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Installing a Series II (S2) Engine into a Series I (S1) can it be done?

Old 09-01-2011, 10:10 PM
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Installing a Series II (S2) Engine into a Series I (S1) can it be done?

I have had so many questions about swapping a Series II Renesis II Engine from the 2009-2011 RX-8’s into a Series I RX-8 (2004-2008 MY)...

The short answer is NO.....VERY costly and almost impossible...

The long answer is “possibly” provided all of your following Series I Parts are also replaced or renewed with these Series II Parts...

S2 Engine (complete with 2 EMOP’s and OCV)
PCM (ECU)
Power Steering ECU
All Engine and Interior Wiring Looms
All Immobilizer Control Modules (black boxes)
Dash Meter Cluster (Speedo)
Console LED Unit
Heater Control Unit. (the 3 *****).
4 ABS Sensors and Front Wheel Hubs.
Yaw Rate Sensor (or Combined Sensor, rear of Console)
EMOP Driver (next to Air Pump)
Cooling Fan Shroud and Motors (may be able to rewire existing S1 Fan Motors)
Main Fuse Box (under Hood)
Steering Lock Ignition Switch (Immobilizer Antenna change)
Air Conditioner Amplifier changed (wiring is different)
Oxygen Sensor changed.
Headlamp Auto Level Sensors changed and control unit.(wiring)
Air Bag Control control module changed.
Cruise Control (PCM) was also changed.
Steering Wheel and all Switches also changed (cruise control)
Alternator and Starter were changed (wiring may be able to be altered)

As I see it all of the above would need to be renewed as omitting “some”
would lead to CEL issues and communication issues with main S2 PCM (ECU).

Conclusion

You are far better off buying a complete Series II RX-8 and or swapping over the Front Bumper, Lights, Front Fenders if you wanted to retain your Series I look.

E & O E
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Old 09-01-2011, 10:12 PM
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I thought we had already determined this in my thread on the subject
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Old 09-01-2011, 10:14 PM
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Yes..I know mate, but I still get PM's asking, and 'if' there is a thread on the subject...so now there is one in the S2 Section...
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Old 09-01-2011, 10:34 PM
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TX

Originally Posted by ASH8 View Post
Yes..I know mate, but I still get PM's asking, and 'if' there is a thread on the subject...so now there is one in the S2 Section...
If only people would search. I get PM's asking me about spacers weekly.
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Old 09-02-2011, 01:16 AM
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i cant believe people sometimes
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Old 09-02-2011, 08:14 AM
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Searching? What is the confangled world do you live in Ash? Its easier to ask the same question that's been asked!
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Old 09-02-2011, 02:27 PM
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Originally Posted by RogueTadhg View Post
Searching? What is the confangled world do you live in Ash? Its easier to ask the same question that's been asked!
I think they should not allow new guys to post for at least a week.
only search and reply. I know some forums do that.
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Old 09-02-2011, 02:31 PM
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Originally Posted by RogueTadhg View Post
Searching? What is the confangled world do you live in Ash? Its easier to ask the same question that's been asked!
Perhaps I will just forward the PM's I get to you..?..if you are OK with that?
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Old 09-15-2011, 05:29 PM
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so i guess i cant put an FD RX7 engine on a SII??
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Old 09-15-2011, 09:25 PM
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Originally Posted by ErickDR View Post
so i guess i cant put an FD RX7 engine on a SII??
sure
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Old 09-15-2011, 09:37 PM
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Originally Posted by stewiefied View Post
sure
thats a yes or no :p? i just ask because i had water into my intake, engine, etc and it almost broke my engine. It happened in a rainy night but i HAD to get out off where i was (bad place, bad time). I learned to never drive my car under heavy rain at night again.
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Old 09-15-2011, 10:05 PM
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Old 09-15-2011, 10:11 PM
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Mate, I REALLY don't know WHY I am bothering to answer your question..

First did you READ my OP????

The Series II's are only 3 years old, so do you honestly think anyone has tried to put an FD 13B engine in???

Can it be done...WHO CARES...sorry...

Possibly, but what about all the control stuff, I am talking electronic to all the parts I listed above, do you REALLY want to make an abortion of a job on a car and then comeback to find that this or that won't work??

