KX Riders

Maintenance & Technical => KX500 Original => Topic started by: bingowings on July 17, 2008, 03:41:48 AM

Title: kx443
Post by: bingowings on July 17, 2008, 03:41:48 AM

 Not quite a 500 but not far off. A bit of competion for Maico 490's. :-)
Title: Re: kx443
Post by: stock500 on July 17, 2008, 04:54:10 AM
That thing is Sweet.  Those older big bore two stokes make you a man reall quick, because you don't want to cry while you are picking the gravel out of your A$$ in front of you friends.
Title: Re: kx443
Post by: stewart on July 17, 2008, 06:32:40 AM
love at first sight
Title: Re: kx443
Post by: moreccsthanlbs on July 17, 2008, 01:37:10 PM
omg......beautiful bike!!!!!!
Title: Re: kx443
Post by: CR480R on July 18, 2008, 11:17:12 AM
443? Is that a KX420 with a KDX450 crank?
Title: Re: kx443
Post by: KXDINO on July 24, 2008, 09:56:38 PM
Just checking out this nice looking KX 443

Just like to know more  about this machine, as I recall this machine was never a production machine. It either a works bike or a KX 250 A5 79 Model with a 443cc motor slipped in.

As I recall they did have a 443 works bikes, but I only remember them with a uni - trar suspension.

Kawasaki never made a production big bore in 78/79. KX 420 appeared n 1980/81 then dissappeared until 1983 KX 500 A1 air-cooled.

any information on it's history would be great.

I nearly have all KX pamplets from 74 to 2007!!!  now kawasaki australia doesn't print them anymore.

Might have to get them from the States, can any one help??????
Title: Re: kx443
Post by: bingowings on July 24, 2008, 10:31:18 PM

  It is a 1979 KX250 A5 rolling chassis with a KX420 engine JUST slipped in. The crank is a genuine Kawasaki 443
replacement. I rode it last weekend, nothing fell off bar me. Like riding an auto, very smooth. :-D
Title: Re: kx443
Post by: bingowings on August 20, 2008, 08:55:40 PM

 Another pic, I've now fitted new side plates from Nightmare Racing . Excellent quality.
Title: Re: kx443
Post by: sintax on August 22, 2008, 07:17:03 PM
way too awesome! I love the classic 2t bikes!

Kinda makes me wish I did not give away that 79 Honda 250 I had.
Title: Re: kx443
Post by: The Flyin Hawaiian on August 23, 2008, 03:57:34 AM
Your bike looks great! I have a 75 KX250 and a 80 PE400 Suzuki projects that I hope to get to this winter. Those Nightmare sidepanels look nice!
Title: Re: kx443
Post by: Charlie500 on August 23, 2008, 12:36:43 PM
That bike looks great! my buddy just pulled a kx 420 out of a barn in the back of a vinyard a couple months ago. the owner just gave it to him. we cleaned the carb and tank. put some fresh gas in it and it started right up!
Title: Re: kx443
Post by: kxs in oz on August 27, 2008, 10:35:41 AM
Hi bingowings here is a couple of pisc of my kx250 a5 with a big bore motor  478cc been racing it for 3 years now been great
Title: Re: kx443
Post by: holeshot buddy on August 27, 2008, 08:57:08 PM
gee simon you could have given the pipe a scrub up :-D
heres a better picture 8-)
Title: Re: kx443
Post by: bingowings on November 29, 2008, 09:41:18 PM
gee simon you could have given the pipe a scrub up :-D
heres a better picture 8-)
Simon, What length are the Fox shoxs and do thre work well on the KX?
Title: Re: kx443
Post by: OzzyGreg on January 31, 2023, 08:40:17 PM
.
Sorry to dig up a VERY old post, but as a KX420 owner, I’m intrigued about the 443 kit motors.
I’m seriously considering writing a book on air cooled KXs and KDXs and this sort of info would be invaluable.
I’m really hoping to be able to write/publish something similar to my last book on Yamaha 2 Stroke road racers. 

http://www.tz350.net/yamaha_two_stroke_production_roadracing_motorcycles.htm
 
Title: Re: kx443
Post by: sandblaster on February 20, 2023, 06:24:44 AM
If I were you I would join FaceBook (If your not already) Look for the group KX Guru Racing. You will have access to many Kawasaki factory Techs and a Engineer who helped build and develop the big bore KX's for Kawasaki. Tom Morgan, Doug Haas, David Pyle, John Braasch and others. I own 3 different Air cooled KX500's and the help and advice has been invaluable.
Title: Re: kx443
Post by: KXDINO on February 20, 2023, 06:09:46 PM
IF YOU look up a old aussie mag called trail and track 1981 august you will find a full test of the kx440 and what the kit consisted off , jetting specs and other things to keep a eye on.Good artical.