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jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 1:03 am
by Rob
i have a 1995 elite dio motor i installed a 72cc big bore kit on and plan on using stock airbox and carb i am wondering what size main jet i will need to make this run good any help will be great
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Re: jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 1:21 am
by mookie
the smarter scooter tuner guys may tell you different but i'd say at least a 92 to 95. stock pipe ?
aftermarket pipe? 115ish
Re: jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 8:11 am
by Rob
stock pipe derestricted
Re: jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 8:16 am
by Wheelman-111
Greetings:
I briefly went through this tuning process with Flash III. With the stock box and a well-oiled filter, I was running quite rich with a high-90s jet. I went all the way down to an 88 with the V8 pipe. However I recommend you start where Mookie suggests and verify on your own bike. Watch the temp gauge (you have one, don't you?
) or pull that plug often to check.
Re: jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 10:44 am
by nacree
Wheelman,
Where did you get your cylinder head temp gauge?
Thanks,
Nathan
CHT
Posted: Sun Oct 04, 2009 11:50 am
by Wheelman-111
Greetings:
I lucked into mine on eBay. It came from an ex-BMW bike dealership for $25. It's an analog VDO and gets the job done but I'd get a TrailTech Vapor if I could afford it.
Re: jet size for my 72 cc big bore kit
Posted: Sun Oct 04, 2009 7:15 pm
by Rob
well did some tuning on my scooter today and came to find out the 88 jet is real close a tad rich but that is ok .
summer is over and this winter i plan on buying a pipe so i will leave it alone and break it in on the rich side for now .
the plug color is on the dark brown side when i pulled it out so i know im safe