Falken

I'm sorry if I'm being ignorant but what's the difference between 2009 engines and my current renesis??

daisuke

it has a redesigned oil injection system that will lubricate the apex seals better, it now has 3 ports instead of 2 iirc

swoope

iTrader: (5)

funny,

my guess is few will know how accurate that is!!

sealstrodomus says you are strong.

beers

swoope

iTrader: (5)

what do you know???

answer the ? will the engine bolt to the rx8 bell housing 04 to 09????

predict the future!! please!

use your mad google skills..

beers

Falken

Efficiency? Reliability? Power?

daisuke

Lubrication, the current configuration isn't allowing enough oil to get to the center of the apex seals


read this thread to get the detailed version

https://www.rx8club.com/series-i-tech-garage-22/renesis-engine-issues-finally-identified-138114/

Falken

I think I'll wait until the 16X. My engine likely will not be dead before 2010 at least.

sosonic

If you are looking for 16X type power today, than also check out the 20B RENESIS

Link- https://www.rx8club.com/showthread.p...&highlight=20b

EdwardsB

why not just turbo the renny...you can have the power now

Falken

Efficiency. I've heard that the 20B gets single digits and with my current Renesis getting under 180 miles/tank I can't afford to lose any more efficiency. A turbo would also decrease the mileage, more air constitutes more fuel or else the engine runs lean. Thus the two options are mathematically similar, in both power and efficiency. On top of that, why waste 5k+ today to change to that engine or a turbo when I would have to switch to the 16X later anyways, which gets the same power with over 20MPG?? Thus I see both the 20B and a turbocharger as illogical investments at this time.

Even despite the math, you don't have to be a rocket scientist to predict that I would be kicking myself over getting a turbocharger or 20B when a few years later, with the same money, I could have bought something better in every way.

"But falken, why don't you just turbo the Renesis or get the 20B and than stick with it, why do you HAVE to get the 16X??"

Because $5/gallon gas prices will justify it.

swoope

iTrader: (5)

that is the issue. you want more power?

and really some turbo reny owners are doing better in mpg..

but really. you dont have enough money to buy a vowel.

but what do i know..

amf / adios my friend.

beers

TeamRX8

iTrader: (25)

ST_P_D F_CK_NG THR__D

Falken

The issue is I want more power with better efficiency. I'm not entirely sure people are understanding what I am saying:

The 16X engine is predicted to produce similar power figures to the 20B with better mileage. I have heard of people increasing their MPG with a turbocharger but the vast majority of people report painful movement in the other direction.

Besides, why have a turbocharger that only produces good power figures in the 4000+ RPM range, where I'm wasting extra gas anyways??

Falken

What's your problem?

Benjamz

just what he said, thats the problem... good one teamrx8

davefzr

I think the reason why he said that is because there are so many unknowns at this point that it's pretty rediculous to even ask the question.

We dont even know if it's going to be released yet. All of this is just speculation.

TeamRX8

iTrader: (25)

I think you got that backwards ...

link to problem

Falken

That's not what I asked.

What I asked was if anyone had EXPLICITLY STATED that the 16X WILL NOT be swappable into the RX-8. I am confident that if he read through the first three posts of this thread he would find no further questions concerning the 16X anywhere in it.

I am not going to get into a flame war with anyone either, if no one can answer my question than let the thread die, if someone can than they should post it.

sosonic

I think you might want to look into WHY some turbo people are able to get decent MPG. Remember that now you have more ECU reflashing and editing options. You may also look into type of oil being used 0W20 vs 0W30 vs 10W40 and into pre-mixing like 2 cycle oil vs Lubricous cleaners (Like Lucas UCL and Lube Control FP Plus). Also look into cooling like what type of anti-freeze to water to redline water wetter ratio. Type of radiator and intercooler... Larger oil pan...

You may find that you could go FI and still get nearly the same MPG for daily driving (exception being you going WOT or racing).

There is no telling when the 16X will arrive. It could be like 4 years from now. FI , 300HP+, and the other options are here TODAY.

mysql

What you don't seem to understand is that for every day driving, a turbocharged renesis will NOT be in boost most of the time. Thus the fuel economy will be similar to a stock RX-8.

If you romp on the throttle and go into boost, you will of course use up more fuel. But it's power on tap, not a constant drag on the vehicle.

I made 16-17 mpg when my RX was stock. I made over 17 mpg at the last fillup and I'm well north of 300 whp.


Two local FL guys picked up used greddy turbo kits for $350 each. Bolt it in and add a boost controller and you have 280 whp available when you push down with your right foot. Usually a used kit goes for 1800-2000 though.


Let me be the first to say this: HA HA HA HA

At this time you think the logical investment is in an engine you cannot buy?

HA HA HA HA

Ah, okay. Got that out of my system.


Logic, math, logic, are you trying to sound geeky, while putting up inane sounding arguments?


Now you're talking to yourself... ooookay. Have fun with that.

Falken

As I said, I'm not going to flame anyone.

1. The problem is that I kind of do have a lead foot. There is a problem with the statement that the turbo would no be supplying boost all the time - if it's not supplying boost, its not doing anything. It's like saying "mcdonalds food will quench your hunger but don't eat it, its bad for you". See what I'm saying? Why get a turbocharger over an engine that would produce higher power figures across the board than the current Renesis?? If I wanted power on tap, I would get a shot of nitrous (which I will actually probably be doing once I learn enough about it's interaction with the rotary engine) seeing as how it has the best power/price ratio and won't hurt my mileage.

2. Those prices are impressive and I would greatly appreciate a link to one of those turbo kits, because I have had no luck finding them for a reasonable price. I might justify 1500 on something like that right now but more than that is pushing it. Also I was under the impression that I would have to upgrade the fuel pump for forced induction??

3. Even thought he 16X is not currently available I suspect it likely will be, if Mazda is sticking with the rotary than they don't have anywhere else to go. Correct me if I'm wrong but I was under the impression that the 16X is the only rotary mazda currently has in public development?? The reason I see it as the most logical investment is because in the likely even that it is released, it would be better than any other option, and frankly I would rather wait a few years than spend extra money just to get the power sooner. Besides, if it isn't ever released, than I still have that money on tap to purchase a turbo or 20B, whereas if I bough a turbo or 20B now and the 16X WAS released, I would be strained to fund it. Why jump at the first power option that floats by? I don't NEED it NOW (although it would be nice )

4 years is worth the 2-5K in performance parts I would be spending today. And as I said, if I got that now I would not be able to fund the 16X if it comes out, while if it didn't come out I WOULD have the money to fund a turbocharger or 20B.