| Author | Message | ||
     Englishman |
Wow, that's a new one on me, Brown for lean and blue for rich?  Just wondering how the chrome knows which colour to turn. Seems to me that rich condition would make the engine burn cool, and not affect the chrome at all. Harley's® in general seem to run richer with a less restrictive exhaust, seems odd, but there you go. | ||
| Hoss |
thanks everybody.. i'll give the 170 jet a try in the morning. i followed the instructions about the airmix screw. unfortunatly the kit i purchased (from a guy on ebay) who said that the dynojet kit was new gave me a stock needle and not the adjustable one that was suppost to come with the kit. on top of that.. the freakin' goldish screw on the top of the carb that also holds the throttle cable bracket got really stripped and i can't get it off... which is why i didn't get to drill the hole in the slide. so i guess i'll do the 170 jet for now until i can figure out what to do with the stripped screw. thanks. | ||
| Dann |
Ezblast, I think I know where you are headed with this one. I am wondering if the high tech valvetrain of the Firebolt will work in the stock Blast! head. So far I have not gotten a definate answer on this. On the other hand if you were somehow able to come across a cheap head from a wrecked Firebolt, hmmm that would be interesting. I'll let you know if I can find anything out. | ||
| Aaron |
RD, any chance you're reading instructions for a Mikuni and attempting to apply them to a CV? I think you'll find the the CV is more rpm sensitive than throttle position sensitive. Your instructions are correct for a flat slide, though. | ||
| Aaron |
The XB head will fit, but keep in mind that it's got dual flat squish bands and a bathtub chamber. In other words, it won't work with the Blast's Thunderstorm piston. Also, you may have to fabricate something for that heim link. With respect to using XB components in the Blast head, the XB valves are different stem diameter, you'd need new guides. The valve heads are probably different diameter as well, not certain on that, so you're looking at changing seats and all that entails. You gotta understand, what they tried to do with the XB valvetrain is lighten things enough, on the valve side of the rocker where it matters most, that they could extend the rpm range without adding a bunch of spring pressure. It's simpler to just slap in some heavy long travel springs. | ||
| Dann |
"lighten things enough, on the valve side of the rocker where it matters most," that they could extend the rpm range without adding a bunch of spring pressure. It's simpler to just slap in some heavy long travel springs. But this would also add stress to the rest of the valvetrain limiting rpm and soak up horsepower. | ||
| Rd350 |
Sorry for the misunderstanding. I was talking flat slide carbs. Just trying to give him a general idea of how to check without going to the dyno and spending $100.00. Dann what Aaron it trying to say is that it will cost way to much money to fix the blast to get what you want. I have looked into the head design for months and figured out it just costs to much money. You can get almost the same hp from just going to heaver springs and a little machining. You can retro fit the firebolt head and have Nallins make you a piston. But you still have to change the ignition and the cams to take advantage of the HP at upper RPMs that is what the head was design to do and retro fit a link to hold the head. So $500.00 for cams and ignition. The firebolt head is around $500.00. Might as well put in a big bore kit, $500.00 Another $130.00 in gaskets and dyno run. Your time if you can work on it. Now you have a bike that has a good engine but poor handling. So now you need to change the fork springs and get a new shock. Another $800.00. You can keep going and going. I would recommend just have the head reworked through Nallins and call it good for $550.00. You will get around 10 hp out of the work they do. To let you know Buell is working on a Super Blast. I would wait until July and see if they had time to put it into production. Save your money and get a bike that already has all the work done. | ||
| Pgandeguy |
Hey, Looking for blast ideas, thought I would share a pic of my Blast if I can figure this out... Peter  | ||
| Fssnoc2501 |
To all my fellow BLASTARDS; YOu may have seen a post from Aaron in the Bonneville section about a Blast sidecar attempt this year. Well that conversation was with me about my dad and I considering SERIOUSLY making an attempt with Team Elves this year. There is considerable work already in progress both on my bike and in building the sidecar. I hope to make a serious enough attempt to make all of us BLASTARDS proud.   I would like some assistance from you all. 1. If anyone knows of a tach that will work on the Blast please let me know. 2. Any ideas related to handling or performance would also be appreciated ( I'm already talking to Aaron) Thanks; RayText | ||
| Hoss |
uggg..ok well i installed the 170 jet and it didn't help.. im still having the serious accelleration issues. maybe the spring isn't set in right? does anybody have any suggestions on how to get out the stripped screw on the top of the carb without damaging it? is there anything else that could be causing the accelleration issues? thanks again everybody. just trying to get this thing running right so i can ride it to work again. | ||
| Pgandeguy |
Hey, If you can hold on a week, I have the answer for you. I bought the dynojet kit for my blast, so I'll be able to share the info, hold on a few days. PM or email me if I forget. Peter | ||
| Rd350 |
Hoss, for the screws on top of the carb. Call around to some automotive places that sells parts. They had a special drill bit that will pull the screws out. I forgot what it is called but they do make it. Or you can take some visagrips that are needle tips and put some grip on them. You will have to take the carb of the bike to use the visagrips. I had the same problem one time and got away with the visagrips. Buy new screws for the carb. You should order those today since your local shop will not have these in stock. Also call Dynojet and tell them what carb you have and what should come in the kit they sell. Does the kit have a new Vacuum piston spring, jet needle, spring seat,needle jet holder, jets? I think you are missing something else besides the jet needle... | ||
