thought i was finished...carb trouble!!

dahondaboy · Post by **dahondaboy** » June 16th, 2008, 8:42 pm

ok, I ran it to do the heat, coo,l heat, cool, break in procedure. And it was really rich. I leaned it out got it to have good mid and top but it dies off bottom when letting out the clutch. could the pilot need changed too? I didnt think it would be that different after porting and a bore..it was just a mild port job, mostly just de burring and cleaning casting marks nothing radical at all. so my question is: would mild porting and being bored to 2mm over require that much on bottom that i need to re jet the pilot? thanks guys! 2 days to widowmaker!

iggys-amsoil · Post by **iggys-amsoil** » June 16th, 2008, 10:57 pm

First I'd make sure the pilot jet isn't plugged up.

Mild porting? That can be a wide range.

PJ carb.
As an example mine suppose to be mild and most likely is, however I'm two sizes larger on the pilot and really needs the third, from a 55 to 62. The 62 is definately going in for Pismo. Then there is the needle from a CGJ to a EEH, but the main is only one or two depending on if it started at a 168 or 170, currently at 172.

dahondaboy · Post by **dahondaboy** » June 16th, 2008, 11:59 pm

whats the elevation at pismo? im at 5800-6100

Post by **AlisoBob** » June 17th, 2008, 12:03 am

dahondaboy wrote:whats the elevation at pismo?

Is this a trick question?

" Hey, who's burried in Grant's Tomb?"

dahondaboy · Post by **dahondaboy** » June 17th, 2008, 6:40 am

hey, i live in landlocked utah man, i dont know what a pismo is...
is it like a chevy vega?

Post by **AlisoBob** » June 17th, 2008, 6:51 am

dahondaboy wrote:hey, i live in landlocked utah man,

Guess the elevation @ Pismo BEACH.

dahondaboy · Post by **dahondaboy** » June 17th, 2008, 6:58 am

yeah i put that together after my first reply....dee de deee

i couldnt get mine to run right till i put a 160 in it. and ittl go to 158 up at widowmaker. dosent that sound lean to you? but as it sets with the 160 the plug looks perfect.

iggys-amsoil · Post by **iggys-amsoil** » June 17th, 2008, 6:29 pm

How is a 160 main going to affect the idle/pilot circuit?

dahondaboy · Post by **dahondaboy** » June 17th, 2008, 10:14 pm

it isnt. im not stupid.........it was out of whack all around, it had no top end at all until changing the main. now it will not idle and dies when letting out the clucth unless at half throttle. and the top still isnt right it is sputtering and blubbering, all that seems to work right is the mid range.. and yes i mad sure the pilot wasnt plugged. it was at 168 main and wouldnt even hardly run untill i went to 160.

iggys-amsoil · Post by **iggys-amsoil** » June 17th, 2008, 11:09 pm

You'll get it. It just takes some time and testing.

Post by **AlisoBob** » June 18th, 2008, 6:28 am

iggys-amsoil wrote:You'll get it. It just takes some time and testing.

EVERY thime I see someone having to resort to "Odd Ball" jetting to make the bike run, something was major SNAFU somewhere else...

You sure you have the piston facing the right way?

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 6:51 am

i dont know man,i have no starting poin as it is all out of whack... i am really frustrated i leave for a climb tomorrow and i might have to leave the bike home if it aint gonna run. i could puke i soaked over 600 into it over the winter and now it runs worse than when i tore it apart.

it was running pretty good, now after a bore and piston it will not hardly run. before the bore it had a 168 main, 58 pilot, 1-3/4 turns out, 3rd clip
tried it with those and it only has mid range power (kind of) went to 164 and it was a little better, went 162 and slight improvement. dropped the needle but didnt notice a difference. when i hold the throttle open(full)
it misses blubbers and stalls. and it wont idle even with the adjuster all the way out. i just dont get it, my xr600 went from 598cc to 604 ish with heavy porting and it ran on the same carb. i think the machinist fu**ed up on the bore or something, i couldnt afford to go to glen and now im paying out the ass for it!

