Well I have my motor finally built and got the tranny in a few weeks back, and now I am trying to get the little parts for the motor, check the sig for specs . My question today is which spark plug to run??

Now before anyone says please SEARCH, just want to let everyone know that I did. People list the NGK BKR7E-11 and the Autolite plugs, because of the higher compression. Also, read a post back about Rocket's Plugs that made a little bit more power. This car will be driven daily about 4 times a week, so with some good tuning and cold plugs, hopefully dont have to worry about detonation.

I really want to know what other people are running with there high compression motors.. Pls respond with recommendations and comments, no flaming though.

 

no one wants to reply??

 

People have vouched for the NGK R5671A and the come in heat ranges 7-9, I have tried all 3 on mine, it really depends on your set up, injector size and fuel pressure and compression and timing, I personally use the #8s, the 9s were too rich and the 7s were OK but the 8s have worked out the best so far, I have s2s3 with 13:1 cr, hope this helps.

 

NGK BKR7E-N-11
Pregapped & all :-)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreStaged12s &raquo;</TD></TR><TR><TD CLASS="quote">People have vouched for the NGK R5671A and the come in heat ranges 7-9, I have tried all 3 on mine, it really depends on your set up, injector size and fuel pressure and compression and timing, I personally use the #8s, the 9s were too rich and the 7s were OK but the 8s have worked out the best so far, I have s2s3 with 13:1 cr, hope this helps.</TD></TR></TABLE>

Since when are spark plugs too rich ?
lol

Just run BKR7E-N-11 & call it a day on all motor applications.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">

Since when are spark plugs too rich ?
lol

Just run BKR7E-N-11 & call it a day on all motor applications.</TD></TR></TABLE>

By running rich I meant the plugs were to cold which resulted in the fuel not being burned efficiently, when I tried the 7s they plugs ended up being a little bit on the white side and the 9s were too black so the 8s for me have been working out the best.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">NGK BKR7E-N-11
Pregapped & all :-)</TD></TR></TABLE>
ordered these about 3 weeks ago.

 

i have the ngk spark plugs inlinefour.com sells for high compression/turbo motors. they are ngk4554's i believe. il4 sells them for $20 but you can goto napa and get them for $8 or less.

 

NGK BKR7E-N-11 end of thread