Float set, 28.5mm suggested so what would 30 mm act like?

VMAX  Forum

Help Support VMAX Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Just got back from initial test run around the block, I'm taking it on a shopping trip to find O rings for A/F prior to another take apart. Thank You all who gives your time or experience.
 
Last edited:
If it fits and doesn't deteriorate then no reason not to use it, I suppose.

Problems like you complain about at idle are often due to not clean carburetor passages, and require an ultrasonic soak or sometimes two.

You say "at idle, 3 dead cylinders," I'm surprised that it even continues to run at that. I'd believe that the drag of three 'dead' cylinders not firing, would just kill the engine.

https://dn790009.ca.archive.org/0/i...ice-manual/yamahavmaxvmx12-service-manual.pdf

Use the factory service manual and give the carbs a disassembly and ultra-sonic bath, and then scrupulously rebuild the carburetors according to the manual. I know that sometimes I've had to throw the carbs back in the ultrasonic tank if they don't function properly. Rare, but it can happen.

I will use K&N carb parts but I would NOT use the 'all four carburetors in ONE giant package!' generic carb kits from Amazon or ebay. Order Yamaha parts from a dealership, or the K&N parts, All Balls has OK Yamaha replacement parts too.
 
Thanks for that info the thing is it idled great prior to the disassemble wire out and blow out but would act up above idle. Now after idle is supper.. I will keep an eye open for a ultra sonic. I'm jazzed about the plumbing sleeve instead of the steep boots on the v boost manifold works great. Thanks for your guidence here.
 
Thanks for asking and interest in my cluster! As I have removed and cleaned them they either got lost or just fell apart. They don't seem to matter that much I ordered a set from ghina still on the way. The carbs shown above by me and one showing the 128.5 mm ball park setting are upside down compared to installed so i guess wide open flow would be 15to17mm. If i can't get the sync proper I will be pulling them again so will check your measurement then. Thank You for taking the time to suggest or ask if there is a concern.
I don't measure the 15mm - 17mm....I use a pre-set gauge. Yamaha has a wet level gauge which is easy to make & usable with the carbs on the bike. Wet level check is the final word on your fuel levels.
 
Last edited:
Back
Top