Register Today!
» Log in
User Name:

Password:

Not a member yet?
Register Now!
» Ezine

Want to receive a monthly Ezine with great content? Subscribe here.

Name
Email
State
» Recent Threads
Braaap bikes
23-12-2009 02:13 PM
Last post by Punisher
Today 01:40 AM
My Newest...
03-03-2010 04:53 PM
Last post by WeRideMinis
Today 01:39 AM
braaap maestro...
Yesterday 09:34 PM
Last post by jmadden91
Today 01:23 AM
Genuine...
12-02-2010 02:56 PM
Last post by grnman
Today 12:43 AM
my new drift...
11-03-2010 11:54 PM
Last post by TyD
Yesterday 11:29 PM
» Bike Information
» Announcements
Announcement 

how to remove valves and springs

Posted in Tech Talk

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 16-03-2007, 10:39 PM
epod's Avatar
Senior Member
 
Join Date: Oct 2006
Posts: 151
epod Showing some potential
Post how to remove valves and springs

G'day all. Just installed a new high lift cam in lifan 127 get barrel bored out on monday. Have one problem I also want to install new longer valve springs but I have not worked out how to get the old one's out. Can anybody please help.
Ride on.
Reply With Quote
  #2 (permalink)  
Old 16-03-2007, 10:46 PM
sik-pj's Avatar
Senior Member
 
Join Date: Sep 2006
Location: South Morang Pit Bike Track In The Space Ship
Posts: 1,920
sik-pj Showing some potential
Send a message via MSN to sik-pj
lolz epod u always doing stuff with ya motor lolz it must fang man......
Reply With Quote
  #3 (permalink)  
Old 16-03-2007, 10:46 PM
Hillz's Avatar
W.C. Street Killa
 
Join Date: Feb 2007
Location: Perth Hills
Posts: 3,962
Hillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniridersHillz is behind the bars for miniriders
Send a message via MSN to Hillz
you need a valve spring compressor, simalar to a g camp, i would suggest you read any kind of 4-stoke manual for the how 2's off valve spring removal.
__________________
MDG Bush rider, Who wants to try & keep up?
Reply With Quote

  #4 (permalink)  
Old 16-03-2007, 11:06 PM
Maylands Performance's Avatar
Senior Member
 
Join Date: May 2005
Location: Adelaide
Posts: 339
Maylands Performance Unknown ability
Wink

Hi Epod.Just take your cylider head to an engine re-conditioning shop.They will take the valve springs ,collets etc off for a few bucks for their social club fund.When you need them re-fitted just do the same.It is cheaper than buying a valve spring compressor,a tool you will probably never use again.Also less chance of damaging the valve stem seals or worse bending a valve..
__________________
EAST 50's Ph. 08 83635050 or 0410487366 www.east50s.com.au
Check out our new store at 199-201 Payneham rd. St Peters.
Reply With Quote
  #5 (permalink)  
Old 16-03-2007, 11:06 PM
epod's Avatar
Senior Member
 
Join Date: Oct 2006
Posts: 151
epod Showing some potential
Smile Cheers 4stroke manual is a good idea.

It's gona go like a rocket thanks to advice found on this site and from Ranukar of Akunar in thialand who has been heaps of help with parts. Just gotta do some mild port work to the head and wack in the high comp piston next week, making it 134cc. The stock springs seem to short for the high lift cam so just waiting on some longer one's from akuna.
Cheers, anybody know how much the tool ( spring compressor) is worth? Do they come in diff sizes.
Ride on
Reply With Quote
  #6 (permalink)  
Old 16-03-2007, 11:09 PM
epod's Avatar
Senior Member
 
Join Date: Oct 2006
Posts: 151
epod Showing some potential
Thanks marrylands

Thanks for the advice, I think I shall take the head to the bike shop in cooma on monday, get them to remove the springs.
Ride on.
Reply With Quote

  #7 (permalink)  
Old 16-03-2007, 11:14 PM
Maylands Performance's Avatar
Senior Member
 
Join Date: May 2005
Location: Adelaide
Posts: 339
Maylands Performance Unknown ability
Wink

Epod.You dont need or use "longer valve springs" when fitting a high lift or performance cam.In fact usually performance springs have less coils per length [but stronger PSI rating]and are about the same free length as a STD spring to allow for the extra cam lift to prevent coil binding at full valve lift.

