1 Step Colder Spark Plugs
#1
Join Date: Apr 2007
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1 Step Colder Spark Plugs
I am having a really hard time looking for 1-Step colder spark plugs for the VQ35HR. Has anyone been able to find a set? I wouldn't feel comfortable spraying without them.
I believe the OEM part number is 22401EW61C.
The only after market plugs I was able to find were the FXE22HR11 from Denso, but they're not colder.
I believe the OEM part number is 22401EW61C.
The only after market plugs I was able to find were the FXE22HR11 from Denso, but they're not colder.
#2
Okay here is what I found.
The NGK plug for the HR motor is a 3442 for which the NGK number is R5673-9. On NGK, the number after the - is the heat range and the larger the number, the colder the plug is. So, you can actually get a R5673-10
http://www.google.com/products?hl=en...-revision&cd=1
The NGK plug for the HR motor is a 3442 for which the NGK number is R5673-9. On NGK, the number after the - is the heat range and the larger the number, the colder the plug is. So, you can actually get a R5673-10
http://www.google.com/products?hl=en...-revision&cd=1
#7
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#8
A colder plug is safer because it lowers the risk of detonation...don't know where the "1 Step colder plug for every 100HP or so" came from, in my case my 400WHP SE-R would need about 3 steps colder plugs (which is not the case) but its a general rule to run atleast 1 step colder when detonation could be a problem.
You just need to worry about the thread size and resistance type (and obviously heat). Other than that, there isn't much about being vehicle/motor specific. I'm sure the plugs that fit/work on the HR motor is on a ton load of other cars/motors as well.
You just need to worry about the thread size and resistance type (and obviously heat). Other than that, there isn't much about being vehicle/motor specific. I'm sure the plugs that fit/work on the HR motor is on a ton load of other cars/motors as well.
#9
#10
Originally Posted by blkdragn
A colder plug is safer because it lowers the risk of detonation...don't know where the "1 Step colder plug for every 100HP or so" came from, in my case my 400WHP SE-R would need about 3 steps colder plugs (which is not the case) but its a general rule to run atleast 1 step colder when detonation could be a problem.
You just need to worry about the thread size and resistance type (and obviously heat). Other than that, there isn't much about being vehicle/motor specific. I'm sure the plugs that fit/work on the HR motor is on a ton load of other cars/motors as well.
You just need to worry about the thread size and resistance type (and obviously heat). Other than that, there isn't much about being vehicle/motor specific. I'm sure the plugs that fit/work on the HR motor is on a ton load of other cars/motors as well.
Here's the info from NGK's website:
http://www.ngksparkplugs.com/tech_su...d.asp?mode=nml
"Typically, for every 75-100 hp you add, you should go one step colder on the spark plug's heat range."
#11
Originally Posted by Triton3.5
snowcross,, your joking right?? do colder heat range plugs change are snowmobile engines timing??? heck no!!!!!
actually it does, depends on how much compression you are running, type of fuel
here let me google it for you
http://www.ronlund.com/shim.htm
http://en.wikibooks.org/wiki/Reading...ugs_for_racing
http://www.innovatemotorsports.com/f...hp/t-1036.html
#12
Originally Posted by snowcrossmxz
actually it does, depends on how much compression you are running, type of fuel
here let me google it for you
http://www.ronlund.com/shim.htm
http://en.wikibooks.org/wiki/Reading...ugs_for_racing
http://www.innovatemotorsports.com/f...hp/t-1036.html
here let me google it for you
http://www.ronlund.com/shim.htm
http://en.wikibooks.org/wiki/Reading...ugs_for_racing
http://www.innovatemotorsports.com/f...hp/t-1036.html
Back to the subject, 1 step colder should be fine for Nitrous.
#14
Maybe I was confusing with my statement. Like you said timeing can't "directly" be changed by plug teps. But changing the temp of your plug will have the same net effect as a timeing change of +- 1 or 2 deg if you are having a problem with pinging.
It's like fine tuneing it
Would u agree?
It's like fine tuneing it
Would u agree?