Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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1,450 topics in this forum
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I recently swapped some 240Z Carbs onto my 260Z, capped everything according to the other swap thread in this subforum (the only things that are unplugged are the PVC valve which im pretty sure has been unplugged since I got the car and the overflow hoses which arent connected to the air cleaner). I cranked the engine maybe 5 times before the car started and revved to 4000rpms and stayed there. I tried rearranging hoses and plugs and it did the same exact thing. the next day it wouldnt start and the engine would start going at very low rpms and would die at the same time the carbs spit gas out of the intake and would also have gas dripping from the fuel delivery line and …
Last reply by porkbun, -
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- 6 replies
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i have a L18 datsun 720 ute with twin flat top su carbs(Hitachi) but i cannot get the idle low+balanced yet everything is loose(undone) 1 su is very unbalanced i have found how ever there are 2 other screws that no body mentions at all these are outlined in yellow in this pic i have added (note)not of my ute but exactly the same as what i have the carbs are from a 180b sss from what i have been told) Yes i have a carb balancer and all the stuff needed also they do not leak any air fuel(only brake booster leaks air but i have blocked the very tiny leak off) does anybody know what these are set to or how to set them??? any info is much appreciated
Last reply by Captain Obvious, -
260z to 240z flat top to round top su conversion 1 2 3
by Guest tmsaws- 1 follower
- 26 replies
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So I have a stock 73 240z with all the original frankenstein'd pieces in the car. I recently purchased ztherapy round top carbs to replace my old flat tops. The car can start and idle but I'm having issues with the old balance tube. It's an n33 balance tube and n36 intake manifold. It still has all the old EGR equipment but it can't be used since theres no where to mount return wires on the new round top carb. Can anyone help me figure out what parts I can plug up/shouldn't mess with? It's beautifully overwhelming haha. Thanks guys! I took off two ports as seen in the 5th pic, I'm not quite sure what they did. Wasn't the greatest idea to copy a picture I found on the for…
Last reply by Captain Obvious, -
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Weber Rebuild and Tuning Manual for Performance Power Tuning Webers.pdf
Last reply by z e r o, -
- 9 replies
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I just received a 3 Barb fuel rail for L6 from Japan. I like it, thank you [mailto:yuiko@tatsumi-company.com]. I’m looking for sources for straight Banjo’s and nice fuel lines for the new fuel supply setup. I’m running 3 side draft Webers, 40 DCOE 18’s. All help will be appreciated.
Last reply by philbar73, -
- 3 replies
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hi guys ive got a chance to pick up a set of of triple solex carbs with out linkages or manifold for 100 dollars [aus] is this a good price .also how hard would the rebuild kits be to get and are they expensive .thanks
Last reply by 240260280z, -
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I just received my ZTherapy 3-screw rebuild kit from Bruce and I noticed that it now includes float-bowl pins rather than the ballbearing gross-jets discussed in the videos. Is this correct or should I look into it further? Has anyone else recently purchased a rebuild kit?
Last reply by Bruce Palmer, -
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Local (finnish) importer has introduced this new chinese made Weber clone, it supposed to be as good as the original and all the jets etc can be swapped from Weber. At first they made carbs mainly for volkswagen but they have started to make sidedrafts also. Anyone got any experience with these?
Last reply by Reverend, -
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howdy ya'll! what's up Bruce! these plugs came out of my 240 today...I put nice NGK pre gapped plugs back in. Now to tune the Zthereapied carbs back to normal. My brake booster went out and I had it rebuilt...but not before I had to drive it around with vacuum problems....trying to get it to run decently was an effort.... it wouldn't idle or run smoothly below 2000 rpm....
Last reply by Oiluj, -
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This seems rather off the wall to me but the two dampers on the SUs on my car are rather different in their resistance as I stick my finger in each carb and pull up on the piston. I had emptied the old oil from both carbs with my finger over the end of a drinking straw and then I put 30 wt in both dampers on the carbs (couldn't find 20 wt here). I was setting up the mixtures in the carbs VIA a 2003 beandip post and while getting good results (accidentally laid some rubber for the first time with this car today) I noticed that the one piston was much easier to pull up than the other. I swapped the dampers between the two carbs and the problem followed the dampers indic…
Last reply by Captain Obvious, -
- 7 replies
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I picked up a performance L28 recently and these SK tripples came with it, wondering if anyone can tell me about them, there is not much about them in the archives. I removed the cover for the jets and there are four jets just like webers, the two at the back on the emulsion tubes are 120, the two at the front are 60F8. The other two carbs are the same. Thanks,
Last reply by jmortensen, -
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Am in need of the pivot piece on the original firewall throttle linkage that attaches to the 2 rods (one for gas pedal, the other to the carb linkage) for a 70 Z. I tried to modify mine and it didn't work out :tapemouth. Will try to fix mine but am hoping someone might have the part I need as a backup. Anyone? Thanks for looking!! Throttle Linkage.pdf
Last reply by Duffman,
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