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-   -   Spark Plug's time to change !! (https://ls1tech.com/forums/generation-iii-external-engine/1324772-spark-plugs-time-change.html)

Reaperchild Aug 31, 2010 03:07 PM

Spark Plug's time to change !!
 
I tried a few searches here & there for a proper write up on how to CORRECTLY install spark plug's with PROPER GAPPING !! ...
Got 8 NGK TR55 Spark Plug's,
NOT TO MENTION THE STOCK 99 EXHAUST MANIFOLD'S =(
Can somebody please help me understand how to gap my spark plug's ??
what are the tool's required for an easy day of work (not to spend 1/2 a day on 1 plug) .... i think a write up haven't yet been done in this forum, right ?

Any USEFULL input is appreciated =)
regards

WYATT318MOPAR Aug 31, 2010 03:19 PM

Should be all you need besides a 5/8 deep well socket and ratchet
http://i237.photobucket.com/albums/f...d/DSC01666.jpg

StuntmanMike Aug 31, 2010 03:49 PM

I also found a a few extensions helpful, I used a .75" and 3", IIRC.

And #8 is WAY easier from underneath, unless you have arms like Popeye. I was able to do the plug AND wire from underneath. It was actually pretty easy, IIRC #6 was harder.

King Nothing Aug 31, 2010 03:54 PM

take off the coil packs from the valve covers also, that helps too

StuntmanMike Aug 31, 2010 04:12 PM


Originally Posted by King Nothing (Post 13805439)
take off the coil packs from the valve covers also, that helps too

I started to do that, but the last bolt was such a PITA to get at I said the hell with it and left them on. It was easy enough to do with them on, the only thing is the heads of the bolts will dig into your arm a bit at times.

Phil'sC5vette Aug 31, 2010 04:35 PM

what are you gaping them to ?

King Nothing Aug 31, 2010 04:38 PM


Originally Posted by StuntmanMike (Post 13805531)
I started to do that, but the last bolt was such a PITA to get at I said the hell with it and left them on. It was easy enough to do with them on, the only thing is the heads of the bolts will dig into your arm a bit at times.

suck it up and get that last bolt! lol

slt200mph Aug 31, 2010 05:32 PM

After you remove the last bolt on the passenger side coil pack bracket thow the bolt away..you do not need it..unles you have a 1998 model..if so disreguard that thow it away statement...:D

check out this link it may answer your questions.

http://www.installuniversity.com/ins...g_and_wire.htm

Element Aug 31, 2010 05:57 PM

The last set of TR55s I got were actually really close to the stock recommended gap.

I don't have too much trouble getting to the plugs even with the coil packs on (#8 actually isn't the worst for me, but then again, I'm short enough that I can put a knee on the battery and lean/lay into the engine bay), it's the god damned plug boots that drive me insane. My hands are too big to really fit down in there, so I'm always trying to figure out if the damned boots are seated right.

TORCHD 02 TA Sep 2, 2010 08:07 AM


Originally Posted by StuntmanMike (Post 13805531)
I started to do that, but the last bolt was such a PITA to get at I said the hell with it and left them on. It was easy enough to do with them on, the only thing is the heads of the bolts will dig into your arm a bit at times.

Force yourself and get that last bolt.. You're right it is a PITA.. But when you go and put the coil brackets back on jsut leave that bolt off.. I did :D

TORCHD 02 TA Sep 2, 2010 08:12 AM


Originally Posted by WYATT318MOPAR (Post 13805259)
Should be all you need besides a 5/8 deep well socket and ratchet
http://i237.photobucket.com/albums/f...d/DSC01666.jpg

Stupid question.. When you gap a plug, where do you want the plug to sit on the gapper?

So say you are gappign the plug to .060" do you want the .060" number to read on the middle of the plug, or to the left or right side of the plug?

Z Fury Sep 2, 2010 11:26 AM


Originally Posted by TORCHD 02 TA (Post 13813269)
Stupid question.. When you gap a plug, where do you want the plug to sit on the gapper?

So say you are gappign the plug to .060" do you want the .060" number to read on the middle of the plug, or to the left or right side of the plug?

The tool gaps the plug wider as the plug moves around the gap tool. In the picture above, the plug is gapped to 0.040. If you measured at the middle, the gap would be slightly larger (the width of the spark plug comes into play here, as it rotates up the "ramp" of the tool).

I was going to draw an MS paint picture to illustrate my point, but you really don't want to see my horribly lacking MS paint skills.

TORCHD 02 TA Sep 2, 2010 11:48 AM


Originally Posted by Z Fury (Post 13814020)
The tool gaps the plug wider as the plug moves around the gap tool. In the picture above, the plug is gapped to 0.040. If you measured at the middle, the gap would be slightly larger (the width of the spark plug comes into play here, as it rotates up the "ramp" of the tool).

I was going to draw an MS paint picture to illustrate my point, but you really don't want to see my horribly lacking MS paint skills.

Yeah I know that the gap gets bigger lol..

So in that pic, you say that's at .040".. Now are you looking at the right side of the edge of the plug? That's how I see the .040"

djfury05 Sep 2, 2010 01:33 PM


Originally Posted by TORCHD 02 TA (Post 13814116)
Yeah I know that the gap gets bigger lol..

So in that pic, you say that's at .040".. Now are you looking at the right side of the edge of the plug? That's how I see the .040"

yes sir, read on the right edge of the plug's prong :D

LS1WS6dreamer Sep 2, 2010 03:19 PM

I changed my plugs out a few thousand miles ago and I can't remember what I gapped them at. It was what everybody on the board suggests. I am gonna change them again when I do the LT's. Just wondering what the suggested gap size was. Car says .060, but thats too big of a gap according to the LS1 gurus.
Can't believe I forgot what I gapped them at. lol

King Nothing Sep 2, 2010 03:32 PM

^gap them at 55 and you should be good

TORCHD 02 TA Sep 2, 2010 07:02 PM


Originally Posted by djfury05 (Post 13814534)
yes sir, read on the right edge of the plug's prong :D

Sweet.. Thank you very much :D

LS1WS6dreamer Sep 2, 2010 11:30 PM


Originally Posted by King Nothing (Post 13815017)
^gap them at 55 and you should be good

I am thinking thats what I gapped them at when I changed them. I am also wondering if its worth changing them since they'll have like 2000 miles on them when I do LT's.

Z Fury Sep 3, 2010 11:13 AM


Originally Posted by TORCHD 02 TA (Post 13814116)
Yeah I know that the gap gets bigger lol..

So in that pic, you say that's at .040".. Now are you looking at the right side of the edge of the plug? That's how I see the .040"

Sorry, I didn't mean to insult your intelligence. I just figured I'd be as descriptive as possible in case others reading had the same questions. :cheers:

Reaperchild Sep 7, 2010 11:44 AM

now that is all the info required... getting my engine mounts in & the plugs right after ... thank you all


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