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Top deck clearance

 
 

Here we show how to calculate the following:

  1. Block height
  2. Crankshaft stroke
  3. Connecting rod length
  4. Piston compression height
  5. Piston to top deck distance
  6. Download calculator

This is basic information for choosing the right engine components.

You can easily input your own values below to get a result. Keep in mind that small deviations in measurements can lead to large deviations in function later on. Therefore, make sure to enter the correct measurements!

For example, a block may be top-decked (shaved), which should be included in the calculations of block height for an accurate calculation.

 
 

1 ▼

Block height

Calculate block height:

(Crankshaft stroke / 2) + Connecting rod length + Piston compression height + Block deck clearance (if the piston sticks above the deck height, subtract this value instead to get block height)

 
 

2 ▼

Crankshaft stroke

Calculate crankshaft stroke

Block height - Piston compression height - Connecting rod length - Block deck clearance (if the piston sticks above the deck height, add this value instead to get the crankshaft stroke) = Half of the crankshaft stroke (x2 to get the full crankshaft stroke)

 
 

3 ▼

Connecting rod length

Calculate connecting rod length

Block height - (Crankshaft stroke / 2) - Piston compression height - Block deck clearance (if the piston sticks above the deck height, add this value instead to get the crankshaft stroke) = Connecting rod length

 
 

4 ▼

Piston compression height

Calculate piston compression height

Block height - (Crankshaft stroke / 2) - Connecting rod length - Block deck clearance (if the piston sticks above the deck height, add this value instead to get the crankshaft stroke) = Piston compression height

 
 

5 ▼

Piston to top deck distance

Calculate block deck distance

Block height - (Crankshaft stroke / 2) - Connecting rod length - Piston compression height = Block deck distance up to or above the top deck of the block

 
 

6 ▼

Download calculation

To easily calculate the above information, you can use our calculator, which will directly provide you with the data you're looking for.

Download here

 
 

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