2nd Gen Rocket, It would be cheaper to buy the Renny rotors than having your rotors lightend, that is one hell of an expensive task.
And I don't think the higher c/r will need a complete stand alone, although I plan on getting a MT any way, you could probably get away with a SAFC.

 

if you buy a single rotor your looking at @ $100 more, this is from Mazda, so a set ( meaning two, would be $380x2.. as opposed to buying two singles at $480/per, I buy allot of FC parts through these guys so they give me a good deal on the 'set') I'll check the options mag again for an exact weitght difference but I beleive it was .89x kg per rotor, for anyone who gets the mag it's the Sept issue.

now, on to more distasteful subjects..

RETed.. i don't what planet you dropped off of but .5 compression jump does NOT require a stand alone ECU.. if it does for you then spiffy for you, but for most others it does not. As for that ' NA owners don't have money ' .. your quite an ignorant 'pommy git aren't you. You take someone question about rx-8 rotors and turn it into an attack on not only him but all NA owners and anyone even hinting at using rx-8 parts.. maybe you should contact options2 magazine and tell them they are all poor for having a NA FC as thier build car for the last few years. I'm sure they tell you to stick a split bamboo pole where the sun don't shine.

.. most TII's don't 'feel' ( I'm assuming you mean 'make') 250hp at 3000rpm so what's your point? Nowhere did he say he expects to get 250, you assumed that , like everything else in your little tirade. All he wanted was an idea of the possible performance increases for the money spent.

 

Man I'd love to see someone do this and post a dyno.
the torque curve would be so nice!


The idea alone makes me love my NA even more now.

I talked to my mechanic about it, he stocks Renesis rotors. and thinks it'd definetly be worth a shot

 

Guys, keep this topic friendly or it's gone.

 

it just sounds like an awful lot of work for nothing when theres tons of other things you could do to get the power, as everyone else said, a turbo is one way to go, might as well port it too. its just alot of headaches for what real gain you might get. But if ya wana do it to say you have renasis rotors then thats fine but i think youll end up spending a ton of money for very little for a power gain or you <u>might</u> loose your engine.

 

Dude, you have no clue...


-Ted

 

Wow, big words. $20 says you don't post anything about this by the end of next year. You got time on your side/


Maybe I'm just cranky cause I couldn't finish all of my projects here in CZ, and I leave in 3 hours. You just don't get it - all I see was the insult, and everything else got lost in the wind.


-Ted

 

Define "mazda's race cars"?


Can you qualify that? I believe the PP exhaust port is about 100 degrees more duration than the MSPRE, and taking two 90-degree bends to exit out the engine is not what I call "optimal", so matter how big the port is...


-Ted

 

Oh pulease...
You know how much money I've sunk into my 1987 Turbo II? I lost track after $15,000...

Now do you feel cheap?


-Ted

 

So you're implying that anyone can drop these 10:1 compression ratio rotors into an NA FC with the stock ECU, and have ZERO problems running them on the street? Can you qualify this please?


That was a generalization - if you can'tg figure this out, you need to take some comprehension classes or get thicker skin. In general, turbo FC owners spend more money on their cars than an NA owner. I can't even count how many turbo FC's I've worked on, but NA owners are non-existant - why? Cause they can't afford to pay.

Option 2? You mean the magazine that shows you how to use black shoe polish on your tires to keep them shiny? Boy, don't make me laugh... So, I can assume you can read Japanese then?


Sure, it's an assumption. I've seen too many guys get caught up on the new RX-8 and "want that kinda power". Little have any clue that 1) power mostly comes from the higher redline, and 2) the RX-8 has been dyno'ing under initial horsepower figures. I believe an MSPRE was just sold on eBay for like $5,000+,, so you're telling me the typical FC NA owner can afford something like that?


-Ted

 

mmmm.. you're righ ted.....

since i have a $1500 bucket seat.... i'd have to conclude that anyone w/out a $1500 bucket seat is a cheap ***. as matter of fact... you just might be a cheap *** too!!

and i just did a NA to turbo swap... so i'm no longer a cheap ***!!! yeah~~!!!

it's ok to be cranky... but don't blow it up on others.

