Brief Pictorial Guide on Changing the Main Jet on our Carbs

Posts: 113

i'm curious... where do i find a drill small enough?? the smallest i've found is 1/16 at home depot.

i finally did find a dremel drill bit in sizes of 1/32 and 3/64. the 3/64 converts to .119 roughly.

so, that's what i'm going with until i can get my hands on a 127.5.... so.... James, where are ya??

btw: the 135 is way too rich. motor won't even stay running.

thanks,
Rich

Posts: 2339

a company called hyot or hoyt makes a kit of hand drill bits the right size, you can get it at true value, also at true value you can get bits that are sized #56 etc mine are made by IRWIN bought them at True value hardware. Irwin web page is www.irwin.com

Stu

Posts: 2339

to be more exact go to this link http://www.irwin.com/irwin/consumer/jhtml/detail.jhtml?prodId=IrwinProd100152

Posts: 2339

one more, here is an ebay auction for a set of all bits....

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=58218&item=7511463016&am p;rd=1

Posts: 3561

Thanks Stu--that's just what I did when I got home. Just waiting for a nice day to try it out.

Thanks again Stu, Steve, Kell

Posts: 113

ok... i figured out the problem after taking the carb apart one more time.

the little pin that hold the float bowl on... well, it cam out and was sitting on my garage floor. Laughing

oops. anyways... i got the float bowl back on... along with the little sphere looking stop for it... and now she runs really good with the 135.

so.... i surely appreciate this thread and all the help it has provided me.

btw: my wife's now officially excited to go ride this weekend.

thanks,
Rich

Posts: 9836

Seriously consider trying a 130 jet. 135 was just to much for several of us now. I know jetting is different for different folks, ... there is not true answer, but I can tell you that with the same equipment the 135 was actually bogging down my top end.

-Steve

Posts: 19

Hi All,

I am not sure and still confused as to what size jets I should use with my SunL 150cc. Am i replaceing 1 jet or 2 jets. Currently my elevation is about 3500', does elevation matter.

Thanks
Anthony

Posts: 9836

Most aftermarket parts dealers will send you the main jet. Some will send both with their pipes if they feel there is a need. You are mainly concerned with the main jet. If you are replacing the intake, and exhaust... or hacking your own exhaust for more flow... shoot for 127.5 to 130 area if you are somewhat close to sea level. If you are way high in elevation you will need smaller... so really, you haven't given us enough info to go on here.

-Steve

Posts: 19

I don't plan on changing the exhaust yet, but I will be adding a UNI filter for air intake. My elevation in the mountains is about 3300', but there will be times where i will take the buggy out to Borego Spring in the desert.
I just want to replace the Jet for one that will give me better fuel flow, to add the the UNI filter add on. Hope this info helps with Jet size.

Thanks
Anthony