I ordered my pipe, but it slipped my mind to order a jet kit.

and i have my last riding thing sunday..for the year..

and well even with my bruised ribs i am going to take it easy..

now onto my question..will i be ok with stock jetting for now..i know how to check it..but what are my chances it will be acceptable.

it will be cool so a slight bit Lean will be ok.....too rich would be a problem..

now i also have a Uni Filter ordered..should i just leave it off till i get my jets?

Thanks all

 

Aaron -

Unless you are getting a E.A.R. series pipe, the probablity is high that you will be running too lean. Lean enough that damage will occur - maybe not noticed right away, but you may certainly serverely shorten the life of your engine.

Another point to consider: If you just put on the pipe and fail to rejet, you are not easing the restriction on fuel delivery. Therefore, you will not notice much (if any) gain in power. It may feel faster, because its louder, but in reality, it isn't.

As far as the filter goes, its best to do all your mods first, then rejet. That way, you'll only have to rejet once.

I can understand the frustration of getting new mods and wanting to use them quickly - I still get that feeling.

My best advice to in order to have a win-win situation, is to have a game plan before your mods arrive. Go to the tech connection and read all the questions and answers under the carburation section of the advanced search; these answers include not buying a jet kit - but rather just buying the jets individually from your dealer. Then, inspect your quad, maybe removing all the parts that are being replaced. Finally, check how your carb is placed, looking for easy ways to do a main jet change out. On my 400ex, you can actually just remove the bolt on the bottom of the carb and use a socket to remove and install the jet. It is super easy to do.

Using this method, you can prepare yourself and when you get your parts, can quickly finish your mods the right way.

Hope this helps,
ogre

 

i know all about jetting and doing mods

just plain forgot about ordering my jet kit..and now it wouldn't be in on time..!


hmm..i will have to run up to the honda shop after school tomorrow and buy myself like 3 main jets..

since stock is a 220..i'll get a

230 240 and a 250..just to be safe.

main jets are a breeze to install on the 300ex..just take out the nut on the bottom screw in screw out..

I was just hoping i could wait..i wanted to order a complete jet kit from LRD..

 

Sorry, didn't mean to insult your intelligence, I just wanted you to be informed of your options.
You might want to some sizes in between your increments of 10's, like a 225, 227.5 or 228 (not sure of jetting sizes on your machine), etc.

The rule I've heard is that you should buy the next 5 sizes larger main jet, as a best bet.

When I rejeted my 400ex for a pipe I went up from a stock 148 to a 165, which is 7 sizes larger. I've found that buying extra jets always pays, because you'll need the extra ones only when the dealership is closed. Plus, I've found that they usually gladly accept unneeded jets as returns.

ogre

 

i understand

hmm..yeah

i will ask them what they think would work.

I've always heard one size for each mod..

so that would be a 240 for a uni and an exhuast