datsunlover Posted December 4, 2003 Share Posted December 4, 2003 Here's my deal: I want my car to run well/reliably for street use. I need it to have decent power, and be easily tuned. I may possibly do some late night street racing , but no autocross/drags: it will be a daily driver. My car is a 75 280z and I have a failing EFI system. (AFM is shot, ignition is in trouble) and have (as I see it) two options at this point: 1: I could Buy/build a Mega squirt system (which would take care of the ignition as well..) Or... 2: buy/built an intake manifold and put carbs on it. I want to keep the stock L28 for now, as the rest of the car needs restoration/work and I am trying to keep this project from 'snowballing' into an ongoing "V8 swap, body kit, mod this and that. " kind of thing. You know how projects go! Anyway, what are your guys thoughts? Quote Link to comment Share on other sites More sharing options...
randy 77zt Posted December 4, 2003 Share Posted December 4, 2003 i helped a friend build a scca its z with l28 and we took off the l28 head and installed a 240 head with round top su's.more hp and easy to work on.the is a company called z therapy that makes parts for the su's.i would not consider any other carbs for a street z.i have a friend with a 3.1l robello motor in his z with su's and it keeps up with my turbo car at thunder hill.wouldnt mind trying to build a high compression 3.1l with aftermarkit efi though-a nice simple car. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted December 4, 2003 Share Posted December 4, 2003 EFI all the way! Carbs are cool if you want to be nostaligic but in this day of technology....there is only one choice....EFI!!! Yasin Quote Link to comment Share on other sites More sharing options...
Xander Posted December 4, 2003 Share Posted December 4, 2003 Don't forget that if you go carb you will also have to get an mechanical advance system for your ignition. I have put more than 10.000km ( about 6000 miles) on my megasquirt. withou a problem. No Megasquirt problems that is. Quote Link to comment Share on other sites More sharing options...
johnc Posted December 4, 2003 Share Posted December 4, 2003 You have a thrid option that I would recommend: 3. Replace the worn out stock parts with new. If the engine is basically stock you're not going to improve performance with either carbs or an aftermarket EMS. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted December 4, 2003 Author Share Posted December 4, 2003 3. Replace the worn out stock parts with new Well, this will get quite expensive when you consider I need an AFM, tps, water temp sensor, a new distributor anyway (gona go with a 280zx dizzy) and the wiring to my fuel pump has already been butchured once (before I owned it) and the pump runs constantly when the key is on. If I'm gona rip into the electrical to find/fix that problem and others (there are a few 'hack' wiring jobs in this car under hood and inside; taped wires, broken clips, ect) AND buy all new sensors, I'm looking at a lot of time/money and will still have an out of date system that is expensive to fix/maintain. And going to carbs or a mega squirt FI will give me the flexibility to adjust for mods in the future. I should have said this in the first post I supose... but I would like to get a header, do some head/cam work, and maybe turbo it someday. It will be stock for now, but If I want to start adding HP down the road, I need to be able to tune/adjust it to take advantage of any performance add on's I get/build. I would think the stock system would be hard to tune, and would NOT respond well to boost conditions/head work.. I am leaning towards the FI, partially because I like the idea of building stuff, and it would be easily tuneable. (I hate that stupid AFM!) and I do not have a very good knowlege base on carbs.. Quote Link to comment Share on other sites More sharing options...
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