Black Bear
New member
Throttle Junkie35
New member
It appears you have a pretty good handle on your projects. Look'n good. 
Black Bear
New member
Can anyone confirm for me the correct part number for the Viton Needle and Seat? VM28/511-1.5?
Throttle Junkie35
New member
I would think the part number would start with VM38. There are really only three popular needle valves used in sleds. Tall VM, short VM, or push-in style for TM's. 99% of the sleds out there will use a 1.5 flow rate. For your exciter you need a tall, 1.5 flow rate for a VM38
Very nice! Reminds me of the exiters in "Die Hard", but they had blue decals? Do you know what year model they were?
shaggyzr2
Active member
I believe the 1990 exciters had the blue decals.
Throttle Junkie35
New member
Yep, I believe the blue Exciters were 1990 electric start models.
dsc577
VIP Member
i got a parts sled thats blue,1989 electric start model
Black Bear
New member
Here is what info I gathered from Dennis Kirk.
Mikuni VM28/511- series; fit all Mikuni 30-44 mm aluminum spigot mount. I now have to address crank seals on two of my engines as the rpms will drop if I spray carb cleaner on the PTO seal. I am nervous that I will screw it up.
Mikuni VM28/511- series; fit all Mikuni 30-44 mm aluminum spigot mount. I now have to address crank seals on two of my engines as the rpms will drop if I spray carb cleaner on the PTO seal. I am nervous that I will screw it up.
Thanks, I've been wondering that for a while.
Throttle Junkie35
New member
Just checked one of my catalogs. You do have the correct Mikuni part number. I have bought a ton of those needle and seats but never put that part number in the brain. LOL. Also, yes, the 89 electric start exciters are blue. One of the few I have yet to own.
Throttle Junkie35
New member
Hey BlackBear, It seems like your pretty handy and seals should be a breeze for you. Just take your time. One thing that makes assembly a lot easier is to clean EVERYTHING thoroughly. I personally hate assembling a greasy grimy POS. Clean parts make for a smoother, cleaner job. Make sure you clean any old sealant off the cases and rinse, rinse, rinse!! You will find that there will be a corroded mess on the cases where the seals seat. Take a scotch brite pad to remove the residue and you will be good to go. I use lacquer or acetone to wipe down the mating surfaces prior to applying the sealant on the cases to remove any oil or other things that may cause an issue with sealing or proper mating of the halves. Good luck with your projects!!