S13 High port Vs S14 Low port

[Crab Walker]

For higher revving that is, I heard that the s13's sr20det high port desgin is better. Is this really true?

[mixxamike]

From what I have read, the red tops have more potential for making power. For what the average joe will be doing with these engines though, the difference won't be that big of a deal. The port design will come into play in the 4-500hp range. Another thing to consider is the variable valve timing in the s14 blacktops. This complicates tuning a bit (more so than the s13 redtops).

[Doriftomodachi]

From what I have read, the red tops have more potential for making power. For what the average joe will be doing with these engines though, the difference won't be that big of a deal. The port design will come into play in the 4-500hp range. Another thing to consider is the variable valve timing in the s14 blacktops. This complicates tuning a bit (more so than the s13 redtops).

I've seen s14 blacktops making 450-500hp. From what I've read the low port design is more efficient. It really depends on how much you wanna spend, bottom line

[synner_inu]

I've seen s14 blacktops making 450-500hp. From what I've read the low port design is more efficient. It really depends on how much you wanna spend, bottom line

if im able to get either the s14 or the rps13 black or redtop motor which should i go for if i only want around high 300s or low 400s rwhp and want to set up for drift and togue racing.

[nightwalker]

black top, newer motor, less chance of getting a really really old, stagnant motor. You'll thank yourself later when you hear about redtop horror stories.