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1987 BMW 325i Base Convertible
 
BMW Home > 1987 BMW 325i Base Convertible > EnginePistons and Cylinders 

Pistons and Cylinders

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Pistons

Piston and cylinders are a crucial part of rebuilding an engine. You will need new pistons any time you have the cylinders over bored. FYI: Pistons are a component of a reciprocating engine. The pistons ride up and down in the cylinders and are sealed tight by the piston rings. The purpose of the piston is to transfer the force from the expanding gas in the combustion camber to the crankshaft via the connecting rod. The tolerances for pistons are very precise and pistons should always be carefully inspected and measured when rebuilding an engine.
Piston (84.50 mm, +0.50 mm Over)  
 
[ More Info ]

  (6 per car, sold individually)
Note: 8.8:1 compression ratio,

Mahle
Brand Rating
$104.25


Piston Rings

Piston rings purpose is to seal the gap between the cylinder wall and piston. Piston rings wear over time and the rings should always be carefully inspected, measured or replaced when rebuilding an engine.
Piston Ring Set (83.98 mm, Standard)


Piston Ring Set (84.23 mm, +0.25 mm Over)



Connecting Rods and Hardware

Wrist Pins

Wrist Pin Bushing

BMW Home  >  1987 BMW 325i Base Convertible > Engine  >  Pistons and Cylinders 

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Browse Pistons and Cylinders for all 3-Series E30 (1983-1991) vehicles

Page last updated: Wed 12/13/2017 02:13:24 AM
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