Mechanical Changes On RX-8 Series I to II - Page 4 - RX8Club.com

Notices
Series II Technical and Trouble shooting Discuss technical details for the Series II RX-8 and any issues or problems you are facing

Mechanical Changes On RX-8 Series I to II

Old 01-04-2009, 01:24 AM
  #76  
Registered
 
robrecht's Avatar
 
Join Date: Dec 2003
Location: Hunterdon County
Posts: 1,932
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by ASH8 View Post
Yep, now we do have twin oil coolers like the US Models which should include the Auto's I am sure.
Check the upper right picture in your attachment in Post #82 above. Seems the Autos still only have one oil cooler.
robrecht is offline  
Old 01-04-2009, 03:34 AM
  #77  
Super Moderator
Thread Starter
 
ASH8's Avatar
 
Join Date: Apr 2005
Location: Australia
Posts: 10,612
Thanked 146 Times in 104 Posts
Originally Posted by robrecht View Post
Check the upper right picture in your attachment in Post #82 above. Seems the Autos still only have one oil cooler.
Interesting Rob,
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 03:36 AM.
ASH8 is offline  
Old 01-04-2009, 03:38 AM
  #78  
Registered
 
robrecht's Avatar
 
Join Date: Dec 2003
Location: Hunterdon County
Posts: 1,932
Thanks: 0
Thanked 0 Times in 0 Posts
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 ...
robrecht is offline  
Old 01-04-2009, 04:04 AM
  #79  
Hmmmmmm.........
 
auzoom's Avatar
 
Join Date: Mar 2005
Location: Melbourne, Australia
Posts: 3,549
Thanks: 0
Thanked 0 Times in 0 Posts
Ash,

Can I suggest summarising each finding in post #1.

Cheers

Andrew
auzoom is offline  
Old 01-04-2009, 04:59 AM
  #80  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Thanks: 0
Thanked 1 Time in 1 Post
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.
LionZoo is offline  
Old 01-04-2009, 06:17 AM
  #81  
幹他媽!
 
Detrich's Avatar
 
Join Date: Mar 2005
Location: San Gabriel Valley, CA
Posts: 2,073
Thanks: 0
Thanked 0 Times in 0 Posts
i love the wheels on the 09's
Detrich is offline  
Old 01-04-2009, 08:31 AM
  #82  
Registered
iTrader: (2)
 
Easy_E1's Avatar
 
Join Date: Sep 2005
Location: Bellevue WA
Posts: 7,675
Thanks: 0
Thanked 4 Times in 2 Posts
Here is the US AT and Manual oil cooler parts breakdowns for the 2009 models.
Attached Thumbnails Mechanical Changes On RX-8 Series I to II-062608oilcoolerat2009.jpg   Mechanical Changes On RX-8 Series I to II-062608oilcoolermt2009.jpg  
Easy_E1 is offline  
Old 01-04-2009, 09:55 AM
  #83  
Are we having fun yet?
 
Join Date: Feb 2003
Location: Conn., USA
Posts: 188
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by DMRH View Post
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
The 19's are lighter than the 18's? Interesting.
DAC17 is offline  
Old 01-04-2009, 11:10 AM
  #84  
Registered
iTrader: (3)
 
Join Date: Apr 2004
Location: macon, georgia
Posts: 10,766
Thanks: 0
Thanked 7 Times in 7 Posts
why did they change the baffling in the sump?
Was there some kind of problem identified?
OD
great thread by the way!
olddragger is offline  
Old 01-04-2009, 12:38 PM
  #85  
Administrator
 
zoom44's Avatar
 
Join Date: Jul 2002
Location: portland oregon
Posts: 21,892
Thanked 76 Times in 59 Posts
so they've decided that with the new oiling they dont need that cooler in the autos.

the whole sump changed
zoom44 is offline  
Old 01-04-2009, 01:08 PM
  #86  
Registered
 
robrecht's Avatar
 
Join Date: Dec 2003
Location: Hunterdon County
Posts: 1,932
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by zoom44 View Post
so they've decided that with the new oiling they dont need that cooler in the autos.

the whole sump changed
Did any autos ever have 2 coolers???
robrecht is offline  
Old 01-04-2009, 02:58 PM
  #87  
Registered
iTrader: (2)
 
Easy_E1's Avatar
 
Join Date: Sep 2005
Location: Bellevue WA
Posts: 7,675
Thanks: 0
Thanked 4 Times in 2 Posts
Originally Posted by robrecht View Post
Did any autos ever have 2 coolers???
Nope.
Easy_E1 is offline  
Old 01-04-2009, 06:06 PM
  #88  
Registered
iTrader: (3)
 
