Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
Subforums
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Hi im having some problem with my 240z, one of the Solex/Mikuni triple carb is overflow when idling. My mechanic told me that is the carb problem. and is very hard for me to find spare for the carb. i decided to change to weber DCOE 45. My question is the original manifold for the Solex/Mikuni triple carb can be use for the weber DCOE45 triple carb?
Last reply by d240zx2, -
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I recently purchased a book on how to tune and rebuild SU's as good light reading, and I ran into a problem. It covers all manner of SU carbs. HS, HD, HS2, HS8. I am pretty sure I do not have the later, but after I get my carbs back from Z therapy, I would like to know which chapters to follow. I have a stock 71 240Z. It has an E46 manifold for what its worth.
Last reply by Walter Moore, -
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I'm changing back to the stock air cleaner box as part of my Winter upgrades. Which got me thinking...has anyone tried a ram air set-up with the SU's and stock air box? I was thinking about running a 3" +/- duct from the intake of the air cleaner box to a collector (maybe 3" x 24") above the front valance, below the bumper. I work in construction, so getting a collector box fab'd should be pretty easy. Seems like it might be a pretty cheap and easy way to pick up some HP's, and help with the problem of overhead heat affecting engine performance. Anybody tried a set-up like this, any results?
Last reply by gnosez, -
- 13 replies
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Do Z therapy carbs come balanced and ready to bolt on? I would guess not, as no two engines are the same, but what adjustments are needed when bolting on carbs that you get back form Z therapy.
Last reply by Zedyone_kenobi, -
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I am finally converting my 75 EFI to SUs. I needed some help in determining which electronic components I should disconnect around the area circled in red below. (See attach.). There are various electrical pieces attached to the black box including the voltage regulator. I know I need the voltage regulator, but what about the rest. Can I just unplug the rest and put electrical tape over the open circuits? Do I need the fusible links as well? That is not my car by the way. I wish it was.
Last reply by shadesh, -
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:disappoinI recently bought a 74 260z with Hitachi Carbs.I did a complete tuneup ++ and then had the carbs adjusted for $$$. It seemed oK at first. Now I have a problem with the way it runs if I start it while it is still hot. It runs pretty good for 50 miles but if I stop for gas or a soda then I start it back up it will stutter and run very weak. The engine temp stays low. I have to pull the hand choke all the way back to get power under load. It does not stall out. I have been through the vapor lock theory, and it is not the problem I think. I ran new fuel lines and insulated them , the pumps are new with good pressure. When I have this problem I can drive it for mil…
Last reply by gmr714, -
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I am converting from EFI to dual SU's in my 1975 280Z. I will use the fuel tank and the metal fuel lines that are in my '75. I was thinking of using the stock EFI fuel pump, which is at 36psi. I saw a 3 port fuel pressure regulator (Mallory 4309 High Performance Universal Fuel Pressure Regulator) and was wondering if I could use this with the EFI fuel pump.? Or is the EFI fuel pump too much for this type of fuel pressure regulator.? I know that the SU's only need ~4 psi of fuel pressure. Is this something I could hook up between the fuel filter and fuel rail? I eventually plan on getting an aftermarket fuel rail. Is the 3 port fuel pressure regulator what I need t…
Last reply by zKars, -
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Has anyone ever heard if it is possible to use a blow through system on an SU carb? It doesnt look like it would be difficult to install a centrifigal blower on an l6 engine, but are the carbs "blow through" friendly? I know you can blow through a carter or holley 4bbl carb. If possible to install a blower without going fuel injected, Id like to try it.
Last reply by BURLEIGH, -
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I'm thinking about changing from my Longflo filters back to the original air cleaner, for two reasons. One, I want to go back to the original look, and two, I have heard that the carbs actually perform better with the original air cleaner. The air cleaner is from the original flat top carbs, and the new carbs are ZTherapy 3-screws. The flat tops have a square opening, while the round tops have a round opening. Will the air clearer work properly with the round tops, or do I need a 70 - 72 air cleaner? Also, would there be any benefit to using a "cold air" induction kit with the round tops, or is that really only effective with FI cars? I'm thinking about fabricating a …
Last reply by Arne, -
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Got what i hope to be a quick question... A little history first. I have been slowly refreshing my 72 240, the car sat after being a daily driver for 15 years in the new mexico sun. I dropped the gas tank had it cleaned replaced all fuel lines from the rear forward new plugs wires, coil,filters and fluids. I wasn't getting sufficent fuel so I got a new fuel pump from msa. car still wouldnt start... Thought I needed to send in the carbs for a rebuild but i couldnt afford it so I got bummed. Anyway after more research I found the fuel lines under the SU's to be clogged. cleaned them out and POOF! the car ran. It sounded like $^!# so after closer exam…
Last reply by slo929, -
- 9 replies
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I've looked a few carb rebuilder sites, prices are similar. Any recommendations as to best quality of work and service? I am going to order soon. Thanks, Mike
Last reply by mbarjbar, -
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Guys, Yes it is my first post and I have searched. I need a picture of the DGV linkage. I have the parts but cannot figure it out the fit in a logical manner. The most logical position doesn't work without grinding some pieces...which I don't want to do on this car. Thanks, After this it will be out of its 3 year jail time, or soon to be. Dayz __________________ 240z -1971 - Simple Restoration...close to show car - In progress 240z -1972 - Street machine -next one on the table 240z -1973 - Need to find a new home !! Someome wants to buy it?
Last reply by Dayz,
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