| Author | Message | ||
     Ezblast |
Thank you James - my point exactly! Just Blasting on the Dark side! EZ | ||
| Racerx1 |
jprovo, There is a plugged port on domestic Blasts that is the purge port for the evaporative emission canister. Its the smaller one of the two and leads to a port in the carb throat. should have a blue plug on it. If you blow into it you'll hear the air escape in the carb throat. The bowl is vented internally through a 3.5mm orifice into the airbox (its the hole that doesn't have a screw in it through the venturi ring). EZ....no problem dude. We'll leave it to those dim wits at the factory to try and get it right  | ||
| Ezblast |
Racerx1 - no arguement here. I'm sure the factory has its reasons, I'm just a humble Blast fanatic - pooring over data and asking questions, everywhere - I'm sure the EZ initials have been seen on every Buell group that has ever even mentioned the Blast, Lol - and their probably sick of me asking so many wierd questions? I only bother these guys - BW - with the most relevant stuff (otherwise your just whistling in the wind),0) - Just Blasting on the Dark side! EZ | ||
| Jprovo |
Racer X1 Thanks, that's the info that I needed. Now when I ditch my charcoal cannister, I know that I can plug that port. Thank you, James | ||
| Joey |
I'm looking at 1 3/4 pipe with a cherry bomb on it. That means an open pipe with a swollen thing on it that has little tiny holes that catch some of the sound, but not much. My wife wants it to stay quiet, perhaps close to the stock exhaust.   I'll be opening up the airbox, too, so I suppose I should do a 180 rather than a 175. I'm going by all the stuff I've read on this board, by the way. I know the cause of my intermittent power loss--not enough fuel for the air. | ||
| Blake |
No, not likely. The main jet is usually a bit rich stock. I only run a 190 main on my 100 RWHP Cyclone and it runs slightly rich. I don't think you will need anything more than a 175. You may well find a smaller main jet is in order for optimum power output. The slow jet (pilot jet) however is another story. That is where you will find a significant leaness. Try increasing it one size and resetting the idle mixture. Check the general Carburetion page in the Knowledge Vault. The top of the page gives general recommendations for carb jetting/tuning. Good luck. | ||
| Ezblast |
Boy I'd love to hear that puppy some time!0)Got Thump?! Just Blasting on the Dark side! EZ | ||
| Ezblast |
That would be 45/175 combo, 45/180 was what I was running, and with the Direct Hits I suspect it could have still been too lean( holed the darn piston when the intake boot cracked). Let your seat of pants dyno tell ya. Start with the 45/175 combo. and after you have a feel for it try the 180 main. If you want to blow $50.00 a dyno shot - you'll need two - you could - as I did - find out quickly. The former way is just as good though - just takes longer. Just Blasting on the Dark side! EZ | ||
| Jprovo |
When I changed out my stock airbox this past Sunday, I took a look at my intake boot. The intake boot had some minor cracking on the ID (probably not helped by the MTBE). My bike only has 5500 miles, so this is a bit shocking. Then again, I did have a low speed tip over that bumped the airbox real hard (that's the main reason for the change-out). I suggest that if you have your carb off for any reason, inspect your intake boot, and replace them if they show signs of damage. James | ||
| Joey |
I have a down-draft variable-venturi carburetor that doesn't have jets, a choke, or anything strange like that. It has a throttle plate with holes in the shaft. It has a metering groove inside the bowl. While it does fine on my motorhome, bringing total gas mileage up about 40%, with only a slight increase in power, I'm wondering how I can put it on the Blast! without a cutting torch. I'm also wondering if the Blast! engine is going to provide the necessary vacuum for the 1 7/8" diameter (appropriate for a Dodge 360, works on a 318 well enough) carburetor for it to properly regulate the fuel/air mixture. This carburetor runs at about a 18:1 air/fuel ratio. Richer than that, and my spark plugs turn black. How does the length of the tube between the carb and the head affect things? Who has answers for someone who doesn't ask normal questions? | ||
| Ezblast |
