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Stock- Which is the quickest?


ArnieTX

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240Z

or

280z.

and

for folks who have owned both 240s and 280s, which has been your favorite and why?

I've only had 280z-s. But am really intrigued by the raw 240z nature and it's loyal following. Soon I will have another Z, haven't made up my mind on whether to go with the 280 I know or tread the 240 waters.

Please help me make up my mind.

Thanks

Joe

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Every day I learn something new about the 240Z I'm restoring. The single most appealing thing to me is the shear simplicity of it all. Not much in the way of Bells & Whistles. But it captures everything that defines a true sports car. Easy to learn about (but you never stop learning) and easy to work on. Guess you don't stop doing that either! They just grow on you. I love them all, but just happen to have a 240Z. I am one of the members here that had the pleasure of driving one in 1970. I was smitten from day one. I didn't buy one back then, but my friend did. He made a regular habit of trading off his Z, so he could ride my bike. I got the better end of that arrangement. I guess it just takes me back to precious memories.

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Get yourself a 240.....you will love it,

I'm pretty sure the 240 is quicker, it's also lighter, but the experts on this site can let you know for sure.

Good luck in your search.

RM

FYI:

Max horsepower [email protected]: 151 @5600

[email protected]: 149 @5600

i believe the 77 280 made 170bhp and 177 ft lbs.

my self having had almost 100 z's of every year, love the 240 the best, only because it was the first and the smaller bumpers and cleaner taillamps.

but i do like the 280 interior better. and fuel injection is far better than any carb setup.

i may love the z32tt just as much as a 240 though. there just so much fun.

tony

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SNIP.. fuel injection is far better than any carb setup.

tony

I don't believe I buy that one.

Being a 240 guy for many years just never could come to like all the extra stuff in the 280 and on. Nice cars just not what I think of when we are talking sports cars.

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I don't believe I buy that one.

Being a 240 guy for many years just never could come to like all the extra stuff in the 280 and on. Nice cars just not what I think of when we are talking sports cars.

i am not saying a stock set up.

but i will say the 280 efi was very good for 75. if you understand how it works and how to diagnose whats wrong with it when it breaks, its way better than some 100 year old technology. basicaly a carb is nothing more than a gas can with ahole in it on top of a manifold. poke the right size hole in it and it will run.

now dont get me wrong, i have had a very nice 45mm triple sk carb set up on a 280, and it was pimp. nothing sounds like that did.. but put some individual throttle bodies on the same motor with efi and you will make more power.

look at the cars today.

more power comes from a computer giving each cylinder exactly the right amount of fuel. no carb could do that(although gm and ford tried).

most people just dont understand how efi works and why it needs so many parts to make it work.

o and to answer the original question, both the 240 and 280 stock would be fairly close in a 1/4 mile race.

most of mine were never stock or at least for very long. besides, stock sucks.

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There was a link to a YouTube video clip here once, where they had a whole bunch of different model Zs racing...

And the 260Z won!

I don't think there was a 300TT in the lineup tho

I was thinking about that too, here's is the link to the video if you want to see it. I heard that there was a full version of it out there, and I've searched just about everywhere still can't seem to find the full version to it if there is one.

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EFI better then any carb setup, LOL, dude you are so funny!!!!!!

They still use carbs in some of the most powerful motors that drag race, ect. I have a friend whos dad works on drag race cars and works on carbs a lot.

The HP ratings on the 280 seem to be all over the place. From what I have read the 240z is 151hp, and when the 260 came out still on carbs the power was upped to 165hp. Though when the 280 came out, it was on EFI and it was down graded to 132hp for the first year and then went back up to 149hp the next year. Then the turbo came out and upped the power to 180hp.

Basically, the 280z ended up getting hit with every single federal smog restriction because of the 70's gas crisis and is one of the reasons why EFI was added a long with many other emission control systems.

Plus with the added weight of the 280's, only the 280z turbo is as fast as the 240z from what I have read.

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There was a link to a YouTube video clip here once, where they had a whole bunch of different model Zs racing...

And the 260Z won!

I don't think there was a 300TT in the lineup tho.

No, the 300ZX TT won,

2nd was the 350Z,

3rd was a very modified 260Z.

The factory quoted HP numbers mean nothing, as they changed they way they were measured for the 280Z or 280ZX, so you can't compare them (do a search, theres lot of info about it on here) , also the US 260Z had a different power rating to the 260Z should in other countries.

Also don't forget the other important factor - weight.

Maybe someone should post the weights of each model

Power to weight ratios for each model would be more telling, than just power ratings.

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Don't get hung up on the little badge in the engine bay that says what the HP the engine has . Rear wheel figures is what counts . Where the rubber meets the road . Or the meats meet the road , so to speak , LOL . There is a member here that has a '70 240 that he built the engine in his home garage . He is running SUs and street tires. He drives the car to and from the drag strip and as a pleasure driver. He turns in the 12s in the 1/4 . Pretty good for a 100 year old can with a hole in it technology. I grant you the engine is built but is NOT running any turbo , just two SUs . No triples no injection just SUs . Injection is fantastic for drivabiltiy and will pass emissions . The computer does the thinking for you when the engine is cold or if you go from low to high elevations, it sets the mixture of fuel to air. I am not anti injection at all . I have three vehicles with it . But don't discount the use of the SUs on these Z engines. Rememer the engine design is old technology too. Gary :knockedou

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my take:

there is a listing somehwere that R&T or C&D had that compared the 1/4 times of each car. starting with the 240Z as being the fastest and so on and so forth. that 1/4 wasn't beat until the 280ZXT. if i had the time to look i would find it and post it.

as far as the FI vs carb argument? i love carbs. whether it's in my food or my engine bay, gotta have 'em. but FI, when properly tuned, will be superior. that's it. to argue that carbs are more efficient or have the potential for power is an erroneous claim. a good FI can do everything a good carb setup can do and them some. 'nuff said.

EDIT: i suppose i should edit this so people don't think i'm SU bashing. i love my SUs and don't get me wrong. after studying this issue for a while it just becomes obvious.

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