What Plugs And Gap For A D1 Car
What Plugs And Gap For A D1 Car Just looking to see what kind of plugs and gap all the Procharger guys are running here. I've been waiting to finish a motor build up to put the blower in but I can't wait any longer. I am just gonna toss in the headers, blower and misc bolt ons for now. Since the headers will be off I figured I toss on a set of new wires and plugs. What plug and what gap? This will be on a bolt on car with a low boost D1SC head unit.
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Joined: Sep 2005
Posts: 1,584
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From: NYC
NGK TR6 set at .035 may blow-out at high RPM. I gap mine at .025, this is also what Kenne Bell recommends. http://www.kennebell.net/techinfo/ge...C_KitParts.pdf
I am no expert on spark plugs, but I have always heard the wider the gap, the larger and higher voltage will be the arc. It takes higher voltage to jump a larger gap. I would always run as large of a gap as you can without having the spark blow out from the boost. Bob
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I am no expert on spark plugs, but I have always heard the wider the gap, the larger and higher voltage will be the arc. It takes higher voltage to jump a larger gap. I would always run as large of a gap as you can without having the spark blow out from the boost. Bob
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That all makes sense but what is the advantage of having a larger gap? I wonder if it just burns the fuel better? Does that mean more power though? Is a larger gap then creating more heat causing possible detonation?
Teching In
Joined: Jul 2005
Posts: 41
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From: CT
The cooler plug transfers more heat to the cooling system.
I spoke to NGK and based on my conversation with them , I went to a TR7 IX, iridium, #3690, which I gapped at .035.
I was running the TR6, but wanted to try a slightly cooler plug.
2002 C5 Z06
Stock engine
APS TT kit
9psi
572rwhp/606rwtq
pump gas, no meth
So far so good, but I've only got about 300 miles on them, and a few 4th gear pulls, but they run great so far.
I pulled one to take a peek, and it looked perfect, no indication that it may be prone to fouling.
