silver280zx Posted April 4, 2009 Share Posted April 4, 2009 Ahh I knew I was forgetting something Raise the compression first, or the cam will do nothing but drain your pockets. Find a datsun maxima 810 mn47 head, and put 280zx valves in it, do like a 260 degree cam in it, and it should wake that motor up. Quote Link to comment Share on other sites More sharing options...
Redorae Posted April 5, 2009 Author Share Posted April 5, 2009 Military doesnt need to register thier vehicles in CA And I am not obligated to follow CA vehicle laws concerning what I do to my vehicle only MT's and there isnt much I cant do in MT Quote Link to comment Share on other sites More sharing options...
jogaZ Posted April 21, 2009 Share Posted April 21, 2009 Do this my friend is my combination: N47 or E31 Head with a Felpro Head Gasket Flat Pistons Pacesetter Header 3.90 Diff on 14" rims You will be fast enough If you want more power performance this cpombination with a MEGASQUIRT and you will fly for a N/A With N47 you will get 10.0:1 compression APROX With E31(best for me) you will get 10.5:1 compression APROX I have now th N47 combination and belive me is fast and cool feeling im looking now for the E31 Head Quote Link to comment Share on other sites More sharing options...
ZR8ED Posted April 21, 2009 Share Posted April 21, 2009 Lots of good ideas. Under 1K$. Best bang for your buck. Swap to a lower gear. if you have a 3.9, find a 4.11. You will feel that right away. A weber big throat throttle body is also seat of the pants noticeable. John has it right with the basic list of maintenance, It will make a noticeable difference. Keeping it under 1K$ is the trick, there are a ton more mods if you want to spend more. Quote Link to comment Share on other sites More sharing options...
chrismiller5157 Posted April 22, 2009 Share Posted April 22, 2009 what is the EFI? an what dose it have to do with the cam's performance?? Chris M. owner of a 1981 280zx. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted April 22, 2009 Administrators Share Posted April 22, 2009 what is the EFI? an what dose it have to do with the cam's performance?? Chris M. owner of a 1981 280zx. The EFI is the Electronic Fuel Injection. A system designed to deliver gasoline directly into the engine itself. EFI came standard on the ’75 and newer Z cars. The factory Datsun/Nissan EFI does NOT play well with aftermarket cams as it can’t be tuned around cams other than stock,i.e. the stock '75-'83 Z car EFI is programmed for the stock cam and is NOT reprogrammable. You see, a different cam changes the engines fuel requirements at varying RPMS and loads. An aftermarket EFI system allows the owner/tuner to “tune†the system, i.e. adjustable, thereby allowing you to tune or adjust the fuel delivery to match the engines needs. Make a change those needs, such as installing a different camshaft and you can adjust the fueling to match those new needs. The details of how and why are bit more complicated than that, but that should help explain the basic principles. Quote Link to comment Share on other sites More sharing options...
KayakTN Posted April 27, 2009 Share Posted April 27, 2009 johnc is right. I replaced the plugs on my car and the difference was night and day. They were pretty wore out. Quote Link to comment Share on other sites More sharing options...
chrismiller5157 Posted April 28, 2009 Share Posted April 28, 2009 Ahh i see, thank you for answering that for me. well let me ask this, is it worth the money to buy a stage 2 cam kit from "the Z store" that coast $800.00, am i going to get much out of it with a none turbo motor that is running very well as is? {new injectouirs, plugs, wire's, all new vaccum lines, blah blah blah} or is there somthing else i can do to make a diffrence in gitting more power to the wheels an spending 2 grand...note, that i plan on turbo'ing this Z in about 8 mounth's or that's the plan at least, but till then im staying tail happy:burnout: Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted April 28, 2009 Administrators Share Posted April 28, 2009 ...is it worth the money to buy a stage 2 cam kit from "the Z store" that coast $800.00 . The factory Datsun/Nissan EFI does NOT play well with aftermarket cams as it can’t be tuned around cams other than stock... Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted April 29, 2009 Administrators Share Posted April 29, 2009 HELLLOOOO...... helllooo..... hellllloooo..... Any body out there paying attention?.... out there paying attention... paying attention..... Quote Link to comment Share on other sites More sharing options...
