HRC Plug


5 replies to this topic
  • daddyk

Posted January 13, 2007 - 02:33 PM

#1

I have an XR600 with the full HRC kit. The recomended spark plug is a NGK R 216-10, kinda hard to find. This plug dosen't extend into the combustion chamber as much as the stock NGK. I haven't found a source for the racing plug and I like to carry a spare plug just cause your suppose to. Anyone know if it's required to use the racing plug because of valve,cam,piston clearance issues and if it is, a source for them?Thanks.

  • Jon-D

Posted January 13, 2007 - 05:41 PM

#2

Does that kit come with a high compression piston? If it does, I would guess that the reason for the recessed plug is so that the piston does not hit the plug. This being the case, one possible solution is to run extra washers on the stock plug in order to meet the clearance. You can measure your stock plug and compare to the recommended HRC plug to figure out how many spacers you will need. Make sure you get a good seal between the plug and the head.

  • daddyk

Posted January 14, 2007 - 09:04 AM

#3

Thanks for the response. Yes it has the 10.6 to 1 piston and higher lift cam. I never considered a extra washer,that would be just about right. I'd like to get a new one have found one spot on the web but you really have to want a spark plug to pay $29.99 a piece

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  • rebelventurer

Posted January 14, 2007 - 04:19 PM

#4

daddyk, Is this an iridium tipped plug? If so they simply do not fail and are generally $15 or less, if its not an iridium plug $4 is all it should cost. Also have you tried cross-referencing the NGK part#? You can give Kamell at xrs only a call he is very good with parts for the HRC equipped XR's you can reach him at 760-244-2626 or at rideaide@hotmail.com :lol:

  • daddyk

Posted January 14, 2007 - 07:11 PM

#5

No it's not iridium. It's from before they came up with that. 90's technology. It's a recessed center electrode and the side electrode comes out at about a 45 degree angle.It cross refrences to a Champion A57R and I found a place that has them for $12.74 so I could try them. I'll try XRs also to see what they have. Thanks.

  • creeky

Posted January 14, 2007 - 07:47 PM

#6

No it's not iridium. It's from before they came up with that. 90's technology. It's a recessed center electrode and the side electrode comes out at about a 45 degree angle.It cross refrences to a Champion A57R and I found a place that has them for $12.74 so I could try them. I'll try XRs also to see what they have. Thanks.


I have used the Champion A57R in an HRC 628 that I used to have, it worked well for me.





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