Intake valves? Need diagnosis - video/audio provided - Page 3

spldart · 06-25-2015, 10:37 PM

Even though you don't have a hole in the piston that is still unsafe territory for
rebuild.

Needs:
New piston
New rings
A new gasket
New single valve
New keepers "just to be sure"
New spring "just to be sure"

Fresh hone on cylinder
The labor on the top end job in general

Me?! I'm still researching chinese alternative for engine parts for gz owners. Just emailed someone on a cyl bor kit tonight

My malady is low compression. Still running but yeah.

spldart · 06-25-2015, 10:40 PM

Thanks again for sharing all the pictures. We all learn from this stuff all forensic like

hotshot38 · 06-25-2015, 10:46 PM

The Spring looks ok...but the valve guide is pooched also

spldart · 06-25-2015, 10:55 PM

I let my fav old machine shop press in valve guides. So ... yeah...
That's another tab on the bill.

I'm thinking your right... This is a boneyard situation

spldart · 06-25-2015, 11:09 PM

I'm still staring at that valve seat....
It doesn't look like the valve was striking it properly for a while before engine failure.....
I dunno..
Just saying..

06-25-2015, 10:37 PM	#21
spldart Senior Member Join Date: May 2015 Location: Stafford, Texas Posts: 604	Sorry..... Even though you don't have a hole in the piston that is still unsafe territory for rebuild. Needs: New piston New rings A new gasket New single valve New keepers "just to be sure" New spring "just to be sure" Fresh hone on cylinder The labor on the top end job in general Me?! I'm still researching chinese alternative for engine parts for gz owners. Just emailed someone on a cyl bor kit tonight My malady is low compression. Still running but yeah. Login or Register to Remove Ads Last edited by spldart; 06-25-2015 at 10:52 PM. Reason: "edit" NEW means the rings and gasket. The rest can be good used parts.
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06-25-2015, 10:46 PM	#23
hotshot38 Junior Member Join Date: May 2014 Location: San Antonio, TX Posts: 11	The Spring looks ok...but the valve guide is pooched also Login or Register to Remove Ads
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06-25-2015, 10:55 PM	#24
spldart Senior Member Join Date: May 2015 Location: Stafford, Texas Posts: 604	I let my fav old machine shop press in valve guides. So ... yeah... That's another tab on the bill. I'm thinking your right... This is a boneyard situation Last edited by spldart; 06-25-2015 at 11:00 PM. Reason: Don't trust the spring. If you build... Take a donor spring.
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06-25-2015, 11:09 PM	#25
spldart Senior Member Join Date: May 2015 Location: Stafford, Texas Posts: 604	I'm still staring at that valve seat.... It doesn't look like the valve was striking it properly for a while before engine failure..... I dunno.. Just saying.. Login or Register to Remove Ads
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06-25-2015, 10:40 PM	#22
spldart Senior Member Join Date: May 2015 Location: Stafford, Texas Posts: 604	Thanks again for sharing all the pictures. We all learn from this stuff all forensic like
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