Hello everyone. it's been awhile since I've posted. Blew up my engine back during Covid, and then had a daughter which put off fixing it for years. Finally almost ready to start it up, after getting a new block machined with CSS closed deck system, oversized K-series pistons, turbo set up, blah blah blah. Wondering the best spark plug to run? I know I need a colder plug and believe I had NGK's in it before, just unsure on the model number, but it's been over 5 years since I driven this thing, and wondering what everyone's running. Running about 300HP TIA!

 

Best for what engine? what engine are you running and what is your compression ratio with the K series pistons etc?

That'll determine how cold a spark plug you go.

That said any NGK or Denso is fine, once its the right spec

 

BKR7E is all you need.