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Time for top end work (Valves, Rings, ...) - Need some advises

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Hello guys,

 

I have a 2008 DRZ400S for little more than 2 years now. I now have 25000km. I have been noticing a considerable amount of oil consumption (>200ml every 1000km). I reshimmed the exhaust valves a few times (current shim: 298 and a 305). The current clearance for exhaust is .18 and .17mm so again out of spec (.20-.30). As for Intakes I am using 282 and 285 with clearance at .14 and .13.

 

Current mods: JD Jet kits + 3x3 airbox

 

My current plan is to replace/do:

-Exhaust Valves

-Intake Valves

-Valves Seals

-Head Gasket

-Piston Rings

-Adjust Carburator

-Clean the shit off the head and piston

 

Should I buy OEM or ?

Any other advise?

 

Here is a few pictures:

https://flic.kr/s/aHsks9pXqR

 

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24424335781_7ba393d4dc.jpg

 

24481113506_758c80dae6.jpg

 

 

 

Thanks,

Franck

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I would look into fastheads.com for the head work . I had them do work on my 450r a few years ago . They have been involved in moto for quite a while . 

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I would look into fastheads.com for the head work . I had them do work on my 450r a few years ago . They have been involved in moto for quite a while .

i sent my head over to them for a complete revalve, they did an awesome job.

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I personally would use all OEM components. Not sure about a service provider, did mine myself.

Oem would be best for sure.

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Soda blast the head. Hot tank it. Relapping the valves can be somewhat time consuming, but its easy to do. See if you can borrow a valve spring compressor; I had to buy one for $60. I use the wooden sticks and the paste to lap them.

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