help on a 83 kz 1100

first i am not new to turning wrenches. self taught and lost now. i bought a kz 1100 ltd not running with no airbox. was told out of time. swapped wires at coil to pick up coils. fired right up. when in neutral idled and revved good. but under load (riding) it ran strong up to 4k rpm then dropped cylinders.
this is what i have done to it in order
made airbox out of pvc and 1 pod. no change
added fuel filter due to rusty tank( but have seen worse run fine) no change
new plugs. no change.
cleaned carbs. no change
checked for bad intake boots and resealed to head. no change
changed carbs. no change
re-jetted from 117.5 to 147 no change.
i am now at a loss. any help in diagnosing this problem will be greatly appreciated.
i am under the impression that it has a fixed timing plate with no adjustment at pick up coils. is this true and how do i check timing?

No eBay APP ID and/or Cert ID defined in Kunena configurationNot sure about employing pods on a stock engine with a restrictive stock exhaust. I'm running the stock air box (w/K&N filter) with a header, using 125 main with the stock spec. 37.5 pilot jets and havie no issues at all. In fact, it will go beyond red-line fast, with little effort.

Examine the timing advance weights, and check that they move freely. Be sure to synchronize the carburetors.

Also, having a Kawasaki service manual for the bike would help you immensely.
See:

got it. was vacume leak and 2 main jets off in boul. can't run anything but pods 147 mains are a bit on the rich side but doesn't flood out. bike runs well over 10k easly. tks for making me think it out.

www.kawiworld.com/index.php?option=com_c...icle&id=77&Itemid=99

scooterttrash68 wrote: got it. was vacume leak and 2 main jets off in boul. can't run anything but pods 147 mains are a bit on the rich side but doesn't flood out. bike runs well over 10k easly. tks for making me think it out.

There's no reason to rev the engine that high. The KZ1100 makes its maximum power at 8,500 rpm. Beyond that, the power drops off rapidly. So at 10,000 rpm its making about the same power that it would at 6 or 7,000 rpm. Not only does it make very little power at that high rpm, revving it that high will shorten the engine's life. Ed

i know. but had to see how it would top out. i dont push much over 7k when hard on it. just had to try. i started out way back when with a h1 500 then went to the sohc 750 hondas and jumped into the z1 900s and kz 1000s most was chain drive but had a 80 shaftie. fun bike with the 29mm smooth bore carbs with 121 jets.on a stock build full dresser.

scooterttrash68 wrote: i know. but had to see how it would top out. i dont push much over 7k when hard on it. just had to try. i started out way back when with a h1 500 then went to the sohc 750 hondas and jumped into the z1 900s and kz 1000s most was chain drive but had a 80 shaftie. fun bike with the 29mm smooth bore carbs with 121 jets.on a stock build full dresser.

Striven for precision...