hotstang97gt

my buddie and i decided to strip down my motor today and when we took the heads off and saw the tops of the pistons, and we havent seen any like that before. i was just wondering if they were good ones or not, also is the black stuff on top if the piston normal? he said it was but i just wanted to double check with you guys.

[IMG]local://upfiles/19439/4F412384BC284D0389482515922F7D41.jpg[/IMG]

roadrunner

looks like a flat top piston,no valve reliefs

hotstang97gt

is that bad or good?

roadrunner

Im fairly new to fords, but Ive used flat tops in high horsepower chevy engines. pop ups will give you higher compression, Im not sure if its stock or not.

ZachW04Stang

Is it an 86 mustang by any chance? Mine has flat tops but they looked a little different then that. The black stuff is just carbon buildup, its normal.

hotstang97gt

my cars a 91 but im not shure of the engine. the car was a 4cyl and the 2nd owner before me did the swap. is there any way i could tell what year the motor is by looking at the block? are these pistons stock or after market, and are they any good?

MidnightBlue5.0

Flat tops.. look normal to me ..

Tims 88GT

look almost like the ones in the motor im trying to selling, mine have valve cut out in them thoe. they are hypo pistons they are normal, i would say that motor has been rebuilt before.

TBird232ci

It looks like a standard output 5.0, which heads does it have?

hotstang97gt

yeah when i bought the car the guy told me it was rebuilt but he wasnt shure how many miles ago though. i have my moto striped down now, every things off besides water pump, rods,pistons, crank and cam. i need to fix my main and rod bearings and oil pump and pan. while im at it should i change the rings, cam bearings? i think it was burning oil when it was running befor, when im on the high way and i mash the throttle black smoke would come out.