I gave it a google search, and there's a lot of debate between 1.1mm and 0.8mm for the electrode gap. I've been running a set of Bosch P8-4 spark plugs for about 6-8 months now thinking I bought the right set. People are claiming that 1.1mm is suitable for the N/A engines, with the turbos running 0.8mm, but it's been very debated (saying that later N/As run 0.8mm as well)

Should I swap them out for a higher gap plug or is 0.8mm fine? 

Haven't had any ignition issues as far as I'm aware, but surely the engine would run smoother if I put the right plugs in (assuming mine isn't correct)

Edit: Just realized the spark plugs I linked aren't identical - My current plugs are "Platinum+4", meaning it has 4 electrode tips per spark plug. Other than that, they're correct. I read on one forum that this actually reduces performance in the 3SGE engines.. hmm..

In the service specifications section of the owners manual for my 1997 Bathurst it lists Spark plug gap, mm (in.): 0.8 (0.031). That is what I have been running.

Lumix
In the service specifications section of the owners manual for my 1997 Bathurst it lists Spark plug gap, mm (in.): 0.8 (0.031). That is what I have been running.

Alright sweet. Mine is a 94 Bathy so I can only assume it's the same then. I guess that answers my original question - I wonder where people get the 1.1mm gap from then? Maybe that's only for the Gen1 and Gen2s?

Also can anyone confirm/deny that the Platinum+4s are any worse in engine performance?
Despite now knowing that I've used the correct gap, I want to be sure that they're the appropriate plug also

"Also can anyone confirm/deny that the Platinum+4s are any worse in engine performance?"
https://www.youtube.com/watch?v=GIc8k4Z_PcU
 
If you can afford them get NGK Platinum BKR6EP-8
The '8' on the end, is the gap they come with (0.8mm gap) - no need to adjust.
Recommended for stock 3sge motors - all gens.
I have used them for many years and they work great and last a long time - well worth the expense.
 
Also check out this great article from the forum archives:
http://www.mr2australia.com/mr2play/tm.aspx?m=85781&high=spark+plugs
 

Reddtarga
"Also can anyone confirm/deny that the Platinum+4s are any worse in engine performance?"
https://www.youtube.com/watch?v=GIc8k4Z_PcU
 
If you can afford them get NGK Platinum BKR6EP-8
The '8' on the end, is the gap they come with (0.8mm gap) - no need to adjust.
Recommended for stock 3sge motors - all gens.
I have used them for many years and they work great and last a long time - well worth the expense.
 
Also check out this great article from the forum archives:
http://www.mr2australia.com/mr2play/tm.aspx?m=85781&high=spark+plugs
 

Thanks Red, I checked online and they don't seem to stock them at SCA. May have to order from NGK directly.. or does anyone know if they have an Australian distributor?

If you look, there are heaps of  NGK Platinum BKR6EP-8 on ebay available locally.
 
For MR2's, SCA is good for stuff like car polish but not much else lol.
 
 

Reddtarga
If you look, there are heaps of  NGK Platinum BKR6EP-8 on ebay available locally.
 
For MR2's, SCA is good for stuff like car polish but not much else lol.

Fair enough. I've got this mindset that eBay is exclusively China-quality products. I've got to realize that reputable shops use it now also haha

I'll have a gander and see if I can find a good deal, thanks m7+1

Edit: Currently looking at this deal - http://www.ebay.com.au/itm/1-x-NGK-spark-plug-PART-NUMBER-BKR6EP-8-TOYOTA-CARINA-E-2-0-MR2-/360752254224?hash=item53fe828d10:g:CqsAAOSwBahVF1ci
 I'm not entirely sure how postage works, I'll ask if it's a one-fee of $5.xx then $16 per plug. If so, I'll probably go for this one

This is a great thread, while on the topic does anyone know what the best gap is for the 3SGTE? 

Also I'm unsure what I'm running as its a recent purchase but looking into changing the plugs. While platinum plugs are more accurate in their sparking I know that copper plugs will produce a much stronger spark which is better for these engines apparently. Can anyone give me an FYI on the best type of plug and the appropriate gap for my engine?

Matts_SW20
This is a great thread, while on the topic does anyone know what the best gap is for the 3SGTE? 

Also I'm unsure what I'm running as its a recent purchase but looking into changing the plugs. While platinum plugs are more accurate in their sparking I know that copper plugs will produce a much stronger spark which is better for these engines apparently. Can anyone give me an FYI on the best type of plug and the appropriate gap for my engine?

Ideal plug gap would be 0.8mm, same as the later gen 3S-GEs. As for the plug, the NGK Laser Platinums I linked seem to be of very good quality - I haven't ordered them yet, as I've putting my funds towards a new thermo/water temp sensor but I'll be picking some up in the near future I think

As for the strength of the spark, I never knew it mattered - if something combusts, it combusts. I didn't think it could "combust harder" due to a stronger spark. I'm interested to hear someone else's thoughts on that