NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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- 2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)

- - Spark Plugs (https://www.nopistons.com/2nd-generation-specific-17/spark-plugs-2884/)

dac	06-07-2002 09:19 AM

Anyone know the various NGK Plug numbers that fit a Rotary?

I read an article on the NET of a guy that gained 18 HP with a N/A (Yes on a Dyno) by switching to hotter 11.5 plugs.

He is running a Haltech also.

It's a PP motor but he started with just 150 HP and Haltech Tunning got it up to 270 HP.

13BAce

06-07-2002 10:42 AM

11.5 plugs are colder than stock. If your car is mostly for the street then running BUR9EQ's should be good enough. That's what I run. What are you using now?http://www.motodepot.com/street/engine/ngk...gk_special.html seems to have the best prices on the cold plugs.

dac	06-07-2002 11:21 AM

I'm running the stock plugs.

I tried 2 sets of Leading plugs in it also. I didn't really notice any change, But that was just on startup. I didn't really do any runs with them.

THANKS for the link.

13BAce

06-07-2002 11:28 AM

Quote:

Originally Posted by dac' date='Jun 7 2002, 01:21 PM

I'm running the stock plugs.

I tried 2 sets of Leading plugs in it also. I didn't really notice any change, But that was just on startup. I didn't really do any runs with them.

THANKS for the link.

The leading plugs are hotter than the trailing plugs.

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