Engine/EFI/Drivetrain Discuss engine, fuel injection, air intake, and drivetrain modifications here.

 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 07-08-2019, 07:03 PM Thread Starter
Senior Member
 
blue99stroker's Avatar
 
Join Date: Jan 2014
Location: Northern California
Posts: 1,900
View blue99stroker's Photo Gallery(0)
Is a valve job necessary when getting a head ported?

I’m looking into getting the head ported next year. I’m going with a mild port job from dasa.

Im curious if it’s recommended to get their 5 angle Valve job done when getting porting done.

I have 70-90 hours on the atv and plan on reusing the stock valves.

What do you guys think?

It will be a mild build with the addition of a Je 12.8 and other parts already installed

08 KFX450r- DASA, FCI, Stg 2 Hotcams, Wiseco FI, Dynatek Coil

Race Tech dual rate front springs, GT thunder XC Link and Race tech spring, LSR +2 Arms and LSR Axle

Poly Case Saver, Streamline Stabilizer, PRM Skidplates, Pro Armor Bumpers, Tusk Heel Guards, IMS 3.7 tank, 6K HID

Next up: Dasa Port Job, JE Pro 12 12.8 piston
blue99stroker is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 07-09-2019, 12:53 AM
Super Moderator
Premium Member
 
Dust Devil's Avatar
 
Join Date: Oct 2009
Location: Lake Havasu city, Arizona
Posts: 9,494
View Dust Devil's Photo Gallery(0)
Quote:
Originally Posted by blue99stroker View Post
I’m looking into getting the head ported next year. I’m going with a mild port job from dasa.

Im curious if it’s recommended to get their 5 angle Valve job done when getting porting done.

I have 70-90 hours on the atv and plan on reusing the stock valves.

What do you guys think?

It will be a mild build with the addition of a Je 12.8 and other parts already installed
Why don't you inspect your valve seats & repair if necessary...See picture below
& spend the money elsewhere...??

& If it necessary to repair just do a standard 3 angel seat cutting that's (OEM factory)...

If you are upgrading your valve spring to Heavy duty & compression over 13.5:1 then I would recommend a 5 angle job for better seal at higher revving motors (like MX racing)...
Attached Thumbnails
Click image for larger version

Name:	Capture.JPG
Views:	14
Size:	119.5 KB
ID:	24452  

Check with Site Sponsors "First"

(Immortal ATV)
Todd
http://immortalatv.com
1-(800)380-9646
[email protected]
Save 5% off $100 or more, use coupon code: KFX450HQ

(KB Motor-sports)
Website:
http://www.kbmotorsportsonline.com

(Discount Tire)
At The Store: www.discounttire.com
To Your Door: www.discounttiredirect.com
Sales and Technical: 1.888.459.4080





Last edited by Dust Devil; 07-09-2019 at 01:01 AM.
Dust Devil is offline  
post #3 of 3 (permalink) Old 07-09-2019, 09:57 AM Thread Starter
Senior Member
 
blue99stroker's Avatar
 
Join Date: Jan 2014
Location: Northern California
Posts: 1,900
View blue99stroker's Photo Gallery(0)
Thanks DD!
I wasn’t sure if it was necessary to get the seats recut with used valves.

I will look at the seats and valves and make a decision.

Dasa port jobs are super reasonable a 335$...and since I’m just going for a mild cleanup that will make it less costly

08 KFX450r- DASA, FCI, Stg 2 Hotcams, Wiseco FI, Dynatek Coil

Race Tech dual rate front springs, GT thunder XC Link and Race tech spring, LSR +2 Arms and LSR Axle

Poly Case Saver, Streamline Stabilizer, PRM Skidplates, Pro Armor Bumpers, Tusk Heel Guards, IMS 3.7 tank, 6K HID

Next up: Dasa Port Job, JE Pro 12 12.8 piston
blue99stroker is offline  
Reply

  Lower Navigation
Go Back   Kawasaki KFX450 Forum :: KFX450HQ.com > KFX450 Performance > Engine/EFI/Drivetrain

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KFX450 Forum :: KFX450HQ.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome