Toolman Posted February 21, 2010 Share Posted February 21, 2010 Hi Guys I can see that Champion RSN12Y plugs are commonly used as a replacements for the B60 original RSN13P's. (in Ignition Matters of course :-D ) But would Champion RSN8 also make a suitable replacement? Cheers Matt Quote Link to comment Share on other sites More sharing options...
fv1609 Posted February 21, 2010 Share Posted February 21, 2010 Matt I would have thought you would be alright with RSN8. Quote Link to comment Share on other sites More sharing options...
Toolman Posted February 22, 2010 Author Share Posted February 22, 2010 Thanks Clive :-) Out of interest, whats the difference between the RSN8 and the 12Y? Cheers Matt Quote Link to comment Share on other sites More sharing options...
fv1609 Posted February 22, 2010 Share Posted February 22, 2010 With Champion plugs the digits refer to the heat range, the higher the number - the hotter: 1-25 Automotive & high performance 26-50 Aircraft 51-75 Racing 76-99 Special & Racing So RSN12Y has a higher heat range than RSN8 No suffix indicates a normal arrangement for the gap. Suffixes J, Y, R, G & P indicate variations. Y gap extends in a little further & has better anti-fouling properties as it gets hotter (also indicated by 12 rather than 8) Broadly speaking RSN8 was fitted to Series 2A FFR Rovers & RSN12Y to Series 3. If you have a choice use RSN12Y over RSN8 as the tip protrudes more it will run hotter & foul less. Although I'm on electronic ignition & whatever plug type I've tried fouling is no longer an issue. Having said that I'm pretty sure I have seen the odd RSN8 fitted on Pigs fresh from NI. Quote Link to comment Share on other sites More sharing options...
Toolman Posted February 22, 2010 Author Share Posted February 22, 2010 Thanks Clive That is great information! I shall take a print out for reference :-) Quote Link to comment Share on other sites More sharing options...
fv1609 Posted February 22, 2010 Share Posted February 22, 2010 I think I should have included that in the original article as its something that others might have wondered about. Thanks for raising the point, I think I might do a little re-write with some pics to illustrate the differences. Quote Link to comment Share on other sites More sharing options...
The Auck Posted January 26, 2012 Share Posted January 26, 2012 I have 6 boxes of the Champion RSN12Y plugs going down to Stoneleigh this weekend if anyone is interested. Clearing out things. Nigel Quote Link to comment Share on other sites More sharing options...
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