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1988 BMW 325 Base Sedan
 
BMW Home > 1988 BMW 325 Base Sedan > EngineCylinder Head & Valvetrain 

Cylinder Head & Valvetrain

- Page 4

Rocker Arms and Shafts

Rocker arms transfer the energy from the camshafts and/or pushrods, to the valves. One end is moved by the camshaft and/or pushrod, while the other side moves the valve stem - physically moving the valve up and down.
Rocker Arms
The rocker arm is used to actuate the opening of either the intake or exhaust valve. It is essentially a pivot operated by either the camshaft lobe or a pushrod.
Rocker Arm

Rocker Arm  
 
[ More Info ]

  (12 per car, sold individually)

Genuine BMW
Brand Rating
$54.25


Valve Adjusting Bolt
Rocker Shafts
Rocker shafts are the cylindrical rods that rocker arms rotate around.
Rocker Arm Shaft - Intake and Exhaust

Rocker Shaft Plug In Head

Rocker Shaft Plug

Cylinder Heads

Upgrading your cylinder heads is a great way to improve performance. You can decrease weight and improve flow. The cylinder head is an assembly consisting of the intake and exhaust valves, valve guides, valve springs, camshaft, and spark plugs. It is mated to the top of the cylinder, and forms the combustion chamber.
Cylinder Head
Cylinder Head  
 
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Note: Cyl. Head comes w/ guides and studs

AMC New
Brand Rating
$935.75
Cylinder Head  
 
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Note: Complete Head w/ Valves

AMC New
Brand Rating
$964.25

Cylinder Head Bolts

When doing a rebuild, or replacing the head, you should always replace the bolts holding the head to the block, as they have a tendency to stretch after they are torqued, which can cause numerous problems including blown head gaskets, loss of compression, and possible engine damage if a bolt head breaks off inside the valve train.
Cylinder Head Bolt Set
BMW Home  >  1988 BMW 325 Base Sedan > Engine  >  Cylinder Head & Valvetrain 

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Browse Cylinder Head & Valvetrain for all 3-Series E30 (1983-1991) vehicles

Page last updated: Mon 11/13/2017 1:23:22 PM
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