ASH8

OK,
I now have a Mazda EPC (Parts Catalog) for the latest RX-8 (Series II).

So I can confirm exactly what has changed between the two models.

What I am comparing is the Final Series I (08) RX-8 manufactured against the latest (09) Series II.

--------------------------------------------------------------------------------------------------------

There is NO Change in the Tail Shafts between manuals, there is a change for the Auto's though.

The Spark Plug Leads have changed, BUT, the COILS have Not....
Part Numbers have gone from an N3H1-18-100A to a B, the B was also used in 08 RX-8's.

Both Series have two Cooling Fan Motors, they have changed on 09's though the fan blades are the same, I am thinking that the motors RPM's have Changed.
Other essential parts in the cooling system, hoses and thermostat remain the same.
Can not confirm ON/OFF Temperature settings for Cooling Fans..yet.

Oil Coolers have changed (confirmed), however the Auto still only has one.
Two for the Manual.

Clutch and Pressure Plates are the same, but the Throw Out/ Fork Bearing has changed.

Both Alternator and Compressor drive belts have changed.

New Oil Pressure Sensor mounted on EMOP #1.

Throttle Body and Electric Air Pump remain the same.

The Oil Pump assembly, is totally all new and is sold ONLY as a complete assembly, NO OP internal parts sold separately.

Alternator, Starter, Fuel Pump assemblies have all changed.

There are NO changes to the Brake Pads or Brake Rotors, front or rear.

More to come..

ASH8

BTW,

I will take requests for Part Number comparisons between the Series I and II RX-8's

robrecht

Thanks, I always trusted zoom44 on this despite the naysayers here. But it's still too cold here for me to go out and measure to confirm the change in size.

zoom44

Anyone plugged in a OBDii/CAN scanner into a series 2 to confirm whether or not the new Oil Pressure Sensor info (.55- 1.03 v /50-150kPa/.51-1.52 kgf/cm2 / 7.3-21.7 psi) is available to on the bus?

ASH8

OK, Now I have the Mazda EPC, I can tell you a little more about the Oil Metering Pumps and Supply to the nozzles.

The two Tubes you see on each of the Oil Metering Pumps are a Supply Line/Circuits (in) Only for the two pumps.

The Supply lines to the nozzles are done by banjo connectors (both ends) on the Oil Metering Pumps and the Nozzles.

The Oil pressure sensor is attached to oil metering pump #1.
Obviously it monitors oil pressure to the EMOP's.

The Oil metering Pump #1 (with OP Sensor) supplies only Two Nozzles, (possibly the new trailing centre nozzle injectors)

The Oil Metering Pump #2 supplies the remaining 4 Nozzles.

Each nozzle has it's own independent supply line from the two EMOP's.

olddragger

iTrader: (3)

wow! Thinking what I am thinking?
How did the fuel pump change?
olddragger

heyarnold69

iTrader: (1)

will this part replace the old part for series 1 models?

Sleepy-z

Well if it makes anyone feel better Mazda is currently and has photographed every single engine we disassembled for research and I mailed out some used apex/side that they wanted for research in Japan last week. We have to photograph the housing/rotors/eccentric shafts for every single engine. They also then measure the side/apex seals for all of them for more research reasons.

I havent had the pleasure of tearing apart a 09 yet, we have 16 brand new 09's to ship out before we send out rebuilds for owners. So far we shipped one out, it went to SF, CA the owner hit a rock and lost all the oil and it ran dry. Sad to see it but you figure that would happen to someone.

LPCOKIE

that is why i put back the pan when i changed the oil
just in case
i have hit two "things" since then
no way i could avoid them

ASH8

N3H1-13-35ZF Is the Series I fuel pump assembly with No serviceable or replacement parts...according to my EPC.

The Series II is a N3R1-13-35Z the Assembly, however, there are now 2 serviceable parts available/listed...

LFB6-13-ZE1 Fuel Filter (Inside pump body)
LFB6-13-280 Pressure Regulator, Valve (Inside Pump Body).

Whether there is a changed in Pump Pressure I can not confirm at this stage.

Both LFB6 Parts are listed available from US Dealers, I can't confirm if they fit Series I Fuel pumps.
Fuel Filter retails $20.93 and Regulator $35.47 USD

ASH8

Wow, must of been some rock they hit, the new Sump Guards on the 09 are reasonably thick plate then you have to tear into the sump itself!

ASH8

No, the new Oil Pressure Sensor is Series II Specific and is mounted on #1 EMOP (Electric metering oil pump)..



Another (one) Oil Tube Goes Here.............................................. ..*

ASH8

Newly added is a "Magnet" located in the engines sump. (Part # F401-17-121).

Last used in the 1989 FC RX-7, But in the Auto's Transmission Case NOT in the Engines SUMP PAN, this Sump Magnet is a first for any Rotary.

ASH8

Again Something New...

There is a new 'End Plate" which goes between the End Housing and Transmission's bell housing.
One for Manual and one for Auto Transmissions.
This spacer is 3 mm thick.

olddragger

iTrader: (3)

Sum Bitch---its REALLY interesting that they changed the fuel pump assembly this way.
Venturi is different, fpr different location--looks like the sock is different--AND NOW THE FILTER IS REPLACEABLE. I have thought there was a problem with this assembly for a long time---this confirms it for me,
The new arrangement looks like it makes for more room inside the can also----good changes and I hope to hell it will fit the series one---if the venturi line will be able to attach.
DUDE--- BIG THANKS for this info!
olddragger

olddragger

iTrader: (3)

by the way that is one hell on a mop set up isnt it---daymnnnn.
OD

nycgps

iTrader: (1)

I want to switch to series II. they have pretty good deals right now.

but if I do ... my gf and parents going to nuke me ... ...

zoom44

deleted off topic banter

LPCOKIE

ASH8

thank you for the effort in this thread. My knowledge of my car has been greatly increased.

have you looked at the clutch pedal bracket to see if it has changed.

ASH8

Thanks,
Pedals, Basically no...
They have done a change about November 08 production (mine is August 08),
from a B to a C part number, can't confirm if it is a complete change (I say No in my experience on this one) very minor if anything.

erx8s

Ash8

Great info as usual , i dont know if u are aware the Hymster has Finally completed The Twin Screw Supercharger project , heres a thread on it .

https://www.rx8club.com/showthread.php?t=164657

Maybe getting a series II RX8 with a Hymster Supercharger if it can be adapted to the series II could be the answer i have been looking for .?

Cheers
Michael

TeamRX8

iTrader: (25)

you missed about 50 others, fail ...

heyarnold69

iTrader: (1)

this thread made me cry. I now know that I Know less and less with every post. sadness. I think I'm gunna go pay a visit to a nearby junk yard and find me a renny motor and rebuild it.

olddragger

iTrader: (3)

the 09 fuel pump is $400---damn--i was hoping to swap out.
OD

ASH8

Highlighted (in Red) is the OIL CONTROL VALVE (OCV) used for the first time in any rotary.

It is located on the Top (left Hand Side) Front Timing Cover Housing and Supplies the engine oil only to the two new EMOP's (Electric Metering Oil Pumps).

Interestingly it is the same OCV Valve used in the 03-06 Mazda 3 and 02-05 Mazda 2.