240z to 280z head...
#1
240z to 280z head...
ok i have a 240z engine. (l24) and i was thinking what benefits or cons i could get of putting an l28 head. would i have to do any mods to do this. if so what would i have to do specify please. THANKS. the head im putting had ROUND exaust ports. THANKS
#2
I think you have to knotch the cyclinders for the larger valves/smaller bores. You can use the same intake/exhaust. See more on this at www.zhome.com.
#9
If you just want to kind of play around with different combos and see what the numbers would look like, try to get a hold of Lengine.exe from the Sydney Z Car Club. I think Blue or somebody over at zcar.com had a program for interchanging L engine parts, too. I think their both copyrighted, though, so you probably won't find anyone just posting them (shouldn't, anyway...).
Dave
Dave
#13
It's a program one of the Sydney, Australia Z-ers put together awhile back. It used to be on www.zcarclub.com.au, but searching around there now I don't see it. Somehow, it seems to have moved to Canada, in that nice collection of TechTips from the guy that goes by Blue: http://www.atlanticz.ca/zclub/techti...are/index.html
Definitely nice to have for playing around with different builds in theory, before you have to start committing money and time.
Note that it does have a copyright date and notice on it, so it really shouldn't get posted, or it can cause a world of trouble. Given the link is freely available, there's no need to post the program anyway.
have fun,
Dave
Definitely nice to have for playing around with different builds in theory, before you have to start committing money and time.
Note that it does have a copyright date and notice on it, so it really shouldn't get posted, or it can cause a world of trouble. Given the link is freely available, there's no need to post the program anyway.
have fun,
Dave
#16
Originally Posted by Superduner
it does'nt tell me the horsepower or torque or nothign that i can make by running a certain setup... whats up with that..
#20
Originally Posted by Superduner
i understand but i thought that that program would give me an estimate at least from the choosen setup i would choose from the parts i would be running. but i guess not
#23
the P90 is the best flowing out of the box. The large valves and ports have the potential to flow a lot of air. Not the best for high compression though with it's large combustion chambers. It's combustion chamber design is also advantagous over earlier non P series heads.
#24
so wich one would be a better PERFORMANCE ( OVERALL) better head. the
E88 mentioned by EMO or the P90 from the 280zx? seems like a fair debate.... But seeing that i WILL need this informaiton in the nearby future for my new engine project it could come in handy for somene to answer that question.
E88 mentioned by EMO or the P90 from the 280zx? seems like a fair debate.... But seeing that i WILL need this informaiton in the nearby future for my new engine project it could come in handy for somene to answer that question.
#25
Unless you're only looking for a quick bump in compression I'd go with the P90. Its combustion chambers are optimally designed (for the era anyways) and the large valves and ports help it to outflow previous heads. Just look at it this way: The P90 was designed for the highest output L series engine available: The L28ET.
The question is are you willing to spend the money to optimize your engine to work with that head. You'll have to raise compression (or go turbo ) if you want to make decent power out of it. The whole premise behind putting an E88 on an L28 block is that it will raise the c/r, which in turn raises power output. If you're building a street car and just want a quick power fix: E88 (and remember, it's only the early E88 thats even desirable).
The question is are you willing to spend the money to optimize your engine to work with that head. You'll have to raise compression (or go turbo ) if you want to make decent power out of it. The whole premise behind putting an E88 on an L28 block is that it will raise the c/r, which in turn raises power output. If you're building a street car and just want a quick power fix: E88 (and remember, it's only the early E88 thats even desirable).
Last edited by jfairladyz; 09-12-2006 at 09:08 PM.