If you want a clue about what works you should check out some vintage races, these bikes get it done ,makes you look at the candy store caffe' racers in a whole different(laughable) light. seems to me a lot of the guys that run these things competitively use the long biggo K&N filters, personally, I think these look hideous on a streetbike, but competition is not about looks. Honestly, I gotta believe if this is gonna be a fairweather rider for the bike nights and not serious road riiding, they will probably look the biz and your top end will last a lifetime. Was: Shorty Velocity Stacks will increase performance and look of your classic motorcycle with Mikuni VM30, 32 & 34 carbs. It's your bike, your choice, but the general idea is they look cool, might give a bit of performance, generally regarded as useless on a streetbike. does any part of riding a 40 year old dinosaur in modern traffic make any sense? are you really planning to use the bike in a performance oriented manner? Who you gonna race?ĭo they make any sense?. After a mile or two of looking down and listening I was able to go back to the exact spot and find the (run-over) stack !ĭo they improve performance? theoretically. I did have one fall off one day and the drop in performance was very noticeable. If you use the AMAL stacks, make sure you epoxy on as well and be warned that the small grub screws will crush the mazak threaded section of the carb body meaning it might be difficult to change back. They sound good and look great so don't let me talk you out of trying it. Main jets went up quite a bit (270s I think) and a change of slide. I did find that they gave a crisper pick-up and more urge at the top-end. The biggest problem was rain running down the back of the fuel tank when parked and dripping into the inlets. The bike did have a cartridge oil filter and it was used on-road in the south-east of England so not the dustiest place. Our YouTube channel is TJBRUTALCUSTOMS.I put about 30,000 miles on an 850 Commando with velocity stacks and it was more or less ready for a re-bore after that although it wasn't causing problems. There's lots of good info on how to tune on our Support Page and YouTube videos explain the process pretty well. These are not a PLUG-N-PLAY item! You will have to tune your bike once you install these stacks. WITH PROPER TUNING, THESE WILL NOT HARM YOUR BIKE, NOR WILL THEY ALLOW ANYTHING HARMFUL INTO YOUR MOTOR! We recommend using a locking agent such as loc-tite to secure the set screws. To install, put the screen on the carb, then slip the stack on and tighten the set screws. Do not add any other filtration to the v-stacks! Each stack is attached with 3 small sizes #6-32 set screws. These don't even let sand through! The stacks function in all weather. Good quality product: The velocity dle is made. Please note: These will not fit the VT700 VT750's before 1998 or the VT800.Įach stack comes with a metal mesh filter screen to keep out birds, cigarette butts, and small children. Professional: The velocity carb is a professional engineered tool that can be used for all types of vehicles. The kits you find online will not work with these! You can find the TJ Brutal performance jet kits HERE. Filter Options Optional 1 Simple Screen filter fits inside as seen To The right Part PJM-SF 21.95ea Option 2 2 Simple screen filters with 1/4' Foam between Part PJM-SF2 41. Velocity stacks have been around for decades, although they reached their zenith. You will need to purchase the TJ Brutal performance tuning kit with your stacks to achieve the desired results. Velocity Stack For Edelbrock - Holley or any 5 1/8' ID Base Carburetor 6' Tall Velocity Stack Part PJM-VS9 Price 119.95ea. In motocross, the velocity stack has to be build out of rubber between the carb/throttle body and airbox. Velocity Stacks! They allow the carb throat to be lengthened enough so that the engine can maintain vacuum beyond the slide of each carb, as well as allow the air turbulence to be reduced, resulting in a much smoother delivery of air and fuel to your engine. 1998 and up, all dual carb VT750 models- Spirit, ACEįits If you remove the airbox on a Honda Shadow with dual carbs, the carbs will have a hard time creating enough negative vacuum to pull in a steady flow of fuel from the pilot and main jet.They may fit other models or brands however we cannot speak to the fitment. They are made to fit the stock dual carburetors. These velocity stacks will fit Honda Shadow VLX and VT600 from 1988 - 1998, VT500C from 1983 - 1986, and Honda Shadow VT750 dual carb Motorcycles except pre-1998 VT750 dual carb models. Velocity Stacks - Honda Shadow VLX VT600 VT750 - Dual Carb - Gloss Black
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