# Free valve system good for wood gas? **URL:** http://forum.driveonwood.com/t/free-valve-system-good-for-wood-gas/5144 **Category:** General Discussion **Created:** [March 4, 2020, 11:16pm UTC](http://forum.driveonwood.com/t/free-valve-system-good-for-wood-gas/5144 "2020-03-04T23:16:46Z") **Posts on this page:** 3 **Page:** 1
### Author: ![don\_mannes](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/don_mannes/32/19008_2.png) [@don\_mannes](http://forum.driveonwood.com/u/don_mannes) #### Post date: [March 4, 2020, 11:16pm UTC](http://forum.driveonwood.com/t/free-valve-system-good-for-wood-gas/5144/1 "2020-03-04T23:16:46Z")
This sounds like you could connect the wood gas/air mixture directly to the intake manifold without a throttle body. [![](https://img.youtube.com/vi/S3cFfM3r510/maxresdefault.jpg "Freevalve Update Camless Engine -- /INSIDE KOENIGSEGG") ](https://www.youtube.com/watch?v=S3cFfM3r510&t=440s) ---
### Author: ![bsoutherland](https://avatars.discourse-cdn.com/v2/letter/b/45deac/32.png) [@bsoutherland](http://forum.driveonwood.com/u/bsoutherland) #### Post date: [March 5, 2020, 12:45am UTC](http://forum.driveonwood.com/t/free-valve-system-good-for-wood-gas/5144/2 "2020-03-05T00:45:19Z")
Don, Yes! Thanks for sharing. I’d heard of Freevalve, but this explanation really lays out more advantages than I thought of. He even mentions the 14:1 CR which would be great for running on chargas. Peace, Bruce ---
### 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 29, 2020, 1:35am UTC](http://forum.driveonwood.com/t/free-valve-system-good-for-wood-gas/5144/3 "2020-03-29T01:35:05Z")
14:1 compression may be good for wood gas though regular 87 octain only works up too about 10: half too one i think, any higher and you need high test fuel.? around them numbers.