Head Decked Improperly?

[PokinatchaPunk]

Ok I'm trying to figure out whether or not my deck was properly decked. I recently finished my 6 bolt was and was nicely suprised to have four valves break off during the intial start up. Did all the right priming steps. Everything was set as far as timing goes. 2 Cranks and we heard an unusual sound (probably the valve breaking).


My main question is there are three points(shown below), which if I told correctlly, shows how much the head has been decked. If these three points dont have the same depth that means the decking is uneven right? Also who can tell me the proper depth of these measuring points and what tool you use to measure it with. If I run my finger across all three points some of the points seem shallower then others. (I know my finger isn't the most accurate measuring tool)

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Would this be the cause of what happened? Four valves breaking also damaging my piston? If so how responsible is the shop for this? Can I expect taking them to school for a new engine or just the head? Any help would be appreciated.

 

[treebonker]

Would this be the cause of what happened?

No

If you had the timing set I can only think of... not bleeding the lifters, if they were installed new.

-treebonker

 

[playitlouddsm]

Have you taken it back apart? This sounds more like a timming issue to me. Was the belt tensioned properly? Have you looked to see if it jumped a few teeth?

 

[Talesin]

I'd guess the lifters too. Only weird part is all four coming off the same piston... that'd make me suspect incorrectly set timing.

No, an improperly decked head would simply give you zero compression, or damn near. If it was severely badly decked, it *might* snap off two on the same side. Only way it'd snap all four is if it was decked down ridiculously thin, enough for the proper lift to contact the piston.

 

[PokinatchaPunk]

I'd guess the lifters too. Only weird part is all four coming off the same piston... that'd make me suspect incorrectly set timing.

No, an improperly decked head would simply give you zero compression, or damn near. If it was severely badly decked, it *might* snap off two on the same side. Only way it'd snap all four is if it was decked down ridiculously thin, enough for the proper lift to contact the piston.

Well all four didn't come off on the same piston...they were all on the same side though. They were all intake valves. In fact all the damage "appears" to be on the intake side.

If I knew what the proper measurement was I would tell you but on the same pistons that snaped the intake valves they smashed the sparkplugs

No

If you had the timing set I can only think of... not bleeding the lifters, if they were installed new.

-treebonker

The lifters were not new