ASH8

EMart11b

iTrader: (5)

I don't know if it's been mentioned already but I was just poking around getting ready for a CAI install tomorrow and noticed there's no VFAD, has this been done away with on the s2s or am I just blind

LionZoo

Well the art and science of plastic production has advanced greatly since the days of the FC. If engineered correctly, I'd feel pretty comfortable with the lifespan of some of the available plastic options out there. An interesting comparison would be to see how similar the new impeller design is compared to the RE-medy impeller.

LPCOKIE

i got rear ended talil light is $700 US i was blown away but they dont leak

LPCOKIE

i will endeavor to use spell check and some periods

ASH8

Sorry about the late reply,

Yes you need new specs, there is still the same VFAD on Series II RX-8's, it is tucked behind the Bumper.

Ash

EMart11b

iTrader: (5)

AT never had it I was pretty noob when I posted that

ASH8

OH, yours is an AT?

Yep, they don't have a VFAD

michaelsk8er

iTrader: (1)

I just installed Unorthodox pulleys and the alternator and Crank pulleys seem to work. My car runs, and no CELs at least. Not sure if there will be a problem running hte pulleys since I only replaced the two pieces on the out. Couldn't install the water pump one unfortunately.

PENTECH

Hi everyone... i have this 2004 MAZDA RX8 it's japan version and non turbo matic transmission

I hope some can help me / answer my question if i can used other brand of spark plugs instead using the NGK OEM plugs? Can anyone suggest and tried using different brand?

ASH8

Wrong thread to ask these questions mate, do a search on Spark Plugs you will find the places to buy OEM.
But, NO there are No "Cheap Design" alternatives.

NGK OEM are the best and really only plugs to use.

michaelsk8er

iTrader: (1)

Totally random and wrong. This thread is about the changes on the 2009.

secret8gent

To get the thread back on track I'll ask a question that's been in the back of my mind that I don't think has been fully explained...

How are the series II spark plug leads different? (different length? the coils are still in the same spot, right?)

I was holding out on asking 'till I got to take a look at an 09 for myself; but I've been busy. (Maybe someone knows...)

Thanks.

ASH8

Wish I had a set to compare them for you, I am thinking maybe "quality" as the location of coils are the same, the N3R1-18-140A (09s) are about $10 bucks more???

secret8gent

So if the coils are in the same spot, the length should be virtually the same. (clip is probably the same too...)

Anything in the series II shop manual about normal specified resistance?

series I
Resistance
1.0-4.0 kilohms [20 °C {68 °F}]


Regards.

michaelsk8er

iTrader: (1)

The transmission changes include a new shifter. Anyone wanting to get an AFE short shifter, don't bother yet as it will not for several reasons.

ASH8

Have you tried the MX-5 Forums, and or the UK one it is basically the same as the NC MX-5 gearbox...or Mark 3 as the English call them.

I think I recall them talking about a SS for the MX-5...could be wrong?

michaelsk8er

iTrader: (1)

I just looked briefly. It looks like it could work and I hear they basically took the MX5 transmission for the new model. Both the shifters have two grooves in the ball part, which looks like it would work. I would try to find a friend with a MX5 to test it before I actually purchase one.

ASH8

Yes, as said before the 09 or Series II RX-8's have the exact same design Gearbox as the NC Miata/MX-5, they even share the exact same (by Mazda Part Number) main shaft, However, there are some (many) differences, that being a stronger (thicker) trans casings, revised gear ratio's with beefed up gears and syhchros...

seanp

Awesome thread ASH. This and the Technical document posted elsewhere is really enlightening me to the real changes between my old S1 (sadly written off on a track-day incident), and my newly acquired R3

TooManyIDs

Great post, thanks.

ASH8

You can see from these two Part's Diagrams of the Ignition Coil Mounting Bracket's, that Mazda appear to have made a long elongated Hole at the base plate to allow for better heat dissipation and cooling of the 4 coils...(S2 PIC)

Many Series 1 RX-8 owners are Modifying/Cutting their Coil Bracket Base Plate with Holes under each of the 4 Coil Packs to assist in venting and cooling of the Coils.

Heat and or Arcing is a major issue in Coil failures seen in Series 1 RX-8's, also the Coils were updated by Mazda on the 1st March 2006 and then again to the latest on the 1st December 2007 PRODUCTION DATE.


Here is a "Modified" Series 1 Base Plate with the 4 holes cut out..

Spin9k

That doesn't make much sense really, I'm surprised they decided (or determined) that would help the situation. In the electronics business intimate contact with metal and aided by heat conductive compound is a far more effective cooling mechanism.

The direct air transfer path from the coils is far far less effective. In the case of these coils they are in close proximity to a high heat radiating source (the engine) and any airflow is dependent on motion, and again the abysmal plastic coil material to air interface.

Take CPU cooling, another high heat in a small area producer, similar to our coils. Metal heatsinks are the norm. If ambient air only is used to cool the heatsink, you have one mother of a metal sink because, again, the air to metal heat transfer is not very good. If fan forced air is used, somewhat less heatsink is required, and if water is used to remove the heat, there is virtually no heatsink.

olddragger

iTrader: (3)

i think it is not the high heat that kills the coils--rather its the fluctuation of the temps---hot/cold/warm/hot that does it.
Glad i moved mine off the engine
OD

ASH8

The Yellow Coil Bracket pic is from the Pettit Installation Guide, they are the ones that recommend the 4 Holes..

As for the factory Series 2 Coil Bracket, it looks like it is a long hole in the middle but could be a "tunnel groove"??

Denny, sent you an email mate..