Is a valve job necessary when getting a head ported? - Kawasaki KFX450 Forum :: KFX450HQ.com
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post #1 of 3 (permalink) Old 07-08-2019, 06:03 PM Thread Starter
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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, Stage 2 Hotcams, Wiseco Programmer, Procom, Dynatek Coil, 6K HID, 7" LED Light Bar.

Race Tech dual rate front springs, GT thunder XC Link and Race tech spring

Poly Case Saver, Streamline Stabilizer, Full PRM Skidplates, Pro Armor Bumpers, Tusk Heel Guards, TRX Rear Hubs, IMS 3.7 tank
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post #2 of 3 (permalink) Old 07-08-2019, 11:53 PM
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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)...
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Last edited by Dust Devil; 07-09-2019 at 12:01 AM.
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post #3 of 3 (permalink) Old 07-09-2019, 08:57 AM Thread Starter
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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, Stage 2 Hotcams, Wiseco Programmer, Procom, Dynatek Coil, 6K HID, 7" LED Light Bar.

Race Tech dual rate front springs, GT thunder XC Link and Race tech spring

Poly Case Saver, Streamline Stabilizer, Full PRM Skidplates, Pro Armor Bumpers, Tusk Heel Guards, TRX Rear Hubs, IMS 3.7 tank
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