Need advise in fixing a block

[WPeschel]

Could you just oring the head???

 

[TCluff]

have the block decked at a local machine shop, cheapest most reliable repair you can do, anything else will eventually come back and haunt you... .....

 

[LMcCary]

Is that a crack in Number five cylinder? Any way if not, Deck block if can feel that groove with your finger.

LMcCary

 

[PHeadings]

What made you use the 400 sand paper , I'm not sure if thats it or not , but the headgasket manufacture wants a very specific surface for the gasket , there is a surface grading system for machined surfaces , they do not want a surface thats either too soothe or too ruff .

400 grit as per the Service Manual.

 

[JFaughn]

Good to know .

 

[JHardwick]

400 grit as per the Service Manual.

You didn't remove metal at 400 grit by hand :-laf... ..... I see a patched up motor set to blow on the "For Sale" market.



I never done engine machining, but I did 20+ years industrial machining ... ... ... ... flatness and RMS are of significant importance in gasket sealing properties.

 

[PHeadings]

You didn't remove metal at 400 grit by hand :-laf... ..... I see a patched up motor set to blow on the "For Sale" market.



I never done engine machining, but I did 20+ years industrial machining ... ... ... ... flatness and RMS are of significant importance in gasket sealing



properties.

You never Done English very well either, Why don't you take your sarcasm somewhere else.

 

[LMcCary]

Cali 600



How deep is the groove? Can you feel it with the finger nail? Or is it less than the thickness of a news paper page? Or you can take a stright edge and place it over the groove, shine a light (Brite flash Light) and see if there is any light showing on the other side of the straight edge in the groove area. I little or no light, it is probably OK.

On the sand paper grit that everyone is whinning about, use a good shop vac on the deck, around the cylinder walls, close to the pistons and the oil passage area. Then wipe every thing down with a lint free rag. When installing the new gasket, be sure that deck is free on any debris, including lint. Follow torque specs very close.



LMcCary

 

[PHeadings]

If you read above it turned out to be a heavy carbon deposit. The head was not as lucky. Thanks for the advise.

 

[jwilliams3]

If it was just carbon build up I would use a long (8") honing stone. That way it will evenly remove material and not create a focused low spot.

 

[lmills]

I ran into something similar with mine when it blew the gasket. It did not take very long to cause a build up like what was shown in the pictures. It also turned out to be just a slight carbon build up. That was over 30,000 miles ago and the truck has been beaten severely and held up. :-laf Personally, I wouldn't sweat it. Just be very clean and meticulous with the r & r