how cold?
BCICAN
Joined: Jan 2005
Posts: 3,218
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From: Cincinnati, OH
Re: how cold? (o0oz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by o0oz »</TD></TR><TR><TD CLASS="quote">im gonna change my wires n plugs... for plugs, ppl say to get it 1-2 steps colder...how do i know what # i have now? X-1 or 2 = good right? but whats X</TD></TR></TABLE>
Well don't listen to people who just say to get 1-2 steps colder without knowing your setup and everything. Who knows maybe the stock heat range is what you need...or maybe you need 3 steps colder.
How much power do you have? I run 2 steps colder than stock, but with more power than stock. People will more power than me might run 1 more step colder than me, and with even more power they might run 2 colder than me. If you just have like intake/exhaust/etc, the stock heat range should be good for your application.
The best way to find out is to do this:
1.) Install stock heat range plugs (new).
2.) Do a WOT run in like 4th gear or something
3.) Let the car's rpm's drop <U>some</U>, but turn the car off pretty quick. Do not let it idle or drop down too much in rpm's after doing the WOT pass. Like if you rev to 8000, just let them drop to like 5000 and shut it off (with the clutch in or with it out of gear haha).
4.) Pull the plugs out and look at them. The right heat range plug will have a discolored band right in the middle of the ground strap. By middle I mean like right at the 90* bend on the ground strap.
EDIT: This is not my spark plug....just use it as a reference.
Notice that in the first picture here, you can see that discoloring thing I talked of above. The yellow arrow is pointing to it. Having the discoloring that far down on the ground strap indicates two things.....1.) You have too much timing or 2.) You're plug is too hot and you need to try one step colder.
Now in this picture, the green arrow is pointed to the area where that discoloring should be.....if you have the correct heat range plug for your application.
Well don't listen to people who just say to get 1-2 steps colder without knowing your setup and everything. Who knows maybe the stock heat range is what you need...or maybe you need 3 steps colder.
How much power do you have? I run 2 steps colder than stock, but with more power than stock. People will more power than me might run 1 more step colder than me, and with even more power they might run 2 colder than me. If you just have like intake/exhaust/etc, the stock heat range should be good for your application.
The best way to find out is to do this:
1.) Install stock heat range plugs (new).
2.) Do a WOT run in like 4th gear or something
3.) Let the car's rpm's drop <U>some</U>, but turn the car off pretty quick. Do not let it idle or drop down too much in rpm's after doing the WOT pass. Like if you rev to 8000, just let them drop to like 5000 and shut it off (with the clutch in or with it out of gear haha).
4.) Pull the plugs out and look at them. The right heat range plug will have a discolored band right in the middle of the ground strap. By middle I mean like right at the 90* bend on the ground strap.
EDIT: This is not my spark plug....just use it as a reference.
Notice that in the first picture here, you can see that discoloring thing I talked of above. The yellow arrow is pointing to it. Having the discoloring that far down on the ground strap indicates two things.....1.) You have too much timing or 2.) You're plug is too hot and you need to try one step colder.
Now in this picture, the green arrow is pointed to the area where that discoloring should be.....if you have the correct heat range plug for your application.
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