Best n/a 2.5L build possible?

[E-Thirty]

And it's such a shame where Honda is going now...

[TwoJ's]

s14 vs. f20
http://www.e30m3project.com/e30m3per...ow-1/index.htm

Cool. I'd never seen that.

[nando]

so much misinformation....

my rx8 burns less oil than most e30s. about a quart every 3000 miles. its not even an issue. i never add more oil. i just change the oil, because its time anyway and im back to full.

and a rebuild every 20k miles? lol. i know a few people that have 15-20 2 day track events, and dozens of autoxs with over 100k on their motor. quite a lot of rx8s with 60k-80k miles with dozens of track events. its a newer car, so not a lot of really high mileage rx8s. highest i've seen so far was 186k. engine was still strong.

im at 60k, motor is still strong. maybe 3 dozen drag runs. a dozen autocross runs. and 2 track events. one of which was a 2 day event.

biggest killer of rotaries is driving like a granny. hitting the daily redline clears out excess carbon and prevents it from building up. so all those people who "never abuse the car and always shift under 3k rpm" are killing their engines. i really dont think hitting the redline once a day is such a deal killer.

you can argue until you're blue in the face, I've had lots of rotary friends. They're pretty good at pulling engines. It's like doing a timing belt change on an M20.

also, a quart in 3k is pretty high imo. Mine probably leaks half a quart, but it does'nt burn it. :p

[lennon]

How so?

because this is an e30 site;)

s14 vs. f20

http://www.e30m3project.com/e30m3performance/tech_articles/engine-tech/flow-1/index.htm

[Philo]

About $15k gets you a brand new Race S14 from MetricMechanic. @285HP

[884door]

Dollar for dollar, if you spent the same money developing a K24/K20 hybrid engine or an S14, you could end up at the same point, most likely. The number that gets bandied about is roughly 300 whp+ on a heavily worked 2.5L S14. This will bankrupt you, though.

I personally think the Honda motor would come out cheaper and parts are much easier/quicker to get ahold of.

If you started with an f22c those are like 247hp stock and can be had for around $3-4k. Obviously fully building a motor is expensive no matter what but the F series motor could make 300hp for a lot less money IMO.

[FredK]

How so?

Dollar for dollar, if you spent the same money developing a K24/K20 hybrid engine or an S14, you could end up at the same point, most likely. The number that gets bandied about is roughly 300 whp+ on a heavily worked 2.5L S14. This will bankrupt you, though.

[Rodoni]

But RD 24v head beats all at the rarity level ;)

Edit: I tried to email RD to see if they would reproduce that head. I got side tracked but I am still going to try. They might go for it if we get like a signed petition with money up front. I just thought it would be cool. Doesnt hurt to try, right?

[nando]

M20 stroker (2.8-3.0L) with a Racing Dynamics 24v head < all.

or you could get an m52b28?

[Rodoni]

M20 stroker (2.8-3.0L) with a Racing Dynamics 24v head < all.

[Kershaw]

it's also good if you enjoy rebuilding your motor every 20,000 miles. :p

And using as much motor oil as you are gasoline.

so much misinformation....

my rx8 burns less oil than most e30s. about a quart every 3000 miles. its not even an issue. i never add more oil. i just change the oil, because its time anyway and im back to full.

and a rebuild every 20k miles? lol. i know a few people that have 15-20 2 day track events, and dozens of autoxs with over 100k on their motor. quite a lot of rx8s with 60k-80k miles with dozens of track events. its a newer car, so not a lot of really high mileage rx8s. highest i've seen so far was 186k. engine was still strong.

im at 60k, motor is still strong. maybe 3 dozen drag runs. a dozen autocross runs. and 2 track events. one of which was a 2 day event.

biggest killer of rotaries is driving like a granny. hitting the daily redline clears out excess carbon and prevents it from building up. so all those people who "never abuse the car and always shift under 3k rpm" are killing their engines. i really dont think hitting the redline once a day is such a deal killer.

[884door]

still wouldnt compare to a worked 2.5l S14

How so?

[FredK]

how about a destroked and debored s85? Along with a cf monoque and a $40,000 steering wheel, wind it up to 19,000 rpm and itll make all the power you need.

Race in that class
i would love to

lol.

[blueapplesoda]

how about a destroked and debored s85? along with a CF monoque and a $40,000 steering wheel, wind it up to 19,000 rpm and itll make all the power you need.

Race in that class
I would love to

[lennon]

any of you actually stop and think this kid, with 1 post has no idea what he's talking about and instead of coming up with cool solutions; a combination of all our wishful thinking, we should understand what are his goals, why he needs high r3v and why in the world a 2.5L... i smell poser and ricer.

so, guy, what's the deal, what racing will you be doing, what are your power goals, what are your money and class limitations?

i thought all those things too, thats why i never really replied. what chassis, what class, etc... the op never even came back to this thread anyway.