Carburetor Central
If you have questions about the SU Carburetors, this is where you can find the answers.
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Ok, this has obviously been discussed more than 10K times but this is what these forums are for, right? I started my 72 first time for 5 months. It's in warmed garage so climate should be out of question. First it didnt want to give gasoline to carbs, so i open the valve cover and manually pumped fuel pump so that i could see it flowing through filter. After that it started, very roughly but after giving some pedal to the metal, it started to run with all 6 cylinders. In fall, when i make the first start, it didnt cough no matter how much you rammed it but now it seems to cough if you press too fast too hard. Front carb seems to be working alright but the rear one is sq…
Last reply by buysell, -
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Has anyone here installed these? I'd be curious to know how they perform on a Z. http://www.v-performance.com/products/air_fuel.html Thanks.
Last reply by Marty Rogan, -
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When I upgraded my brakes, I switched to a 280ZX master brake cylinder with the bleed nipples on the engine side. When removing the air cleaner, the forward bleed nipple keeps scratching the paint on my air cleaner cover. My solution is to move the carbs inward 0.35" by machining down the carb spacers. (see attached pic of original spacer next to thinner spacer.). This should provide adequate clearance for the air cleaner. This week I'll do a gasket drawing and use the laser at work to cut some new gaskets. (Yes, it's a cool toy...). * If you try this, be aware that machining phenolic can create toxic dust, so use a vacuum to carry-away the fines generated during…
Last reply by Inf, -
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I've come across some NOS fuel pumps over here, part# dont say me anything and the seller only know they are for Datsuns. My car is more than a hour from me, so can one of you that have a spare, take some measurements for me, i like the distance from center to center of the mounting holes and also length of arm. Thanks Chris
Last reply by ChrisZ, -
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This may be repetitive - but I've spent a lot of time researching and playing with the SU/Hitachi carbs – in my case three screw round tops. Here are some statements mostly about mixture that I’d like some feedback on - I think are all true, but please correct me if I’m wrong. 1. The rough setting for fuel mixture is the float level. 2. The fine setting for fuel mixture is the nozzle height adjustment screw. 3. The fuel level in the float bowl needs to be high enough to ensure adequate fuel supply at full load, but low enough to ensure that flooding will not occur. (approx. 23mm from the top of the float bowl) 4. If the fuel level is at the lower end of the a…
Last reply by tlorber, -
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Forty years is a long life for the plastic fittings that fit around the balls on carb linkages and such. :mad: Mine are still in "decent" shape, but being made by the hand of man, are subject to failure at any time. Does anyone have a source for these little white plastic heim-joint type thingy-bobs?
Last reply by Headstrong280z, -
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Hi Folks, Long time lurker, first time poster. I've searched for this and unfortunately haven't found anything. Does anyone know where I could get the rubber seals (gaskets?) for the stock SU air cleaner? This would be for the early air cleaner (non flap, non heat-riser tube). I am thinking about getting rid of my individual round K&N filters and going back to the stock air cleaner box. Oh, and would anyone happen to have an extra set of bolts for the air cleaner? I'm missing one of the wing-nut/inner bolt pairs. You know, the one that holds the outer shell to the mounting plate and the bolt that goes inside the air cleaner between the outer bolt and the mounting plat…
Last reply by ajmcforester, -
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please help me figure out hot to hook these up correctly. I plan on just running the supply fuel line, and no return line but i am unsure which is which? fuel line sup? fuel line ret? misc fuel line? brake booster hose? battery neg/pos hookup to starter? breathers?
Last reply by 70 Cam Guy, -
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The thurmostat housing has a coolant hose connection comming out of it and from my research it seems that was orignaly connected to the intake manafold? Sence i'm running a tripple weber carb's and a cannon intake manafold what should I do with that coolant outlet on the thurmostat housing? Thanks, Colby
Last reply by 70 Cam Guy, -
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I just got a new set of 40 DCOE triple webers and am having problems with fuel leaking from the carbs. I bought a set years ago for another Z, and they worked great right out of the box, but I can't get these new ones to stop leaking. These are the newer ones with the plastic floats. The documentation says that the closed position of the float should be 12.5 mm from the cover gasket and 25 mm max open. I have tried these settings and have even progressively moved the closed position all the way up to 20 mm, leaving only 5 mm movement of the floats, but they still leak. I have read online that if you remove the jet inspection cover, take out the main jet that there shou…
Last reply by oldhemi, -
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Hi im having problem with my fuel pump. im looking for replacement fuel pump. anyone can recommend me any website to buy from? i saw this in ebay. http://cgi.ebay.ca/NISMO-Electric-Fuel-Pump-DATSUN-510-1200-240Z-110-120Y_W0QQitemZ370307534453QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item56380c8e75#ht_1708wt_939
Last reply by 70 Cam Guy, -
- 115 replies
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Well I am over the top excited to be getting a set of 4 screw SU's done by Ztherapy! I kept my current set of carbs on the car as to have a good set to baseline all my readings, then I can get the new SU's on start tuning. I know the quality of the products put out by ZT, I am looking forward to getting them on, but any advice and things I should do first. Also any helpful advice on pitfalls in removing the intake? Thanks! Signed one excited Z car owner.
Last reply by 70 Cam Guy,
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Wilbur
