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View Full Version : difference in sizes?!?!


Texan32
06-02-2003, 12:54 PM
could someone PLEASE explain the difference between factory jet size #'s and dynojet #'s!!!!!!
4TraxRider
06-02-2003, 02:30 PM
The dyno jet kits usually some with richer jets and needles to accomodate modified engines.
Texan32
06-02-2003, 02:37 PM
i'm talking more about comaring actual jet #'s.

Stock 148 = ? dynojet
dynojet 155 = ? stock

make more sence?
Texan32
06-03-2003, 11:10 AM
NO ONE has any idea?:confused:
Dirt
06-03-2003, 11:45 AM
All I know is that they are not the same. What are you trying to do?
Texan32
06-03-2003, 02:29 PM
long story short...had to put factory exhaust back on for a few weeks. still have factory main jet, but also have all the jets that come with the dyno jet kit. I am wondering what jet i should run, the factory 148 or one of the dynojets...still not running an airbox lid and have a K&N
JOEX
06-03-2003, 06:17 PM
There is a tool for measuring plug gaps, it's not a flat feeler guage but a wire guage. I have/had one somewhere.....I really should look for it:rolleyes: I think it might work to measure the inside diameter of the jets but I only have Kehien jets so I wont be able to compare them to Dyno jets:(

Joe
06-04-2003, 03:22 AM
remember the dyno-jets are designed to run with the dynojet needle.. The needle is tapered different compared to stock jets.. just an FYI
sly400ex
06-04-2003, 03:37 AM
Originally posted by Rico
remember the dyno-jets are designed to run with the dynojet needle.. The needle is tapered different compared to stock jets.. just an FYI

exactly......being that the needle may be a little thicker, the jet itself would have to be a little bigger (dyno jet), even though the in comparison to one another, they are physically different sizes, numerically they are the same(needle and jet).......:confused: :confused: ...OK, now I confused myself. Really, that's how it is, just kind of hard to explain.:eek2: