RETed

Yeah, you are gay - you said it, not me.
Lighter rotors allow for more airflow due to them being lighter!
Man, that's gotta be a revelation!

A 0.5 lbs. difference is not going to affect airflow.
The rotors are approximately 10.xx and 9.xx lbs.
5% weight difference affects air flow?

We're talking about an NA motor, right?
Engine is SUCKING air IN.
Unlike a turbo motor where forced induction pushes air in, you MIGHT have had a chance in that case (NOT!), but wasn't the thread about an NA?

So why aren't we all running ultra-light rotors for better airflow???


-Ted

SS124A

um, because at a certain point rotational inertia is a good thing.

It would be cooler if we could get martha stewart to say something to that effect

RX7goZoomZoomBoom

I can't believe you are trying to event take that rout in rebutle.

The truth in the matter is that a NA s5 rotating asssembley will need more flow that AN S4 ROTtating asembly simply for the fact that it is lighter and is more capable of higher reving.
(DUH!). I was only being Gay because your inexperience was causing me to state the obvious. the S5 rotors spin faster so they need more air YAAY this is a simple consept. When you hit the gas do you notice you use more gas that is your ecu telling you that it is getting more air to so it is using more gas to even out the fuel ratios. (air to fuel) Idealy 14.7 to 1 any way you have lost your mind tring to fight this topic with me, Totally drunk and pre-occupied with females I can counter your reply in only seconds.

NZConvertible

If you think 14.7:1 is a good idea "when you hit the gas", then you shouldn't be arguing with anybody about anything to do with modding and tuning engines.

Wow, spot the teenager...

RETed

You should really stop.
You're just making yourself look more stupid.
Hey, I thought you were gay?
Aren't you supposed to be preoccupied with the guys?

Oh wait, I get it...you're female and you're lesbian...


-Ted

SonicRaT

iTrader: (6)

You really need to get a clue. A s5 rotors sitting at 2500rpm will 'flow' equaly with s4 rotors at the same rpm. You seem to believe that just by changing the speed at which the reach a certain rpm means the magically need more air. This is quite wrong. The only thing that would be different is intake velocity, sucking the same ammount of air faster. It is growing increasingly obvious though that you're nothing more than a Troll who just likes the attention of arguing and acting like a moron with people who obviously know what they are talking about.

RX7goZoomZoomBoom

I don't like to argue especially when the claim I am making is so ******* obvious.
It seems you are not reading the words I am typing. SonicRat, understand this The series 5 assembly is more capable of a 9k+ rev due to lowered weight value and a more precise machined balance in respect to an s4. The S4 assemblies are a little heavier and not as capable of spinning out to 9k+. This is not saying that they can not but with out modifying the assembly first the S4 rotors are lower revving on respect to an S5 which can better tolerate revs. This point is a simple one and when I was drinking with my friends I omitted it from my reply. I guess, in your juvenile thought processes you never saw my appeals to reason in my replies. I never once instigated violence but the last couple of replies that I have read have turned my cookies to say the least. I also stated that the Ideal fuel ratio is 14.7 to 1 which in most rotary engines is very lean and will warrant det. and melting condition due to developed hot spots. I only said this because in all reality will Ideal burn conditions and 100% accountability in a compression cycle that would be the proper mixture. Plus I wanted to see if anybody would try is LOL. J/K but you and I both understand that we don't live in an idealistic world. Don't feel bad about this whole thing I'm sorry It's my fault I didn’t go slow enough for you.

SonicRaT

iTrader: (6)

The problem is, you're now arguing two different things. Yes, you are true in everything you stated above. BUT, just because it is lighter and spins 'easier', per say, it doesn't mean it FLOWS more.

SS124A

I think what he is saying is the engine itself would need a better flowing intake system... because it (the S5 version) flows better than the other (S4 version)

ViperDude152

for the OMP . why not dismantle the "pump" part of the OMP and put bolts in where the oil lines go. I know there is no "driveshaft" in the electric omps... but there has got to be something

I have never seen a S5 OMP but i know on a S4 you can remove the drive shaft of the omp so it doesnt pump oil into the engine and you can leave the oil lines on the omp also.

