Picked up new spark plugs

[spudtatoe]

Yooo,

So I took apart my car to get to the spark plugs and coils to see if they were bad etc,

I had Bosch FR7KPP33U+ and they were well used.

So I went and bought 6x NGK BCPR5E-11 for the car

I couldn't find much info for spark plugs for the RB25DE NEO, only DET. And even with that they were all expensive ones that were $30 NZD each, when these were only $8 NZD

Haven't had a chance to put them in yet and even when I do the car won't be moving till I get coil packs, PCV grommet that goes into the cam cover and a few hoses that were split.

I hope I got the right ones lol, has anyone used these in their engines?

[KiwiRS4T]

They should be fine. The 11 on the end means they are pregapped to 1.1mm so gap them down to 0.8mm. While you have the coils out give them a good clean and if you have some insulating tape or spray give them a coat.

[spudtatoe]

They should be fine. The 11 on the end means they are pregapped to 1.1mm so gap them down to 0.8mm. While you have the coils out give them a good clean and if you have some insulating tape or spray give them a coat.

Is it worth gapping them to 0.8 on a non turbo? Read that it wasn't really worth it.

I'll try give the coils a clean, I'm more worrying about how to get ahold of some new hoses

[Trex]

Lol what. No it's not worth gapping the plugs down on them. Most of the time it's not needed on turbocharged cars, it's mainly used when the coil packs are failing and the spark is blowing out. The bigger the gap the more spark the better.

[spudtatoe]

Lol what. No it's not worth gapping the plugs down on them. Most of the time it's not needed on turbocharged cars, it's mainly used when the coil packs are failing and the spark is blowing out. The bigger the gap the more spark the better.

Thought it's not worth gapping then down, but I'm going to buy some Splitfires in the upcoming weeks

[KiwiRS4T]

4 hours ago, Trex said:

Lol what. No it's not worth gapping the plugs down on them. Most of the time it's not needed on turbocharged cars, it's mainly used when the coil packs are failing and the spark is blowing out. The bigger the gap the more spark the better.

OP has 20 year old coil packs. The reason for gapping them down is to discourage the spark from taking a short cut to the head instead of through the plug.

[spudtatoe]

OP has 20 year old coil packs. The reason for gapping them down is to discourage the spark from taking a short cut to the head instead of through the plug.

According to my uncle who is a mechanic, the coil packs look fine and my misfire was caused from split hoses and my pcv valve grommet being split and half fallen out.

But is it worth getting new coils regardless?

I'm gonna go grab some anti seize/nickel seize grease stuff because the spark plugs I removed were on incredibly tight to the point where I needed the breaker bar.

[admS15]

If the misfire goes away then buying new coils would be a waste of $600. My 2c.

[spudtatoe]

If the misfire goes away then buying new coils would be a waste of $600. My 2c.

Exactly what I was thinking, I'm gonna buy these hoses and PCV parts then if I still have that rough idle misfire I'll get the coils.

[admS15]

If it still misses, b4 u buy coils, gap plugs down to .8. Will make bugger all difference to max power but could save you $600. It's not like your trying to make 500hp. Don't spend the $ unless you absolutely have to. FYI, I have 20yr old factory coils running 20 psi and +300 rwkw at .8mm gap without misfire.