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Ordering Main Jet

Posted: Sun Jul 12, 2009 7:33 pm
by CHEVY-212010
Can anyone direct me to a website where i can order main jets for my spree?

Thanks
Mike

Re: Ordering Main Jet

Posted: Sun Jul 12, 2009 7:52 pm
by bakaracer
what size main are you looking for.if its a oem one check babbits online or ron ayers.

Re: Ordering Main Jet

Posted: Sun Jul 12, 2009 8:38 pm
by gspreesea
I was wondering this too. Thanks for the question and answer above.
What benefits do you get from a different main jet? Is it more a throttle response type thing or better
performance or both?
I have a 84-86 Spree that I would like to re-jet, last time I cleaned I believe it had a #65 stamped into it.
Im curious to see what it will do to the Spree.
Thanks.
G

Re: Ordering Main Jet

Posted: Sun Jul 12, 2009 10:41 pm
by bakaracer
if your running with out the airbox you have to put a larger main jet to compensate for the more air flow going in.

Re: Ordering Main Jet

Posted: Mon Jul 13, 2009 9:26 pm
by CHEVY-212010
i have seen somewhere on the forum a link to a website to buy them, i just cant find it anymore :(

Re: Ordering Main Jet

Posted: Tue Jul 14, 2009 10:44 am
by Wheelman-111
Greetings:

Spreesea submitted:
What benefits do you get from a different main jet? Is it more a throttle response type thing or better
performance or both?
I have a 84-86 Spree that I would like to re-jet, last time I cleaned I believe it had a #65 stamped into it.
Im curious to see what it will do to the Spree.
You may have that jet thing a little reversed. If teams of Honda engineers determined that the 65 jet was "Right" for a stock Spree, then it follows that any other size will be "Wrong".

It's like Bakaracer said, you don't get "better" performance just from installing a new jet. You get better performance by doing something that increases the engine's capacity to process a mixture of air and fuel. If you install a less-restrictive airbox, improve internal engine flow by enlarging ports, or plug on a de-restricted muffler, you must change the size of the jet to match the increased volume of incoming air.

Throwing on a bigger jet will simply make the mixture richer than ideal. This will decrease power and produce more soot due unburnt fuel which will deposit itself on the spark plug fouling it, and exhaust system, eventually blocking flow.

Installing a smaller jet will produce a hotter-burning mixture (fuel vaporization is a big component of temperature stability) that runs the risk of an overheated bore and seizure therefrom.