450r tuners in tampa area?

emaxxjeremy · December 02, 2005, 08:03:18 PM

i am having some carb issues with my 450r. anyone locally that isnt a hack to check it out?
i am running a stock motor and exhaust, open airbox and uni filter, it seems i just cant to get it to run decent. up to a 180 main and it still sputters and stalls, and the plug says its still lean

trx#9 · December 02, 2005, 11:04:17 PM

Hey try a 190 or maybe a 195 believe it or not thats not to big for stock motor. I live in holiday fl. by the way!!!!

emaxxjeremy · December 03, 2005, 03:44:08 AM

that just sounds huge. most reccomend up to a 185 with an aftermarket exhaust.
i think my jet kit only goes to a 180

trx#9 · December 03, 2005, 03:56:53 AM

Try the 185 I think I was running 190 with that same set up, but I had a k&n instead. Looks like your going have to get some jets tomorrow huh!

Nightbreed · December 03, 2005, 06:53:29 PM

You are way to big on the main jet for a stock exhaust system. Try dropping back to a 125 and go from there. Call me if you need.

Mike

trx#9 · December 04, 2005, 06:43:38 AM

After reading what mike from ATP said, I look back and realize I read your first post wrong I thought you had a pipe on it sorry I'm a dumb a$$ THANKS MIKE good thing you can read I can't

So from now on just call ATP racing and talk to mike he knows his $hit he builds motors and tunes somes of the fastest riders in Florida's and their mostly on honda's

emaxxjeremy · December 04, 2005, 01:11:19 PM

i also have an hrc end cap coming for it.
but what is strange is it runs like its lean, and the plug looks like its lean.

Nightbreed · December 05, 2005, 07:18:49 PM

You will find that on some of the new four strokes, the plug is not always the best gauge for tuning. I have found in some extreem cases, that an overly rich plug has washed the plug clean.

Let me know if we can be of any help.

Mike

emaxxjeremy · December 06, 2005, 12:56:19 AM

well i got my range from 450r.org
here is the jetting post
http://www.trx450r.org/forum/index.php?showtopic=1657

STOCK PLUS HRC END CAP OR SLIP-ON WITH LID ON
------------------------------------------------------------------
120 Main
48 Pilot
Air screw 2-2.25 OUT
Stock Needle on 3rd clip

STOCK PLUS HRC END CAP AND VENTED BOX OR LID
------------------------------------------------------------------
150-165 Main
48 Pilot
Air Screw 2-2.25 OUT
Stock Needle on 3rd clip

STOCK PLUS HRC END CAP AND OPEN, HRC, EHS OR K&N LID
----------------------------------------------------------------------------
180-190 Main
48 Pilot
Air Screw 2-2.75 OUT
HRC, Sparks, or DynoJet Needle on 3rd or 4th clip (try both)

trx#9 · December 06, 2005, 01:10:24 AM

Maybe i was right the first time, its been so long ago since my bike was stock its hard to remember.

The hyrbid kid · December 06, 2005, 01:16:46 AM

ok with a stock exhaust and no lid..
182 runs great in both bikes i have messed with..

Nightbreed · December 06, 2005, 04:36:37 AM

you said in the first post, stock exhaust. like i said, a 125. but now you say you have an end cap? you are confusing the heck out of me.

LE450-RACER#77 · December 06, 2005, 05:39:46 AM

ALSO BEFORE ANYONE CAN HELP YOU TELL THEM THE NEEDLE THAT YOU HAVE BECAUSE THAT MAKES A HUGE DIFFERENCE IN JET SIZE.

emaxxjeremy · December 06, 2005, 10:51:56 AM

i am running the dynojet needle on #3
i have an hrc end cap on the way. its not currently installed, but it will be soon. i would go with a slip on, but i have to watch my noise level

A.T.P. RACING · December 06, 2005, 02:46:34 PM

If you would like, give us a call at the shop. I can probably walk you through it over the phone.

Mike

emaxxjeremy · December 07, 2005, 10:55:27 AM

i also noticed that it cuts out at the upper rpm's, much like it did before with the lid on, like its choking

emaxxjeremy · December 10, 2005, 08:20:17 PM

well i am down to a 155 and its still sputtering in the upper rpm's
after the 155 i drop way down in my collection

Nightbreed · December 11, 2005, 04:11:44 AM

Did you put the HMF kit on yet?

emaxxjeremy · December 11, 2005, 11:58:29 AM

no i didnt put the nrc end cap on yet. for some reason it isnt here yet. that reminds me i need to email the guy and see where it is.
i am going to croom totay, so we'll see how it does.

trx#9 · December 11, 2005, 08:30:30 PM

Quote from: emaxxjeremy on December 10, 2005, 08:20:17 PM
well i am down to a 155 and its still sputtering in the upper rpm's
after the 155 i drop way down in my collection

Was it better with the 155 main jet if so keep going down. Try running it with the choke on if it runs better your to rich then.

emaxxjeremy · December 11, 2005, 11:34:35 PM

ya it ran way better with the 155. i could probably go a little smaller, but i think i will leave well enough alone for now. i'll have to try it all over again when i stick the hrc end cap on anyway