| Fssnoc2501 |
Hoss, Take a good sharp hacksaw blade and carefully saw a slot into the head of the screw. You should then be able to use a blade type screwdriver to remove the screw. Ray | ||
| Hootowl |
Sears sells a screw extractor that works wonders. I'm sure you've seen Bob Vila whoring himself out on the TV commercial. | ||
| Rd350 |
Ordered the spring kit today for the front end from Works Performance. I will let everyone know how things turn out and if it is worth the money. | ||
| Xgecko |
I eagerly await your opinion Philip  | ||
| Dantheman |
I got 2 words for your stripped screw= acetelyne torch | ||
| Dann |
While you are at Sears buy some robogrips. NOT! | ||
| Pgandeguy |
Hey Hoss, The hacksaw idea is the right idea. But.... that screw is so small that the kerf of the blade will cut too wide of a slot. Use a rotary tool (Dremel Foredom...) with a thin cutoff blade...this method will produce sparks, so don't make your bike into a $10G candle. A penetrating oil will also work wonders. The best stuff is called Break Free. You can find it at a gun shop If you call around and cant find break free use Tri Flow. | ||
| Pgandeguy |
No jet kit yet, maybe Thursday night.... | ||
| Roadweazel |
I have a Force pipe to fit a Blast that I would like to sell. It's good for HP (I've seen over 33HP with the pipe, jet kit, and intake) and very loud. I has had a crack right at the part that holds the front mount to the bottom of the engine. It has been repaired by a Master Welder (read that to mean, someone who knows what the hell he is doing, and not me with a coat hanger and a battery charger). I'd like to get $90 for it, shipping included to the contiguous 48. It's not the most beautiful pipe in the land, but it is cheap and loud, with good power e-mail me direct at glockweazel@yahoo.com if you're interested. Thanx. Colin | ||
| Dust_Storm |
Weazle check your mail! [Ds] - takes power over beauty anyday ('cept wit SOME things...) | ||
| Hoss |
Ok I've got the stripped screw out and the carb air leak fixed and the jet kit installed (with the 170 main jet). It fired up and I have all the acceleration back that I had lost and everything sounds and feels great. I took it on the freeway this morning on the way to work and got up to about 75mph... everything seemed ok. i wasnt getting the total power failure and the feeling that the carb was starving for gas anymore. although.. i did still get some of the same symptoms if i was at these high rpms and i let off the gas slightly. it would pop and loose a little power until i gave it more gas. what is left that could be causing this? it isn't nearly as drastic since i tightened up the exhaust and intalled the jet kit. anybody have any suggestions? how would i bypass this charcoal cannister thing altogether? could that be part of the issue? | ||
| Rd350 |
Hoss, Did you change the jet needle out? Did you have to change the vacuum piston spring out? Are the band clamps on the boots on tight on the carb and air intake manifold? Are you running the stock airbox? What is the elevation that you run the bike at? What does the dyno kit suppose to have in it? If you are not sure you need to CALL dyno jet and ask them. When you find out tell us. Then we can trouble shoot it for you. And yes you can lose the charcoal canister. It is not very hard. | ||
| Hoss |
Stock needle cause I got jipped on my Dynojet kit and Dynojet won't sell me individual parts. What is missing from my kit is just the adjustable needle. Changed the vacuum piston spring out. Tightened the band clamps as tight as I can get them. Stock airbox with stock filter. Elevation is I guess not very high. I'm in San Jose, California (in the Bay Area)... I'm gonna look at my service manual right now to see about getting rid of the charcoal canister. I'm getting pretty frustrated with this loss of everything at high rpms. I don't know what else to do. - hoss | ||
| Hoss |
Ok I just unhooked my charcoal canister completely. i routed everything according to the service manual for a non-california bike. i took it on about a 4 or 5 mile ride.. going about 80-85mph for a small stretch with no loss of power. i'll really be able to tell tomorrow morning on the way to work. when unhooking the hose that connects the pcv valve to the charcoal canister, i noticed a really gross looking, yellowish residue inside the hose and inside the cannister. has anybody else seen this? what the hell is that? | ||
| Ezblast |
Hoss - very little oil, a little gas, and a bunch of water. That canister has been a hassle for anybody who rides in the early morn. commute(it fills up w/moisture causing various problems - however it is a free replacement- EPA isue)Blasting away on the dark side here in SF! | ||
| Pgandeguy |
You might want to try throwing your stock spring back in, and see what that does. I'm betting that would help, since you are running a weird combo of the stock needle, and the dynojet spring, which is lighter. Did you drill out the slide? I dont't know if that would be kosher to do without the dynojet needle. Peter | ||
| Rd350 |
Hoss, Call the dealer tomorrow and ask them for the H-D Mikuni Carb Tuner Kit. I believe they still make it.(sorry don't have the part number) It should be about $28.00. This kit is the poor man's fix to the Dyno kit. It will have everything you need in it. The bike will not run perfect until you change out the jet needle. The problem with using the stock one is that it is setting the jet needle to low. It is close to the number two from the bottom of the dyno jet needle. (Note: Dyno jet should have 6 settings on the jet needle) This will make the bike feel like it is running lean. Also if you change the vacuum piston spring back to stock it will give you slight improvement on the low end. It is a stiffer spring. This will not help you. Last does the Dyno kit ask you to drill out a plugged casting so you can adjust the fuel mixture screw? | ||
| Rd350 |
Hoss, also found that Keihin has a carb kit for HD. The part number is 32-81-11-16541. I am not sure if the whole kit will work on the carb for the blast but since the stock carb is 40 mm Keihin this kit has two different needles in the kit. One for carb with acculator pump and one without. You should be able to use one of the needles from this kit. The kit is $29.99 from HD. Hope this helps.. |
