replacing head gasket questions with pictures.....

[bill302]

ok..i was showing the beginning signs of a blown headgasket after running my 12 sec pass on nitrous...so i removed the heads...in the pictures below the pistons and cylinder walls do not look like a 140,000 mile motor what do yall think?? and if it has been rebuilt how can i tell if it has been bored or not??do these look like stock pistons?? the headgasket part # removed was fel-pro f2te-6051-ca i cannot find any info on this gasket is this a stock number???i also added a pic. of the worst spot on the head gasket. and pics of heads i'm going to have the heads checked at a local machine shop and ported...thanks


cyl #1

#2

#3

#4

#5

#6

#7

#8

headgasket

pic of heads

 

[tjh566]

Yeah, those look like stock pistons, if it was bored they usually stamp it somewhere on the deck, and as for wear, the walls will usually always look fine, look at the very top of the piston walls right at the deck, there will probly be a small lip around the top, that shows you how much the walls have worn. HTH!

 

[Bosko5.0]

those exhuast valves are white. maybe running a little lean.

 

[reddy351]

It actually looks like you have a very healthy longblock. It's a little rare to see the valves colored so evenly. No evidence of oil burning, either. Put new HG's on it and go another 140k miles.

 

[blksn955.o]

my stock block with 115-120k on it still had the cross hatch down the cyls. A buddies 87 popped a HG well over 180k from a 150 shot and the cyls. still looked perfect. We even checked the top for lips and we could not tell on both our blocks. We took apart a 200k motor and it too still had the cross hatch.

Too bad my rings were shot on 2 cyl...everything else was still good.

 

[bill302]

my stock block with 150-120k on it still had the cross hatch down the cyls. A buddies 87 popped a HG well over 180k from a 150 shot and the cyls. still looked perfect. We even checked the top for lips and we could not tell on both our blocks. We took apart a 200k motor and it too still had the cross hatch.

Too bad my rings were shot on 2 cyl...everything else was still good.

ya, i can also see the cross hatch marks in each cylinder, i worked on chevys all my yonger life and i don't think i have ever seen a 140,000 chevy block with cross hatch marks still showing and most of them had a large lip at the top of each cylinder from ring wear on cylinders...

 

[GT_green_GT]

my car had 102,000 miles and it still had perfect hatch marks. Barely even a lip at the top of the bore.