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Thread: triple weber manifold identification

  1. #1
    Registered User s14280zx's Avatar
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    Default triple weber manifold identification

    I bought a triple weber setup locally off of a wrecked 280z,and the linkage rod is bent up, and I think two plastic bushings are missing that keep the linkage tight. I was trying to find out what type of manifold it is so I can get new linkage parts. On the bottom ,there is the number 0030 stamped into the casting. Also , instead of having the bolt type linkage guides, it has two uprights cast into the aluminum. Any help would be appreciated.

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    240 Z Owner/Nut Case dhoneycutt's Avatar
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    Pictures would help out alot
    David A. Honeycutt
    United States Air Force, Retired


    1972 Datsun 240Z HLS3079961
    A Work in Progress

    2004 Mazda 6s
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    The Only Difference Between Men & Boys... Is The Price Of Their Toys!

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    The Mikuni uses a 10mm rod that the linkage attaches to. I think the Cannon uses a 3/8" rod. Of course, the Mikuni usually has a giant MIKUNI cast into it and the Cannon says Cannon on one of the runners...

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    Track toy addict bjhines's Avatar
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    Don't forget the great quality TWM manifolds... they have TWM embossed in the center top of the middle carby flange... I can get the thickness of the rod for you if you have this one...

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    Registered User s14280zx's Avatar
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    My manifold doesn't have a name stamped on it, just the #0030 on the bottom. I'll try to post pictures as soon as I figure out how. THANKS

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    Registered User s14280zx's Avatar
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    I couldn't figure out how to downsize my pictures to post them here, but I posted them on my member's gallery. You can check them out as soon as they're approved.Thanks for looking.

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    Track toy addict bjhines's Avatar
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    That looks like a TWM manifold to me...

    Check if the runners are 45mm at the carby ends...

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    Registered User s14280zx's Avatar
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    I measured the carb side of the manifold and the openings are about 42mm. The linkage rod measures 3/8" , and the two holes where the linkage goes through are 1/2". There were plastic bushings that made the linkage tight and acted as a bearing, but they were cracked. Do you know any place where I can get parts like this? THANKS

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    Sounds like something that would be easy to replicate with a lathe. Maybe an oiled bronze bushing instead of plastic.

    42mm... Weber makes a 42mm carb I think, but it's kind of an oddball. You could port the manifold out to fit 44's or 45's.

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    The carbs I have are Weber 40 dcoe 151 series. These were on the manifold when I bought it. The setup was on a running 280z owned by a friend of whom I bought them from. According to him, the guy was on a back road in PA, and hit a hump going 130, and flipped the z on it's roof in a corn field. The driver's buddy got hurt pretty bad, and the driver went to jail, so he sold the kit to this guy cheap. I got the setup for $200, everything is in good shape except the linkage.

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    Well the fact that the carb opening is smaller than the manifold is preferable when compared to the manifold opening being smaller than the carb opening. It should work just fine. I'd be surprised if you couldn't find that bushing readily available, but if you did have to have it made it should be really easy for any machine shop to make you one. Looks like a nice manifold all in all!

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    Track toy addict bjhines's Avatar
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    TWM has a website I think... in any case there are several Weber carby specialists who have a huge variety of linkage options and parts... Try Pierce Manifolds.... or Weber direct.... Get some measurements and they can crosscheck parts...

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    Thanks for the help guys. When I get it all set up I'll add some pictures to my gallery, might be a while yet. I made the fuel line with earl's fittings, I'm going to be taking the motor out and putting the N-47 head off the origional motor on the F-54 block off of my parts car, with the flat top pistons. The carb setup came with the weber book, which had the specs of the cam the owner had on the car it came off of, so I'm going to get a motorsport stage two cam kit . I can't wait to see how it runs, and sounds. I've never heard a car with triples before, but I heard they sound good.

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    MSA stage 2 cam is way too small IMO. Stage 4 is more like it, but bigger than stage 4 would be better. Do a search you can find various other threads about the subject, but that stage 2 is really too small for triples. Might want to consider something other than a Schneider cam too. Search on that one as well...

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    THANKS, What cam kit would you recommend? My setup I'm planning is: F-54 block,n-47 head, Weber40's, Motorsport header, 2 3/4" full exhaust,magnaflow muffler,ACT streetdisc,Extreme pressureplate,Fidanza flywheel,MSD 6al,carter fuel pump.I have most of the parts except the clutch,and the fuel pump. Is there anything else you would recommend for this setup?

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    No, that combo sounds fine. You might want to go with the less extreme pressure plate. I'm putting out ~240 whp according to the drag racing calculators, and I'm using the lighter pressure ACT clutch with a stock disk, and it holds the power down just fine.

    On the cam to truly get the full benefit of the triples I'd go with something in the .500/300 range. You will have issues with coil bind so you'll have to get some different springs, and also you will need different valve stem seals. If you search on hybridz there is a thread where a user name speeder found a Ford V6 seal that is Viton which is a better material and will allow for .600+ lift and fits right on. Last thing to be careful of is valve/piston interference. If you go really huge on the cam you might have to have the pistons fly cut.

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    I have invested in hundreds of dollars worth of parts trying to squeeze out every last HP on my set up.... expect them to be somewhat of a project....

    I found that my raw TWM intake had larger runners than the raw port size on my E88 head... I went ahead and port matched my head to my intake... and smoothed out the intake as well... I also tapped every runner and made up a custom vacuum manifold.

    That set up is a good choice if you have patience... It helps to get it on the dyno several times... between jet orders that is.... I could not find anyone who had a good selection of jets locally... so I had to bite the bullet and order them... I also tried 3 different venturi "choke" sizes.

    The real deal with these carbys is the infinite tuneability... I have a much better mixture across the board.. I can now drive the car out of corners in 3rd gear with good results... it also has good power to 7500RPM.. the SUs pooped out after 6500RPMs
    Last edited by bjhines; 05-08-2006 at 07:56 PM.

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    I looked on the spec sheet for the cam that was in the car, it was .274 lift. What kind of power would this setup put out? I've never driven a car with webers, or raced any with my 240sx. This is my first car that isn't FI, so I'm trying to learn all I can about the weber setup, so I can build a good running motor. I appreciate your time spent helping me out. THANKS
    Last edited by s14280zx; 05-10-2006 at 08:03 PM.

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    I have a fidanza flywheel and ACT street clutch, and Extreme pressure plate on my 98 240sx(ka24de), and it is awesome. I can catch 4th gear pretty easily. I don't mind the slightly harder pedal. Climbing ladders every day helps I guess. What brand cam would you recommend?

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    Would the 500/300 cam have a real rough idle, I would like to keep a fairly smooth idle if possible. I will be driving this car occasionally on the streets, probably on weekends mostly. I never really entered any road races or any thing like that, not saying I wouldn't like to in the future.

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    Thanks for the advice. I'll try a bigger cam, Any recommendations as to what brand I should consider?

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    Bloxman bloxman's Avatar
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    Hi there I think I may have similar three in a row carbs. When you say 151 is that stamped on them anywhere cause mine are marked
    Tipo 42 dcoe
    No 6D
    The reason I ask is I'm looking too purchase some carb kits from Redline as this engine has been sitting for fifteen years.
    Any help would be appreciated

    Lawrence

  24. #24
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    Yes, it says Tipo 40 dcoe 151 on the top cover just below the wing nut cover.

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