess with them because they were fouling sparkplugs really fast. I'm wondering how I can do an initial settings on them or something. I don't have any special tools for tuning dual carbs, and no local shops want to do it either, so I'm going to have to do it myself. What should I set everything at? BTW, there 72's
Last reply by Victor Laury, -
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Are the stickers on (was there one on early 240) air cleaners available ? Nick
Last reply by NickF, -
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Today I was sitting around at the shop looking at my motor on the stand . Just wanting somthing to do so I pulled the carbs and started in on the tops. first I took the tops off. Then used 150 sandpaper then 200 then polish and my benchgrinder with a buffing wheel. WOW I will post some photos soon. I have only done one top at this point it took me about a hour and a half. Now you can see your face in it. This is going to look so cool when done and back in place. Now if I can find a car for the motor. :stupid: But a plan is a plan and my body now will still be getting her V-8. So on gose the look for another GOOD shell close to home I hope. I will have photos up with…
Last reply by biker,
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