ATS_Aaron
X-
- Location
- Shady Shores, TX
I got about 1 tank full before my NGK plug ceramic broke loose from the metal. What do you guys use?
Aaron
Aaron
High compression guys: what spark plus last?
- Thread starter ATS_Aaron
- Start date
- Location
- Hutchinson, Kansas
was it one of the iridium ones? those keep breaking on me. I went back to the regular br8es plugs with the solid caps
ATS_Aaron
X-
- Location
- Shady Shores, TX
This was a BR8ES with the solid top. The porcelan center came loose from the metal outermost part. Weirdest failure I have seen. I guess I'll carry extras with me
Aaron
Aaron
- Location
- Hutchinson, Kansas
Mine was popping up and down, u could hear compression getting by it, I'm sure it has something to do with the compression and high vibration of my motor
- Location
- central florida
loose domes may cause the insulator to break (vibration)
Mile9c1
X-H2O.com
- Location
- Grand Rapids, MI
Yeah that's what I'd guess. Turbocharged cars run way higher cylinder pressures than a jetski engine does, right?
masterblaster
X-H2
yes they do and its safer to run ngk coppers cause they act like a fuse,A copper plug will fail before a cylinder fries,a plat or irid plug will handle much higher heat and alot more det and something else will let loose first.
- Location
- Corinth, TX
I have seen plenty of engines let go on copper plugs. Broken a few from detonation, but never one like Aaron broke today. The ceramic was in one piece moving up and down in the metal body. Detonation will cause much higher cylinder pressures than turbocharging. Platinum and iridum plugs are just designed to last longer between tune-ups of your average car. IMHO they have no business in a performance engine.
NVJAY775
My home away from home.
- Location
- Gardnerville, Nevada, United States
What kind of compression are you guys running? Also fuel. Unfortunately I can't offer any help, due to no knowledge. Just tryin to pick up on some. Thanks.
SUPERTUNE
Race Gas Rules
- Location
- Clearwater Fl.
Detonation is my bet!
Unless you just had a freak incident.
I have pushed engines to this limit before.
Don 79 TA
Still Fat....
- Location
- Madision/Huntsville AL
I've run high compressions in a few various motors
I've never had a problem with plugs
currently i use BPR7ES 11, solid tip plugs
I like the hotter plug since i run a heavier oil mix
I like using projected tips plugs
I do not hang the throttle wide open for more then 6 seconds, never had a need to
I also tried a Denso Iridium plug, for got the # off hand, no problem with that, other then it's a super fine tip.
I've never had a problem with plugs
currently i use BPR7ES 11, solid tip plugs
I like the hotter plug since i run a heavier oil mix
I like using projected tips plugs
I do not hang the throttle wide open for more then 6 seconds, never had a need to
I also tried a Denso Iridium plug, for got the # off hand, no problem with that, other then it's a super fine tip.
ATS_Aaron
X-
- Location
- Shady Shores, TX
I am 195psi compression and 93 pump gas. No extended full throttle runs for me.
Aaron
- Location
- Southern CT
Deto
A friend of mine had this happen just about every tank of fuel. When his motor finally blew and was torn down there were marks on the dome from the piston hitting it. It had almost no static squish clearance.
A friend of mine had this happen just about every tank of fuel. When his motor finally blew and was torn down there were marks on the dome from the piston hitting it. It had almost no static squish clearance.
SUPERJET-113
GASKETS FOR CHAMP BRAP!
- Location
- Lake Havasu City, AZ USA
:haha:
Youve had a least everything possible happen to you at least once!
I'm so glad you met Art. LOL
SUPERJET-113
GASKETS FOR CHAMP BRAP!
- Location
- Lake Havasu City, AZ USA
Sounds like a pretty fine line you are running on there....
ATS_Aaron
X-
- Location
- Shady Shores, TX
I've got some MS109 mixed with pump gas. If my math is right it should put me about 98 octane. I'll run that for a while.
Aaron
Aaron
SUPERJET-113
GASKETS FOR CHAMP BRAP!
- Location
- Lake Havasu City, AZ USA
Yeah, I would add a little of that in there for sure Aaron.
When I was at 200 lbs on my big bore w/TL with very aggressive curve, I would mix 91 pump with 110 Sunoco 50/50 and never had a problem.
Now that I think about it, Ive never cracked a plug like what you guys are talking about. Now I know what that means.
Thanks for the daily learning lesson!
When I was at 200 lbs on my big bore w/TL with very aggressive curve, I would mix 91 pump with 110 Sunoco 50/50 and never had a problem.
Now that I think about it, Ive never cracked a plug like what you guys are talking about. Now I know what that means.
Thanks for the daily learning lesson!
Last edited: