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I have a 1996 Escort LX with a 1.9 liter SFI engine for which I am considering the installation of 4 new pistons, because one has been severly damaged; I have no idea how.
According to the factory manual the cylinder bore is suppose to be 82mm or 3.2300 in. across. I just completed going over them with a Fowler Dial Bore Gauge that was set up with a Fowler Caliper. The results were as follows:
At the top of the cylinder (top of piston travel):
Front to Back averaged .0007 under or 3.2293 inches across.
Side to Side averaged .0020 under or 3.2280 inches across.
At the bottom of the cylinder (bottom of piston travel):
Front to Back averaged .0015 under or 3.2285 inches across.
Side to Side averaged .0021 under or 3.2279 inches across.
For those that wonder if I set up the bore gauge correctly, I followed the following procedure:
1. I set the caliper to exactly 82mm / 3.2300 inches and
locked it in.
2. I used the #7 anvil (3.2") with the .02" spacer in the bore gauge and
then inserted the measuring head of the bore gauge between the
outside jaws of the caliper. I set the bore gauge to "0" at the point
where the needle stopped and began its return.
3. Set up like this, as I measured the cylinders and the needle began
to move, it approached and they passed over the "0" setting to the
measurements I mentioned above.
My questions are these:
1. Have I taken my measurements correctly, and if so:
2. Am I going to be able to use the stock size (red) pistons?
Thanks in advance!
According to the factory manual the cylinder bore is suppose to be 82mm or 3.2300 in. across. I just completed going over them with a Fowler Dial Bore Gauge that was set up with a Fowler Caliper. The results were as follows:
At the top of the cylinder (top of piston travel):
Front to Back averaged .0007 under or 3.2293 inches across.
Side to Side averaged .0020 under or 3.2280 inches across.
At the bottom of the cylinder (bottom of piston travel):
Front to Back averaged .0015 under or 3.2285 inches across.
Side to Side averaged .0021 under or 3.2279 inches across.
For those that wonder if I set up the bore gauge correctly, I followed the following procedure:
1. I set the caliper to exactly 82mm / 3.2300 inches and
locked it in.
2. I used the #7 anvil (3.2") with the .02" spacer in the bore gauge and
then inserted the measuring head of the bore gauge between the
outside jaws of the caliper. I set the bore gauge to "0" at the point
where the needle stopped and began its return.
3. Set up like this, as I measured the cylinders and the needle began
to move, it approached and they passed over the "0" setting to the
measurements I mentioned above.
My questions are these:
1. Have I taken my measurements correctly, and if so:
2. Am I going to be able to use the stock size (red) pistons?
Thanks in advance!
