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martho

Spark plug gap

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martho

Im replacing the plugs in my 01 Monsoon. The Indmar manual says .045".

I have read on some of the forums that people are using .060"

What are you running?

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NorCaliBu

I use .044. My gap guage has a .044 "wire" and a .048 "wire". Nothing in between. I figure 1/1000 of an inch isn't gonna hurt much.

EDIT: missed it by a decimal place Crazy.gif

Edited by NorCaliBu

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BarefootOz

Martho- MR43LTS .045"

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Skiier64

.045 for me also.

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edwin

.045 as well

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mlange

Also MR43LTS at .045.

All of these plugs I've put in always seem to be gapped perfectly out-of-the-box.

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BillFooter

Why would someone use .060 if the manual calls for .045?

Bill

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edwin
Why would someone use .060 if the manual calls for .045?

Bill

Bill - probably some Texan did that...ya know, bigger is always better down there ;)

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dlb

.045, I have had to adjust only 1 plug in 3 years of annual changes.

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martho

Let's take this one step further.

Has anyone used a plug other than AC Delco? I see Champion makes an RS12YC which is supposed to be the same plug.

Just curious....

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CarveItUp

We've only had our '00 SLXi since last September. I replaced all the plugs when we bought it because they were the original plugs. Our local NAPA had the OEM plugs and I didn't see any reason to change at that point since I could get the OEM version easily.

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edwin

I just order em up from skidim..they always send the Delco.

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jklein

NGK BPR6EFS (Gapped at 0.045 per Indmar specification) Monsoon.

There's a post in the Technical Projects area that lists all of the maintenance parts I use.

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HRemington

mark, I just put that Champion plug in you asked about. When I pulled my old ones, that's what they were, so I got the same. Gapped perfectly out of the box and work fine.

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Pistol Pete
Why would someone use .060 if the manual calls for .045?

The larger gap will require more voltage to jump the gap and therefore be a larger spark. Some people will say this will cause a better burn in the cylinder, others will say this will shorten the plug and ignition coil's life.

I say, do what Indmar tells you to do. There won't be any noticeable gain in power due to a larger gap.

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D-GOOSE

I would stay with the NGK and .045 gap. As PP stated it would take more voltage from the coil and shorten its life. With that said, newer cars have a larger spark plug gap but they also have a coil for each cyl. thous the coil has time to cool down between firing and recharge.

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Pistol Pete

Gotta love C.O.P.

Oh wait, I just had to buy 4 new ones to match the 6 fairly new ones in my ford truck.

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