Performance Spark Plugs for the H3

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Performance Spark Plugs for the H3

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Hummer Forums >> Brand Reviews >> Drivetrain Area >> PCM & Fuel Systems >> Performance Spark Plugs for the H3

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Performance Spark Plugs for the H3 - 9/28/2006 9:38:02 AM

HummerGuy

Posts: 6406
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Does anybody know if any manufacturer has developed any performance replacement spark plugs yet for the H3? I check a couple of months ago and nobody had anything. I'm just curious. I'm going to do some searching and see if anybody like Bosch or NGK has any yet. It's only a matter of time I figure.

I actually just found that Bosch has some Iridium plugs, finally:

http://www.boschautoparts.com/RB.NA.AFTERMARKET.BOSCHAUTOPARTS.CMS/templates/VehiclePartFinder/VehiclePartFinderResultsTemplate.aspx?NRMODE=Published&NRNODEGUID=%7bB045EDBE-2735-4740-B308-1FE402C47E2A%7d&NRORIGINALURL=%2fVehiclePartFinder%2fVehiclePartFinderResults%2ehtm%3fYear%3d2006%26Make%3dHUMMER%26Model%3dH3_%26Engine%3dL5%25203%2e5%2520%28211%29%2520GAS&NRCACHEHINT=NoModifyGuest&Engine=L5%203.5%20(211)%20GAS&Model=H3_&Year=2006&Make=HUMMER

It looks like Autolite has some Iridium ones also:

http://www.autolite.com/partsCatalog/partslist.php?year=2006&make=HUMMER_TRUCK&model=H3_SUV

I'll check it out.

Does anybody know what kind the H3 has stock? After the PCM upgrade is done and I drive a couple of weeks with it and get a feel for the performance boost, this is the next thing I'm going to upgrade.

< Message edited by HummerGuy -- 9/28/2006 9:50:10 AM >

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RE: Performance Spark Plugs for the H3 - 9/28/2006 8:39:40 PM

blackstangs281

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From: Pittsburgh PA
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What's the OEM plug number?

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RE: Performance Spark Plugs for the H3 - 8/14/2007 12:55:34 PM

jesse_harriman

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Joined: 8/13/2007
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Ngk makes some, and pulstar. Ngks are about 15 bucks a pop at advanced, and pulstars are about 25 each from the pulsar site

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RE: Performance Spark Plugs for the H3 - 8/14/2007 1:29:54 PM

HummerGuy

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Ya know, I couldn't remember what these were called and have been thinking about it for a week or so. You just reminded me. Thank you VERY much

I wonder if they are really worth it though. I am tempted to buy them just to be the Guinnea Pig that tries them out.

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RE: Performance Spark Plugs for the H3 - 8/14/2007 1:41:14 PM

Doc Olds

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Joined: 7/11/2007
From: Boat Town USA (Michigan 48045)
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I have found Bosch to be a good bang for the buck. The new IRs are $10.00 ea at advance auto. At 7000 miles, I got a long way to go before a plug change, but I do have to do the oil this week..................I think I'll attack the front skid plate with my grizzly buffer and tripoli, if I have time

. I'm ordering the PCMfor less this week absotootly fer sher!!!!

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RE: Performance Spark Plugs for the H3 - 8/14/2007 2:16:06 PM

HummerGuy

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There is not going to be any magic spark plug that gives you better mileage and/or more power correct? I'm assuming the only difference between plugs are the materials and how long they last.

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RE: Performance Spark Plugs for the H3 - 8/14/2007 2:31:09 PM

Doc Olds

Posts: 3188
Joined: 7/11/2007
From: Boat Town USA (Michigan 48045)
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I would say

Using dynos at the GM Tech Center...............hope the general is not looking/listening......... when they first came out with those split fire and "u" grove plugs a ways back............if they made any power, the lab rats could not find it! Might give you a little smoother idle, (maybe) although my personal belief is idle and spark quality is more related to a good and properly functioning set of wires, not the plug itself. Better quality plugs should perform their job better longer, if you see a change in MPG, it would be coincidental, or just because you waited too long before changing the plugs.

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RE: Performance Spark Plugs for the H3 - 8/14/2007 4:59:47 PM

shortbus

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quote:

ORIGINAL: HummerGuy

I am tempted to buy them just to be the Guinnea Pig that tries them out.

considering what a great job the magnets did for you, i think you should buy 10, just in case the first 5 you put in don't do what you want. you should always have backup . . . . . . . .

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i'm leaking hydraulic fluid and have stabilator damage . . .

