Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: dxmedia on February 11, 2009, 01:06:58 PM

Title: Recommended plug gap for i6 on LPG
Post by: dxmedia on February 11, 2009, 01:06:58 PM

As the title, a 4.0 in a 96 ZG.

What are people running as plug gaps, I've a flat spot the size of the fens at the moment having just replaced the dizzy, rotor arm, ht leads and plugs. I'm currently on .035 iirc

Was fine before fitting new plugs - can't check the old measurement since I was chasing a missfire.

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Post by: scrw on February 11, 2009, 01:27:05 PM

running .8mm on ngk-r plugs (was .85 before lpg)

.035" is .9mm

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Post by: dxmedia on February 11, 2009, 01:46:28 PM

Thanks

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Post by: Panic mechanic! on February 11, 2009, 01:47:32 PM

not sure how right this is but don't you change the heat range of the plug when you run on gas? standard plugs tend to be too cold if i remember.

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Post by: Panic mechanic! on February 11, 2009, 01:52:15 PM

got it the wrong way round , you run a colder plug cos they tend to burn out quicker.

 Is there a plug especially designed for use with LPG (Liquid Propane Gas)?  
Yes, NGK have recently (mid 2007) released 2 plugs which are designed to work more efficiently and last longer for LPG applications. The plugs feature a platinum chip in the ground electrode and a fine wire Iridium centre electrode. The thread and other metal parts are plated differently to reduce the possibility of a negative reaction to LPG. Part numbers are BKR6EIX-LPG and BPR6EIX-LPG, these will cover a large percentage of the UK car market.