I would like to hear some opinions on the life expectancy of 1st Gen carb diaphragms...
Last week I received a set of four new ones from Sirius Consolidated in Kitchener. They appear to be really nice quality, probably on par with the stuff Yamaha sells. I had some problems getting the carbs synched right last time I tried, fairly consistent in idle, huge difference at 2000 and 3000 rpm's. Ordered new diaphragms just to have them on hand in case a problem arose.
Anyway, the diaphragms were replaced about 18k miles ago when a dealer in San Bernardino county rebuilt the carburetors. I have the receipt for almost $900 in parts and labor from the PO.
Imagine my surprise when I removed the covers, all four diaphragms have significant holes in them, same amount and pattern in all four. So how long are these things supposed to last???
The bike runs much better now, lot more top end power, noticed that my trusty old Mercury MotionPro must have been damaged last weekend and ended up ordering a Morgan Carbtune...
Klaus