What do you guys gap your plugs to on your turbo apps. B18c1 for instance. Also do any of you guys use the octane booster they sell at the local auto parts store? I heard that **** is bunk.


[Modified by dragonsmp, 1:02 PM 10/5/2001]

 

I'm using HKS Iridium sparkplugs (no 9) and they've been gapped to .38 if i remember correctly (i'm not the one gapping, its my mechanics that do it). I don't need octane booster, because pump gas in Thailand is all 91, 95, or 97 octane - take your pic really we also have 110 octane gas.. but its a lil' bit expensive per litre (like 3 times the price of 97 octane gas)

 

What's the benefit of gapping them lower, like .32?

I currently have them gapped .38, will the MSD compensate for it being gapped higher?

 

I need this info by tonight... I am running in like 3 hours

 

Nobody wants to help me out!

 

I use NOS race formula with no detonation. It is good stuff. I mix it with 91.
I gap to .035

 

Thanks, my friend. Still looking for an answer on why to gap lower? What is the benefit.

 

I believe one reason may be that with boost, the spark may not be able to make it across the stock plug gap. So the gap must be reduced to ensure the spark makes it across the gap. An aftermarket ignition should help with this problem though.

Does anyone know what gap can be run with an aftermarket ignition?

 

That's what I was thinking. I think I'll be fine with the aftermarket ignition too. Thanks dude

 

If you're using an aftermarket ignition and coil, you'll be fine at .38.

 

I know Nology wires are widely thought to be overated, especially because of the price, HOWEVER, I have had nothing but good results with them. Each time I replace my plugs, they always have worn perfectly. If you have the energy to send the spark over a wider gap, you have a larger spark area, better combustion, and more power. There is a point of diminshing return though and you have to find the right gap to get the best combustion.
As far as octane boost, I use Outlaw octane booster, the box of 4 silver cartridges and it works fine, but I am only boosting 8 psi.

 

when u get the aftermarket ignition they tell u how much to gap with what application