beebs Posted June 21, 2011 Report Share Posted June 21, 2011 One of the most accurate ways to check the main jetting on a pump fuel motor is with a plug chop. Is this also the best way on a race fuel motor? Been hearing of issues with having a hard time reading color on the porcelian(spelling?) when running race fuel. Is there a better way? Tried the search but didn't find what I was looking for. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted June 21, 2011 Report Share Posted June 21, 2011 The answer to your question is yes depending on the fuel. With some fuel and or oil combinations there may be very little color. I had a hard time with VP110 and Lucas semi synthetic oil mixed 40-1. The ring you read on the porcelain was a very faint yellow and instead of any brown color so I jetted the bike with a different oil and used the VP. Quote Link to comment Share on other sites More sharing options...
beebs Posted June 21, 2011 Author Report Share Posted June 21, 2011 The answer to your question is yes depending on the fuel. With some fuel and or oil combinations there may be very little color. I had a hard time with VP110 and Lucas semi synthetic oil mixed 40-1. The ring you read on the porcelain was a very faint yellow and instead of any brown color so I jetted the bike with a different oil and used the VP. Thanks for the reply Radar, I will be using VP-C12 and Castor 927 @ 32:1. So even being hard to read a plug chop with race fuel, is it still the best way? Was it more clear when you changed oils? Quote Link to comment Share on other sites More sharing options...
beebs Posted June 21, 2011 Author Report Share Posted June 21, 2011 Anyone else using 110, do you use the plug chop or other? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted June 22, 2011 Report Share Posted June 22, 2011 Some say they have problems i have never had one with vpc-12 or 14 with klots supertechniplate,I have chopped tons of bikes Quote Link to comment Share on other sites More sharing options...
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