ford 2.3 engine help

[mike kline]

I am new to mini stock class was wondering what the difference is in running 5.7 rods on a 2.3 crank compared to running 5.7 rods with a 2.5 crank are the rods and pistons different because I have a good set but I am not sure if they were on a 2.3 crank or a 2.5 crank. thanks

[Big E tech]

I am new to mini stock class was wondering what the difference is in running 5.7 rods on a 2.3 crank compared to running 5.7 rods with a 2.5 crank are the rods and pistons different because I have a good set but I am not sure if they were on a 2.3 crank or a 2.5 crank. thanks

Yes, the pistons are different for the two cranks...

If you can measure from the wristpin hole to the flat top surface of the piston, the 2.3 crank should measure roughly .646", while the pistons for the 2.5 crank should measure .496"'ish...

That's not the compression height, just the easy way to measure them from the top of the pin bore to the deck of the piston...

[mike kline]

thank you big E tech, what is the difference in the stroke of running 2.3 with 5.7 rods to running 2.5 with 5.7 rods thanks

[car62]

The difference between a 2.3 stroke (3.125) and a 2.5 stroke (3.325) is .200

[return to dirt]

the info everyone gave you is good but can be confusing. if the wrist pin is below the oil ring then it is probably a 5.2 rod(2.3). if the wrist pin is in the area of the oil ring then it is probably a 5.7 rod(2.3) piston.

olin

[let-r-eat]

A 5.7 rod is a 5.7 rod whether it is used in a 2.3 or a 2.5. The piston is different as mentioned above.

[mike kline]

thanks I know they are 5.7 rods I just wasn't sure what the pistons were for a 2.3 or a 2.5 by what big E tech said they are for a 2.3 crank witch is what I have. thanks again