Spark plugs
- Thread starter lee
- Start date
HuskerChop
Member
What the hell, I will throw my 2 cents in on this! I raced late models (VP Fuel) and sprintcars (Methanol) and Spanel Engines and Gaerte Engines built all of my motors. Racers are notorious for 'monkey see, monkey do' On both motors, latemodel 358 cast iron Bowtie heads and Sprint 360 aluminum heads, on the dyno, sequential pulls we compared champion vs NGK. I was surprised at results. Each spark plug change between the 2 had indexing and reach shimmed to be almost exact. On cast headed motor, champion plugs were 1.2 hp, 2.1 tq better, on aluminum headed sprint, the NGK's were the better by about same amount than Champion. Total of 4 pulls on each chg. Results were repeated. I run NGK DCPR7E in my Chopper, about $2 bucks and chg each season.
Vince81
Banned
I change the plugs in my bikes about once a month or maybe every 10 to 12 hours of riding on my street bikes - sometimes even more often than that.
Spark Plugs are cheap and it's just a regular maintenance habit of mine to grab a new set every time I clean or go over that particular bike I'm riding that day .
Grab em ,gap em , install em and grab a glance at the old ones before I chuck em in the garbage.
Vince
Spark Plugs are cheap and it's just a regular maintenance habit of mine to grab a new set every time I clean or go over that particular bike I'm riding that day .
Grab em ,gap em , install em and grab a glance at the old ones before I chuck em in the garbage.
Vince
francoblay1
The Spaniard
NGK DCPR7E @ $3.80 per pack of 10
Pack of 10 NGK DCPR7E spark plugs for $3.80 !!!
[ame=http://www.amazon.com/SPARK-PLUG-3932-Pack-10/dp/B0025QVT6G/ref=sr_1_7?ie=UTF8&qid=1343304686&sr=8-7&keywords=ngk+dcpr7e]Amazon.com: SPARK PLUG # 3932 , Pack of 10: Automotive[/ame]
But.... why when checking if it fits BDM models in the page it says "IT DOES NOT FIT"?????? What you reckon guys? In the page it states they are DCPR7E s, so.....
Also, what is the difference between DCPR7E and DCPR7ESFP
Your inputs, please?
Pack of 10 NGK DCPR7E spark plugs for $3.80 !!!
[ame=http://www.amazon.com/SPARK-PLUG-3932-Pack-10/dp/B0025QVT6G/ref=sr_1_7?ie=UTF8&qid=1343304686&sr=8-7&keywords=ngk+dcpr7e]Amazon.com: SPARK PLUG # 3932 , Pack of 10: Automotive[/ame]
But.... why when checking if it fits BDM models in the page it says "IT DOES NOT FIT"?????? What you reckon guys? In the page it states they are DCPR7E s, so.....
Also, what is the difference between DCPR7E and DCPR7ESFP
Your inputs, please?
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francoblay1
The Spaniard
I've waited for over three hours for some feedback and nothing....
Decided to buy the NGK DCPR7EIX (Iridium)
Decided to buy the NGK DCPR7EIX (Iridium)
bigdog2003
Member
A 107 is basically an Evo. I use Champion RN12YC in mine and it runs great. $2.50 a piece at my local bike shop.
bigdog2003
Member
And ... don't forget the anti-seize paste.
BigDogBro1
Made in the USA
We run Champion plugs with the smaller hex nut pattern using a 5/8" wrench. RA6HC?
Much easier to install and remove.
Much easier to install and remove.
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Jgroth41
Member
So i pulled my plugs today and i have autolite AP65 plugs..does not cross referance with anything plus they are a 14mm thread..Im told i need a champion RA8HC, N12YC or a Auto lite 4164...all of these are 12mm threads..Did the previous owner screw up ?.. Will i be able to put the proper plugs in?.. Im very concerned
Those are right for the 04 and older engines you are fine.
The quoted 12YC are for 04 and earlier.
Engines went from the S&S Super Sidewinder (SSW) to the S&S Super Sidewinder plus in 05 (SSW+). For some reason they went to a smaller plug along with a few other changes cam to crank sensor and new breathing
Sent from my 831C using Tapatalk
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Jgroth41
Member
john sachs
Well-Known Member
If your bike is jetted & timed right, you can run 20,000 + miles on a set of plugs, no problem.
Check them occasionally for build up of residue. If there's any, you need to change them. If the electrode is burnt, and really rounded, same deal.
John
Check them occasionally for build up of residue. If there's any, you need to change them. If the electrode is burnt, and really rounded, same deal.
John
john sachs
Well-Known Member
I like .035", unless the compression is over 11.5:1. Then I'll go to .032".
Be sure when replacing the plugs to make them tight. I can't count the # of bikes that come into my place with plugs that aren't as tight as they should be.
I tighten the new plug with a drop of oil on the threads, back off, and re-tighten them tight.
John
Be sure when replacing the plugs to make them tight. I can't count the # of bikes that come into my place with plugs that aren't as tight as they should be.
I tighten the new plug with a drop of oil on the threads, back off, and re-tighten them tight.
John
MossBerg590
Active Member
Do you torque them John? I always just tighten by feel but am skeptical to over tighten.
Jgroth41
Member
Update..for shits and giggles i set the plugs at .038..Big difference than .040..more power ..Tomorrow i will try the 0.35 and see how that goes.