KZ1000 jet questions

Hello, been lurking and using the search function for a couple days but cant really find the answers im looking for. i finally bought a KZ1000, its a 78 and im planning on running an open 4-1 and a set of pods or a breadbox aircleaner. can anyone give me a baseline of where i can start the jetting process? im not too familiar with KZs, this is only my third one and i didnt have the other 2 very long but i intend on keeping this one. most of my experience is with Honda SOHC bikes, so i apppreciate any help.

55fbomb wrote:

Hello, been lurking and using the search function for a couple days but cant really find the answers im looking for. i finally bought a KZ1000, its a 78 and im planning on running an open 4-1 and a set of pods or a breadbox aircleaner. can anyone give me a baseline of where i can start the jetting process? im not too familiar with KZs, this is only my third one and i didnt have the other 2 very long but i intend on keeping this one. most of my experience is with Honda SOHC bikes, so i apppreciate any help.

what carbs are you using?

what ever came on it stock, i dont have the bike at my house yet, and i wont have the money for anything better for a while.

"i dont have the bike at my house yet"... Good then you have time to read & study...

This zipped file covers pretty much everything you need to know regarding carb theory, operations, JETTING, trouble shooting and extremely important Spark Plug reading....

Carb Manual & Theory:
kzrider.com/index.php?option=com_docman&...d&gid=461&Itemid=108

Stock oem carbs ---

1978 KZ1000-A2 (standard) Mikuni 26mm VM26SS 105R main and 15 pilot

1978 KZ1000-D1 (Z1R cafe racer) Mikuni 28mm VM28SS 107.5R and 15 pilot

Before any jet change, would perform throttle chop test with plug readings.

Would continue using the stock airbox.
Maybe with a K&N filter if preferred.
Actually, a fresh oem paper fold air filter flows almost as much air, and with superior filtration.

Good Fortune!

Another useful piece of info....

Someone just asked this.. 120 mains 20 pilots needle cliped on 3rd spot..

thanks for all the good info, the guy has work all week and his shift offets mine so i cant get it until his day off on thursday. all i been doing is reading and trying to gather as much info as possible. im hoping the bike has a stock air box with it so i can just sync the carbs after they are clean and run it but it has a breadbox on it so i might be stuck with that for a while. im curious to see if anyone has been in the carbs and changed jets or if they just taped off pieces of the breadbox until it ran. thanks again guys.

I got it today, finally, and i lied, its a 77. its rough but only has 11 thousand some odd miles on it. i have the carbs off and some parts soaking. its all stock but i didnt get the stock air box and the guy gave me a brand new, still in the boxes, set of K&N pods. i cant wait to get this old sucker fired up.

Hi all,

I'm getting ready to buy a stock '79 KZ1000E1 w stocks carbs and exhaust. According to one post above, the E1 (shaft drive) version comes with a larger main jet than the other models.

If I want to put an aftermarket 4 into 1 pipe on her, what would you recommend jetting her with?

Thanks!

try the same jetting that chance recommended above it will be very close.

timebomb33 wrote:

try the same jetting that chance recommended above it will be very close.

Yea!

Welcome Home, TB!

Good Fortune!