Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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1,458 topics in this forum
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I am eliminating the smog stuff on the balance tube on the intake manifold of my 1970 Z. I want to put a threaded plug into the larger hole near the PCV valve and in one of the smaller vacuum barbs on top of the balance tube. Standard NPT 1/4 and 1/2 plugs look close but do not work. Anybody know the correct (?metric) thread size for these openings? Mike
Last reply by mbarjbar, -
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- 6 replies
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Hello guys, just joined this site so i could get some help from u people out there. Have a 240z that i need to work on but little money to do it, so hoping u guys could offer some effective (but relatively cheap) ways to work on it. Im a big noobie at this stuff so all the help would be appreciated. For instance: the car runs fine and everything, but it always smells like its running rich all thetime. I checked to see if there was a fuel leak but that wasnt it. Do i need to tune the carbs up probably? what's the easiest way to do so?
Last reply by Travel'n Man, -
- 4 replies
- 2k views
Hello All, I am getting ready to reinstall my Intakes and Header manifolds. It has been many years since I removed them from the engine and do not remember what type of seal was at the end of the water tube between the intake manifolds, O-ring? Some type of rubber gasket? How did everybody seal this tube? Nissan shows the seals as no longer available. Any help would be greatly appreciated. Thank You, Jeff
Last reply by Bruce Palmer, -
- 10 replies
- 3.4k views
Any one have any pic on how to link the short Mikuni manifold up, without welding or crazy butchery...Im was running Weber's with the Cannon, and now I have Mikuni's. Got Pics..
Last reply by mildsquare, -
- 10 replies
- 4.5k views
I've gotten lucky in many ways so far with this Mikuni project, but it's looking like I might have to bite the bullet here... All I can find for a heat shield online looks to run around the $150 ballpark. That seems extreme to me, but considering I won't/can't make my own, perhaps that's the point. I haven't reached out to the race shops yet, but does anyone know something obvious I'm missing in terms of sourcing one of these?
Last reply by Travel'n Man, -
Mikuni fuel leak 1 2
by acador- 23 replies
- 8.9k views
I pulled off my mikuni 44s last night to do some head work and I noticed one air filters was fuel soaked. There was also a bit of fuel on multiple air horns and possibly some on the valves. My fuel pressure is set at 3psi and I recently adjusted the floats to spec. What are some possible causes for fuel leaking into the venturi on these carbs?
Last reply by acador, -
- 1 reply
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just rebuilt the carbs and what a difference, only thing is it is almost impossible to start. I'm think an elect. fuel pump that me "primes" the carbs before start would help this problem. The choke is working but doesn't make a bit difference. What do you think? Thanks Asa
Last reply by buysell, -
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- 1.8k views
Last reply by 240260280z, -
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Just rebuilt carbs and can't get to idle right, runs at about 3000 rpm.None of the adjustments affect it. What have we done wrong? Thx
Last reply by moondawg, -
- 18 replies
- 4k views
http://www.redlineweber.com/ I am contemplating building another L24 for my Z, and wanted to try triples. However, many vendors sells the kit for the Datsun 240Z conversion. MSA, REdline, Peircemanifolds, and may be others. Anybody have any recommendations on which vendor to purchase from.
Last reply by LeonV, -
Carb Tune up tool 1 2 3
by tamo3- 26 replies
- 12.5k views
Hi, I was wondering which tool should I purchase to tune up balancing for my '72 240z SU carb. Later on, I'm planning to upgrade to triple Carb. Thus, I would like to use both carb with one tool if applicable. Should I get SYNCHROMETER http://www.piercemanifolds.com/product_p/ste%20sk.htm or Edelbrock Uni-Syn Carburetor Balancing Instruments http://www.summitracing.com/parts/EDL-4025/ or any other alternate suggestion. Also, I will be appreciated if you can recommend good website to purchase. Thanks!
Last reply by LeonV, -
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Making sure this is alright due to using parts from a 71 and a 72. I have a E36 intake manifold (believe this was from a 71), no water jacket going to carb. Then I have the 72 insulators with the water jackets. Going into the 72 SUs with water jackets. Ok, now for the air box side of the SU's, I have the 2 air ports at the top which I believe feed the damper. But my air box only has the one opening for the air port. Does this all seem compatible? I am currently not running the water line thru the intake, so I do not suppose there is an issue with the insulator but wondering if I should be using the earlier insulator with no holes. And for the air box onl…
Last reply by hyperdrivez28,
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