quote:

Originally posted by 358T:
62galaxie, If I didn't know what plug you ran before I would suggest a NGK -7 heat range plug for your lower compression milder combo.

Anyone who asks me I tell them to run the same plug as they did on gasoline (assuming it was close to the correct heat range plug) just make sure the gap is around 030 (assuming a CD ignition).

Going from a perfect tune up with the perfect plug heat range to a colder plug and then increasing the timing or taking away fuel just to get the plug to "look" the same or "right" does not mean it will make more power. In my opinion it will probably make less and be hard on parts.

Let's say you have the perfect amount of fuel and the perfect timing and the plug looks perfect. Now you change to a hotter plug or a colder plug. The different heat exhange rate means the plug will read differently and may make a person change the fuel or timing to get the plug to look right. But all that does is take the engine out of it's optimum operating parameters. Timing and fuel requirements are determined by the engines design parameters not the plugs heat range.

Scott

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by 358T:
62galaxie, If I didn't know what plug you ran before I would suggest a NGK -7 heat range plug for your lower compression milder combo.

Anyone who asks me I tell them to run the same plug as they did on gasoline (assuming it was close to the correct heat range plug) just make sure the gap is around 030 (assuming a CD ignition).

Going from a perfect tune up with the perfect plug heat range to a colder plug and then increasing the timing or taking away fuel just to get the plug to "look" the same or "right" does not mean it will make more power. In my opinion it will probably make less and be hard on parts.

Let's say you have the perfect amount of fuel and the perfect timing and the plug looks perfect. Now you change to a hotter plug or a colder plug. The different heat exhange rate means the plug will read differently and may make a person change the fuel or timing to get the plug to look right. But all that does is take the engine out of it's optimum operating parameters. Timing and fuel requirements are determined by the engines design parameters not the plugs heat range.

Scott

What if you do all that and go quicker, does that mean you made more cylinder pressure at the right degree after top? In that case did the parameter of the engine change or the parameter of your understanding of the parameters of the engine?

This is a rhetorical question btw.

WWW.KillerRONS.COM

quote:

Originally posted by 358T:
Going from a perfect tune up with the perfect plug heat range to a colder plug and then increasing the timing or taking away fuel just to get the plug to "look" the same or "right" does not mean it will make more power. In my opinion it will probably make less and be hard on parts.

Let's say you have the perfect amount of fuel and the perfect timing and the plug looks perfect. Now you change to a hotter plug or a colder plug. The different heat exchange rate means the plug will read differently and may make a person change the fuel or timing to get the plug to look right. But all that does is take the engine out of it's optimum operating parameters. Timing and fuel requirements are determined by the engines design parameters not the plugs heat range.

quote:

Originally posted by The Bozman:
NGK9 on gas or Alky, DON'T MAKE IT HARDER THAN IT IS. Read the plug and it will tell you what it needs. end of story

ΜΟΛΩΝ ΛΑΒΕ

quote:

Originally posted by Roger McGinnis:

quote:

Originally posted by The Bozman:
NGK9 on gas or Alky, DON'T MAKE IT HARDER THAN IT IS. Read the plug and it will tell you what it needs. end of story

Maybe for a hard charger, but the OP definitely doens't need a -9. Just saying.

quote:

Maybe for a hard charger, but the OP definitely doens't need a -9. Just saying.

quote:

Originally posted by HS professor:

quote:

Maybe for a hard charger, but the OP definitely doens't need a -9. Just saying.

Silly question ........ What do mean by hard charger LOL


I'm building my first strictly alcohol car and I was planning on running NGK 9's

quote:

Originally posted by HS professor:

quote:

Maybe for a hard charger, but the OP definitely doens't need a -9. Just saying.

Silly question ........ What do mean by hard charger LOL


I'm building my first strictly alcohol car and I was planning on running NGK 9's

ΜΟΛΩΝ ΛΑΒΕ

quote:

The OP has a relatively mild engine that could be ran on pump gas on the street. I'd say you'd have to be ~1.75hp/ci before you'd ever need anything close to a -9 plug.

quote:

Originally posted by HS professor:

quote:

The OP has a relatively mild engine that could be ran on pump gas on the street. I'd say you'd have to be ~1.75hp/ci before you'd ever need anything close to a -9 plug.

I'm right at 1.58hp/ci

I'm not a soft charger am I

quote:

Medium charger.

quote:

Originally posted by HS professor:

I'm right at 1.58hp/ci

I'm not a soft charger am I

ΜΟΛΩΝ ΛΑΒΕ

quote:

Originally posted by Coloradoracer:
If you run E3, I guarantee you'll gain at least 100 hp and not less than a full tenth and several mph.......just ask them...



couldn't help it.....sorry........