The I want you to die thread

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john o

john o

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Feb 3, 2011
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McRat said:
Book data, warranty pays 16.7-23.6hrs, actual 23.8-32.6hrs for a HG R&R.

If you are an ace, you might do 1 in 10 hours? Unlikely though.

DOH!!! Edit:

16.7 warranty 23.8 actual for ONE bank.
23.6 warranty 32.6 actual for both.

Unlikely a typical guy with skills could remove 1 head in 10 hours, much less put it back together.
Click to expand...


well my mechanic works for gm and he's an ace:roflmao:
 
Chevy1925

Chevy1925

don't know sh!t about IFS
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There are too many guys here who will let misinformation come about and STAY as the correct way.

BTW, ive yet to see anyone break off a LB7, LLY, LBZ, LMM, LML high pressure fuel line. those damn things are over a 1/4" thick, you would be way more likely to round or strip the threaded bungs before breakin a line
 
adeso

adeso

wait, what?
May 30, 2011
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I spend way too much time on here, I need to hook the TV up or go fix the lathe and start making sumps again. Think that might be a good idea
 
NC-smokinlmm

NC-smokinlmm

<<<Future tuna killer
May 29, 2011
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McRat said:
Book data, warranty pays 16.7-23.6hrs, actual 23.8-32.6hrs for a HG R&R.

If you are an ace, you might do 1 in 10 hours? Unlikely though.

DOH!!! Edit:

16.7 warranty 23.8 actual for ONE bank.
23.6 warranty 32.6 actual for both.

Unlikely a typical guy with skills could remove 1 head in 10 hours, much less put it back together.
Click to expand...

I guess you go strictly by the book then. Does it say to send the heads out for inspection when changing a HG?

This is a question, not shit talking....
 
Chevy1925

Chevy1925

don't know sh!t about IFS
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NC-smokinlmm said:
I guess you go strictly by the book then. Does it say to send the heads out for inspection when changing a HG?

This is a question, not shit talking....
Click to expand...

you can not accurately check a heads flatness by using a straight edge. if there is .010 difference you will not see it or accuratly say the head is completely flat is every direction possible. Aside from the fact you cant test for leaky valve seats and guides as well.

Even if you DONT go by the book, the average joe IS NOT gunna do both heads in at or under 10 hours, not even in 15. if you did it day in and day out and had every tool you needed lined up infront of you, used air tools on damn near every bolt, dont care where the coolant falls, and dont put EVERY single bolt back in that holds bracketry and what not, you MIGHT squeak 10 hours out of it. and thats assuming you run into no issues.
 
Gp184

Gp184

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Nov 24, 2011
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NC-smokinlmm said:
I guess you go strictly by the book then. Does it say to send the heads out for inspection when changing a HG?

This is a question, not shit talking....
Click to expand...

How many forums do you need to get banned from before you learn to STFU???

So many people have disproved what you say, not just the 2 you always want to call out and :baby: about....

You spew all this nonsense on all the forums yet you don't even work on your own truck???:rofl:
 
adeso

adeso

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Clean the cylinder head of all foreign material. Do not use a motorized wire brush on any gasket sealing surface. Clean the threaded holes. Clean the injector bores using EN-47909 . Inspect the cylinder head for the following:
<TABLE dir=ltr border=0 cellSpacing=0 width=401><TBODY><TR><TD vAlign=top width="7%">•

</TD><TD vAlign=top width="93%">Damage to the gasket surfaces

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=452><TBODY><TR><TD vAlign=top width="7%">•

</TD><TD vAlign=top width="93%">Damage to the threaded bolt holes

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=375><TBODY><TR><TD vAlign=top width="8%">•

</TD><TD vAlign=top width="92%">Cracks in the exhaust ports

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=490><TBODY><TR><TD vAlign=top width="6%">•

</TD><TD vAlign=top width="94%">External cracks in the water chamber

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=413><TBODY><TR><TD vAlign=top width="7%">•

</TD><TD vAlign=top width="93%">Cracks between the valve seats

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=618><TBODY><TR><TD vAlign=top width="5%">•

</TD><TD vAlign=top width="95%">Restrictions in the intake or exhaust passages

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=580><TBODY><TR><TD vAlign=top width="5%">•

</TD><TD vAlign=top width="95%">Restrictions in the cooling system passages

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=503><TBODY><TR><TD vAlign=top width="6%">•

</TD><TD vAlign=top width="94%">Rusted, damaged or leaking core plugs

</TD></TR></TBODY></TABLE>
Measure the cylinder head for warpage with a straight edge and a feeler gauge. A cylinder head block deck with warpage in excess of 0.075 mm (0.0030 in) within a 516.5 mm (20.33 in) area must be replaced.



