scorpaian Posted yesterday at 04:04 PM Report Share Posted yesterday at 04:04 PM (edited) Can anyone advise me what plug is needed for a 300RR fitted with S3 low compression head? A moment it has an ngk bp6 stand long reach plug, is this because of the head insert? The correct plug I seem to keep seeing is a small short reach bpmr6a? Any give me correct info? TIA Edited yesterday at 04:05 PM by scorpaian Quote Link to comment Share on other sites More sharing options...
konrad Posted yesterday at 06:31 PM Report Share Posted yesterday at 06:31 PM Quote Link to comment Share on other sites More sharing options...
scorpaian Posted yesterday at 07:23 PM Author Report Share Posted yesterday at 07:23 PM So looking at S3 website, the pics show the neck of insert where I screw in plug a lot shorter than the one I have? Was this a mistake? or just altered and I have an older model insert? So basically, the normal bike should have a small short reach plug, but as my plug head insert is longer it's had to use a normal tall plug?? Only way to use standard short plug is to turn head insert down? Quote Link to comment Share on other sites More sharing options...
lemur Posted yesterday at 07:53 PM Report Share Posted yesterday at 07:53 PM Local hardware store, it's a chainsaw sparkplug. Cheap and easy to source. Quote Link to comment Share on other sites More sharing options...
scorpaian Posted yesterday at 07:56 PM Author Report Share Posted yesterday at 07:56 PM hi, yes I have two small plugs, that's not what I was asking bro! Thanks for reply though. Quote Link to comment Share on other sites More sharing options...
lemur Posted yesterday at 08:09 PM Report Share Posted yesterday at 08:09 PM If the head needs a longer reach plug that should be easy to measure. Quote Link to comment Share on other sites More sharing options...
scorpaian Posted yesterday at 08:15 PM Author Report Share Posted yesterday at 08:15 PM Dude, you've missed the point, forget the plugs at mo, it's the insert I'm asking about, I have two short plugs (seems correct small ones) but the one in it is a long reach, why? is my insert different or incorrectly made? Anyone have an answer, I think Konrad seems to get it, but still not overly clear! 1 Quote Link to comment Share on other sites More sharing options...
lemur Posted yesterday at 08:28 PM Report Share Posted yesterday at 08:28 PM (edited) Apologies, opened his post to see what you are working with, strange way to do it. I like the stock compression, not even sure why you would want to lower it, best luck with your mod. ... I would have stuck it in my lathe and shortened the collar, looks like it has a ton of thread engagement, but we can't see what you guys can with one in hand. Edited yesterday at 08:52 PM by lemur Quote Link to comment Share on other sites More sharing options...
Tr1AL Posted yesterday at 09:47 PM Report Share Posted yesterday at 09:47 PM (edited) 1 hour ago, scorpaian said: Dude, you've missed the point, forget the plugs at mo, it's the insert I'm asking about, I have two short plugs (seems correct small ones) but the one in it is a long reach, why? is my insert different or incorrectly made? Anyone have an answer, I think Konrad seems to get it, but still not overly clear! If you click on the picture that konrad put in his reply all the information you require is in the post put up by a member using the name jer with splat shops on line shop selling the S3 head inserts. Edited yesterday at 09:49 PM by Tr1AL 1 Quote Link to comment Share on other sites More sharing options...
scorpaian Posted yesterday at 09:49 PM Author Report Share Posted yesterday at 09:49 PM Dude, you've missed the point, forget the plugs at mo, it's the insert I'm asking about, I have two short plugs (seems correct small ones) but the one in it is a long reach, why? is my insert different or incorrectly made? Anyone have an answer, I think Konrad seems to get it, but still not overly clear! Quote Link to comment Share on other sites More sharing options...
scorpaian Posted yesterday at 09:50 PM Author Report Share Posted yesterday at 09:50 PM Yes I've seen the splatshop description, it's very confusing but I get it now, basically I need to buy long reach NGK BP6RES plugs!! Quote Link to comment Share on other sites More sharing options...
arnoux Posted 23 hours ago Report Share Posted 23 hours ago (edited) There is an S3 low plug type that takes the BPMR6A plug (stock plug) and fits the standard TRS head cover. https://www.thehellteam.com/trs-cylinder-head-insert Edited 23 hours ago by arnoux Quote Link to comment Share on other sites More sharing options...
scorpaian Posted 23 hours ago Author Report Share Posted 23 hours ago 1 minute ago, arnoux said: There is an S3 low plug type that takes the BPMR6A plug (stock plug) and fits the standard TRS head cover. https://www.thehellteam.com/trs-cylinder-head-insert is this lower comp? Quote Link to comment Share on other sites More sharing options...
arnoux Posted 23 hours ago Report Share Posted 23 hours ago 26 minutes ago, scorpaian said: Dude, you've missed the point, forget the plugs at mo, it's the insert I'm asking about, I have two short plugs (seems correct small ones) but the one in it is a long reach, why? is my insert different or incorrectly made? Anyone have an answer, I think Konrad seems to get it, but still not overly clear! S3 make two different high comp 300 inserts. One is for fitting a short BPMR6A plug as found on RR, R and ONE models, and one that takes the BPR5ES longer plug that is fitted to the GOLD model. Quote Link to comment Share on other sites More sharing options...
arnoux Posted 23 hours ago Report Share Posted 23 hours ago 3 minutes ago, scorpaian said: is this lower comp? NO. S3 colour code their inserts: Yellow / Gold = Low Compression Silver / raw aluminium finish = stock compression Red is always the hi Comp variant. Quote Link to comment Share on other sites More sharing options...
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