Ps ..We only use longer springs in cylinder heads when we have had to use longer valve stem lengths or deepened the valve spring seat recesses in the cylinder head to compensate for Radical cams with massive increases in valve lift .
__________________
EAST 50's Ph. 08 83635050 or 0410487366 www.east50s.com.au
Check out our new store at 199-201 Payneham rd. St Peters.
Reply With Quote
  #8 (permalink)  
Old 16-03-2007, 11:18 PM
Maylands Performance's Avatar
Senior Member
 
Join Date: May 2005
Location: Adelaide
Posts: 339
Maylands Performance Unknown ability
Talking

Valve springs compressors come in quite a few sizes and styles.Pricing from $20.00 to $650 for one we have It is a Pneumatic Heavy v/spring compressor nescesary for Triple valve springs fitted to Keith Black hemis etc
__________________
EAST 50's Ph. 08 83635050 or 0410487366 www.east50s.com.au
Check out our new store at 199-201 Payneham rd. St Peters.
Reply With Quote
  #9 (permalink)  
Old 16-03-2007, 11:44 PM
epod's Avatar
Senior Member
 
Join Date: Oct 2006
Posts: 151
epod Showing some potential
Top dead centre.

Hello again. So the problem I have is that the valves are slightly open with the 6.9ml lift cam cam at top dead centre. Could I jsut have the cam out off centre slightly. May this be the problem. I just thought the springs were not long enough. I shall take a photo in the morning to show what I mean.
Cheers epod.
Reply With Quote

  #10 (permalink)  
Old 17-03-2007, 12:18 AM
PICCOLO's Avatar
Senior Member
 
Join Date: Jan 2007
Location: Mudgee NSW Austraila
Posts: 120
PICCOLO Showing some potential
yeah thats the go i let us see whats happening but i think you might have the wrong cam maybe but i am prob wrong
__________________
MSO Elite, Pro Tapers, IRK, Makita sticker kit, Lightend oil slinger More to come I wish they knew what grease was in china
Reply With Quote
Reply


Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
crf50 clutch springs jack_rides_stp Crf/Klx/ttr/Drz Section... 2 28-10-2008 08:54 PM
Wtb , crf50 front springs jack_rides_stp Want To Buy 6 09-10-2008 07:10 PM
how to remove valves damann33 Tech Talk 18 20-01-2008 03:06 PM
Heavier clutch springs Dirtrider Tech Talk 3 22-12-2007 03:26 PM
Should I remove valves for port work. epod Tech Talk 5 18-03-2007 11:06 PM

» Sponsor Advertisement
» Miniriders Blog
Welcome Bike Communities From Mitch Sanders
Hey, Ok So, you don’t know me from a bar of soap, but in the not too...
» Read More
Wishing You All a Happy New Year
Hi, this is the Owner of www.miniriders.com.au. I want to personally thank you...
» Read More
MINIRIDERS EZINE UPDATE
Dear Members, As you know we have had a subscription optin on the front page to...
» Read More
» Current Poll
FOTM ~ march2010
woods11 - 3.57%
2 Votes
coolmodee01 - 1.79%
1 Vote
thump*140 - 3.57%
2 Votes
wogtaz ryder - 35.71%
20 Votes
atomik boy - 3.57%
2 Votes
mboyg1 - 0%
0 Votes
TyD - 3.57%
2 Votes
no_crf50_here - 16.07%
9 Votes
punisher - 1.79%
1 Vote
tommy_38 - 30.36%
17 Votes
Total Votes: 56
You may not vote on this poll.
» Sponsor
» Online Users: 41
5 members and 36 guests
jmadden91, krazed0451, Motovert Pro, nicko451, TyD
Most users ever online was 734, 11-11-2009 at 10:46 PM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.1.0
All times are GMT +11. The time now is 02:07 AM.