Go Back   ChinaRiders Forums > Technical/Performance > Street
Register FAQ Community Calendar Today's Posts Search
Reply
 
Thread Tools Search this Thread Display Modes
Old 12-11-2008, 04:30 PM   #1
bobberjohn   bobberjohn is offline
 
Join Date: Jul 2008
Posts: 18
163 FML cylinder head

Anyone know where I could purchase a new
or used (no cracks!) Lifan 163 FML head? Looking
to do a full port job, and still want to keep my
low mile stocker as a backup.


 
Reply With Quote
Old 12-14-2008, 02:38 AM   #2
Qingdao   Qingdao is offline
 
Join Date: Jun 2008
Location: Charleston, SC
Posts: 351
You can buy a whole engine for under $400 last I checked.

I don't think you will find a seperate head though. Just cause of the small useful life of a china bike.
__________________
<div><a href="http://www.youtube.com/watch?v=X2ilH...s</a></div><br />


 
Reply With Quote
Old 12-14-2008, 09:24 PM   #3
bobberjohn   bobberjohn is offline
 
Join Date: Jul 2008
Posts: 18
Many thanks for the reply. What sort of "high wear parts"
should I expect from the 200? I'm also running a custom
stepped header (1" to 1.250" to 1.50" collector) and
noticed your jetting. I appreciate
the openness to share performance insites. Was wanting to
flow around 80-85 percent exhaust to intake ratio, and feel there is
a lot of potential in the little engine. Thanks again for the reply.
By the way, what combinations of piston and connecting rod options
are available for it? Flycutting, decking the piston, re-ground cam, etc. isn't a problem.


 
Reply With Quote
Old 12-15-2008, 03:46 AM   #4
Qingdao   Qingdao is offline
 
Join Date: Jun 2008
Location: Charleston, SC
Posts: 351
Everything on these bikes like to go pretty fast, but I have heard of more electrical problems than any other thing. Mainly the battery and charging systems.

As far as performance there is not much you can do. I guess high modification isn't a problem, but I don't know if the little motor could take it. Custom from a machine shop is going to be your best bet.

You could mabye find a piston, cam, or rods at a dealer ship, but they usualy don't do "parts in a bin" any more so you'd have to know a motor thats simmilar.
__________________
<div><a href="http://www.youtube.com/watch?v=X2ilH...s</a></div><br />


 
Reply With Quote
Old 12-15-2008, 09:09 AM   #5
katoranger   katoranger is offline
 
katoranger's Avatar
 
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
You might want to post in the wanted section and also give Bruce a call at EJcycles. 330-274-0098 He may have one.

Allen
__________________
You meet the nicest people on a Honda Clone.


 
Reply With Quote
Old 12-15-2008, 08:26 PM   #6
bobberjohn   bobberjohn is offline
 
Join Date: Jul 2008
Posts: 18
Many thanks for the replies. Glad I found the forum,
it's proved to be very informative. Might do some
research into Honda engines to find a close match
to piston diameter, stroke, rod length, cam timing, etc. Good forum
ya'll have. Clean and lots of info.


 
Reply With Quote
Old 12-16-2008, 04:40 PM   #7
katoranger   katoranger is offline
 
katoranger's Avatar
 
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
For the honda look at the xl185 and the atc engines. Also the crf230 I think. One of them might be close.

Allen
__________________
You meet the nicest people on a Honda Clone.


 
Reply With Quote
Old 12-16-2008, 09:17 PM   #8
elroyjetsn   elroyjetsn is offline
 
Join Date: Mar 2008
Location: West Virginia
Posts: 629
New Cylinder Heads

This may be what you're after. Says from a GY6, but being sold as a "150".

http://www.chineseatvpart.com/cylind...50cc-atv/p221/

Any Honda CG head will probably do as well.
__________________
Wayne
Wildfire WF300-SP


 
Reply With Quote
Old 12-17-2008, 05:32 AM   #9
DDG1976   DDG1976 is offline
 
Join Date: Aug 2008
Location: Ringgold, Ga.
Posts: 410
Send a message via Yahoo to DDG1976
Re: New Cylinder Heads

Quote:
Originally Posted by elroyjetsn
This may be what you're after. Says from a GY6, but being sold as a "150".

http://www.chineseatvpart.com/cylind...50cc-atv/p221/

Any Honda CG head will probably do as well.
I think that one's overhead cam. I think he's looking for a pushrod head.
__________________
I have all of soberday to satur up!!


 
Reply With Quote
Old 12-17-2008, 12:22 PM   #10
elroyjetsn   elroyjetsn is offline
 
Join Date: Mar 2008
Location: West Virginia
Posts: 629
This is what an OHC should look like:

__________________
Wayne
Wildfire WF300-SP


 
Reply With Quote
Old 12-17-2008, 12:27 PM   #11
katoranger   katoranger is offline
 
katoranger's Avatar
 
Join Date: May 2007
Location: Altamont, Kansas
Posts: 15,103
Thanks for clarifying. My suggestions would be OHC and probably not work.

Need to look at the GY2 type engines. Again Bruce may have one from a damaged engine etc.

Allen
__________________
You meet the nicest people on a Honda Clone.


 
Reply With Quote
Old 12-17-2008, 07:59 PM   #12
bobberjohn   bobberjohn is offline
 
Join Date: Jul 2008
Posts: 18
Mine's definately the OHC. Wish there was enough meat in there
to press in a cast iron cylinder wall. If I come up with anything, I'll
post up. Many thanks for the replies. Again, you folks have a very
good forum. Glad I found you folks.


 
Reply With Quote
Old 12-17-2008, 08:20 PM   #13
suprf1y   suprf1y is offline
 
Join Date: Oct 2007
Location: SW Ontario
Posts: 408
If you need any help with the cam, and can take a few measurements, let me know, I'm in the custom cam business.
I likely don't have any good profiles for your application, but I can probably point you in the right direction


 
Reply With Quote
Old 12-19-2008, 05:50 PM   #14
bobberjohn   bobberjohn is offline
 
Join Date: Jul 2008
Posts: 18
What are your re-grind parameters as far as
tightening up the lobe center, lift change in
thousandth's and duration gain? I'm Sure there are no
cam cores for this thing! I'm guessing duration is around
210-220 . Emailed the company with the cylinder head
(150 and suposedly 200 sport bike) and have yet
to hear back.


 
Reply With Quote
Old 12-19-2008, 08:15 PM   #15
suprf1y   suprf1y is offline
 
Join Date: Oct 2007
Location: SW Ontario
Posts: 408
Good call on the duration numbers.
It sounds like you know cams.
My guess would have been exactly the same.
As far as lobe center, I would leave it.
If you're after a lift/duration increase, you're going to eat up all the spare lobe you have doing that. I don't know what you want to do, but I think a D around 235-245 at .050" might be a good start. Lift on those cams is probably somewhere in the .200"-.240" range.
Depending on base circle diameter, I like to stay in and around +.035"-.040" in lobe lift, and and +20-30 in duration at .050". That usually keeps the geometry OK, and has little effect on rocker ratio. Those lobes will likely also have a real steep ramp on one side. Try to stay with a profile similar in appearance. It will help performance, but also reduce base circle reduction.


 
Reply With Quote
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:50 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.