Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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I am getting my 40DCOE's rebuilt. I could have done it myself if I had more time,but I got tired of looking at them all spread out on the work bench for years. One of the carbs needs a new throttle shaft. The new shaft from Pierce Manifolds is not drilled for the pump cam. What is the best way to index and drill the throttle shaft correctly? I do have a drill press, but set up and technique is my real question. Thanks, Charles
Last reply by Patcon, -
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I have a 72 240z completely stock. Car runs great throughout RPMs very strong! Once Ive driven around and temp is warm at a complete stop it idles around 1.5k and won't drop down. Also once I turn the key off pull out the key the engine remains on for about 5-8 seconds until it burns of the remaining fuel. First carb car any suggestions to fix this problem. Thanks for the help!
Last reply by Bruce Palmer, -
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Is there anything to be giained by going from the standard roundtop SU's to a set of Weber DGV's?
Last reply by sblake01, -
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Okay so my 1973 240z (all smog gear removed) wont go above 60mph in 3rd or 4th gear, kind of hits a wall. Pulls strongly through RPM range in 1st and 2nd up too 5000 rpm (didn't try any higher), change to third and all acceleration ends. Doesn't seem to be hunting for extra fuel, just stays where it is. I've checked my timing (with a strobe) it's set at 10 degrees @ 800rpm.I've tried advancing/retarding it with no improvement. I've got a new petronix ignitor (had one before replaced it as test) with new 3 ohm flamethrower coil (no ballast resistor). Just put in new NGK sparkplugs, re-checked SU float levels are correct, made sure damper oil is in dashpots, and that piston…
Last reply by a7dz, -
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OK....New to the Datsun world. Have some questions. The car has a totally rebuilt engine, but it hasn't been run in about 3 years. When we went to start it, fuel comes out of the hose that's connected what at first thought was an overflow valve. But, upon reading, that's not an overflow.....It looks to be an air intake. We actually clamped them (there's 2, one on each carb), and the car started right up. But now gas leaks out the float....perhaps a bad gasket. But my wquestion, why does gas come out of these tubes. If it's an intake, it should be sucking in air. What if there's not enough oil in the reservior. Why is there oil in the reservoir?? I'm lost.
Last reply by Zedyone_kenobi, -
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Hi guys, i'm robin from holland and bought a 260z 2 days ago. (i will introduce me in a short time on the site ) The Z has some minor issues that have to be solve. things like the rev meter doesnt work and lights etc. But there is a big problem, i gues, with the carburetor. The car starts immediately even when it is very cold ( now its freezing here ) and then with some choking the engine comes alive. I know that the carburators arent'n being running that good, but i can drive the car normal with sometimes that the carbs wont get some gasolin for a second. But said before, the carbs need some adjustment. When i drive around for a while en then stop en turn the car off i…
Last reply by SteveJ, -
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Does anyone have any extra ones of these? They're the springs that attach from the heat shield to the linkage of each carburetor.
Last reply by Bonzi Lon, -
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This is the first time I have posted, so hope I'm not screwing things up here. Just wondering if anybody is running an aftermarket intake on there 280z. I bought a 71 240z with an L28 engine that has a Clifford manifold and a 500cfm Carter. there is also a 390 Holly that came with the car. From what I can determine, the 500 is prob. to much carb and I would be better off installing the 390. Is anybody using this setup?
Last reply by Dobber, -
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I'm putting a pair of weber 32/36 downdrafts on a 280z. I have an n33 intake and the cannon mounts. theres also a connector bar on the intakes where the egr and linkage rod are attached. seems like a lot was plumbed into the connector bar water air ect. does anyone know a link that shows set up for this? or is this a similar setup i could find in a 240 or 260 manual. thanks for any help.
Last reply by ezzzzzzz, -
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hey guys i was wondering if any of yall know a good site to learn how to tune flat tops from a 260z. thanks guys much mahalos!
Last reply by Travel'n Man, -
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I have tried to rebuild carbs for the first time...not too bad, but I get a hesitation/ stall out when first accelerating then it runs great. Any advice or know anyone in South Florida who rebuilds them? Cheers!
Last reply by ChrisZ, -
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I've read posts until my eyes are burning searching for some sort of answer. 1972 240 3 screw SU's. Car hadn't been driven since 1992 (43K original miles). Cleaned the tank, new filter, flushed the lines, etc. When it is cold (not started) it will crank for an eternity and never fire. Nothing. Spray a little starting fluid into both carbs on the crank cycle it fires and does the lean pop thing. Do this several times and it will pick up slowly and then run along if you hold it above idle. Once it warms up, it runs very well, idles well, drives well and restarts well. But, once it goes cold again, no way to start it without starting fluid and coaxing it along. Once…
Last reply by Bruce Palmer,
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