 

This is just to qualify my statements that I've made on this thread, since it looks like I've stepped on some toes...

I'm tired - I get to look foward to a 25 hours flight in a few hours just to get home. I didn't get to finish two more Haltechs, and I've just wasted 6 hours trying to get one running. I'm tired and frustrated.

With that said, my comments were generalizations. Sure, you've got FC turbo owners who eat mac&cheese and instant noodles for every meal for the past 5 years. There are exceptions - do I need to put this as a disclaimer? In GENERAL, turbo owners spend more money on their cars that NA owners. If there is someone who disagrees with that - please, I'd like to hear your rebuttals.

TALK IS CHEAP. I hear a lot of bullshit that's not proven. Come on people, why don't you just do it and throw it in my face. Wouldn't that be satisfaction enough? Maybe I've just seen too much BS in here, and it just carried over into this thead - duh. If I've stepped into deep doo-doo, and you guys are really seriously going to try this stuff, then my deepest apologies for doubting your intentions. If not, let's keep cranking up the BS meter...


-Ted

 

i agree ted... seriously this time....

people bs too much... this forum or not... especially when it comes to cars....
i can't agree more man... people talk too much scmack about car projects... i'll crank the bs meter w/ you on this one... until i see it for myself.

and yes, i also agree that turbo owners generally spend more then na guys, but i think it's nothing to do w/ whether they have turbo or not, but the fact that na owners bought an na fc, which says something about their personalities. turbo guys bought themselves turbo fc's... which also tells something about their characters. i think people who own turbos generally have the characteristic of spending more cash on their rides.. period. fc or not.

 

obviously i caught you on a bad day and i apologize for any offensive statements i made directed at you but i still stand behind my questions posted as this is something that i have full intentions of following through with as a friend of mine who has a great amount of experience with rotaries is going to assist me with it

no point in having a pissing contests on the forums and i am going to hunt you down for that $20 and would that be U.S. Dollars cause that would make me a pretty rich canadian

 

RETed"You know how much money I've sunk into my 1987 Turbo II? I lost track after $15,000..."
you should be sooo sooo proud! I Know I would feel like champ...! i guess i'm biter that i haven't wasted 15 g's on my car.

 

How much did you make in the last 4 months? Guess how much I made the last 4 months? I made a little more than 2k dollars as I work for my university. I put just about all of that cash into the car. And this is just in the past quarter. All in all my car has got almost 5k dollars in it in only 1 year and some months. If I had rotary god money then I would have the Renesis in my car. No BSing here either man. I have billing statements and receipts to probve my build for this fall. I don't consider the dollar amount I spend cheap since it is a VERY large part of my total income.

 

I think retard.. err reted has a wee bit of a git problem, it seems tht he see's things through a much clouded lens that filters out any sort of reality but his own self induced one.

As soon as rx-8 rotors become available In Canada, ( as none of the Canadian or US warehouses show any in stock as of last wed. ), I will install these in both an S4 and S5 motor. At most I see a 1 point of octane increase, possible SAFR/AFC adjustments and maybe 2 degrees of timing for the S4.

"TALK IS CHEAP. I hear a lot of bullshit that's not proven. Come on people, why don't you just do it and throw it in my face. Wouldn't that be satisfaction enough? Maybe I've just seen too much BS in here, and it just carried over into this thead - duh. If I've stepped into deep doo-doo, and you guys are really seriously going to try this stuff, then my deepest apologies for doubting your intentions. If not, let's keep cranking up the BS meter..."

hey reted.. your " TII is holier then all the rest " crap is getting old, are you really that insecure about your TII ( or your own self worth?) that you need to step up onto a soap box and proclaim that becuse you spent $15K on your TII anyone else who did not or anyone else who doesn't own a TII is SO much less then YOU..

If you don't like NA's then don't comment in a threat that's NA oriented. i'm sure those with NA's don't really feel like hearing you blow off about how poor you perceive them to be because your ignorant bias attitude.

