CR10EK Plugs in an ATTAK

[**sj**]

Nice idea...
see....another country heard from...next time I'll try his idea!

 

[Bob Miller]

You can also use the NGK CR10EK equivalant:

Nippon Denso Multi-ground plug
Stock Number: 4135
Part Number: U31ETR

 

[**sj**]

You can also use the NGK CR10EK equivalant:

Nippon Denso Multi-ground plug
Stock Number: 4135
Part Number: U31ETR

actually...that's what i just installed

 

[87gtNOS]

Look in the nitrous forum....Apex dyno'd at DYNOTECH this week made LESS hp with the CR10EK plugs...Put the stock plugs back in and HP went UP! He did lots of runs, stock was best.

 

[Srxspec]

P.S. I HAVE THREE DYNO RUNS ON STOCK PLUGS AND FOUR RUNS ON THE CR10EK PLUGS. IT LOOKS LIKE I AM GETTING FROM 1 - 3 HP IMPROVEMENT THROUGHOUT MOST OF THE RPM RANGE. TOP END RPM ABOVE 10,500 RPM WAS NO DIFFERENT. THE RUNS WERE ALL DONE ON THE SAME DAY.

Actually, read what he posted a few pages back. The CR10EK plugs made 1-3 more hp up to 10,500 rpm.

 

[87gtNOS]

Guess that might make if feel a little more 'peppy'!

I then put the stock plugs back in and ran 3 stock dyno's. Got same exact horsepowers. In fact, my peak stock horsepower was at 152 or 153 and that was with the stock plugs back in.

 

[RTX DUDE]

plugs

I beleive another issue was the 92 octane/race fuel mix? wouldn't the plugs make more horsepower with 87 octane? slower burn verses, much slower burn? just an idea.
also, 37 bucks with shipping is still cheap hp even at 1 or 2 hp!!!

 

[Srxspec]

You'll notice it in the acceleration, been measured on timers numerous times.

 

[87gtNOS]

Re: plugs

I beleive another issue was the 92 octane/race fuel mix? wouldn't the plugs make more horsepower with 87 octane? slower burn verses, slower yet burn? Just an idea

I thought he ran 93 octane? If you are talking about the boondocker nitrous guy....

 

[Srxspec]

RTX DUDE, very excellent point, I missed that he was running 93. Running 93 octane on a stock motor (I realize he was running it for the NOS) will burn colder to begin with and a colder plug will not show the same gain.

 

[SUPERTUNER]

I just called NGK and asked about the difference in heat ranges. They actally recommended a CR9EIX. It's the same heat range as stock (CR9EB). However, the electrode ground is made from Iridium and is also thinner. This allows for a much more complete burn in the combustion chamber. If anyone has done any testing with these plugs, I would be very interested to see the results.

The CR10EK with the dual grounding straps are the way to go. End of story, next topic. The Iridium sparkplugs just cost more and make less power than the CR10EK's.

Freddie

 

[stoutner]

O.K. I need to get a life

I input all of the data from 3 stock plug runs and 3 CR10EK plug runs into a spread sheet. Here are the results.

P.S. 87GTNOS that posting is a little deceiving because it is only one run. I posted my worst CR10EK run and my best stock plug run on that posting.

P.P.S. ....and yes I need to get a life....bored without snow.

 

[87gtNOS]

Stoutner, it will be interesting to see what RPM gains you are getting on YOUR kit. Some testing of the Holtzman kit on Sunday I was seeing 800rpms with a real rich fuel setting....

 

[stoutner]

Still bored.

I'm Still bored so I averaged all the Hp results and threw the numbers into a graph. Here is a graph of the results.

 

[vice108]

Re: Still bored.

Thanks man - thats great. Thats why I love this site! Lots of helpful people, and great info without all the BS you see on other sites.

TY rocks

I'm Still bored so I averaged all the Hp results and threw the numbers into a graph. Here is a graph of the results.