Spark Plug Heat Range For Turbocharged Engine

[CarMichael Angelo]

Trying to decide on which plugs to start off with as far as heat range goes. Naturally, the plug number is nothing anybody here would be familiar with, so I'm just asking in general.
Do I start out w/ a standard heat range plug, or step it one colder for initial start up?

 

[madspeed]

You wil want one heat range colder to start

 

[jrichker]

Try two ranges colder and .030-.035 plug gap for a start.

Do you have any plans to an alcohol/water injection system to reduce intake manifold temps and possible detonation? If and you haven't already purchased one, I have some ideas for a simple controller that uses input from the TPS sensor and input from an analog MAP sensor.

 

[mikestang63]

Two steps colder with a smaller gap is what I would do. Always start off conservative. Ultimately it depends on how much boost you plan on running and you'll get a better feel after reading the plugs after it runs for a while .

 

[CarMichael Angelo]

Try two ranges colder and .030-.035 plug gap for a start.

Do you have any plans to an alcohol/water injection system to reduce intake manifold temps and possible detonation? If and you haven't already purchased one, I have some ideas for a simple controller that uses input from the TPS sensor and input from an analog MAP sensor.

A meth inj system is probably looking more likely, I checked my Mallory pump, and it isn't rated to pump E85, so I'll have to fall back to a system like you are talking about.

I am interested in hearing your ideas, a simple system is about all I can muster now that I just spent 600.00 on an oil pump.

 

[HotFox]

Call NGK tech line. They are really good at a starting point.

I would actually start warmer for start up since idle and no load trying to minimize fuel wash to seat rings.

 

[madspeed]

I can hear that coversation.... Yeah, I've got a Ford Fairmont with an aussied headed turboe'd straight 6..... Um, sorry sir' that's not in the book

 

[HotFox]

They ask plug style, compression ect. If they can get me close from mild to wild tractor engines. I'm sure Mike's no problem!

 

[Gearbanger 101]

I've always gone 2-heat ranges, gapped at about .035 for any power adder application.

 

[RangerJoe]

A meth inj system is probably looking more likely, I checked my Mallory pump, and it isn't rated to pump E85, so I'll have to fall back to a system like you are talking about.

I am interested in hearing your ideas, a simple system is about all I can muster now that I just spent 600.00 on an oil pump.

Man, that's hard to swallow when a HV pump can be had for under $50. I understand why you did it, but I bet it hurt.

Joe

 

[Noobz347]

Another vote for two heat ranges and closing the gap.

Additionally,
the word
"indexing"
comes to mind.

 

[84Ttop]

2 heat ranges colder here also. Under 20lbs of boost .030 gap

 

[7991LXnSHO]

Is the Meth injection system for the car or to keep the owner tweaking things?
Two steps cooler and read plugs sounds great, but cooler than what is a better question!

 

[CarMichael Angelo]

Oh I found the plug, it's just not familiar to me. I'm used to Motorcraft/Autolite numbers on windsor engines. Now I gotta plug that has a number like a Motorcraft AGS 52/42/32C, Autolite 65/64, an NGK BPR5E.
I know that the Motorcraft 52 is gonna be considered stock, so I'll shoot for the 32C then.

Thanks guys.