![]() |
#16 |
Join Date: Jan 2020
Location: South Texas
Posts: 15
|
Took .5 of a gram off each valve decided to start small, I bought a valve removal tool that works so its easy to take off an put on now. Engine is mostly back together waiting for feeler gauges to set valves but I think I stopped the engine at beginning of exhaust stroke like a smart person so I need to turn it over to actual tdc before I do that. Main jets are otw as well. I drilled the one in it currently but I am almost sure its going to be too rich (went a little to far). Hopefully will be able to ride by this weekend. Leaving this as inspiration even though its shoddily done
|
![]() |
![]() |
#17 |
Join Date: Dec 2019
Posts: 54
|
When you talkin about the 250cc upgrading to a 300cc jug would you feel that 30cc difference? Also what kind of Cam did you buy and do you have a link
|
![]() |
![]() |
#18 |
Join Date: Dec 2019
Posts: 54
|
One of the reasons I'm asking is because here in Mexico they do sell a 300cc version of a hawk style clone but the price difference is about $1,000 more for the 300. Reading what you said it makes me wonder what actual cc's are in those 300s. Is it more cost-effective just to buy the 300 or how much do one of those 300cc jugs cost
|
![]() |
![]() |
#20 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
Here is my weird take on it, and this is coming from a guy that has put a lot of time and a little bit of money into his CG clone trying to get more performance out of it.
You could spend quite a lot of money chasing power out of one of these engines. stainless valves, custom piston, cam, etc. Heck, even a small ihi turbocharger. You might get an impressive 25hp or so out of it, even without forced induction Or, you could buy a used XR250R engine, instantly have 25hp, gain a 6th gear, have factory reliability, and all you need is to maybe fab a couple of mount brackets. Sounds like a strange thing coming from me, but my pursuit of better performance from my Hawk engine is purely just because I love to tinker around. My whole goal was to get as much as I could with minimal investment. Porting the head myself only cost me maybe 40 bucks. The cam I ordered, 95 bucks. The carb I have, which I could have gone cheaper and probably had the same results, also 95 bucks (cheaper route is about 35 dollars). At the end of the day, if I took this sub 15hp rated engine and got it to make even 22hp, I would be happy and impressed with the results. One thing I have always been cognizant of is the nature of this engine. It is a 2 valve pushrod engine made in China. It will have limitations, and it will never be as good as many other engines out there.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
![]() |
![]() |
#21 | |
Join Date: Jan 2020
Location: South Texas
Posts: 15
|
Quote:
![]() |
|
![]() |
![]() |
#22 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
You and I have the same problem lol.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
![]() |
![]() |
#23 |
Join Date: Aug 2020
Posts: 21
|
How is the CH engine coming along. I’m very interested
|
![]() |
![]() |
#24 |
Join Date: Aug 2020
Location: Australia
Posts: 1,345
|
If I am not mistaken BoostedBois Kyle on youtube made a shifter shopping go kart from what apears to be a Zongshen CG200/250 which ended up getting turbocharged and then more interestingly had an after market EFI/ECU unit installed.
Could be worth perusing if you trying to squeeze everything out of a Chonda engine. |
![]() |
|
![]() |
![]() |
Tags |
cg250, hawk250, performance |
|
|