anyone how much to gap ngk cold plugs in a ls vtec turbo pushing 9lbs dailing and 15lbs for runs?
also has msd blaster 2 coil and low comp pistons at 9.4

 

bump

 

Use the standard gap as advertised by Honda in the owners manual?

 

you think?even with that much boost?
the car was braught to jeff evans to be tuned and i believe when he tuned it he closed the plugs to close to .015 which is a lot more shut than the stock .040 or osmething like that
but the problem was teh car would not start back up after shutting it off when it was hot i would have to wait 15-20 minutes for the oplugs to cool down

 

I dont see why you would play with the gap at all. The plug is going to spark correctly only at that gap regardless of mods.

 

well im not that sure either i just know that after the car was braught to evans it came back like that, so either way he closed them up like that and thats how he tuned it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CompanyFlow &raquo;</TD></TR><TR><TD CLASS="quote">I dont see why you would play with the gap at all. The plug is going to spark correctly only at that gap regardless of mods.</TD></TR></TABLE>

I'm not sure what you are getting at here...

When you used forced induction, it is quite common to use a colder range spark plug. And, in higher HP applications, it is often necessary to make the gap smaller. If you tried to run the stock gap on a turbo'd Integra pushing 20psi and making 300whp, they would probably laugh at you and not run well at all.

Because you are forcing so much air into the cylinders, you can actually create enough air that would cause the plug not to spark.

There is no real standard to go by on this, you have to test on your own application. I went down as far a .029mm gap on my turbo teg.

 

I would use 100% stock ignition there is no need for an external coil, as for plugs i would use #7 plug possible #8 depending on what the tuner thinks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CompanyFlow &raquo;</TD></TR><TR><TD CLASS="quote">I dont see why you would play with the gap at all. The plug is going to spark correctly only at that gap regardless of mods.</TD></TR></TABLE>

Because the added cylinder pressure will blow the spark out. It happened to me with stock plug gap causing horrible misfire and bogging in the higher rpms.

I recommend a #7 plug gapped to .030". If you are still misfiring, close the gap down a little more.

 

thank you guys thats exactly what i was looking for
the plugs are cold #7s ngk
and im pushing 15psi and making 372whp
i set them back down to about .020 today and it seams to be running fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rdssk8rcs1 &raquo;</TD></TR><TR><TD CLASS="quote">thank you guys thats exactly what i was looking for
the plugs are cold #7s ngk
and im pushing 15psi and making 372whp
i set them back down to about .020 today and it seams to be running fine</TD></TR></TABLE>

I had no idea that you were making that much power.

If you have problems with the #7's getting too hot, you will need to get a set of #8's.

 

Jesus christ what kind of turbo unit are you running?

 

t3
also running a gsr ported and polished head 550 injectors hondata s200

i just baught the car it was up for sale on here.....