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Found 14 results

  1. New SU carburetors made in the U.K. specifically for Z's! The set comes with street-able needles installed. Easy to set up and tune! Check out our store! www.roundtopsfuelsystems.com Factory air cleaner adapters under development, we should have some for sale soon!
  2. Roanz

    Tripel webers

    Anyone have triple weber dcoe and manifold they want to sell?
  3. CRAracer05

    WTB: Triple Carbs 45mm

    I am looking for a complete 45mm triple carb setup with the manifold and linkage. The condition be can be whatever if the price is right. Keep in mind a brand new set of Webers from MSA is $1,650.00 so I am looking for a cheaper price than this.
  4. Hey everyone, This is my first post to the forum, and I have a project and a few questions to share. I'm currently working on building a 6 carburetor setup for my l28 and have decided to use 6 30mm Mikuni motorcycle carburetors. I've selected these based on the airflow requirements of the engine while accounting for volumetric efficiency, engine speed, and of course engine size, and by comparison to some other carburetor setups (triple webers, various SU setups, etc). Needless to say, the Mikunis won't be compatible with the existing N33 intake manifold I'm currently running, so I plan to fabricate one from steel sheet and tube. My question relates to the ID sizing of the new intake manifold. I've read a rule of thumb that says the throttle body at the base of the carburetor should have an area that makes up 80% of the intake manifold cross sectional area. Based on this, I'm approximating an intake manifold ID of 33.54mm (see calculations below) Area of throttle body at carburetor base= (15mm)^2*3.14=706.5sqmm Area of intake manifold =.706.5/.8=883.125sqmm Radius of Intake manifold=(883.125sqmm/3.14)^(.5)=16.77mm Diameter of intake manifold=33.54mm Can anyone confirm whether this 80% rule of thumb is safe to go by? I know there are other considerations to make when it comes to resonance tuning and airflow, but I've had little luck finding anything conclusive. I'm also considering sizing the new intake manifold to match the ID of my existing N33 manifold and N42 head. Given the simple construction of the new manifold (going with steel tube and steel sheet), fewer changes in diameter might be better. Abrupt changes in diameter of the tube will cause turbulent airflow, which, while potentially useful for achieving an even fuel mixture, could also reduce throttle response (thus my reasoning for matching the new manifold to the head). Does anyone know the size of the holes where the head meets the intake manifold? I've done some searching around the forums but am unable to find this bit of information. Thanks for your help! Any and all advice is welcome. pkz
  5. I am on the search for a complete set of use-able / rebuild-able triple DCOE carburetors. Either 45mm Weber's or 44mm Mikunis is what I'm looking for. I would need everything to install into a 280z with an L28. Can work on trades as well, please see my for sale posting.
  6. CRAracer05

    EMPI HPMX Carburetors

    Has anyone ever used the EMPI HPMX carburetors on a Datsun before? I tried to do some searching and couldn't find much of anything? http://vwcatalog.empius.com/vwcatalog/2014/60.html https://www.youtube.com/user/EMPIHPMX/feed They are mostly used on VW air cooled engines, but I don't see why you couldn't just bolt them right up. They have a few videos showing dyno results where they made a few more HP than there Weber equivalents.
  7. Aerodynamic

    WTB WEBER DCOE 151 Carburetors

    Found what I was looking for. Thanks everyone. Moderators, I wish to close this thread.
  8. Deleted for inaccuracy / insufficient information.
  9. I have an L24 with SU carbs. I've had this idea of the ability to go from carbs to EFI and back relatively easily.This would require a bolt on replacement for the carbs. I'd still be using the stock intake runners and air cleaner. I'd also try to keep the TBs the same length as the carbs. This is what I've doodled so far. This uses a compact EV14 injector: http://www.bosch-motorsport.de/media/catalog_resources/Injection_Valve_EV_14_Datasheet_51_en_2775993867pdf.pdf Some fuel rail I found the dimensions of: http://www.rossmachineracing.com/images/large/dash8wire.jpg And the flange patterns from the SUs. This drawing lacks stuff still. The idle air intake, I figure, could go on the sides of the TBs facing each other and be plumbed to a T where one adjustment screw handles both the TBs idle. The placement of the injector is arbitrary. I just plopped it there and it worked out that the fuel rail doesn't interfere with the stock air cleaner (orange line). It's angle's just 45*. I'm not sure how evenly the fuel would be distributed down the 3 asymmetrical runners with this set up. Probably over thinking that though. The placement of the throttle plate is arbitrary as well. I've merely spaced it 1 cm from the flange to provide room for bolting on the air cleaner. These should retain most of the stock throttle linkage too. This drawing also assumes that both the front and rear of the SUs are 44 mm inside diameter and coaxial. I'm not sure about this. I know next to nothing about injectors. According to some megasquirt literature though; If I want the capability to fuel around 150 HP then I need 2 injectors around 500 cc/min each. Any reasons why this might not be feasible?
  10. Thefultz