Drax240z Posted April 29, 2009 Share Posted April 29, 2009 I am! Quote Link to comment Share on other sites More sharing options...
woldson Posted April 29, 2009 Share Posted April 29, 2009 Originally Posted by chrismiller5157 ...is it worth the money to buy a stage 2 cam kit from "the Z store" that coast $800.00 . Quote: Originally Posted by BRAAP The factory Datsun/Nissan EFI does NOT play well with aftermarket cams as it can’t be tuned around cams other than stock... __________________ Regards, Ron Friction is a drag. I GET IT........WOW! Quote Link to comment Share on other sites More sharing options...
zx_drift Posted April 29, 2009 Share Posted April 29, 2009 Megasquirt would solve that problem.. I know its mentioned before, but a tune up, big throttle body, cold air, electric fan, exhaust and an MSD makes a huge difference over stock. Removing some heavy stuff from the car (ie. AC, ASCD. etc) doesn't hurt either. Quote Link to comment Share on other sites More sharing options...
frank280zx Posted May 8, 2009 Share Posted May 8, 2009 A Big TB does nothing on a stock car! Cold air doesnt do anything (id made a 2 hp on my turbo car .. but the stock filter was clogged), MSD does nothing for a stock car, An electric fan doesn’t do anything .. it might rev more freely in neutral .. But for instant Bernard makes over 400 HP with the stock fan. And i see no reason to believe he would make much more with an electric fan. Stripping the interior does work .. but hey that is fairly radical for a street car. I dont want to be rude to all the people that say their TB and cold air made a diffrence .. it does not .. and if it does anything it is so marginal it is not worth it. I agree it makes the car SOUND faster. Judging from the comments made by you I suspect you do not have a lot of wrench time on cars in general, so this might be out of your league. Apart from John’s list id say on an NA Get a later 82/83 f54 flat top block from a junkyard, ($250) Bump the compression by bolting on your n42 head that you have now, maybe if you feel you are inclined enough clean up the ports a bit. Get a head gasket and manifold gasket ($100) Get a MSA Header. Get a mild street cam ($500 for the full set) Get your stock EFI tuned and be happy with the fact you do not use full potential. Optional: Get MsS, as Braap said stock EFI is a fairly simple system that allows for some play.. but would net get the full potential from the cam at hand, so Megesquirt is the way to go IF you understand the basics of what it does, and the dynamics in a combustion engine. Quote Link to comment Share on other sites More sharing options...
woldson Posted May 8, 2009 Share Posted May 8, 2009 The fan, and lightening up rotating mass gives you a seat of your pants increase. The fan is just a parasitic drag, not too noticeable, the rotating mass reduction is very apparent. THE ENGINE will NOT have a HP increase, of course. Quote Link to comment Share on other sites More sharing options...
zx_drift Posted May 11, 2009 Share Posted May 11, 2009 How could you say it makes no difference? If you drive a zx with those upgrades next to a completely stock one, you're telling me they would go the exact same speed and (if they were racing), get the exact same time? I've driven both, and know its not true. Quote Link to comment Share on other sites More sharing options...
johnc Posted May 11, 2009 Share Posted May 11, 2009 Just because one car can accelerate faster then another does not mean the faster car has more horsepower. There's that whole lower weight and reduced MOI thing that improves a vehicle's rate of acceleration without affecting the hp produced by the engine. Quote Link to comment Share on other sites More sharing options...
woldson Posted May 12, 2009 Share Posted May 12, 2009 Thanks, and yep. It is fun to wrap your brain around though! Quote Link to comment Share on other sites More sharing options...
smoorhs02 Posted May 12, 2009 Share Posted May 12, 2009 I have a f54/p90a in my 78 280z. I got a Fidanza flywheel and installed it. When I first drove it I had no fan, and could tell a noticeable difference with no stock mechanical fan, compared to having the stock mechanical fan installed now. I need to get an electric fan and install, but currently in the process of painting the car and will address that issue later on. Jeremy Quote Link to comment Share on other sites More sharing options...
hoov100 Posted May 12, 2009 Share Posted May 12, 2009 I have a f54/p90a in my 78 280z. I got a Fidanza flywheel and installed it. When I first drove it I had no fan, and could tell a noticeable difference with no stock mechanical fan, compared to having the stock mechanical fan installed now. I need to get an electric fan and install, but currently in the process of painting the car and will address that issue later on. Jeremy of course your car is going to accelerate faster with an aluminum flywheel and new clutch without the fan, vs the stock flywheel and fan, have you ever weighed a stock L-series flywheel against the fidanza????? and removing the fan you gain like a whopping .6WHP your ass dyno isnt worth the crap that comes out of it! ontop of EVERYTHING else its a STOCK 280ZX! its gonna be slow regardless of how much useless crap you throw on it! /rant/vent (why hasnt this thread been sent to the shed yet?) Quote Link to comment Share on other sites More sharing options...
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