# Kawasaki 125 cc GTO Mach 4 **URL:** http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348 **Category:** Charcoal Gasification **Created:** [March 7, 2016, 1:36pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348 "2016-03-07T13:36:35Z") **Posts on this page:** 11 **Page:** 1
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 7, 2016, 1:36pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/1 "2016-03-07T13:36:36Z")
The next i was waiting for… 125CC 18 HP Rotating valve for fuel intake… Having it stripped and cylinder in the shop for over bore, + 2.00 mm ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/f/fe0e880ac15a4a67e6b2f8c618846c55a2245165.jpg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/7/709665d023a2c7eec5c12ecfeede69d57ead1dac.jpg) ---
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 7, 2016, 1:37pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/2 "2016-03-07T13:37:33Z")
This one will have to take the place from the chinese lifan 4stroke engine on the trike… ---
### Author: ![ray\_menke](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/ray_menke/32/11288_2.png) [@ray\_menke](http://forum.driveonwood.com/u/ray_menke) #### Post date: [March 7, 2016, 2:07pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/3 "2016-03-07T14:07:31Z")
Koen, a two stroke rotary valve engine on the charcoal powered trike! Guess it has oil injection, too? ---
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 7, 2016, 3:18pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/4 "2016-03-07T15:18:38Z")
Hi Ray, yes it has, tomorow will post some pictures from the insides of the engine ---
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 8, 2016, 2:45pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/5 "2016-03-08T14:45:13Z")
Sizing up, will fit the frame, measuring the volume in the cylinderhead. Overbore 2.0 mm, adding about 8 cc to the 124cc original, bringing the total to 132 cc 2 stroke , with rotating valve and oil injection 😁 Cylinderhead , nice quenching shape, volume 13 cc Gasket and distance from piston, aprox 0,8 mm, to be modified.. Can’t wait to hear this one roar… Payed 80$ for the entire bike, and 15$ for the overbore work, including piston, gasket and pistonrings… ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/c/c2f12be0d9cc916afaa871bdbd0b8f7fc7c34291.jpg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/2/2ff8333b31ab9e872b2abc9dc234d465b2be8ab7.jpg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/9/970de00d4781e418fe4fb2c099eb1aec56db55df.jpg) ---
### Author: ![BrianHWA](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/brianhwa/32/11361_2.png) [@BrianHWA](http://forum.driveonwood.com/u/BrianHWA) #### Post date: [March 8, 2016, 5:06pm UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/6 "2016-03-08T17:06:39Z")
“2 stroke , with rotating valve” Is there any way to get a picture of the valves? ---
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 9, 2016, 2:08am UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/7 "2016-03-09T02:08:20Z")
Hi Brian, There is 1 rotating valve inside, here are some pictures i got from the internet. It works as a kind of a slide/door to open or close the entrance for the fuel mixture. The advantage is the ease to modify and it has less restriction compared with the reedvalve ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/5/5ebadb190e7da7c46d687de676fdcb1fe6b95534.jpg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/3/372019b252e575a5fb93fb8a908c11aaf461902b.jpeg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/5/54eb94162b9e36afc2d604175f18511a452f53a5.jpeg) ![](https://dow.nyc3.cdn.digitaloceanspaces.com/original/2X/d/d36f94c1aafb6e1d4d6aaf1e744b62e5316b086f.jpeg) ---
### Author: ![wd\_breeden](https://avatars.discourse-cdn.com/v2/letter/w/2acd7d/32.png) [@wd\_breeden](http://forum.driveonwood.com/u/wd_breeden) #### Post date: [March 9, 2016, 3:12am UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/8 "2016-03-09T03:12:19Z")
Does anybody know what “GTO” stands for without looking it up. Remember, the first GTO was Italian. ---
### Author: ![k\_vanlooken](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/k_vanlooken/32/24334_2.png) [@k\_vanlooken](http://forum.driveonwood.com/u/k_vanlooken) #### Post date: [March 9, 2016, 3:48am UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/9 "2016-03-09T03:48:32Z")
Grand Theft Otto ? 😁 Or Grande Tourismo Originale ? ---
### Author: ![Handy\_Andy](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/handy_andy/32/11754_2.png) [@Handy\_Andy](http://forum.driveonwood.com/u/Handy_Andy) #### Post date: [March 9, 2016, 3:49am UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/10 "2016-03-09T03:49:50Z")
Grand Tourismo Oh i forgot ---
### Author: ![kmrland](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/kmrland/32/27959_2.png) [@kmrland](http://forum.driveonwood.com/u/kmrland) #### Post date: [March 11, 2016, 4:50am UTC](http://forum.driveonwood.com/t/kawasaki-125-cc-gto-mach-4/2348/11 "2016-03-11T04:50:58Z")
Just woundering how long them rotating valves have been used,and are they hard too rebuild too keep valve clearance proper? Thanks,nice engine photos.