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RE: Performance Spark Plugs for the H3 - 8/15/2007 7:14:36 AM

HummerGuy

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quote:

ORIGINAL: shortbus

quote:

ORIGINAL: HummerGuy

I am tempted to buy them just to be the Guinnea Pig that tries them out.

considering what a great job the magnets did for you, i think you should buy 10, just in case the first 5 you put in don't do what you want. you should always have backup . . . . . . . .

You just had to bring up the magnets to Doc didn't you

Now If I ever join him at the Dunes, he'll probably tow my H3 into Lake Michigan just to teach me a lesson.

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RE: Performance Spark Plugs for the H3 - 8/15/2007 8:05:26 AM

Doc Olds

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From: Boat Town USA (Michigan 48045)
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I read up on your magnets. I hear they are introducing a new fangled Magnetic Spark Plug! We should definitely do the Dunes, with or without magnets?

This one almost got us?

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RE: Performance Spark Plugs for the H3 - 8/15/2007 8:26:57 AM

HummerGuy

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What kind of a slope angle are we talking about, or is the sign talking about a straight drop like a ACME anvil?

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RE: Performance Spark Plugs for the H3 - 8/15/2007 8:47:51 AM

Doc Olds

Posts: 3188
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From: Boat Town USA (Michigan 48045)
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Pretty flippin steep, but right at the peak caused by wind. They change (evolve) all the time and the signs get moved around. I was a panzy with my kids in the 3, so I stopped at the peak to have a look see before going all the way over. Guess what happend next??? Im sitting on the frame and can't move, threw sand up on the hood, on the roof, and in the windows (remember way back when I told you to close windows when attacking these dunes cuz sand flys everywhere???? My wife did not enjoy the face full of sand!) Couple youngsters in a Jeep with some sweet tires climbed up the back side and with my snatchem strap, gave us a tug and we were good to go. Feels pretty weird to be centered about 80 feet up a dune with the front and rear tires in the air

. Driver error. Did the same spot the next day w/o the wife and kids, and stayed in the throttle till completely over the peak, then stopped on the down side. No problems. Then I yanked out a couple youngsters in a Suburban that got burried on the up side to return the favor so to speek. It' all part of it. Man I wish I would have got a couple pics before getting un-hung. Hey, didn't even think about that stinkin onstar!!!!

Last summer, this whole ridge wasn't even here.

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RE: Performance Spark Plugs for the H3 - 8/15/2007 8:54:51 AM

HummerGuy

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That place looks huge. I'm assuming since it's sand, if you have a good coat of wax on it, the sand just slides right off?

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RE: Performance Spark Plugs for the H3 - 8/15/2007 9:31:38 AM

Doc Olds

Posts: 3188
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From: Boat Town USA (Michigan 48045)
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It really does not stick, unless it is wet. Then after it drys, just kinda blows off. The best part, I have Silver Lake Sand on my driveway after the wash on Monday night!!!! While you are up there, every time you shut a door, some sand will fall out of somewhere, the mirrors, fender well, bumper....it is a beutiful thing.

Next spring I'm gonna post an invite on the forum for anybody who wants to make a trip to come join in the fun, July or August. The h3, as heavy as it is, does pretty darn well even with my stock 33" ties at 15psi. Wider would help though. Pcm tune will be cool too. This trip I saw one H2, two H1s, and three 3s. There were other Hummers, mostly 3s, at the motels etc. in the area, but they didn't do the dunes????? Couple young ladys in a white 3, didn't even know you could ride the dunes?? Nobody home. They were like, Hey, whats up with all the flags on the trucks? I'll link some pics this weekend to try and tease the offroad sand juices and get some people thinking in the right direction. Hey, nice work on your machine. Looking good!!

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Post #: 14

RE: Performance Spark Plugs for the H3 - 11/22/2007 1:00:30 AM

TheGunnyRet

Posts: 293
Joined: 11/21/2007
Status: offline

Champion Double platinum  7437 .043"
ACDelco SPARK PLUG 41-103 SPARK PLUG, IRIDIUM
**Brisk Premium ROR15LGS spark plug. Silver Core $12.99 ea
Double platinum plug, resistor, 14mm, 1" reach, 5/8" hex, tapered seat, projected core nose
Champion Double platinum 7981 .060
Autolite XP Iridium  XP5263 .040
                               APP5263
                                AP5263
NGK Iridium plug 3474 ILTR5B11 .044" H3
Pulstar™ Pulse Plug Model: EF-1 $24.95 each
E3 Sparkplugs 2006 L5 3.5 ................................................................ E3.66

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