spark plugs

[Trader]

Can anyone give a quick tutorial on what the codes on spark plugs mean?

for my 83 VR (1200) The manual says I need DGK DPR8EA-9 or X24EPR-U9(Nippon Denso)

(is Nipon Denso the manufacturer???)

 

 

The plugs that are in the bike from the PO are NGK R DR8ES-L (which the largest CTC in Canada (Kingston, ON) doesn't stock!

 

so...what do you folks recommend?

[Yammer Dan]

NGK DPR8EA-9's Work great. Some Autolite's work good 1164's I think but not sure right now. The Autolites are only about $1.50 each wich makes them a good deal and can be replaced without going to the bank.

[buddy]

NGK #DPR8EA-9 was used in my old 83 model.

[dingy]

Attached is PDF of NGK codes.

 

Gary

Edited July 12, 2010 by dingy
added ngk

[Trader]

Thanks Dingy! More information than I know what to do with...but I figure I can't go wrong with following the manual! (can I????)

[KiteSquid]

...for my 83 VR (1200) The manual says I need NGK DPR8EA-9 or

 

I looked in the owners manual for my 2007 RSV and it too uses the DPR8EA-9 from NGK.

 

SO I tak the sheet that dingy proviede and come up with this:

 

Thread Diamater

D: 12 mm

 

Construction

P: Projected Insulator Type

R: Resistor Type

 

Heat rating nubmer

8: 8 in a sacle from 2 (Hot) to 11 (Cold)

 

Fireing End Clonstruction

E: Electrode (14mm only) 1.5mm Insulator

A: Special Design

 

Wide Gap (Gap Width)

9: 0.9MM (0.032")

 

 

dingy,

 

Thanks for the chart.

[Yamamike]

Attached is PDF of NGK codes.

 

Gary

 

Great info Gary!! I've had the nomenclature explained to me before (heat range mostly) but this is fantastic. If you can't find the plugs you need. You can match up any brand and be sure of what you're getting.

Edited November 7, 2011 by Yamamike
booboo

[Yamamike]

Thanks Dingy! More information than I know what to do with...but I figure I can't go wrong with following the manual! (can I????)

 

Hey Trader,

IMHO you can't be wrong by following the manual but don't forget...they were written 25+ years ago and spark plug technology has evolved (like everything else).