colder spark plugs
Jul 14, 2008, 09:12 PM
#1
colder spark plugs
hello,
I am getting tuned in a week and a half and i want to make sure that my car is fully ready. It has basic bolt ons such as intake tbe ebc front mount licp etc. Should i swap my plugs for one step colder plugs? If so which ones? Thanks in advance!
I am getting tuned in a week and a half and i want to make sure that my car is fully ready. It has basic bolt ons such as intake tbe ebc front mount licp etc. Should i swap my plugs for one step colder plugs? If so which ones? Thanks in advance!
He didn't say for every 100 hp increase over stock go a step colder.
Jul 15, 2008, 05:19 PM
#6
Colder plugs allow more heat to escape from the combustion chamber. This gives you more wiggle room to add more chamber pressure (boost or timing) without auto ignition. The downside, is if you go too cold, you will foul your plugs a lot, because they don't burn hot enough to keep the carbon build up off of them. Stock is 7 in the heat range and I run 8 heat range plugs (NGK BPR8ES), but have known people to run 9 without too much trouble.
Last edited by fre; Jul 15, 2008 at 05:21 PM.
Jul 15, 2008, 05:28 PM
#7
My reason for saying 100 hp is based on heat control, not some generic answer. For me, I use pump gas more often than any other fuel, usually 93 octane. When I try to push it a little I like the cushion of the colder heat range on my plug.
The one step colder helps in detonation as most everyone will attest, by removing heat from the combustion chamber. Now, if someone uses race fuel, or meth, that is an added type of detonation control. Beyond that we start looking at ways to reduce back presure, like head porting, turbo porting, ect, ect. ... basically it all about heat control.
...and please stop blowing this out of proportion, if the OP has asked the question about plugs initially he obviously has a steep learning curve ahead of him/her before 550 hp. The information to understand how a motor works and to make power is already enough to get confused. Have some respect for the OP.
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Jul 15, 2008, 06:36 PM
#9
i appreciate all the advice i have been given to this point. Im still a little confused however. I have always heard that for every 50hp you should go one step colder plugs such as with a shot of nitrous. Anyway my car will not be putting down an increase in 100hp obviously.
Is running one step plugs going to benefit my car in anyway?
Im aware that if colder plugs arent needed then it will hurt gas millage and probably other things so im trying to become educated before just going out and doing... any other feedback would be greatly appreciated!
Is running one step plugs going to benefit my car in anyway?
Im aware that if colder plugs arent needed then it will hurt gas millage and probably other things so im trying to become educated before just going out and doing... any other feedback would be greatly appreciated!
Jul 15, 2008, 07:24 PM
#10
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basicly its like this to simplify it...
if ur stockish and have few mods just get stock plugs. you don't have enough changes to need different plugs.
if ur decently modded with some bolt ons and tuned with either heavily advanced timing or high boost then just get the 8's which are the 1 step colder and replace them every like 6k miles for best results. plugs r only 2 bucks each and take minutes to change so keep up with em for optimum performance
if ur stockish and have few mods just get stock plugs. you don't have enough changes to need different plugs.
if ur decently modded with some bolt ons and tuned with either heavily advanced timing or high boost then just get the 8's which are the 1 step colder and replace them every like 6k miles for best results. plugs r only 2 bucks each and take minutes to change so keep up with em for optimum performance
Jul 16, 2008, 06:01 AM
#11
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Relax man, we are all trying to go fast here on EvoM.
My reason for saying 100 hp is based on heat control, not some generic answer. For me, I use pump gas more often than any other fuel, usually 93 octane. When I try to push it a little I like the cushion of the colder heat range on my plug.
The one step colder helps in detonation as most everyone will attest, by removing heat from the combustion chamber. Now, if someone uses race fuel, or meth, that is an added type of detonation control. Beyond that we start looking at ways to reduce back presure, like head porting, turbo porting, ect, ect. ... basically it all about heat control.
...and please stop blowing this out of proportion, if the OP has asked the question about plugs initially he obviously has a steep learning curve ahead of him/her before 550 hp. The information to understand how a motor works and to make power is already enough to get confused. Have some respect for the OP.
My reason for saying 100 hp is based on heat control, not some generic answer. For me, I use pump gas more often than any other fuel, usually 93 octane. When I try to push it a little I like the cushion of the colder heat range on my plug.
The one step colder helps in detonation as most everyone will attest, by removing heat from the combustion chamber. Now, if someone uses race fuel, or meth, that is an added type of detonation control. Beyond that we start looking at ways to reduce back presure, like head porting, turbo porting, ect, ect. ... basically it all about heat control.
...and please stop blowing this out of proportion, if the OP has asked the question about plugs initially he obviously has a steep learning curve ahead of him/her before 550 hp. The information to understand how a motor works and to make power is already enough to get confused. Have some respect for the OP.
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