Mechanical Changes On RX-8 Series I to II
01-04-2009, 12:24 AM
#76
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01-04-2009, 02:34 AM
#77
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First, this manual I have shown here is the LHD US/Canadian Version.
SO Just to confirm this..
Series I in the US 6SP Manual Had 2 oil coolers, your Auto's only had one as did the Australian Manual and Auto versions only having the one.
Series II, The Australian Manual (mine) and US have 2 oil coolers, and it appears the Auto's still have only one? in both countries?..
WHY?, Why would Mazda penny pinch on such a critical Item when the largest percentage of US engine failures were the Auto's AFAIK.
Have I got that correct Rob?, Great find mate.
I really thought both Auto and Manual (Series II) would of had 2 oil coolers, I must check out an Auto when at the dealer this coming week.
Having said that we know the Auto does not Rev as high, but it is still a 6 port motor?
Thanks
Ash
Last edited by ASH8; 01-04-2009 at 02:36 AM.
01-04-2009, 02:38 AM
#78
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The sales literature actually has said that the autos have dual oil coolers for some time but they don't, at least not in the US. I haven't personally looked at a 2009. I agree it's pretty stupid of Mazda not to use two coolers on the autos in the warmer climates anyway. I suspect they think it's not necessary with the lower rpms on the auto, but ...
01-04-2009, 03:59 AM
#80
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The opening for the oil coolers on the front is larger, but is the opening on the back the same? This is critical as I always thought the front opening was large enough, but the small slits in the back were probably choking the flow a bit. As it is, even the Series 1 oil cooler intakes had plenty more open area than either than cooler itself or the exhaust.
01-04-2009, 08:55 AM
#83
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Series-II Engine...
MOP changes - located on top of centre plate to suit additional (3rd) oil metering injector
Injectors - Pri2=400cc Sec=525cc
Sump - new baffling
Knock sensors - 1-per rotor
front timing cover - revised design
water pump - revised design
Oil pump - revised design
oil filter - relocated to front lower left corner
IGN coils - cant read the Kanji properly
Oil filler - Spout & dipstick revised design
Series-II chassis drivetrain
Front cross member - foam filled as per 07 run out models (40th Ann version)
LSD - Revised design
Gearbox - Revised design (aka NC MX-5)
Gear level - shorter throw
Wheel/tyre combo - 18" = 22.7kg - 19" = 21.4kg
Steering control arm - link assy raised 7.5mm
Underbody - additional paneling - CD reduction to "0.30"
Shocks - Type-RS/GT Bilsteins, revised mounting points
Visual changes are well known now & easily spotted.
REgards
MOP changes - located on top of centre plate to suit additional (3rd) oil metering injector
Injectors - Pri2=400cc Sec=525cc
Sump - new baffling
Knock sensors - 1-per rotor
front timing cover - revised design
water pump - revised design
Oil pump - revised design
oil filter - relocated to front lower left corner
IGN coils - cant read the Kanji properly
Oil filler - Spout & dipstick revised design
Series-II chassis drivetrain
Front cross member - foam filled as per 07 run out models (40th Ann version)
LSD - Revised design
Gearbox - Revised design (aka NC MX-5)
Gear level - shorter throw
Wheel/tyre combo - 18" = 22.7kg - 19" = 21.4kg
Steering control arm - link assy raised 7.5mm
Underbody - additional paneling - CD reduction to "0.30"
Shocks - Type-RS/GT Bilsteins, revised mounting points
Visual changes are well known now & easily spotted.
REgards
01-04-2009, 12:08 PM
#86
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01-05-2009, 09:10 AM
#89
Ayrton Senna Forever
Question:
Why Mazda increase the oil pressure so much? Because of the better cooling (higher oil flow), or to avoid the part's surface contact?
As I remember ( now I don't have time to check the correct data) the pessure is almost 2 Bar higher in the series II. ( xxw-30, 100C, 3000 rpm).
01-05-2009, 10:45 AM
#91
Momentum Keeps Me Going
Can someone w/access to the WS manual check if any fuel system changes have been implemented? Pump, tank design/shape, filter, plumbing, things like that...
01-05-2009, 12:33 PM
#92
Super Moderator
Thread Starter
Mazda Parts will tell you if the number has changed, which it has.
I can confirm the Fuel tank is 5 litres (about a gallon) larger.
From the WS manual all other parts and locations appears the same.
The tanks is located in the same position.
01-05-2009, 06:25 PM
#94
Its very likely that the new scheme actually injects even less oil than the previous version. The thinking being that since the "coverage" is better, the volume need not be as high. (Speculation - I don't have flow rates for the new pumps.)
More importantly, the oil distribution is going to be more uniform coming from the fuel source rather than the MOP nozzles.
I'd still mix 400:1 or so in the tank and turn up the MOP 5% or so with a reflash.
01-05-2009, 06:58 PM
#95
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I would still use pre-mix no matter what combination of oil nozzles they put in there.
Its very likely that the new scheme actually injects even less oil than the previous version. The thinking being that since the "coverage" is better, the volume need not be as high. (Speculation - I don't have flow rates for the new pumps.)
More importantly, the oil distribution is going to be more uniform coming from the fuel source rather than the MOP nozzles.
I'd still mix 400:1 or so in the tank and turn up the MOP 5% or so with a reflash.
Its very likely that the new scheme actually injects even less oil than the previous version. The thinking being that since the "coverage" is better, the volume need not be as high. (Speculation - I don't have flow rates for the new pumps.)
More importantly, the oil distribution is going to be more uniform coming from the fuel source rather than the MOP nozzles.
I'd still mix 400:1 or so in the tank and turn up the MOP 5% or so with a reflash.
01-05-2009, 06:59 PM
#96
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i would like to see more comments about this. i asked that question and got a no in another threat. i have a lot of respect for MazdaManiac but would still like a little bit more response. I got my 09 so i wouldnt have to pre mix but will if it needs it.
01-05-2009, 07:00 PM
#97
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Can you comment on oil consumption in your '09 versus your previous 8?
01-05-2009, 07:48 PM
#99
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i was using 5oz per tank in my 05 with no oil use between changes, every 3000miles. my 09 uses about half a quart every week. i average 450 to 500 miles a week, which is about 75% interstate.
01-05-2009, 08:27 PM
#100
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That is quite a lot of oil. Maybe the centers are injecting quite a bit more than we suspect since there's no center port and so the center injected oil is less likely to escape and damage the cat and this also means it's less of an emissions concern? Either way, unless evidence proves otherwise, I'd still probably assume that Mazda is injecting less oil than optimal for emissions reasons. It's better to be on the safe side; a cat costs a lot less than a new engine.