Brettus

iTrader: (2)

That tuner was mistaken . Opening them any earlier than 6000 will yeild a loss in whp .
It's all about the velocity of the rotor past the port .

Rote8

I need to fine tune on a dyno...

JMKuco

Who did try this things ?
I do not know how it fits ?!
I need a gaude pod for my AFR and boost gauge.
I was hesitating to get one like those.
this one is evo-R brand...

see it on ebay

olddragger

iTrader: (3)

I know that the old days we used the int X and Scott reportively opened the apvs a little earier. I must admit the midrange kick was stronger then. I have no idea on the tune other than it was rich!
I have stopped thinking in terms of #psi boost, etc and I try to think now of the airs temp/viscosity. Helps me visualize it better.
Since the sc can get the air to max viscosity at around 3K that is unwavering to my redline, opening the apv earier should not show a drop in power?
How would the tune have to be changed? The red injectors are not that big and the p2's are oversized? As long as the a/f's remain good --there should be no change to the tune?
OD

Kane

iTrader: (1)

Do you mean velocity?

My recommendation is to log g/sec curves with the same tune with the APVs open at stock, and backing it off by 1000 rpm at a time then overlay them.... the sweet spot should be pretty evident.

This assumes your MAF scale is spot on - helps avoid nasty lean spikes.

Rotr8

iTrader: (2)

you can get it if you want but the first few and only since that bought it werent happy with it, you can see in the pics that due to the geometry of the clameshelled gauge cluster the gauges actually face away from the driver. Not much but enough to be annoying to dislike it,,,

you may want to pester James to put in production his gauge pod that hes prototyped, https://www.rx8club.com/rx-8-multimedia-photo-gallery-6/spoolinmazda-rx8-gauge-pod-189766/

Brettus

iTrader: (2)

been there done that . Don't see why a SC should be any different than a turbo in this regard .

olddragger

iTrader: (3)

nope meant "viscosity". Helps me to understand "boost" better.
10psi "boost" means the air is compressed to a different viscosity than a 5lbpsi boost. Right?
Velocity is still important, as is flow. Makes me think of my large intestine
Just helps me to think that moving a higher viscosity air to a greater velocity is different than moving a lower vis to a greater velocity. Viscosity to me means = boost+ volumne. Otherword how much air do we have Jethro.

I really need the flow map for my unit--i guess?
OD

Kane

iTrader: (1)

You do - or you can look at MAF, IAT and Pressure to help you visualize it.

olddragger

iTrader: (3)

looks like i have a job to do.
That new jack is sweet
https://www.rx8club.com/attachment.p...1&d=1265339997

Oh,,,,,,,,.... hit 326/g/sec at 7.5K today--just another day on the way to work!
OD

jskup1

iTrader: (7)

What kind of jack is that? I need to get a new one. My craftsman one is all lopsided.

olddragger

iTrader: (3)

best deal i have found on a jack. Its a 2 ton jack with double pumps and almost 19" lift. Low profile to 3 inches i think.
Its from Harbor Freight.
It is aluminum and wgt is about 35lbs
Got it for $159.oo +tax

olddragger

iTrader: (3)

ok --getting my kw's on and its my 1st experience with adjustable coilovers on my own car.
?
in adjusting ride height--tires always has to come off and car has to be jacked up---right?
do you measure from fender lip to the center of the wheel?
thanks
OD

Kane

iTrader: (1)

Yep - I count threads on the Coilover, then remount the tire and drop it back down to get the height you want.

So once you get one wheel height right, set the other three to the same thread number and remeasure all of them on the ground.

It's kinda a pain but it works and it only normally takes me 20-30 minutes.

olddragger

iTrader: (3)

Thanks Kane.
Glad I have the new jack. Now if I only had a lortab or 2 for the old bones.

with the heavier springs (i had the TEIN H's) i can already tell traction is going to be more on an issue. Trade offs I guess.
OD

Kane

iTrader: (1)

Traction bars.... lol oh wait wrong generation.

olddragger

iTrader: (3)

now there you go --bringing back memories of bent leaf springs and broken u joints and Roadrunners fading behind me!
OD

Kane

iTrader: (1)

And a 13 second street car was hella fast!!!!

olddragger

iTrader: (3)

Lol--cept i was in the 11's with stock drum brakes! Couldnt stop the dang thing.

Charles R. Hill

iTrader: (7)

Replace "viscosity" with "density" regarding air masses and you are on the right path.
Velocity isn't nearly the issue with F/I engines as much as density is. Velocity is a concept more applied to N/A engines in an effort to develop inertia in the air-mass. This is what Mazda calls their "Supercharger Effect" and it has been utilized with piston engines for the same purpose.
The idea is that with an N/A engine we are limited to the air-density that Mother Nature gives us. F/I engines can get around this a bit and I don't feel like arguing wastegates versus belt-drives, thank you.

olddragger

iTrader: (3)

Lol --i am with you Ray. Its just a personal word that helps my particular gray matter visualized a density that is flowing. When I think of density, for some reason I think of something just sitting there.
With my brain now a days I have to use whatever works to help what does not..
OD

Charles R. Hill

iTrader: (7)

I am hip, Denny, but we gotta get you into the current nomenclature/vocabulary or the yungins/noobs who look up to you will become confused.

BTW, intake air velocity and density comprise the elements of harmonic resonance that engine designers use to achieve given torque curves in the engines they design. What Mazda did with the Renesis is pretty damned impressive.

With F/I engines we are somewhat replacing the concern for velocity with the element of density. Brute force to stuff air in the engine, so to speak.

Kane

iTrader: (1)

Yeah...... finesse is for pussies!


Oooorah!

Rote8

I once had a girlfriend who would argue that one...
She enjoyed the brute force method...

olddragger

iTrader: (3)

lol
oooorah indeed:0.
For the sake of all those young impressionable minds i concur.
OD