192 to 231 ?

Any form of normally aspirated power mods.
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Nogginthenog
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192 to 231 ?

Post by Nogginthenog » Thu Feb 02, 2017 6:38 am

Ok guys, I've read posts until I'm half blind, and that has helped me in my quest to solve the issues that my second RX8 has....however, on the good one, where I have no issues, I'm wondering what a 192 needs to be uprated to 231......is it just a remap, or is the engine physically different ? If it's a remap, is the engine capable of handling the extra power ? The LAST thing I want is issues with this one......

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Ryan Rotary Performance
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Re: 192 to 231 ?

Post by Ryan Rotary Performance » Thu Feb 02, 2017 7:14 am

It needs the following:

A 231 six port engine with wiring looms
A 231 ECU
Clocks and probably some wiring adjustment.

You will also need the keyless key module or you'll have to change the locks I believe.

This is just from the top of my head there are probably loads of other bits needed to change over

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acegeezer
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Re: 192 to 231 ?

Post by acegeezer » Thu Feb 02, 2017 8:56 am

This is not an easy job at all and as Ryan states the items above are required, afaik there are numerous other components required too, like you will probably want a 6 speed gearbox etc., :( .. not worth it in my book m8
John
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Re: 192 to 231 ?

Post by Rotary Potato » Thu Feb 02, 2017 9:19 am

When looking to buy, i viewed a 192 that had been converted to a 231. The conversion had been done well ... 6 speed box, 10k dials, etc. However the engine was reluctant to start hot, and the body was a bit scruffy ... so i passed.

No idea why someone would go to all the expense & effort of doing the conversion with a nearly knackered engine & a scruffy body! :)
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PeteH
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Re: 192 to 231 ?

Post by PeteH » Thu Feb 02, 2017 11:12 am

Rotary Potato wrote:When looking to buy, i viewed a 192 that had been converted to a 231. The conversion had been done well ... 6 speed box, 10k dials, etc. However the engine was reluctant to start hot, and the body was a bit scruffy ... so i passed.

No idea why someone would go to all the expense & effort of doing the conversion with a nearly knackered engine & a scruffy body! :)
Maybe around the back they had a great 231 body with a great 192 engine in it..... :?: :-k

Nogginthenog
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Re: 192 to 231 ?

Post by Nogginthenog » Thu Feb 02, 2017 10:02 pm

Thanks guys, I wondered if it were just an ecu reprogramme or something, but it obviously isnt..........so we'll consign that idea to the big round tin thing in the corner......

NOSfan
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Re: 192 to 231 ?

Post by NOSfan » Thu Feb 23, 2017 3:58 pm

I only just saw your post so maybe I'm too late to the party! I have a 192 and I noticed that the 231 is not the answer to all my prayers. If anything, the torque of the 192 will be as good or better than the 231. Also, for power mods, the 192 is ideal for a N20 (AKA NOS or Nitrous or Nitrogen Oxide) kit as the fuel injectors are less complicated than with high power 231. So with all the options of decat (which is awfully smelly) and expensive this that and the other, you can simply stick with stock and blast some NOS into it, and BANG off you go. That's the upside- you don't need a dyno to feel the extra urgency. I had to do it though! So the dyno reported an extra 30lbft at 4600- which is MUCH more than a ported 231. The downside is of course, that the bottle runs out lamentably! My next project is buy direct a larger bottle and decant myself.

I've a track day booked at Snetterton for next Tuesday 28th. If your around- I'll give you a ride!

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Re: 192 to 231 ?

Post by Sonic KaBoomii » Thu Feb 23, 2017 6:14 pm

Did you stick with the same 5spd box ?
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NOSfan
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Re: 192 to 231 ?

Post by NOSfan » Fri Feb 24, 2017 8:37 am

I haven't changed the box, although I understand it's limitations. Gear 1, 2, and 3 are fine, but the gap between 3 and 4 is where the 6 speed box is better. LC Rotary will swap you a box out if interested?

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warpc0il
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Re: 192 to 231 ?

Post by warpc0il » Fri Feb 24, 2017 11:02 am

The differences between the 192 and 231 engines are all focused on natural aspiration, getting more air to flow into the engine, with sufficient fuel, to achieve higher revs.

As soon as you move away from NA and increase the air with a compressor, or increase the oxygen with NOS, then the 6-port advantages start to become irrelevant.

This make a 192 engine a simpler and (probably) more effective base for FI/NOS. However, when you're rebuilding your 192 engine really to take the extra power, don't forget to fit the rear stationary bearing from the 231, otherwise I'd predict an early failure.
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NOSfan
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Re: 192 to 231 ?

Post by NOSfan » Fri Feb 24, 2017 4:16 pm

Yes, that's a good idea. I'm hoping the reason my bearing is fine is because the power I'm putting through is within spec most of the time. The great advantage of NOS (over porting) is the torque. My 192 with NOS was 30lbft more torque than a full port 231. And when buzzing around Brands, torque is probably as important as power. I put the NOS on fully understanding it may end in tears cos I didn't really know what I was doing. So far only smiles!

NOSfan
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Re: 192 to 231 ?

Post by NOSfan » Sun Feb 26, 2017 10:37 pm

Rather relieved to hear from LC Rotary, that the engine they rebuilt in 192 has the 231 rear stationary bearing fitted as a standard part of their rebuild. Can look forward to Snetterton this Tuesday safe in the knowledge at least this element is as good as can be.

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