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Scooters - 50cc => Super 8 => Topic started by: crazy8 on July 29, 2014, 04:50:57 PM

Title: New exhaust
Post by: crazy8 on July 29, 2014, 04:50:57 PM

I just installed a Tecnigas Next-R on my 2T with smooth boss and 82 jet.  I easily did 42 MPH - is that about right for my mods?

Title: Re: New exhaust
Post by: gnvernon on July 29, 2014, 06:02:10 PM

upjet and bore out the airbox for a little extra speed. That exhaust is nowhere near its' limit with an 82 jet. You could get 42 MPH with those same derestrictions and a modified stock exhaust.

Title: Re: New exhaust
Post by: crazy8 on July 29, 2014, 07:36:34 PM

Thanks.  Help me understand how to bore out the air box.  I pulled the air box and didn't see a restriction.  The was a tube from the inlet to the middle of the filter, but I didn't see a restriction beyond that.  btw, my Super 8 is a 2013.

Title: Re: New exhaust
Post by: Chris0381 on July 30, 2014, 02:27:06 AM

I'd upjet to a #86 and have a #90 and #92 on stanby should you want to experiment with them. Boring the box is a bit more complicated because if you overdo it you'll need to patch it up. Try the upjet first then consider new rollers and maybe even a contra (torque spring). Just from what I have beed reading through and not personal know how.

Also consider exposing the airscrew for more tuning capabilities.

Title: Re: New exhaust
Post by: gnvernon on July 31, 2014, 01:53:19 PM

how will you know if youve opened up your airbox too much?

Title: Re: New exhaust
Post by: Chris0381 on August 01, 2014, 02:18:14 AM

Quote from: gnvernon on July 31, 2014, 01:53:19 PM

how will you know if youve opened up your airbox too much?

I guess your plug chops would come out lean or the engine overheats. Ive read a few posts where peple have had to patch it back up or get a new airbox. I'd like to know myself because I'd like to open my box and upjet more also.