|Posted on Monday, August 10, 2015 - 10:57 am: ||
So I was reading through my 06 R1 service manual, Im getting ready to change the plugs and wanted to see which plugs to order. The service manual call for NGK CR9EK.... Well MY RX uses CR9EKB which got me thinking, So I looked up the specs for both plugs and the CR9EK plug for the R1 has the exact same specs as the plug for the RX same reach,thread size,thread pitch same heat range the only difference is the gap, .028 for the R1 as apposed to the RXs .032
So I then looked at the R1s race manual and it calls for NGK R0045Q-10 race plug, again same specs except for gap and heat range. .044 gap and heat range 10 as apposed to 9. Oh its also not a mulit-ground plug like the other 2. Could this plug be used on the RX? Im curious since they are so close to each other.
|Posted on Monday, August 10, 2015 - 10:54 pm: ||
Do you really want to spend $140 for a pair of spark plugs?
As was said on AF1's forum, maybe the high end if you're running very high compression.
Otherwise, spend the extra $128 on a bottle of single-malt Scotch.
|Posted on Tuesday, August 11, 2015 - 12:59 pm: ||
Agree with Zac.
That ring style grounded spark plug also takes more amps to jump the larger (non-adjustable) gap.
The stock (OEM) plug is just fine.
If you have an adjustable ECM, and have increased the ignition timing, a "one step" (or two) colder plug might be of help, but even that is of marginal concern if you haven't raised the timing.
On a gas engine, that has the stock or near stock compression ratio and stock or near stock ignition timing...there's nothing special that the various spark plugs will provide.
They just provide a place for a "spark" to happen..! Nothing else...
Now if you have very high timing and or compression ratios, run alcohol or nitromethane for fuel...that's a different story.