​

Measure the cylinder head exhaust manifold deck for warpage. A cylinder head exhaust manifold deck with warpage in excess of 0.1 mm (0.0039 in) within a 453 mm (17.83 in) area must be replaced.



​

Measure the cylinder head intake manifold deck for warpage. A cylinder head intake manifold deck with warpage in excess of 0.3 mm (0.011 in) within a 493 mm (19.41 in) area must be replaced.




​

Measure the valve spring tension using J 9666 . Replace the valve spring if the valve spring tension is less than 275 N (61.8 lb) at 41 mm (1.6142 in)




​

Measure the valve spring for squareness. Replace the valve spring if squareness is beyond 2.0 mm (0.0787 in).




​

Measure the valve spring free length. The production free length is 56.6 mm (2.2283 in). Measure the valve stem to guide clearance.​
<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="10%">11.1.

</TD><TD vAlign=top width="90%">Set a dial indicator to the valve stem measuring point.

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="5%">11.2.

</TD><TD vAlign=top width="95%">Move the valve stem from side to side while reading the total movement on the dial indicator. If the measured valve exceeds 0.20 mm (0.0079 in), replace the cylinder head.

</TD></TR></TBODY></TABLE>





​

If the valve stem to guide clearance is over 0.25 mm (0.098 in) for the exhaust valve guides or 0.20 mm (0.0079 in) for the intake valve guides, the cylinder head must be replaced. Inspect the valves for the following:​
<TABLE dir=ltr border=0 cellSpacing=0 width=221><TBODY><TR><TD vAlign=top width="13%">•

</TD><TD vAlign=top width="87%">Bent valve stem

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=247><TBODY><TR><TD vAlign=top width="12%">•

</TD><TD vAlign=top width="88%">Scored valve stem

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=311><TBODY><TR><TD vAlign=top width="10%">•

</TD><TD vAlign=top width="90%">Worn valve key grooves

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=221><TBODY><TR><TD vAlign=top width="13%">•

</TD><TD vAlign=top width="87%">Pitted surfaces

</TD></TR></TBODY></TABLE>






​

Measure the valve margin. The intake valve production margin is 1.2 mm (0.0472 in) and the service limit is 0.88 mm (0.0346 in). The exhaust valve production margin is 1.0 mm (0.0394 in) and the service limit is 0.73 mm (0.0287 in). Replace the valve if the valve margin is below the service limit.






​

Measure the valve depression.​
<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="12%">15.1.

</TD><TD vAlign=top width="88%">Insert a new valve into the cylinder head (1).

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="5%">15.2.

</TD><TD vAlign=top width="95%">Use a depth gage or a straight edge to measure the valve depression from the cylinder head gasket surface (2). The intake valve depression is 0.6 mm (0.0236 in) and the service limit is 2.5 mm (0.0984 in). The exhaust valve depression is 0.9 mm (0.0354 in) and the service limit is 2.0 mm (0.0787 in). Recondition the valve seat if the valve depression is above specifications.

</TD></TR></TBODY></TABLE>





​

Measure the valve contact width.​
<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="4%">•

</TD><TD vAlign=top width="96%">Inspect the valve contact area for roughness or unevenness.

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="3%">•

</TD><TD vAlign=top width="97%">The intake valve contact width is 2.1 mm (0.0827 in) and the service limit is 2.5 mm (0.0984 in).

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="3%">•

</TD><TD vAlign=top width="97%">The exhaust valve contact width is 2.1 mm (0.0827 in) and the service limit is 2.5 mm (0.0984 in).

</TD></TR></TBODY></TABLE>

<TABLE dir=ltr border=0 cellSpacing=0 width=623><TBODY><TR><TD vAlign=top width="4%">•

</TD><TD vAlign=top width="96%">Recondition the valve seats to bring the contact width into specifications.

</TD></TR></TBODY></TABLE>
 
adeso

adeso

wait, what?
May 30, 2011
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meh copy and paste didn't work so well, but you get the idea. While the average shade tree mech with some time can get the heads on and off, most don't have the know how or tools to correctly check the heads, esp when a small shop can do it for a few bucks
 
NC-smokinlmm

NC-smokinlmm

<<<Future tuna killer
May 29, 2011
5,198
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At Da Beach
Gp184 said:
You spew all this nonsense on all the forums yet you don't even work on your own truck???:rofl:
Click to expand...

Don't believe everything you read on the Internet. Only things on my rig that I didn't do are my tranny and turbo install...

And I have forgotten more than you will ever know...
 
adeso

adeso

wait, what?
May 30, 2011
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I'm guessing you have never done a set of heads either :rofl:

This is a low BS website, start saying stuff that isn't right and you will get jumped on, a large percentage of people here have built their own engines to some extent (I had a shop machine and balance mine but bolted it together, many people on here build their entire engine)
 
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