crosshatch in bore

[68442]

I have a high mile 4g63 and I was surprised to see crosshatches in the cylinders at 220k. Is this typical or was it at sometime rebuilt?

 

[xveganxcowboyx]

It seems to be fairly common. They don't wear terribly. Why did you take it apart in the first place?

 

[silver bullit]

May have been rebuilt take a pic.

 

[Staytuned]

I would say rebuilt at some point. My walls had no cross hatching on the front and back of the cylinders at 140,000 kms

 

[68442]

Wow, took me that long to do this. Here are 2 pics. I think rebuilt, or another example of the amazing 4g63. Core plugs look recent.

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[delta448]

That block looks way too clean to not have been rebuilt. I only have a little over 80k on mine and it's completely covered in grime. Can you still feel the crosshatching scores with your fingernail, or are they just trapped in the cylinder's glaze? It's not unlikely to still see crosshatching with high mileage, but if you can still feel it, it means it's barely even been broken in.

 

[68442]

Yea, you can feel them. Should've kept that car, cleaner than the 130k car.

 

[matt98eclipse]

Heres what mine looked like with 107,000 miles.

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[GSX93DSM]

That motor has been gone through. It looks like that put new freeze plugs in. The cylinder walls looks way to good to have those many miles.

 

[VETTE_50_TH]

That car looks like it was ran for 2k miles. Looks very very clean inside.

James

 

[Black95TSIawd]

my stock 7-bolt had 148k when I took the head off to be build and all of the cylinders still had the cross hatch in it.

 

[68442]

I'll take it apart this winter sometime and check other things. When it was in the car the compression was really good also.

 

[matt98eclipse]

My bet is it has been rebuilt sometime or anouther. How long have you had the car?

 

[68442]

I bought it from the original owner's son, had 225k showing on the odm.

 

[Grimis]

looks like mine, when i pulled it apart, bought it at 111k, and then oil pump issue at 120k, so looks to be rebuilt.

 

[droppinbottom]

I purchased my car with just short of 240k on the odometer from the original owner. To our surprise when I pulled the motor the cross hatching still looked fresh and the motor had never been gone into.

 

[68442]

Well unless I find another good running motor this one has been called up for duty. The motor in my car with 140k ended up killed by detonation and some piece of metal. It's cylinder walls are baby smooth at 140k.