Join Date: Apr 2004
Location: macon, georgia
Posts: 10,766
Thanks: 0
Thanked 7 Times in 7 Posts
Ok--has anyone grafted a 2nd gen oil pan on to our car? Aviation guys have done this?
Sorry for the thread jack!

od
olddragger is offline  
Old 01-05-2009, 10:10 AM
  #89  
Ayrton Senna Forever
 
ayrton012's Avatar
 
Join Date: Sep 2005
Location: Europe
Posts: 406
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by ASH8 View Post
Yes Andrew,

Series II RX-8's have 6 (3 per Rotor Housing) oil injectors...

And 4 Fuel Injectors..

It may be possible that one EMOP does the existing two outer oil injectors and the other EMOP does the "Trailing" centre oil injector?
Yes. One of the EMOPs are for the two center oil nozzles (1/rotor), and the other for the 4 (2 per rotor) side nozzles.

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).
ayrton012 is offline  
Old 01-05-2009, 11:10 AM
  #90  
Registered
iTrader: (3)
 
Join Date: Apr 2004
Location: macon, georgia
Posts: 10,766
Thanks: 0
Thanked 7 Times in 7 Posts
increased oil pressure?
OD
olddragger is offline  
Old 01-05-2009, 11:45 AM
  #91  
Momentum Keeps Me Going
 
Spin9k's Avatar
 
Join Date: Sep 2002
Location: Colorado
Posts: 5,035
Thanks: 0
Thanked 0 Times in 0 Posts
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...
Spin9k is offline  
Old 01-05-2009, 01:33 PM
  #92  
Super Moderator
Thread Starter
 
ASH8's Avatar
 
Join Date: Apr 2005
Location: Australia
Posts: 10,612
Thanked 146 Times in 104 Posts
Originally Posted by Spin9k View Post
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...
A WS manual does not tell you what has changed.

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.
ASH8 is offline  
Old 01-05-2009, 07:16 PM
  #93  
Polish-American Hammarrrr
 
Join Date: Oct 2008
Location: South Carolina
Posts: 228
Thanks: 0
Thanked 0 Times in 0 Posts
Will there be any benefit to using premix on the '09+ now that there is an injector dedicated to the center of the apex seal?
PotatoSoup is offline  
Old 01-05-2009, 07:25 PM
  #94  
Banned
iTrader: (3)
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Thanks: 0
Thanked 2 Times in 2 Posts
Originally Posted by PotatoSoup View Post
Will there be any benefit to using premix on the '09+ now that there is an injector dedicated to the center of the apex seal?
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.
MazdaManiac is offline  
Old 01-05-2009, 07:58 PM
  #95  
Polish-American Hammarrrr
 
Join Date: Oct 2008
Location: South Carolina
Posts: 228
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by MazdaManiac View Post
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.
Anecdotal evidence from some owners (a guy on this forum from Omaha or Oklahoma, can't remember), who have owned both "versions", suggest that the '09+ is using more oil than their previous RX-8.
PotatoSoup is offline  
Old 01-05-2009, 07:59 PM
  #96  
Registered
 
Join Date: Nov 2005
Location: hot dusty oklahoma city
Posts: 157
Thanks: 0
Thanked 1 Time in 1 Post
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.
LPCOKIE is offline  
Old 01-05-2009, 08:00 PM
  #97  
Polish-American Hammarrrr
 
Join Date: Oct 2008
Location: South Carolina
Posts: 228
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by LPCOKIE View Post
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.
I think you're the guy I was referring to in my post above.

Can you comment on oil consumption in your '09 versus your previous 8?
PotatoSoup is offline  
Old 01-05-2009, 08:04 PM
  #98  
Rotary wanabee
iTrader: (1)
 
Join Date: Jul 2007
Location: Long Island, NY
Posts: 1,978
Thanks: 0
Thanked 0 Times in 0 Posts
use less premix perhaps?
heyarnold69 is offline  
Old 01-05-2009, 08:48 PM
  #99  
Registered
 
Join Date: Nov 2005
Location: hot dusty oklahoma city
Posts: 157
Thanks: 0
Thanked 1 Time in 1 Post
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.
LPCOKIE is offline  
Old 01-05-2009, 09:27 PM
  #100  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Thanks: 0
Thanked 1 Time in 1 Post
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.
LionZoo is offline  

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Mechanical Changes On RX-8 Series I to II


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.