Deck height, What went wrong? Options

[DavidSweden]

I am rebuilding my 2.0 engine

This evening I installed #4 cylinder & piston (with new rings). I then tightened the cylinder down onto the case to measure the deck height.
The deck height came to 0.2mm which is 0.008". as I understand it the deck height should be about 1mm (0.04").
I have installed new crank bearings, the piston and cylinder are original, the shim under the cylinder is the same thickness as the original shim.

The deck height should be the same as before the rebuild shouldn't it? Anyhow the deck height seem very small.

Advice appreciated

[ThePaintedMan]

Cylinders in the same order? As said before, was the case machined? There are lots of variables.

[DavidSweden]

Cylinders in the same order? As said before, was the case machined? There are lots of variables.

Thanks for all the replys.

The case has not been machined, I have installed new rod bearings and crank bearings. I am holding down the cylinder with 2 steel plate on each side, similar to the pic Stugrays posted. I am using a feeler gauge to measure the deck height and a dial to get to top dead.

I will post some pics of the arrangement within the next few days.

Is there a minimum deck height to avoid the piston hitting the valves?

Thanks again

[Mark Henry]

Cylinders in the same order? As said before, was the case machined? There are lots of variables.

Thanks for all the replys.

The case has not been machined, I have installed new rod bearings and crank bearings. I am holding down the cylinder with 2 steel plate on each side, similar to the pic Stugrays posted. I am using a feeler gauge to measure the deck height and a dial to get to top dead.

I will post some pics of the arrangement within the next few days.

Is there a minimum deck height to avoid the piston hitting the valves?

Thanks again

.040" minimum
You should still do a proper CR check, you just have to figure out the Head CC and then there are CR calculators on the net.

Seen it before, the rods did you have the big end and small end bushings done?
Material was likely removed from one mating surface of the rod and cap then machined back to size, bush may also be a hair offset, making a slightly longer rod.
The new cylinders may also be a hair shorter.

You can stack up to 3 shims under the cylinder. You can get thicker shims from EMW and custom made shims from RIMCO.