what condition are these pistons in? (pic)

[MattTheBat83]

this engine is being replaced but i was kind of surprised the way the tops of the pistons looked... what happened to them?


View attachment 463763

 

[83Mustang427TT]

its normal carbon

 

[jstang209]

a little something called combustion, i hope u didnt think there were still going to look brand new hehe

 

[COP TZER]

Looks like 120,000-130,000 miles of abuse!!!!

 

[83Mustang427TT]

a little something called combustion, i hope u didnt think there were still going to look brand new hehe

I think he did

 

[Tonys96Cobra]

Just scrape it off and call er good!!!!

 

[86bluecobra]

don't forget to change that oil. i don't think i have seen green oil on the top of pistons before (lol). be very bad to not change it after all that coolant gets into it.

 

[fidstang]

Looks like someone forgot to drain the coolant from the block. LOL! Looks like mine right know, only mine has a garbage bag over it. I'm waiting for my isky cams piston notching tools to come in.

 

[86bluecobra]

Looks like someone forgot to drain the coolant from the block. LOL! Looks like mine right know, only mine has a garbage bag over it. I'm waiting for my isky cams piston notching tools to come in.

why are you waiting for a piston notcher?
or is it another car possible a 85 or 86 that you tore down?

 

[fidstang]

I am putting Edelbrock RPM's with 2.02 valves in it. My exhaust valve clears with .1402" . But, stock notches with the bigger valve don't mix. I only have .036" of clearance in the middle and I'm hitting off the edges of the eyebrows. Pretty standard I think unless their valve angle is changed from stock. IE: twisted wedge, canfield and so on! I needed to remove some weight with the supercharger going on. So I had to move to aluminum. Next year it will be a forged bottom rebuild (unlike my last short block that only had forged piston.RIP!) and then a good K member?A arms/ coil over setup. Should help me drop a couple of tenths.