jOEY - POST THIS QUESTION - oops sorry for shouting - in the carb section of the of the knowledge vault for an answer here at BAD WEB, also try the yahoo group - Buell tech., there are other places as well if these bring no results - let me know. Just Blasting on the Dark side! EZ | ||
| Jprovo |
Swapping Carbs: How much work is required on the electrical end of things to swap carbs? I'm not worried about the auto-choke, I'm thinking rigging the TPS because it talks to the ignition. Aaron, whas this an issue with the HSR42 carb, or is you ignition so modified that it doesn't matter? James | ||
| Sarodude |
James- There are a few options. You can go with an ignition that supports the VOES switch and hook up a VOES to your carb. You could probably also make a circuit that causes a VOES switch to supply the right voltage at a given vacuum to the stock ignition OR one that supplies the right voltage to a VOES type ignition from the stock TP sensor. Both of those options are probably more headache than they're worth unless you happen to have a friendly neighborhood EE reading this thread... My personal choice would be to use the style of ignition that uses a MAP sensor 'cause I don't care to feel that transition from the economy curve to the WOT curve. I assume you're concerned 'cause you're dealing with a street / commuter bike and things like mileage do matter - correct? -Saro | ||
| Jprovo |
Saro- you are correct sir! James | ||
| Jprovo |
What's the scoop on the Blast intake that I saw in the dealer brochure for the new exhaust and cams? James | ||
| Jimalexander |
I just installed a 45 slow jet and backed out the air screw and when I went for a test ride everything was running great with a noticeable increase in power. Then gas started pouring out of my carb and filling my airbox. I pulled of the airbox cover and when I look into the carb at the slide, there are 2 holes drilled into the carb body just outside the slide. The gas is pouring out of the hole on the right which seems to lead to the slide needle right above the float valve. If anyone can suggest a way I can fix this without taking it to the shop I would appreciate it. I can turn a wrench ok but am ignorant of carbs and the principles that make them work. I also would like to put a Forcewinder style air filter setup on the Blast. I see from the pictures of a lot of bikes on the Yahoo Blast site that it can be done custom which is out of my capacity. Will a Forcewinder work on a Blast? I'd be interested in seeing the new Blast intake if this is similar. I misposted this previously in the knowledge vault section. Jim. | ||
| Blake |
Jim, I'd take the float bowl back apart and look at your service manual. Sounds like a stuck float or something similar. Obvious thing is that upon reassembly something was not positioned quite properly. | ||
| Shotgun |
Jim, Blake is right on target. Probably float is maladjusted. Check it out per the manual. It is easy to get it out of whack, but easy to readjust. Just bend your tang in small increments til it's right. | ||
| Anonymous |
Thanks guys, now I know what to look for. Jim. | ||
| Southernmarine |
I'm new, just got my Blast in January and, well if you read my profile you can find out what happened. My Blast is still stock, no changes yet, gonna wait. The problem I'm having is I still have trouble starting my bike once in a while. As long as it's under warranty I'll let them deal with it, but they haven't got this just right yet. Yeah I'm not a mechanic, but I learn. I don't know what they did to the jet's but It's acting like it's getting to much fuel and floods at times when I try starting it. Anyone have this problem? The bike is a brand new 2002, just went over 400 miles. | ||
| Court |
Robert: At east there... Welcome aboard, you'll find the G-3 here without equal anywhere on the net. One word....Ohhhhhhhhh....RAH ! Court USMC (MCRD/SD 1974) | ||
| Ezblast |
You've seen my intake set up on the main blast board - my problem is she keeps spiting out gas - First Ithought it was a float issue, then the carb not being straight - now I don't know - again a tweeked float - what else causes this - as usual back to the drawing board. I ordered an extra intake head part to match it to the diff. hoses I'm looking at to replace the stock rubber piece. Just Blasting on the Dark side! EZ | ||
| Mx114g |
