Which Spark Plugs??
 

I wanna hear what you guys have to say about spark plugs.....what do you recommend?....Leading and trailing.....brand and heat ranking. its for my FD with some mods...BNR turbos, PFC, full exhaust, upgraded SMIC, etc...

9s

leading and trailing?

B10EGV all the way around! their cheep and perform great. I would change them out with every oil change as they seem to foul up quick! I have had no problems with running these plugs. You will need to grind down a socket to install them.

+1 for NGK 9s leading and trailing. And IMO don't spend the extra for platinum, they won't last any longer.

I didn't realize you changed with every oil change, and they foul up quick. But your happy with them?

I change them every 2-3 oil change/sparks... But I change my oil on my FD every 1000-1500 miles.

I agree 9s all around, the standard ones. You can tell when they truely need changing by the way it starts and runs, but between 5-10k is a pretty good range.

I've heard the 10s that ZGN is talking about are good, but I've never run them because I've never had problems with the 9s.

ZGN, since you're the only one on this thread to use the BG10EVs can you tell me about your experiences, idling, cranking, etc.....are you more influenced by their price or their performance?

Price is good, about $4.5 a plug and you'll find them in stock at some Advance Autos. I don't have any problems cranking, idling (900rpm), I have revved up to 9K and without any breakup that I can tell. On the track I redline it all day with no problems; on the street i keep fairly high rpms, Cruise with no problems.

They only time my car is hard to start is when I shut it off and let it sit for a while with the hood closed and the IC gets heat soaked 75C+ but that’s not a plug issue. When they start to foul up your idle will be a little bumpy, and you'll notice a difference under load. Mine usually don't foul up by the 1st oil change but I figure since I am down there I'll swap them out. I change the oil every 1500 miles about every 3 months, or right before any track events.

I am running the HKS Twin power ignition amp and factory NGK plug wires with the stock coils.

I used to run a MSD6A with a second gen leading coil, the coil blew up and I went back to stock coils and a HKS-TP.

Price VS performance it seems like the best of both. If they did not perform well then they would be in the trash

Bryan @BNR recommended these plug to me and I'm happy with their performace.

I use Wall mart Super Tec oil and it's very cheap, 20/50 ever since the motor was built it has almost 20k miles in over 2 years. Knock on wood It will get me to Cali and back for SevenStock



NGK B10EGV Racing Spark Plug

http://ep.yimg.com/ca/I/yhst-2288521...6_2064_1518946
Product Description

For many years NGK Spark Plugs has been firing racing engines throughout the world. NGK Spark Plugs has become an icon in spark plug technology. To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials and configurations as follows: Electrode materials - Many use precious metals such as platinum or gold/palladium for greater durability and lower voltage requirements. Electrode configurations - Fine-wire center electrodes provide better sparking and enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. Insulator configurations - Special configurations are used for the insulator noses to improve throttle response.

If power is under 400 with no ignition amp I would run 9's all around. B9egvs all around.

If running an ignition amp I would run 10's all around regardless of power output. 9's are just too hot for amps. b10egvs (non resistor plug) and br10eix's(resistor plug) are both decent plugs at a low price. The HKS says not to run non resistor plugs with the twin power. Some people had trouble with breakup and others have had the TP boxes pop because of the non resistor plugs.

I personally run a TP with stock coils and used to run the b9egv's, they ran good and I had no issues with them except they burned up too quickly.

I have since switched to greddy race plugs which are rebadged NGK R7420's, at a lower price. The greddy plug part # is 13000150. They run between $29-$35 each ($116- $120 a set) These are Non resistor plugs, so safe to run with the TP.

These plugs made my car idle smoother, gave a more complete burn, and are supposed to last 20 times longer then the cheaper plugs. In the long run this is the plug to run and will actually cost less.

I'm running 23psi on a t70 and 575 cc of water preturbo, with these plugs, stock coils and a TP I have no breakup.

So, which one is it? :dunno:

Oops i meant to say they are resistor plugs.

To be clear the b#egv's are non resistor. The br#eix's and greddy race plugs(ngk r7420) are resistor plugs. Sorry about the typo