Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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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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- 13 replies
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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, -
- 4 replies
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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, -
- 9 replies
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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, -
Color Tune?
by m240- 3 replies
- 2.2k views
I just "refreshed" the carbs on my 71' engine with a VB kit and it runs better than it ever did since I got it, but it seams to be running rich. It flooded out once and did not want to restart and I get some grayish / black smoke out of the tailpipe. I was thinking of getting one of those Color Tune tools to help dial things in better. Has anyone used this before and what do you think of it? Also the head pipe from the rear three cylinders glows red hot above idle while the front head pipe looks normal. Is this a normal thing? I balanced the carbs with a syncrotester and thought that both pipes should look the same. Thanks again for any help or suggestions!
Last reply by justaZcarguy, -
- 3 replies
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Hello all, Have just replaced my carbs with Ztherapy ones and have noticed that the carbs drain fuel over a couple of days and when I start the car I have to wait for the fuel system to refill. I guess I have a leak and intend to put some newspaper under the carbs after starting the car from cold and then shutting off. if there are blotches on the paper then I guess I have found the leak. However I was wondering if there is something else I need to check - fuel return system perhaps? Cheers Glenn
Last reply by justaZcarguy, -
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I really need some information on the web regarding Mikuni tuning and maintence, assembly bla, bla, bla... Any suggestions? Every search that I do I come up with plenty of cycle stuff but very little triple info.... Thanks and have a great weekend!!!
Last reply by justaZcarguy, -
- 0 replies
- 1.7k views
Someone here just asked me if one can use the Alfa GTV 2.5 V6 webers that were on the early pre-injection model ? Thumbs up or down Hey Guus, do you have pictures also of the Zs up there that run a diesel and the other on GPL ?
Last reply by Sean Dezart, -
- 12 replies
- 3.7k views
Has anyone in OZ got a good 240z air cleaner assy for sale, my carb's are round top 3 screw type .I dont think 4 screw type carbs are any different mounting wise { not positive on that }. Roger Salisbury Nth Adelaide South Australia
Last reply by Rogersz, -
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- 1.6k views
Hey (again), Onto the '74. Those of you that are running triple carbs or have this knowledge I need some help... The triple mikunis are currently being run from the stock electric fuel pump. Is this enough? I would venture to say no and I need to look into another if necessary... I have been advised on the carter inline pump for around $60. Ideas? thanks!!!!!
Last reply by justaZcarguy,
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