RETed

Wrong.
BTW, NO FC3S motor can rev "9k+".
Zenki non-turbo 13B stock rev limiter at 7,000RPM.
Kouki non-turbo 13B stock rev limiter at 8,000RPM.
If you're revving beyond that, you're a dumbass.
The engines, especially in stock form does not make significant power that high up.
The Zenki non-turbo 13B can be easily revved up that high, but it doesn't make power at those RPM's, so why bother?


That is not the only factor.


It really has nothing to do with the "assembly".
The newer VDI intake manifold allows it to make a little bit more power.
The Kouki stat gears are ion-nitrided for better wear.

You can swap in a higher rated OPR on a Zenki non-turbo 13B, and it'll rev all the way to 9kRPM no problem.

Bottom line is Mazda did this to project the "new" Kouki FC3S non-turbo as having more power, when it really doesn't.
Think about it...
146hp with a 7,000RPM redline
160hp with a 8,000RPM redline
Would you really buy the newer FC3S non-turbo if it was only...say...150hp with the same, old 7,000RPM redline?

This is the same **** Mazda did with the RX-8.
Bump up the redline up to 9,000RPM so they can print a higher horsepower figure...


-Ted

Boost Lee

iTrader: (3)

I've got an S5 Turbo with an upgraded ROM that doesn't require the TPS or the OMP to run (i.e. no limp mode when they are disconnected). This may or may not be a good thing. If you have a method of supplying oil through the metering lines then you need not worry.

I bought the ecu from a friend in japan. I've got a copier if anyone wants to see.
The ecu also features removed fuel cut and somehow achieves more midrange power (+timing and +fuel) I'm guessing.

RX7goZoomZoomBoom

RETed,
"""Wrong.
BTW, NO FC3S motor can rev "9k+".
Zenki non-turbo 13B stock rev limiter at 7,000RPM.
Kouki non-turbo 13B stock rev limiter at 8,000RPM.
If you're revving beyond that, you're a dumbass.
The engines, especially in stock form does not make significant power that high up.
The Zenki non-turbo 13B can be easily revved up that high, but it doesn't make power at those RPM's, so why bother?"""""

I'm sorry, I never said stock but the truth is that a well matched S5 rotating assembly from the factory will pass DYNAMIC BALANCE test at 10K. So they are very capable of 9K+ if the engine has been assembled correctly in respect to bearing clearances. As long as the assemble doesn’t have a verb transfer (otherwise known as rotational frequencies This only applies to old school balance machines)over the vibration magnitude max. value then everything will be ok. As soon as you exceed your vibration magnitude max. value then you will cause damage to bearings due to failure of the oil pillow wall. The Pillow wall created by the oil pressure can only hold so much. ""All I am trying to establish here is that the S5 assembly is capable of 10K no problems from the factory with a good clutch and flywheel setup that keeps most of the caring mass in the center."" RETed is right on stock ports you would be wasting your time completely. But the nature of the rotary is very different from that of a reciprocating piston type engine due to its ability to flow especially at high rpms. RETed is also right in the fact that Mazda has lifted there hp numbers by raising revs. Mazda has done this for years and only because it is the easiest way to get more power out of their very capable engines. I never once said I was running stock ports in any of my engines. I actually stated the contrary I told you That I had a mixture of parts from different cars (my biggest hint) some not ever sold in the US. I respect you RETed because you and the other senior members of this forum have done so much for the rotorites (rotor people).
But I will not back down when I know I am right and I will not be defamed by any one for any reason.

NZConvertible

Defamed? Dude, go read a dictionary...

RETed

How about look up "lost cause"?


-Ted

RX7goZoomZoomBoom

de·fame ( P ) Pronunciation Key (d-fm)
tr.v. de·famed, de·fam·ing, de·fames
To damage the reputation, character, or good name of by slander or libel. See Synonyms at malign.
Archaic. To disgrace.

RX7goZoomZoomBoom

Hey, on a side note does anyone know the cheapest cost "new" coilover kits (not ground control, which is good but not what I am looking for) for the FC. I found a place called SPD who sells Tein HA's for 1000 Shipped. I need the best deal I can get. I found out they are changing class regulations again.

kiyoshi

But I believe those extra 2000 rpm gives some people much more fun to drive it (I am not talking about HP numbers)