cometic head gaskets

[BillK]

Originally Posted by bry-war

Bill,
the difference in pattern and where the combustion escaped.
.
Bryce

Bryce,
I was thinking about this a little. Do you have a picture of the entire deck surface in one shot ? Did it look like it was done in two different cuts ?? I have seen some Dart blocks come with a pretty terrible finish from the factory that almost looks like they made two passes with different cutters. I does not matter because I am going to surface it anyway but I wonder if yours is just the factory finish ?

Just thinking out loud

[Rich Biebel]

Milling machines like a Storm Vulcan 85 B can leave a poor finish if the carbide cutters are not kept sharp and or the speed is too fast.

You hit some weld spots on factory blocks and just general wear causes them to leave a "file finish"after a while.

I ran one for years.....

I never got to use the CBN cutters and we never had a grinder....

Wheel had to be crated up and sent out or replace your own cutters but that was usually not a good scenario.......all it took was one cutter to be slightly high or low....

I have an old Van Norman rotary broach at home and it's a real dinosoar.....it needs to go to the scrap pile....

[BillK]

Originally Posted by Rich Biebel

replace your own cutters but that was usually not a good scenario.......all it took was one cutter to be slightly high or low....

I remember those days well. I used to spend hours getting the new bits set up perfect. So glad for modern technology

[carl hinkson]

When I deck my blocks I actually get a back cut which is the flattest surface and most tub grinders have lead built into them which when the head is tipped its not as flat as most think.

[bry-war]

Originally Posted by BillK

Bryce,
I was thinking about this a little. Do you have a picture of the entire deck surface in one shot ? Did it look like it was done in two different cuts ?? I have seen some Dart blocks come with a pretty terrible finish from the factory that almost looks like they made two passes with different cutters. I does not matter because I am going to surface it anyway but I wonder if yours is just the factory finish ?

Just thinking out loud

Bill,
I do not have an overall pic of the decks but it was definitely just one pattern. No return travel pattern or variance other than how it looked like an angular path as mentioned before. If I recall correctly, the deck height was 9.804. seems like not alot left for a factory cut. I will be running some Fel-pro 1057 (wire ring composite) gaskets for this go-round.
Thanks
Bryce