I agree my ignition is part of the deal, however it would run decent when just right on the richness, problem was it was always too lean except for just one temp and altitude, not being able to get needles and such in a timely manner is really not acceptable plus after q05 there aint nothing richer! also I realize tuning with egt is not a good idea either, reading the plug is the right way. that being said my egt's ran right at 1200 with the stock carb. with the smarty they would have wild swings, maybe that was just ignition related, doubt it though since the 2d map is less agressive. Anyway I'm gonna poor myself another glass of kool-aid, this time its the stock carb kind and hop in the hottub, and massage my abdomen, maybe my tipover balls will drop! I wish you guys all the luck with your smarties and a happy fun and safe winter!
Have your balls dropped (smart carb)
- Thread starter the gman
- Start date
I agree my ignition is part of the deal, however it would run decent when just right on the richness, problem was it was always too lean except for just one temp and altitude, not being able to get needles and such in a timely manner is really not acceptable plus after q05 there aint nothing richer! also I realize tuning with egt is not a good idea either, reading the plug is the right way. that being said my egt's ran right at 1200 with the stock carb. with the smarty they would have wild swings, maybe that was just ignition related, doubt it though since the 2d map is less agressive. Anyway I'm gonna poor myself another glass of kool-aid, this time its the stock carb kind and hop in the hottub, and massage my abdomen, maybe my tipover balls will drop! I wish you guys all the luck with your smarties and a happy fun and safe winter!
geez u named the thread a funny name what'd u expect? lighten up guys! I wished you good luck with your smarty and I meant it. I always try to only give useful information, by the way I've had llenty of my threads hijacked! I just think apt is a joke, they just laughed when I asked what happens when a q05 isnt rich enough and then never called me back about swapping to a 40.
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What would be helpful is you say you burnt it down then were pig rich 2000 feet higher. I don't want to be in that place as I am sure you didn't want to. If you could ,details would be helpful as I like the smart carb....maybe will get to where you are but in all fairness you took off a carb that has a tps and expected it to be good, details man details......please
I was told repeatedly that the tps did not matter, 2d mapping was not any big deal, on and on, even vids were posted about the yz250 pulling harder and better on and on... All I know is that I thought the smart carb was get it dialed then set it and forget it at all altitudes and temps. For me that was not the case. Not to mention the primer and choke and cold starts... I got it running decent but at under 5000 feet in front of my house it was so lean it was hitting 1400 egt like nothing and pinging like a game of ping pong. then at 7500 feet it was pretty good and by 9000 boggy as hell. I did not burn it down because I got lucky, I'm sure there is some piston damage, I will be doing a piston soon for peace of mind. Anyway I am not mad about it or anything I like to tinker so I really did not care, it was a fun learning experience, I was happy to go back to the stock carb and sell the smarty at a loss and call it done. I guess I should have said nothing simce I'm on a yamaha with tps and its not the same. I was just being satirical earlier cuz u titled the thread about balls dropping. Everyone I talked to in real life made jokes about smart carb kool-aid and magic carbs. All the "details" are on my yz300 thread if you read through it all. You mentioned your gas-gas last year, I almost bought one, remember? Lukily ur input saved me that mistake, thanks! u said it was kind of the same deal as my yz250 lean as hell. Summitboy got rid of his cuz it was guess what lean as hell! U also said U were contemplating going back to sleds because of all the problems, it seemed like you were getting fed up too? I really hope it works for you guys on the ktm's. In all honesty why don't you try the stock carb and see if all your misery goes away, it was a real suggestion. Anyway sorry to be funny on your all seriousness thread and good luck to you.
Cheers!
Chris Wooster
406-580-9863
I am going to have to side with DR on this one, I thought his post was hilarious! I have been very into the smart carb and have been very excited to learn about them and hear about others results. So getting the chance to spend a day on a bike with one was very exciting for me. I rode his 300 for most of the day last Saturday, I watched those EGTs pretty close. We tuned the bike the day before at 6600ft and rode up to about 9000ft. It idled good down low but I was hitting 1350 pretty easily on the EGTs so we fattened it up a bits so I would only hit 1250 if I was WFO. Then it didn't idle as well but we felt a bit safer about having a healthy piston. The farther we got up the MTN and the warmer it got the less and less it hit 1250. Even a few really long hard steep pulls around 8500ft I was just barely getting 1250. As the day went on and we headed back down the MTN I noticed a considerable gain in performance but the lower we got the more 1250s I saw, but the time I was banging some ditch back to the truck I was bouncing off 1300 again like nothing.
That is my experience with the smarty, I thought it was supposed to automatically adjust for elevation but honestly it felt like a std carb. Coming into the day I thought it was going to be awesome, by the end of the day I though meh...its ok. I haven't rode his bike with the stock carb, or even with wheels just the one day. so I just thought I would weigh in on the debate. I had an absolute blast, it was fun to get to see DR and rip the smoker as hard as I could! I still have high hopes for the smarty, I have a 500 that could probably benefit from one, I guess I am just not 100% sold, like I was before I actually rode a bike with one.
