I am going to be switching out sparkplugs this weekend with another set of Denso IKH24s. I am also going to be installing a Spoolinup COP, so I wanted to get some feedback on what I should gap the plugs at? Car is running on 91 octane (TBE, IC/IC piping, 272 M2s, CAI)

 

0.024 - 0.020

 

well ur running a ix, me on my 8 im runnin the denso iw24 which is one step colder iridium, my gap is at .024 im runnin a sparktech non cdi, no misfire issues here pulls good and hard. so start with about .024, so that way the gap isnt super close.

 

I gap my plugs at .024 making 600+whp.

I'm also running IKH24's BTW.

-Josh

 

Interested in other people's responses to this, I've got my IKH24's gapped at .028 w/spoolin up and all is well so far.

 

im at .025 with bpr8es spoolinup cop 26psi fp black 91oct

 

thanks for the responses guys, raasfaas, do your sparkplug tips erode relatively fast from running a wider gap?

 

honestly I've only been on the spoolin up and this gap for about a week now so I really couldn't say...but I'll pull the plugs and give some feedback

 

Hi,
I am trying to start my car with sparktech cop non-CDI but it is not starting up i have tried 0.030 to 0.060 gap on NGK Iridium BR8EIX new plugs ..Previously i was using same setup with stock coils and HKS twin power DLI same plugs with 0.045 gap .. i am running evo VIII MR JDM, stock block, HKS272 cams, BC valve spring retainers, hks 3037 turbo, Perrin Fuel rail, 1000cc precession injectors, AMS F-1 intake manifold and S90racing throttle body 70mm... Guys please help me on this issue.

 

That is a crazy big gap. Stock is .028 or something I believe, and most people seem to do between .024-.020. Just to make sure, we're measuring inches here, right?

 

.024 for me aswell

 

im at 0.24 my self.

 

lets bring this back because it's always good info. I will probably run .024 BRP8EIX on E85 with AEM EMS. Anyone suggest anything different?

 

I've never gapped my plugs. I'm going to do it this weekend. See mods in my signature, running 27psi tapering to 22. 0.024 seems to be what everyone is going with?

 

AJ don't use the quarter size spark plug gapper tool

I have some feeler gauges you can borrow.

I think you will be fine with 0.024.