monsween Posted February 3, 2015 Share Posted February 3, 2015 Hi, I'm a 240z owner from Scotland that's purchased a Datsun running a 1405 edelbrock. It's seriously overfueling and ive purchased a fuel pressure regulator to fiddle with this weekend however i was wondering if anyone here has any experience with them. I assume the engine is standard internals with this thing bolted on and the carb is running standard jets. (Wont know until i get them out) Any help or advice on this one would be great Cheers Kieran Quote Link to comment Share on other sites More sharing options...
NewZed Posted February 3, 2015 Share Posted February 3, 2015 That's a lot of carburetor for an L24. http://www.edelbrock.com/automotive/mc/carburetors/performer.shtml http://www.edelbrock.com/automotive/misc/tech-center/?query=1405&submit=search The manual says no more than 6 psi - http://www.edelbrock.com/automotive/misc/tech-center/install/1000/1405_manual.pdf Could just be a bad needle and seat or a sunk float. Quote Link to comment Share on other sites More sharing options...
monsween Posted February 3, 2015 Author Share Posted February 3, 2015 That's a lot of carburetor for an L24. http://www.edelbrock.com/automotive/mc/carburetors/performer.shtml http://www.edelbrock.com/automotive/misc/tech-center/?query=1405&submit=search The manual says no more than 6 psi - http://www.edelbrock.com/automotive/misc/tech-center/install/1000/1405_manual.pdf Could just be a bad needle and seat or a sunk float. I'm hoping that my problem is it's firing a lot more than 5psi in it and the 1-5psi regulator i've bought will sort me right out. If not i'll need some recomendations on a jet for it. Quote Link to comment Share on other sites More sharing options...
NewZed Posted February 4, 2015 Share Posted February 4, 2015 I think that carb is too big for the engine. The typical carb is the 390 CFM Holley. Might be better off to get the right size and tune it for the engine. Might save you a lot of time. Quote Link to comment Share on other sites More sharing options...
Redwine automotive Posted February 4, 2015 Share Posted February 4, 2015 The 1405 is rich on a 350 chevy,if u have vacuum secondarys you can adjust it to work its a very simple carburetor.let me know if i can help. Quote Link to comment Share on other sites More sharing options...
monsween Posted February 4, 2015 Author Share Posted February 4, 2015 The 1405 is rich on a 350 chevy,if u have vacuum secondarys you can adjust it to work its a very simple carburetor.let me know if i can help. I'm going to be fiddling with it on Saturday so will update the thread regardless of getting it working Quote Link to comment Share on other sites More sharing options...
Tony D Posted February 8, 2015 Share Posted February 8, 2015 In the old days of cheapness, be would take the big jets out, heat them with a LPG torch and solder the jet hole solid. Then re drill with the smallest jet-drill you thought would work, and trial & error work it from there until optimized. Then buy a set of proper Holley Jets. Then move on to transition tip in on the vacuum secondaries and the metering rods...argh! Quote Link to comment Share on other sites More sharing options...
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