 

I don't want to really get in the pissing contest.

But in GENERAL I'll admit that Reted is right, NA owners do have less money than TII owners. So what? Yeah I'm a broke student, but I still think Renesis rotors would be a cool experiment.

I do know that Forced induction simulates a rise in displacement and compression ratio.

In a lot of racing applications turbo's were shunned out because they're just an extra piece that can break during racing. One simple solution is to run high compression rotors. Changing compression in a rotary is different than a banger, and harder. Which is why mazda went turbo for production cars. They didin't want to put the R&D into a larger engine.

Notice how the epitrochoidal dimensions of all mazda RE's are basically the same. all they keep doing is increasing housing width to up the displacement.

I kinda got off of topic...so I don't really have a point.

Turbo's are great for street and the odd track run. But for a 100% track car High compression NA is the way to go. Unless you can show me a forced induction system with an efficiency of 100% and absolutely no lag.

Me I like NA because they're cheaper, more reliable and can still haul butt. I'd rather own an NA RX-7 than No RX-7.

 

Sure, we're all human. Humans have distorted views of reality no matter how objective they try to be. Even 2D photos have induced prejudiceness, but that's for some college-level photo classes to discuss. I'm not going to get into a big metaphysical discussion on perceived notions...


If I remember correctly, a "point" of octane is actually 0.1, and I think you're trying to describe a 1.0 increase in the octane number.

So, you're admitting you're dialing back the CAS to compensate?


You know what's funny...it always ends up being a turbo vs. NA argument. I think you're the one with the inferiority complex. I have nothing against NA's. I've driven them, and I have no beefs with them. I've tried to project what my experience with both models have taught me, and somehow that always insults NA owners. You know, this always tends to happen with NA owners who have never driven a turbo. Most of the NA owners who have been in a turbo have admitted that the turbo is a much faster (therefore "better") FC...


Sure, if you're going to play god and pick who can comment on your threads or not, then I'll bow out of this one. There is nothing useful I can offer for this thread, so there's not reason for me to keep replying anyways...


-Ted

 

Name one person who owns an NA who has spent over $10-15K on their car. Yes the average and most extreme na owner doesnt have or spends the kind of money that turbo guys spend.

This is true. If your running 91 octane and raise it 1 point it goes up to 91.1.

 

Well before this one starts sinking uncontrollably down the board due to moderator intervention . .

On the ECU issue . . just adding a header, intake, cat back or any worthwhile mod makes the stock ECU start running funky. Add a street port and get ready to max out the air flow meter . .

Higher compression ratios, theoretically, produce more power for the same amount of air / fuel mixture, so adding 10:1 rotors in place of 9.4:1 rotors might not exacerbate the ECU's limitations due to not being able to ingest any more air / fuel, even though they might be able to produce more actual work at the crankshaft. (via less rotating mass and more efficient combustion.)

And I don't care what anyone says. Ted has the best avatars!

My $0.02 . . the engineering student's perspective.

 

with nothing but an exhaust an 89 na afm is maxxed out around 7k, my gsl-se maxxes out at 4.5k.

mike, err dammit i'm still steve, sorry.

 

I think people are missing a HUGE point.. thier isn't more then $4k in NA parts you can buy to improve the NA's power. So how can somone spend $10K if thier's not $10K worth of parts to buy? NA's are prolific and cheaper to insure, the cost of owning a TII vs. NA in Canasa is more then 3x in Ins. costs alone. NA's CAN be converted to TII but maintian the NA VIN.. which to me, makes NA's infinitly more valuble then an 'actual' TII.

You obviously understood what i was saying so why try to be obtuse about it ??

admitting ?? where does that term apply to anything that's been discussed?

it wasn't an argument or a problem till you shot your mouth off..

Do you read what you type?

.. and you don't have an issue or problem with NA's or thier owners.. riiight... git.

 

Yo,


*raises hand*

Heh.

Wait until I get my new wheels and tires...even mo' money!!

Kevin
1989 GTUs "Does that include the cost of the car, or just pure mods?"

 

Way to go children...