Jedi's RX-8 Stereo Upgrade (click)

jdm clear corners

Yes but the flywheel will still have a bigger effect - especially in the lower gears .

You just need to compare the acceleration of the flywheel when going from 6000 to 9000 rpm vs that of the wheels to see what I mean . If anyone can be bothered to do the maths - good luck to them :)

Side bar:
Rotational energy is proportional to the square of angular velocity. Without looking up the moment of enertia of the stock flywheel, light weight flywheel, stock wheels, and some light weight wheels, you can run some basic numbers. If the tranny gear ratios are 3.538, 2.060, 1.404, 1, and 0.713 for fifth, you get some normalized rotational energies as follows: Set 9k rpms at end of first as 100% or 1.0. 9k in second is 295% of that or 2.95 factor higher. 3rd is 635% or 6.35 factor. Fourth 1252%, fifth 2462%. The rotational energy stored in the wheels increased exponentially at speed. The flywheel increases exponentially with RPM regardless of gear/car speed. Between 6k rpm and 9k rpm, the flywheel goes from 1.0/100% to 2.25/225% of the 6k reference rotational energy. Depending on the masses involved, it's easy to imagine the flywheel being awesome in first and second why the lighter wheels would be much favored in higher gears.

My favorite mod is almost always new tires, especially going from stock to decent tires.

My favorite mod by far is the Tokico adjustable shocks. :icon_tup:

I can't agree more maxx, the 040 must be the worse tire in the world... but then, changing tires is not a mod, for me...

two best things I did:
1) single outlet exhaust in the middle (forget the rear foglight) helped the low-end torque a lot. made my rx8 look different too...
2) final gear ratio along with some gear and differential modding. made my rx8 hit 9200rpm in 6th gear (!) on a flat road at a speed of 162mph (258kph)...

and I have, and used to have, flywheel, titanium exhaust, various catalysts, short shifter, various intakes, ce28 rims, brake and suspension upgrades...

Getting my Mazdaspeed flywheel installed by dealer for $380! Can't wait :)

$380 of labor?

its been done.. i should know... search

Yup! The part, I bought from Tom @Rosenthal Mazda for $460! So..altogether, $840. Best mod for the price, yes? :)

I guess the rationale behind my choice is that my car is more appearence focused (20 inch wheels, tein s-tech, rb exhaust purely for sound) .. as apposed to straight line speed and cornering.

Being that this thread was raised in the Performance thread, I can see why flywheel is so popular. I actually don't have a flywheel.

The general claim in Australia is that the RX8 has a 0-100km/h time of 6.4 seconds.
Do we have estimated on the reduction a lightweight flywheel would make to this time?

I have done 5.85 :) 0-60mph which would be approx 6.0 o-100km/hr

but what else do you have done to the car? stock everything else?

having a hard time driving your car then? :cwm27: :cwm27: :cwm27:

Exhaust.

:rollingla

see my sig . However I would put practically all of the improvement to the flywheel ...

Good runs I did previous to FW were up around 6.4 & I did several runs after just doing the FW & before any of the other mods so I'm pretty sure about the above statement.

I like this. :eek:

I want this....badly. :wiggle:

-Cody

After dumping a buch of money into my old (now wife's) 8 and then having to strip most of the parts of and sell--I'd say either the AFE/SS or Goodridge SS brake & clutch lines. Both are under $300 and you notice right away. For a few extra birds, the Tokico D-Spec Kits are sweet.

what the heck do Stainless Steel brake and clutch lines do?

As for me I did the AFE shortShifter and the flywheel and both are great instant notice / improvement mods.

what kind of flywheels is everyone installing?

light ones .....

and round.


beers :beer:

damn - I forgot about that ....

mine makes my car fly...awesome mod...the landings are still a bit rough though...

Stainless Steel lines give brakes a firmer feel, less "spongy".

My dealer did the MS flywheel, MS exhaust, and MS CAI for $510. I remember them saying the flywheel was a 4 hr. job.

I'd have to say by far the best mod you can have done is the suspension. I got the MS springs/shocks/sways/tower bars and it makes a world of difference.

The lighweight flywheel is a decent mod but considering the cost of labor to install and the minimum gains from it your money would be best spent elsewhere.

Are you serious?

So, to be more exact, the single best mod I've done to my car, is that, with the help of this dude, I've met Rotary Xpert... He helped me and he is still helping me a lot and always delivers.

i want the final gear!!! anyone wanna give me some input on it?!?!

yeah I have no idea what stainless steel lines do....

why change them? and whats the benefit? I see above about firmer braking, but what about clutch?

RP Supercat, but thats all i have done right now. I just order RB intake and AP pulleys tho

My ss clutch line arrives shortly & i'll be putting it straight in .I'm hoping it will give me more travel of the release brg . At the moment with a HD clutch I'm finding that when engine is cold I'm not getting full clutch disengage .
I'll post here if there is any change with the ss line.

Thought about this some more: I'm going to also go with the ONE mod that I sometimes forget is even on my car: RP Short Shifter! It's the mod that just keeps on giving.

rims.

wat do the ctluch lines do? i might go ahead and get these.

put in my ss clutch line last week . I have a HD clucth & have been having trouble getting full clutch disenguagement . It could have been air in the line but I used the same proceedure to bleed it as I did after putting the line on and the problem has gone away now . So - yes it is worth it if you have a HD clutch .

all my mods are the best.

but in terms of gains vs cost, I would say a boost controller outweighs the rest :)

Hot Chicks are the best addition to any car.

I know I keep a couple in my trunk at all times.

I kid, I kid. I don't ever put anything in my trunk.

Drove a stock RX-8 last weekend and it definitely reaffirmed my love of the Axial Flow Short Shifter. :rock:

Have any pics? Must look hot.

60lbs seems tough to believe, the BBK will give you what, 24lbs off the front? that leaves the rims saving 30lbs or over. thats close to 7 pounds a wheel. Well now that a think of it you could do it, 17-18 pound wheels though.

well, he said unsprung weight. 1 kg reduction in unsprung weight is about 6kg reduction in sprung weight. so im guessing that's where he's getting it from.

squash air freshner for me!

my pettit s/c
http://i7.photobucket.com/albums/y27...percharged.jpg

midpipe

i think i want one of those

i wanted to get this, but the cost is wayyyy too much.

Tein flex