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post #1 of 5 (permalink) Old 10-19-03, 07:04 AM Thread Starter
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plugs for 351 LPG

Went to my supplier ,he said hotter plugs for LPG
Went to the bosch plug site & they said colder plugs for LPG
Totaly confused! aussie G
Thanks for your help !
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post #2 of 5 (permalink) Old 10-19-03, 03:19 PM
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Re: plugs for 351 LPG

Well Bosch said colder, NGK say colder, so that's 2 out of 3. Remember the combustion temps are hotter with LPG, so you need a cooler plug to dissipate the extra heat.

http://www.ngk.com.au/bulletin_T92-1.htm

Also:

Quote:
<b>The heat range numbers used by the various manufacturers are not universal</b>, by that we mean, a 10 heat range in Champion is not the same as a 10 heat range in NGK. Some manufacturers numbering systems are opposite the other, for American manufacturers (Champion, Autolite, Splitfire the higher the number, the <b>hotter</b> the plug. For Japanese manufacturers (NGK, Denso), the higher the number, the <b>colder</b> the plug.
cheers

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Last edited by TopGhia; 10-19-03 at 04:18 PM.
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post #3 of 5 (permalink) Old 10-20-03, 05:56 AM Thread Starter
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Re: plugs for 351 LPG

Thanks for that.
My experiance of putting hotter plugs in motorbikes, we always ended burning holes in pistons .
CHEERS
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post #4 of 5 (permalink) Old 10-20-03, 06:07 AM
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Re: plugs for 351 LPG

1 range lower is all you need. Never hotter!

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post #5 of 5 (permalink) Old 10-20-03, 07:54 PM
must stay under 0.25 ppd.
 
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Re: plugs for 351 LPG

Ngk Bp6fs

Well done SA pollies (for once). Hoon laws are long overdue to protect car enthusiasts against idiot drivers.
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