That is my experience with the smarty, I thought it was supposed to automatically adjust for elevation but honestly it felt like a std carb. Coming into the day I thought it was going to be awesome, by the end of the day I though meh...its ok. I haven't rode his bike with the stock carb, or even with wheels just the one day. so I just thought I would weigh in on the debate. I had an absolute blast, it was fun to get to see DR and rip the smoker as hard as I could! I still have high hopes for the smarty, I have a 500 that could probably benefit from one, I guess I am just not 100% sold, like I was before I actually rode a bike with one.
I would have to be drunk to go back to my sled. After my gas gas I bought my ktm and ran 40 hours on it with the stock carb because it has a heater. Now that the Avid heater is available I am running the smartie again. We are having some teething pains yes, but not the problem I had with my fi bike. Just my luck I guess. I love the 300. Next question is did you run with the green floaties, carb heat, egt's?? Not going to tell you what happened as I don't know, but if I can learn from you I am farther ahead. Thanks...Garry
just ran floaties stock, or as I received it, never played with them, maybe that was somehow part of the problem? avid carb heater and stat, I ordered mine on day 1. no flooding on startups after sitting, only flooded one time and it turned out to be a stuck needle and seat due to a pine needle. You were right about the checking for spark and catching on fire thing! Tom said "I will just stick my finger in the cap forget the plug" I said but you will get shocked!" he said "that's fine" there was juice, we dried the half gallon of oily racy klotzy mix out of the cylinder, it fired up, sprayed another half gallon out the back! and I drove it to the truck with one hand on the throttle and one on the fuel valve! if we had checked spark with the plug in it would have been a big fire! too many details I know
just ran floaties stock, or as I received it, never played with them, maybe that was somehow part of the problem? avid carb heater and stat, I ordered mine on day 1. no flooding on startups after sitting, only flooded one time and it turned out to be a stuck needle and seat due to a pine needle. You were right about the checking for spark and catching on fire thing! Tom said "I will just stick my finger in the cap forget the plug" I said but you will get shocked!" he said "that's fine" there was juice, we dried the half gallon of oily racy klotzy mix out of the cylinder, it fired up, sprayed another half gallon out the back! and I drove it to the truck with one hand on the throttle and one on the fuel valve! if we had checked spark with the plug in it would have been a big fire! too many details I know
What date was yours ordered?
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just looked at the original apt box, shipped to me august 22, you must have a different box.
lively friday night! I'm getting old!
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around 5 inches out from piston skirt. Talked to mtn-doo about a rod, and on a side note he assured me that you can never read too hot, u want the hottest reading possible. I consulted the ultimate 300 thread when placing probe to be sure, also had to move it out further after initial placement because the big old aluminim frame (stupid yammi) did not allow it to sit where I wanted it. Also when the high egt would hit it would be accompanied by pinging and lean lack of power. My friend J&L snowhawk reminded me to read plug, he said in the old days on hawks they would tune by egt and be like way fat compared to their bros who tuned by plug color. for me over 1300 egt and no power was the lean sign.
Thanks for the info. I am moving my egt probe out to 6 inches from piston edge. Have read that if you are too close your temps will be off to the high side because you are in the middle of the flame. I don't know but what are the chances you were too rich and getting pinging in the pipe from unburnt fuel?? Please keep us posted on what your piston looks like when you change it.
It is possible, but I doubt it because I have gotten to know the difference in a rich bog and lean bog. I will keep u posted. Maybe Randy will chime in because I asked him about the probe placement at least 3 times on the phone, he said impossible to read too hot. good luck to ya have fun braaapin' and tunin'.
Fuel?
So on these modded ktm 300 sx bikes are you guys running pump fuel? My experience says they need 100 octane at least once you cross the 200psi mark. I will be lowering compression slightly from where I have been but I will still run 50% 110 leaded. Buys a guy a lot of wiggle room. Especially on these finicky things.
So on these modded ktm 300 sx bikes are you guys running pump fuel? My experience says they need 100 octane at least once you cross the 200psi mark. I will be lowering compression slightly from where I have been but I will still run 50% 110 leaded. Buys a guy a lot of wiggle room. Especially on these finicky things.
100 percent agree... I mix mine up close to 100..
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Funny you say that, I ran with one guy that used to race and his was pinging to high heaven, asked what he runs for fuel and he runs 92 oxygenated
. Told him he was crazy and was told it doesn't matter, they just want your money. I run 1 gallon 110 to 4 gallons 92 non oxygenated. Cheap ins. Maybe this will shame him into running good fuel....
. Told him he was crazy and was told it doesn't matter, they just want your money. I run 1 gallon 110 to 4 gallons 92 non oxygenated. Cheap ins. Maybe this will shame him into running good fuel....running 100 here too, I was buying the 110 from the pump then I got the klotz hitrate race gas concentrate mixing that as it tells u too, mixing with 91 non ethanol.
Did the concentrate give you the same result... I find it keeps the bike from detonating but you don't get the throttle response along with the ability to run leaner?Funny you say that, I ran with one guy that used to race and his was pinging to high heaven, asked what he runs for fuel and he runs 92 oxygenated
I guess I'm not sure on that, I feel like it (hitrate mix) saved me when I was running super lean. I will try the straight leaded race and 91 50/50 and then a tank of the concentrate mix back to back and see if I can tell.