heymow.com - Lawn Mower Racing Forum
November 22, 2014, 09:22:57 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News:
Want to Join our site? CLICK HERE
 
   Home   Help Search Calendar Staff List Links Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Head question  (Read 806 times)
0 Members and 1 Guest are viewing this topic.
dropzone
Newbie
*

Karma: 0
Offline Offline

Posts: 18


View Profile
« on: April 05, 2014, 10:18:07 AM »

Is there any difference in the CH20 and CV20 heads? It's a CH20S Spec 64510 S/N 3319007311 The engine has a bad valve guide. Also will say a CH25 Head work on this motor?
Logged
TinRabbit
Newbie
*

Karma: 1
Offline Offline

Gender: Male
Posts: 44


View Profile
« Reply #1 on: April 05, 2014, 08:47:44 PM »

Heads for horizontal engines have oil return passage on the intake side while the vertical heads have the oil passage on the exhaust side. You can easily drill out the passage to make one work on the other.
Other than that they are same head, same valve sizes, springs. Now the 25/26/27/28/29hp versions have larger combustion chamber which will drop comp ratio on the smaller cc engines like the 16/18/19/20/22/23 if popped on.
Logged

Litterbox Engine
Kyle
dropzone
Newbie
*

Karma: 0
Offline Offline

Posts: 18


View Profile
« Reply #2 on: April 05, 2014, 09:23:33 PM »

Hey thanks Tinrabbit!
Logged
heymow.com - Lawn Mower Racing Forum
« Reply #2 on: April 05, 2014, 09:23:33 PM »

 Logged
leadslead
Mow-Forum Junkie
***

Karma: 7
Offline Offline

Gender: Male
Posts: 1714



View Profile
« Reply #3 on: April 26, 2014, 07:04:49 PM »

Can u shave the kohler heads like b&s heads or is Thier a clearence issue Thier already shallow ... Don't have a cam yet to check
Logged

STEVE HENDERSON
rotten ron
Turf Warrior
**

Karma: 10
Offline Offline

Gender: Male
Posts: 537


View Profile
« Reply #4 on: May 04, 2014, 08:24:53 PM »

You could fill the chambers with weld and reshape them then you only have the machine them enough to make them flat,when you get a much higher compression ratio it will blow the head gaskets,then it will need to be " O " ringed and use copper head gaskets
Logged
leadslead
Mow-Forum Junkie
***

Karma: 7
Offline Offline

Gender: Male
Posts: 1714



View Profile
« Reply #5 on: May 05, 2014, 05:42:12 AM »

Thanx
Logged

STEVE HENDERSON
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!


Google visited last this page November 18, 2014, 04:41:51 PM