    Flat Top SUs bog

    So I recently got a 260z last month and this problem has finally gotten to me. The infamous post emissions Flat top SUs are bogging when I lay the pedal to the metal. They will just begin to barf gasoline out the overflow valve if I start it up and rev it while the carbs are still cold. But this especially happens up in the hills (In Alaska) and no matter how slow I start up the carbs they will bog and puke up good gasoline. All I can do is floor it till what I assume is the floats go back up. Usually all it takes is flooring it till it touches off on 5k revs. But this problem is very persistant and when I come down from the hills after the carbs go cold all they wanna do is bog for the next 5 to 10 minutes. Now I'm just gonna guess this problem is from sticky floats and fouled up Emission carbs. (cept for all the emissions are taken off because Alaska)
  11. Hey guys, I have some parts from a 240Z and 280Z up for sale. I am located in Orange California and would prefer local pickup but am willing to ship the smaller parts. 14 x 6 wheels - $200 obo Camshaft (E30, Grind A) - $50 Holley Fuel Pump (Brand New in box) - SOLD Lash Pad kit (will measure and update post - brand new) - $65 A/C components (will take inventory and update with pics and price) - TBD Intake - Sold Carbs - Sold Airbox and ducting - $20
  12. Triple Carbs on Cannon Intake $950 (Updated Price) OBO *Shipped (Only United States is covered outside the US will have to pay shipping)*. Buyer pays Paypal Fees. If you are local I can easily accept cash. Alright I picked up a set of triples in my constant search for Datsun parts. I am hoping to sell them to fund some more Datsun part purchases. I am not currently planning to part out, but if enough people are interested I could part them out. I have shipped to Norway for about 110 just to give you an idea. Here are the stats Weber Carbs (40 DCOE 18 8js) Made in Italy x3. For those of you in mobile land I live in Aurora Colorado. I cleaned them, and was careful to not adjust the throttle settings so they should hopefully be in sync. I never ran these, I cannot tell you whether they work when I took off the tops of the carbs they were complete and everything seemed good. I will gladly take more pictures if you need them. Items included in the sale: - 3 Weber Carbs - Cannon Intake - Air Filters, the wire has been somewhat crushed (The foam could be replaced) - Throttle linkage - A certificate for a hug from me if you ever meet me in person The somewhat bad. The air cleaners are a wire mess set up and are somewhat bent, but still fit where they need to just fine. The clips holding on the airfilter 2 are missing out of the 12 total for the car. That is legitimately the only thing I found that I could tell was missing. I could be interested in trades. I am more interested in selling them outright but I could be interested in a trade. Here is what I am looking for. - Racing Brake Kit front and rear - Silvermine rear big brake kit (Really any rear disk brake kit) - Intercooler set up (maybe on this one) - GPS Speedo and Tach setup (Like Speedhut) - Cash (seriously I will accept this) - Wheels 15 or 16" widths of 7", 8", 9" would like them to fit with stock suspension and not require coilovers (Riken mesh, Panasports, Or just interesting wheels) - Something else if you have any ideas let me know. Below are some pictures taking from my cleaning. And a link to the timelapse of me cleaning the parts. After Cleaning. Bottom of carbs and intake. Before Cleaning. https://www.youtube.com/watch?v=wkMdS13BHiU
  13. Hello, recently i just recently purchased a used set of weber 40 dcoe. But basically i am missing a few parts such as the three eye joints that screw on to the manifold, and one butterfly and throttle shaft. What had happened was i bought the set of webers that had the three pieces of linkage missing so i new i was going to need those. But me being an idiot i was disassembling the first carb without penetrating fluid so i stripped the heads of the screws that hold the butterfly and the throttle shaft in place and i had to drill out the holes. But the throttle shaft needed to be replaced anyways since one of the ends threads were stripped. So basically i need one throttle shaft, one butterfly, and three of the eye joints that screw in to the manifold. The carbs seem to be fairly old italian weber Dcoe 18 No. 9E ,with a cannon manifold. Any help will be greatly appreciated.
  14. Hello hybrid z I have a question regarding the triple weber carb kit that is for L series engines. Well i am planning on getting the carb kit but i'm not sure which one to get. Here is a video of my car specs on the engine are in the description. Not sure what cam but here is what i think it is Grind: 17036. Lift(In/Ex): .495/.495. Duration(In/Ex): 290/290 any thoughts on this.
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