speakerfritz Posted June 6, 2014 Share #1 Posted June 6, 2014 can one install the next size up jet kit with out drilling out the cap for mixture adjust. I understand that making the adjust is the optimal process....but will I gain a richer mixture at all with out the adjust. thanks Link to comment Share on other sites More sharing options...
MiCarl Posted June 6, 2014 Share #2 Posted June 6, 2014 You're going to all the trouble to pull the carbs off the bike and install jets but drilling out 4 little aluminum plugs is too inconvenient? Get the plugs out and do the job right. Link to comment Share on other sites More sharing options...
speakerfritz Posted June 9, 2014 Author Share #3 Posted June 9, 2014 thats correct....I dont want to drill the plugs out. want to know if this is another one of those 80/20 rule things. basic jet upgrade gets you 80% of the possible change of 1 yudoal and drilling...hacking...wacking...and slaping...gets you an incremental 20% of 1 yudoal . I would be fine with the 80% change of 1 yudoal its like the change your plugs and get better.....and put in washers to point the gap to the intake to get more better. I just change the plugs I dont stack washers and you probally do not either. Link to comment Share on other sites More sharing options...
dingy Posted June 9, 2014 Share #4 Posted June 9, 2014 You're going to all the trouble to pull the carbs off the bike and install jets but drilling out 4 little aluminum plugs is too inconvenient? Get the plugs out and do the job right. thats correct....I dont want to drill the plugs out. want to know if this is another one of those 80/20 rule things. basic jet upgrade gets you 80% of the possible change of 1 yudoal and drilling...hacking...wacking...and slaping...gets you an incremental 20% of 1 yudoal . I would be fine with the 80% change of 1 yudoal its like the change your plugs and get better.....and put in washers to point the gap to the intake to get more better. I just change the plugs I dont stack washers and you probally do not either. Drilling plugs out is primarily to adjust idle mixture. This is one of the basic steps most often taken well in advance of re-jetting. Shimming of needles is a separate issue. What are your expect to gain from re-jetting. Any air box or exhaust changes? Have you gotten a base line A/F reading to see what needs to be changed? Gary Link to comment Share on other sites More sharing options...
mm482 Posted June 14, 2014 Share #5 Posted June 14, 2014 (edited) Most RSV do not benefit from larger jets. On both my 2000 and my 07, I have got better mpg by lowering my metering rods .040 to .060 of an inch. Earl Edited June 15, 2014 by mm482 Link to comment Share on other sites More sharing options...
EasyRider Posted June 14, 2014 Share #6 Posted June 14, 2014 was a milage mistake unless the tech's at PCP did it wrong?? Won't do it again if I go to Bub's again:no-no-no: Link to comment Share on other sites More sharing options...
speakerfritz Posted June 16, 2014 Author Share #7 Posted June 16, 2014 Most RSV do not benefit from larger jets. On both my 2000 and my 07, I have got better mpg by lowering my metering rods .040 to .060 of an inch. Earl definitely, jetting is all about richening up the fuel mixture to achive more power ....high AFR will always result in lower MPG. Link to comment Share on other sites More sharing options...
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