So, to REALLY answer your question I know No Series II owner who has done so..

I think there may be one or two Series 1's who have attempted to...I think...do a "search" and you might find out.

And Good Luck...
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Old 09-15-2011, 10:16 PM
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Is your engine gone?

Have you attempted to see if Mazda Warranty will apply, IF there is an issue..?

You are very light on detail, on what is actually wrong?
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Old 09-16-2011, 07:58 AM
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Ash its cool, my engine is fine, water didnt got that deep inside the engine, i ended up with my air filter soaked in water and needed to change my spark plugs. i just asked this question because i got a crazy idea of doing that if my engine died. Lucky me that i only had to change my spark plugs.
i had this idea because i think that if i had to change my engine, why go with the same and not with something more powerfull (FD rx7 or even maybe a 3rotor)?
thanks for asking my question, anyway i was pretty sure that it couldnt happen.
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Old 09-16-2011, 03:47 PM
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Please don't get me wrong...Anything IS possible...but just how money and time are you prepared to spend and risk and all the other BS that goes with modifying and changing over engines and parts.

I have seen that many nightmares when 'know alls' think they can do it and then after burning so much money, other issues and problems occur..

And then you get the ususal, Mazda is the biggest load of rubbish as a car ...yardy yar yar...etc, etc.
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Old 09-16-2011, 04:12 PM
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There goes Ash on his Old-man rant. Simmer down
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Old 09-20-2011, 04:34 PM
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At the risk of making myself look stupid but i am going to ask anyway, if you went after-market ECU could you not save on expense by not needing many of those hard to come by mazda parts?
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Old 09-20-2011, 07:05 PM
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Much would depend on "what" you want to work on your RX-8, considering virtually ALL electric/electronic components are controlled through the factory PCM (ECU) with connected specific Modules (Black Box).

Engine (a given)
Immobilizer
Speedo
HVAC
Air Bags
Stability Control......

Blah Blah...

REPEATING what I have already posted.
Frankly no one in their right mind would attempt it....but, someone will.
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Old 09-20-2011, 08:00 PM
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At the age of 17 I got an rx8 which turned out to be dead (bad dealer but another story) anyway knowing absolutely nothing about cars, engine or mechanics and never even checked the oil on a car, I decided to learn about the rotary using the internet and rebuild my engine, which I did successfully and am infact now doing 3 more, sound like someone in there right mind lol?
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Old 09-20-2011, 08:37 PM
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It is the compatibility of all the electronic parts/moules which is the issue, not a remove and rebuild or replace of existing parts (engine) with the same.
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Old 09-20-2011, 08:54 PM
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I see your point ok my sinario, I have a stripped out rx8 after breaking it for parts, I also have an r3 engine (I call it r3 as that's all that is avalable in the uk from the series 2 range) the plan put the r3 engine in the s1 chassis and use as a pure track car nothing serious just fun, therefore a lot of the electronics, cruise control, radio, airbags, most lights, air con etc, etc arnt even there let alone need to work, it is just an idea at the moment as the r3 engine is not much use ATM as all the r3's are under warranty still so no one needs a rebuild. What do you think?
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Old 09-20-2011, 09:15 PM
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The Series II Engine (R3) has a totally different MOP (Metering Oil Pump/Nozzle) set up (EMOP) and PCM....Front Timing Cover is different to S1 (as is Oil Pump under TC), there is an OCV (Oil Control Valve located on top of TC, again 'R3' PCM Controlled)...

Again...R3 (S2) Speedo Head is different and not compatible with S1 electrics.

I have no idea of the outcome if you deleted the other electronic parts you say you will not use...

Factory PCM will go into "limp mode" if too many "failures or issues" are detected...mostly engine / mechanical.

ALL you can do is try it...PM "PhillipM" a member here (from UK) who has a dirt buggy with an R3 (S2) engine, not quite the same setup though...I think he is using a Motec ECU.

Really I cant assist you any more as I know of no one who has attempted a S2 engine in a S1 Body.
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Old 09-22-2011, 01:18 PM
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jees, kids need to listen.
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Old 02-23-2012, 12:09 AM
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but are the front bumper and rear bumper mounting points the same for the s1 and s2 units??

only have tried that the hood points are the same...
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