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 6:57 am

AlisoBob wrote:
iggys-amsoil wrote:You'll get it. It just takes some time and testing.
EVERY thime I see someone having to resort to "Odd Ball" jetting to make the bike run, something was major SNAFU somewhere else...

You sure you have the piston facing the right way?

yes arrow to exhaust, all the good stuff, no crankcase pressure loss. although it does have far less compression than i would expect out of a new top end, at 125 it seems pretty low. the machinist told me it would gain more as it braks in and seals the rings to the wall but i think he is blowing smoke up my ass. i am tring to find a new jug but im on a time limit, i am even tring to borrow my buddys top end just for the race but he says no-go....

Post by **AlisoBob** » June 18th, 2008, 7:22 am

dahondaboy wrote:....at 125 it seems pretty low. the machinist told me it would gain more as it breaks in and seals the rings to the wall but i think he is blowing smoke up my ass.

Yup.

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 7:55 am

well i just went out and tinkered with it and its seems worse than last nite, i put the gauge on it and it says 65 lbs. !!!!!! i must have some stuck rings or something bad. well i guess this bike aint gonna go to the hill tomorrow. it was on its last bore anyway so here goes the bidding wars for a newish jug. or maybye a sleeve, how much does labor run on a new sleeve, and do sleeves come ready to hone or do they need a bore first? i have never resleeved anything so any input is aprecciated.

anyone got a top end they can overnite to me?

lol

Exnav · Post by **Exnav** » June 18th, 2008, 8:00 am

Buy yourself some piece of mind and call GSS.

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 8:02 am

Exnav wrote:Buy yourself some piece of mind and call GSS.

hindsight is always 20/20

Post by **AlisoBob** » June 18th, 2008, 8:25 am

AlisoBob wrote: EVERY thime I see someone having to resort to "Odd Ball" jetting to make the bike run, something was major SNAFU somewhere else...

You sure you have the piston facing the right way?

dahondaboy wrote:well i just went out and tinkered with it and its seems worse than last nite, i put the gauge on it and it says 65 lbs. !!!!!!

There ya' go....

Sorry to hear of your issues.... next time keep us better informed WHILE your doing it...

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 8:29 am

well next time is now, so stay tuned.

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 9:56 am

does anyone know what the average cost of having a cyl. resleeved is?
and once it is resleeved can i just hone it and throw in a stock size piston or does it need to be bored to size first?

Post by **AlisoBob** » June 18th, 2008, 10:20 am

01 CYLINDER
12100-ML3-680 001 $337.61

Brand new is the way to go, unless you have allot of $$ tied up in porting...

dannygraves · Post by **dannygraves** » June 18th, 2008, 10:33 am

there are jugs on fleabay all day long for like $100 on the first or second bore.
to resleave is $100 for the sleave and $100 for the machine work...

dahondaboy · Post by **dahondaboy** » June 18th, 2008, 11:03 am

yeah, i saw those jugs thats why i was leaning that direction. 337. for a new jug sounds like sleeving is cheaper. if i can get it done for around 200.00 is that what glen charges or was that someone else, cause after this fiasco i dont wanna trust it to anyone else.

Post by **AlisoBob** » June 18th, 2008, 11:09 am

dahondaboy wrote:... sounds like sleeving is cheaper.

Isnt this train of thought what got you in this position?

Mad Dog · Post by **Mad Dog** » June 18th, 2008, 11:12 am

dahondaboy wrote:well i just went out and tinkered with it and its seems worse than last nite, i put the gauge on it and it says 65 lbs. !!!!!! i must have some stuck rings or something bad.

I wouldn't give up on it yet. I've had faulty readings before.
Trying to get a 500 to spin fast enough for a good read is tough.

I would tackle it again another day without any pressure.

Other things to check for.
1. Consistant premix ratio.
2. Reeds, reeds, reeds
3. Lower end vacuum leak.
4. With your air mix screw all the way out you are too rich on the pilot.
5. What needle are you running?

BannedCR500Riders.com

thought i was finished...carb trouble!!

thought i was finished...carb trouble!!