I just got around to putting the jets in my stock carb after putting on a White Bros pipe and K&N air filter(with the airbox mods recommended by Ed). My question is regarding the main jet. The DynoJet Blast kit says to replace the main jet and emulsion tube with the a 155 main jet and their emulsion tube. Does a 155 main jet sound right for an aftermarket pipe&airfilter? I thought I read in previous posts that folks were using 175 for the main jet. The bike starts fine and seemed to run fine around the block (still too damn cold and snowy in the North East). I just don't want my poor Blast to blow up on me. What do you guys think? -chuck | ||
| Ezblast |
Chuck - if you do a dynojet kit - been reading up on these - follow their instructions using their jets and tube and you'll be fine - their numbering sequence on their jets is different than the stock cv-40 jet numbering sequence - to protect patent rights - but that jet size should be almost equivalent to the stock number 175 main. You have to use their tube with their jet for it to fit correctly anyway. One warning - with the dynojet kit your gas mialage will go down a bit due to the tube design - been reading;0) - I skiped the kit and just went and bought jets 45/175 and shimmed the needle .001" per the advise in the kv carb section - and saved myself about a $100.00 - they are a little less now. Got Thump?! Just Blasting on the Dark side! EZ | ||
| Mx114g |
OK, that makes more sense. I went ahead and put all the Dynojet stuff in there since I had the whole thing apart over the weekend, but I wanted some reassurance before running it much. Thanks Ed, I feel a lot better now! I will sacrifice a little gas mileage for more Thump :-) I'm semi competent, but drilling a hole bigger in the carb had me a little nervous. Drilling out the plug had me sweating a little too. All in all it worked out pretty well. I don't think I screwed it up now that you explained the numbering difference. The airbox mod you suggested was easy to do and while I was at it I removed the crankcase breather from the airbox too. -chuck | ||
| Ezblast |
I would still sugest doing your secondary to 45 (44 - yup they make it - if your altitude is over 3500 regularly), your dynojet needle needs no work. Bet you love the Thumping echo from the box! Kind of miss it myself ;0)- lol - sounds like serious thump going down here! Got Thump?! Just Blasting on the Dark side! EZ | ||
| Sarodude |
EZ- Can you describe your "spitting out gas" issue? Throttle position? Revs? Observed gas spittage? -Saro | ||
| Ezblast |
Sure - this time I had trashed the float by readjusting it too much - I'm always too darn hard on things - It all happened while I was trying to dial in the stack - jetting wise, etc. - so I cheated and had them (DP)do a carb rebuild - saving the mod.s of course - and now I sit smilling - lifes pretty good with everything rebuilt and new - when those darn clamps come in - damn slow boat from China - I'll replace the rubber intake boot and hopefully have a (knock on wood)bullet proof Blast! Got Thump?! Just Blasting on the Dark side! EZ | ||
| Ezblast |
Force intake - you want your Force intake to have the large venting area - so you whip out mr. dremel and carefully grind it out to look like the intake on the left -  You'll need two - maybe 3 braces (the Force intake is not a lite unit) - maybe if you went with the euro cf copy - 2 braces - to suport the carb. Will post pic.s of different styles of bracing a bit later tonite. Got Thump?! Just Blasting on the Dark side! EZ | ||
| Droobies |
Ok, working on comprehension... data transferring... transfer interrupted! =P Thanks for the pics and potential follow up EZ, but I've still got a few questions: 1) Does the Forcewinder bolt right up to the Blast carb with no modification, or will you need to fab up some sort of adaptor? This is, of course, regarding the mounting flange and not the possible braces. 2) Will the 45/175 rejetting that was done with the exhaust still be enough with the increased flow that the Forcewinder will (potentially) give? 3) Does the Force intake accommodate all the hoses/thingamajigs (technical term) that are present inside the stock airbox? Please excuse my extreme lack of knowledge regarding motorcycle tech. I love my Blast, but I'll most likely be upgrading to things everyone else has done simply because of my inexperience. Maybe once I get my tech manual in I'll spend a weekend x-referencing real parts with pictures. =) |
