05 450r boggin!!! help!!

[Tims660rap]

ok i got an 05 450r full curtis sparks exhaust, stage 2 cam,k&n airfilter w/ outerwears, no lid,13:5:1 piston.

current jetting is 185 main 52 pilot air screw 2.5 turns out clip position 3.

ive tried that, 192 clip position 4 / 52 pilot
and 188 clip position 4 52 pilot
i have an hrc needle in it already......witht the 192 setup bike bogged at 1/2 throttle. with the 185 and 188 setup im bogging out after a good 10mins of hammer down.

5th gear pinned, biek shuts down bog bog bog pop clutch bog bog.....just dies wont restart for about 5 mins

im getting frustrated with this dont kno what to do next? any suggestions on jetting? PLEASE and any help is appreciated.

[WilRideAnything]

I had the same problem. It was the petcock. It will let enough fuel in if you are just putting a long, but if you're on it for a while it can keep up with the demand.

[Tims660rap]

so your saying the petcock cant feed the carb as fast as its burning fuel? this happens everytiem i pinn it in 5th.....and if i ride extremelly heavy on the throttle just rippin around it starts boggin...whats the solution u did?

[Tommy Warren]

check your fuel line to see if there are eny kinks or sharp bends this will screw up your flow.

[Tims660rap]

any other suggestions.....???

i was also told maybe adding a revbox would help with fuel curve........?but isnt that only in efi?

[bananas]

It's not getting gas.... How old is the gas in the tank? Start at the tank and work down... Can't run 87 must be super. I had problems running 87. Since I cleaned it all out I have been running 93 or higher and all my problems went away...

[Tims660rap]

oh ****. to be honest im running 87....local gas station onl carries 87 and i usually drive the quad straight to the pump...guess ill start running 93 u guys think this could be why?gas aint old, i run about 2 tanks a week through it

[bowhuntinrider]

I'd say that's what it is, I have a 400ex that's pretty much stock but it has a pipe and jets and it says in the manual to not run anything lower than 93 in it, I'd say with that 13.5:1 piston you should run atleast 93 if not higher.

[Tims660rap]

Ight ill start running 93 and ill clean the fuel petcock out to make sure gas is getting their.....thanks guys

[Tims660rap]

ok i emptied all 87octane gas from tank/carb/ect and ran the bike.....ran better but still bogging out fully pinned and breaking up......every once ina while ill get a pop or 2 backfire....i notied when the fuel petcock is "on" it flows less than if the arrow is between on and off. one of 2 fuel petcock bolts is stripped along with my 2 bolts for plastics. some1 mentioned its my petcock maybe it definately is....? could jetting kill my bike pinned? im lost at thsi point just about ready to go to a dam shop and get raped.

[dads400ex]

Check your cap vent tube and cap to make sure it is not plugged or kinked. Wide open running, if it is plugged it will not get the air flow through the tank to keep your fuel flowing.

[Tims660rap]

it got ripped off...running no tube atm

[Tims660rap]

unless theirs dirt in the actual cap itself where the hose would go, ill have to check that out

[dads400ex]

see if you can blow thru the cap from the hose side

[wckedclownz69]

jetting usually makes we wanna role it off a cliff... hows tht hotcam with the piston.. thts the same upgrade i wanna go with...and i had mine setup the same way but with 180 ran fine.. then it kept messing up a year later and messed with it and figured out it was my valves.... have you adjusted them latley ?

[Tims660rap]

the setups great, bike moves good it ran fine but now aint runnin so great...and i need to check the valve ajustment actually could this be why its running so bad

[exrider12]

Your running 93 octane on a 13.5 piston?:huh

You need atleast 100 ocatane on that piston. And you better start soon before your motor blows from pre detenation.:ermm:

[Tims660rap]

ive read from quite a few forums 91 octane will doit for a 13:5:1 so 93 is definately safe....idk where your coming from

[d3ktrix]

Originally posted by Tims660rap
5th gear pinned, biek shuts down bog bog bog pop clutch bog bog.....just dies wont restart for about 5 mins


Overheating from lack of proper fuel.

87oc with a 13.5:1 and a HC2?
Pull the spark plug out of see how much metal is stuck to it :P

[Tims660rap]

bikes got fresh 93 in it all 87 drained and its still doing it, plugs brand new with the 93.

[d3ktrix]

Originally posted by Tims660rap
bikes got fresh 93 in it all 87 drained and its still doing it, plugs brand new with the 93.

93 is still not enough, u need ~100 octane for that setup.

[Tims660rap]

so if i start running 100 octane you guys think bikes going to run like its suppose to...?

[exrider12]

It will run like a raped ape after! And 93 octane is sufficient at 12:1.

And your from MA? Wheres Freetown. Im in sterling, just outside worcester.

[d3ktrix]

Originally posted by Tims660rap
so if i start running 100 octane you guys think bikes going to run like its suppose to...?

I'd say so, but I'm not an expert. You might also have some other problems. But should go with a better fuel either way.

The reason I said check the plug for metal deposits is it's the easiest way to check for detonation.
The low octane fuel can't handle the high compression and causes ignition outside of the flame front created by the spark plug. Raising pressure and heat enough to cause serious damage.
If you are getting detonation you might even see pitting in the chamber and on the top of the piston. The loose metal can stick to the plug or end up in ur oil filter.

I had a friend that ran 13:1 on 93oc and had a build up of metal in his chamber that blew out the side of the cylinder.
There was metal eaten away from the head all around the spark plug.
Destroyed his head/cylinder/piston.

[Tims660rap]

Originally posted by exrider12
It will run like a raped ape after! And 93 octane is sufficient at 12:1.

And your from MA? Wheres Freetown. Im in sterling, just outside worcester.

its exit 9 on rt 24.....40ish mins from worcester theirs a few pits down here

[Tims660rap]

well i ran 87 octane and 93 octane threw this bike....i was told 93 would doit for a 13:5:1 so i was like ehh ok...closest gas station started only carrying 87 and i drive quad to the pump so i started getting lazy. quad boggs less on 93 than 87 so 100+ shud make it smooth. i just talked to the kid that sold me it he said he ran 125 or 111 threw the bike as much as possibile

[exrider12]

Oh nice man. You ever go to capeway rovers? I wanna head down there. And ya.. run as high as you can. Or buy some kemco. Its an additive that can raise the octane of your gas by 16 points.

[Tims660rap]

well idk where to buy race gas in massachusetts if i buy that kemco and run with 93 ill run....109 octane?or??

[Tims660rap]

ok well today i drained out the 93 put 108 octane in it....fired it up rode around breakin up bad i thought it would clear out never did. bike use to stall 3?4 throttle to pinned now it breaks up up until 3/4 throttle.runs decent pinned. im lost at this point..i got car out going to clean it because slide was moving difficult at one point today but idk anymore lol