rotarenvy

yeah cromax two less injectors but they are larger injectors.

old 6port 2 x 290cc 4x 380cc total 2100cc

new 2 x 400cc 2 x 525cc total 1850cc

less overall flow for those going FI

I'd say purely a cost cutting exercise less parts and complexity.

ASH8

Yes,

Minor improvements, matter of opinion.

If you call a better gearbox, better apex seal lubrication which may prevent a rebuild, improves rear suspension, better air flow to oil coolers, diff ratio, plus others already mentioned.

I guess beauty is in the eye of the beholder, personally I love the look of my car, has way more class than the previous model...which I think can look tired.

I really think it all depends on the colour.

The VR in series I looked great in series II it looks crap, because of the top grille.
In the white or black you don't notice the "mustache".

Every day I get lookers gawking at my car.

If I had the choice of the two, I would take series II because of the improvements, the car maybe 0.5 sec slower and use a little more gas, so they say, but for me the car is sorted, as I said before this 8 is a good as it gets.

And there have been many guys who have changed over..particularly to the GT/R3

ASH8

Not a rattle in mine yet, I will let you know when a lot more miles have been put on.

Mazda never publicly reports on fixing rattles (well it is never "big" news or in their press release)

rotarenvy

the new look is growing on me and while the little refinements they have made are a benefit, they haven't done enough to make me want a new one. the little improvements may make it onto my car in the future. like the bigger fuel injectors or diff ratio. these things are great news from my perspective

how did they make it slower? the diff and gearbox should give the series II an advantage. is it heavier or are they just being honest about the power and performance these days?

the 8 is great but the chassis is so much more than the NA can provide. if mazda would only force feed the 8 then I would buy a new one!

robrecht

It's only a tiny bit slower in the 0-100* time because of the need for an extra shift into 3rd gear. Lap times are actually better. Not sure if that's because of the suspension tweaks or maybe better tyres. Are there better tyres? See, I said tyres.

*That's 0-60 for us 'Yanks stuck in a 19th century measurement system', but you penal colony in-mates are still measuring time in hours so I don't know what the big deal is!

ASH8

Rob, mine has RE050A's, from RE040's.

robrecht

Thanks, I thought I'd heard somewhere that the tires were upgraded a bit. Where do you feel the handling differences? Would you notice something like better track times?

robrecht

Thanks! If no one else knows, I'll go measure my Series I coolers when it gets warmer. BTW, it's cold up here in New Jersey now, not warm and sunny like in the penal colony. You'd think one of you in-mates might go out and measure your Series I coolers, but no, sit around drinking Fosters and wait for me to do it in April maybe.

ASH8

I have not got a series I handy with RE40's to do an A and B comparison

I really don't think you would see much difference at all, perhaps Bridgestone have addressed the "noise", I think these Tyres are 'rated' to go a little faster than the 40's, plus BS don't make the 40's anymore which are a Jap import here.

robrecht

Probably still hung over from all the Fosters. Thanks!

robrecht

Thanks. I know Australians think Fosters is crap, but its a lot better than most American beer, haven't tried Coopers yet. I lived in Belgium and Germany for many years so I have developed a taste for something better than American swill.

rotarenvy

the belgium's know how to make a beer! leffe is one of my favorites.

auzoom

Here is some discussion on the injectors change.

As for tyres the change to RE050 is all that is being talked about. Its a newer tread pattern, newer materials, etc. They are still 225/45/18 (Or 225/40/19).

Cheers

Andrew

ASH8

Back on thread topic..

In the Series II RX-8, there are the all new Electric Metering Oil Pumps, yes Pumps. They replace the single mechanical MOP Mazda has used for the past 40 years.

There are two electric metering pumps that sit on top of engine almost dead centre, both are joined together via an oil supply hose.

It appears these pumps are not serviceable, although as yet I can't confirm this.

There is also a Metering Oil Pump Driver located next to/on the electric air pump.

Note: I am not sure why you would have to drain engine coolant to service the MOP?.

ASH8

225/45R18 (91W) on my car , I guess 225/45R19 for the R3/our GT.

They are RE050A's (not RE050) which are the Asymmetric tread pattern.

Ash

auzoom

Yep that would be right about the 19's. And yeah I was being lazy leaving off the "A". But as I was getting at, the model of tyre is the only difference unless you count 19's on the GT.

As for the new OMP, looks like it would be a WHOLE lot easier now to run a line from the pump to a seperate canister so you can run 2 stroke for the pump and synthetic in the crank.

Cheers

Andrew

zoom44

we need this thread out in the bigger forum. no reason to duplicate the work. Ill move this one to the tech section and STICKY it

swoope

iTrader: (5)

and to all,
the difference in the oil cooler intake opening is substantial. that is the first thing i noticed when i saw the car in person..

beers

auzoom

The opening in the front bumper but not the cooler itself? What about the airflow behind, etc.

Cheers

Andrew

auzoom

Pretty sure its a calculated value in a table.

Cheers

Andrew

ASH8

Not sure there, I don't think there would be much difference, i.e,, if there was a larger gap behind the oil coolers then that would change the overall length of the car, and I don't think there is much difference there, only a few millimetres if any.

ASH8

I also wonder why Mazda opted for two EOM pumps? and not one?

rotarygod

The center of the apex seals require more oil then the outer edges. However the amount the center requires may not always be proportional to the amount required at the outer edges depending on rpm or load. As these increase, the center of the apex seals get hotter at a faster rate than the outside edges due to intertial forces acting on the seals. This was actually shown in a Mazda SAE paper from long ago which was pretty interesting.

MazdaManiac

iTrader: (3)

Preliminary exploration into the subject has so far revealed that the metering oil is still controlled by only one load-based and one throttle-based table.
So, any difference between the two pumps will be accomplished by the pumps themselves.

auzoom

Not if they moved the oil cooler forward.

I will do some digging but any handy links would be great.

Cheers

Andrew