[diesel_mercedes] Re: Head experts...your insight please

 


O.K. , # 1 looks like it's been burning a bit of oil , # 2 cylinder looks to be scored a little bit .

Junkyard testing tip : turn cam until both valves have clearance and position the head so the ports are facing _up_ , have good light on the combustion chamber and use a squirt bottle full of gasoline to fill the ports , beginning with the intake port each time , it no leakage around the valve , it's fine , 100 % good to go . if some seeping & wetness appears around the valve after a while , it's maginal , plan on valve re facing soon but should still run O.K. .

See a droplet of gas running out ? the valve & seat are burned and must be repaired before re assembly .

This test works really well when buying used heads in junkyards etc.

I hope my Farm / Used Car /Junkyard methods don't offend anyone ,this is how it is done in the real world .

-Nate
Ben wrote:
>
> Well got the head off the donor car today (recall needing to R&R the head on a 1979 W116 300SD). First time doing this so...
>
> If the experts would care to gander at the photos and give me their feedback, I'd be ever so grateful!
>
> http://picasaweb.google.com/116318077355015592300/300SDHeadTurboRedux#
>
> Ben near Detroit
>

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