bigdaddy69 Posted September 24, 2006 Report Posted September 24, 2006 today i finally installed a milled head .030 i know i need to rejet my only other mod is pro circuit pipes riding temps are 70's to mid 90's and elevation is around 3400 ft any suggestions? carbs are stock have never been touched. Quote
dajogejr Posted September 24, 2006 Report Posted September 24, 2006 Is it already correctly jetted for the pipes? If so...you may have to bump up one on the main...if anything. Compression changes and timing changes normally don't require a change in jetting, ever so small if they do. Do yourself a favor, and get a compression test done on that motor now. Be a shame to see you pop a motor because you didn't have enough octane... Quote
bigdaddy69 Posted September 24, 2006 Author Report Posted September 24, 2006 Is it already correctly jetted for the pipes? If so...you may have to bump up one on the main...if anything. Compression changes and timing changes normally don't require a change in jetting, ever so small if they do. Do yourself a favor, and get a compression test done on that motor now. Be a shame to see you pop a motor because you didn't have enough octane... no i havn't rejetted after installing pipes....i checked the compression and its in the low 150's on both sides so i didnt figure i had to run race gas but im getting close arent I? Quote
dajogejr Posted September 24, 2006 Report Posted September 24, 2006 Ok...wasn't sure by your first post... What is your airbox situation? Snorkel/lid/airbox??? K&N?? Quote
bigdaddy69 Posted September 24, 2006 Author Report Posted September 24, 2006 Ok...wasn't sure by your first post... What is your airbox situation? Snorkel/lid/airbox??? K&N?? i got a stock airbox and stock filter....plan to change is in the next couple of weeks...but i want to go ahead and rejet cuz i may not have the money then Quote
dajogejr Posted September 24, 2006 Report Posted September 24, 2006 Remove your snorkel, and put 250 mains in. You might want to lean out your needle one clip due to your elevation...if it runs kinda blubbery in the middle. Stock pilots are fine, 1.0 to 2.0 out...see which setting on the air screws gets it running the best.... Then, do a plug chop. Stock filter and stock airbox at 3500 feet, I think you'll be safe with 250s, if not a little rich... http://www.dfn.com/benkaren/plugchop.html Quote
bigdaddy69 Posted September 24, 2006 Author Report Posted September 24, 2006 Remove your snorkel, and put 250 mains in. You might want to lean out your needle one clip due to your elevation...if it runs kinda blubbery in the middle. Stock pilots are fine, 1.0 to 2.0 out...see which setting on the air screws gets it running the best.... Then, do a plug chop. Stock filter and stock airbox at 3500 feet, I think you'll be safe with 250s, if not a little rich... http://www.dfn.com/benkaren/plugchop.html I just did a plug chop last week...it showed i was prett rich smoke ring was darker then it shcould have been the reason i did it was because i wanted to know what condition i was in before i did the new head so 250 mains? isint 250 only one size bigger? im not for... sure this is the first time i have ever rejetted Quote
SkunkWerX Posted September 24, 2006 Report Posted September 24, 2006 250 is bump-up from stock. Stock you won't find any bigger than 220. 250 mains with stock air box set-up and new pipes sounds right for your elevation. Quote
dajogejr Posted September 24, 2006 Report Posted September 24, 2006 Mikuni mains run at 10 intervals, 200, 210, 220, etc. They normally come with anywhere from 190 to 210 mains, depending on your location and climate. Some dealers rejet 'em as well before they sell 'em. They are normally rich from the factory for a few reasons. rich won't burn your motor down and the stock pipe and air filter are so restrictive, it doesn't need that much gas. Quote
bigdaddy69 Posted September 24, 2006 Author Report Posted September 24, 2006 ok thanks for your help i plan to get on it in a little while but im nersin a massive hangover this morning but ill let u know how it does after rejetting Quote
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