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 Re: Iridium spark Plugs pros/cons
[Re: ACES_HI]
#638781
08/21/05 06:43 AM
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Joined: Oct 2002
Posts: 15,887
Toyota & Classifieds Moderator
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The Bosch platinums were too hot for my truck, so went back to NGK's.
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Re: Iridium spark Plugs pros/cons
[Re: kewlynx]
#638782
08/21/05 06:54 AM
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Joined: Sep 2003
Posts: 837
Rock Warrior
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The Bosch platinums were too hot for my truck, so went back to NGK's. What sympthoms would indicate that they were too hot?
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'82 Hilux 6" lift (ACES HI)
'82 2-Hiluxs' Rally Edition (parts)
'81 Hilux 3" lift (parts/restore)
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Re: Iridium spark Plugs pros/cons
[Re: J94_4runner]
#638783
08/22/05 06:40 AM
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Joined: Oct 2004
Posts: 6,332
Trail Leader
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I happen to be a GM tech, and I can tell you the irridium plugs absolutely ROCK!
They last for just about forever and in an application like any LS1 powered car they seriously increase plug life (compared to old style plugs). 100K miles+. Very nice when you're talking about any F-body (Camaro/Firebird). I hate changing plugs on those.
Irridium plugs come stock from the factory on nearly all GM products now. If you do to your local GM dealer that's what they'll give you over the counter. I think they are either Densos or NGKs.
Clay
1990 Montero RS (In pieces... for now)
KG6VNX
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Re: Iridium spark Plugs pros/cons
[Re: 52degrees]
#638784
08/22/05 06:53 AM
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Joined: Oct 2003
Posts: 2,661
OP
Roll Me Over
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Thanks for that info. I think they're Denso. b/c that's what I think* we pulled out of his LS1. So for him it's a deffinate go. but for my 3.0v6 i'm not sure I can justify buying them ya know... I'd go NGK, not denso. NGK's have a larger tip which last longer. .6mm compare to .4mm if I recall. so for lasting.. the NGK say it's the best of both worlds.
94runner: Dana 44 SAS, 35's, Lockers, gears, winch, rock rails, bumpers, 3"BL, drivetrain lift, Budbuilt cross member, centerforce clutch and MORE! ***FOR SALE*** $8,500 -1985 Supra (STOCK!) FOR SALE $4,000 www.celicasupra.com
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Re: Iridium spark Plugs pros/cons
[Re: kewlynx]
#638785
09/11/05 05:49 PM
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Anonymous
Unregistered
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The Bosch platinums were too hot for my truck, so went back to NGK's. How could you tell? Was the engine running hot? Im thinking of switching back to NGK's also.
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Re: Iridium spark Plugs pros/cons
#638786
09/11/05 06:01 PM
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Joined: Aug 2002
Posts: 2,101
Body Damage is Cool
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too hot of a plug will make your engine ping.
'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
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'91 4x4 shortbed
22R-E, W56, the dd!
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Re: Iridium spark Plugs pros/cons
[Re: kyle-22r]
#638787
09/11/05 06:11 PM
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Joined: Oct 2003
Posts: 2,661
OP
Roll Me Over
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you can tell by how the plug looks also If i recall correctly. when I had my '89 Vette and was tuning the plugs I was using a Scanner that counted "knock counts". I ended up going with a NGK V groove 2 steps colder.. probly could have gone colder, but stopped testing there. You wanna go as cold as you can until it fouls up, then 1 hotter. you wanna be 1 heat range from fouling. but for most daily driven applications 1 or 2 steps colder is fine.
94runner: Dana 44 SAS, 35's, Lockers, gears, winch, rock rails, bumpers, 3"BL, drivetrain lift, Budbuilt cross member, centerforce clutch and MORE! ***FOR SALE*** $8,500 -1985 Supra (STOCK!) FOR SALE $4,000 www.celicasupra.com
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