I am about to place an order for some spark plugs...R5672A-8. I am boosting 10psi on a built LS block with a GSR ported hear. The turbo is a 60-1. I am running BKR7E-11 right now. Also, what gap should I use for the BKR7's and the R567a-8's? I read that the correct gap is .35, for both. Thanks for any advice.

 

I have mine gapped at .28 (this is what AEM recommends for up to 20 psi of boost). I'm sure you will get answers that vary slightly. GL.

 

I don't have an answer for you, but then again, I didn't know what kind of thread I'd be reading becuase you picked such a stupid title.

 

28 - 30

 

NGK says for every 50whp gain, should lower gap by .004 from stock gap.
And, for every 75-100whp gain, should go one step colder from stock level.

For example, my car is as follows:

Stock: 105whp
Now: 180 whp

Gap(stock): 0.044
Gap(now): 0.036

Level (stock): 5
Level (now): 6 (NGK BKR6E)

Car runs perfect.

DAN

 

^^That's good info. And your avatar is... confusing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EnzoSpeed &raquo;</TD></TR><TR><TD CLASS="quote">^^That's good info. And your avatar is... confusing </TD></TR></TABLE>

Thanks man.

Regarding the avatar......its a woman's hand on a computer mouse.

DAN

 

just to let you know, you don't need that last number. on the bkr7e-11, the -11 is the size the plug comes pre-gapped

 

i run the 9's for 600whp
they are gapped at .014

for street driving on pump gas
I run bkr7e's at .020 on the street