Revised Steel Cylinder Head Gasket for Volvo D20, D24 Engines - Engine Builder Magazine

Revised Steel Cylinder Head Gasket for Volvo D20, D24 Engines

The new gasket is made of steei and uses the existing part number. The new steel gasket can be identified by the number of holes – one, two or three – as shown with arrows in the illustrations. The holes indicate the thickness of the gasket

Height of the piston above the surface of the cylinder block:

mm              0.67-0.60,  0.81- 0.90,  0.91-1.02

Gasket,             1,                 2 ,                 3

# of holes

Thickness     1.50mm,     1.55mm,      1.60mm

P/N             9146007-1,  9146008-9,  9146009-7

Use the following torques and tightening sequence for the new steel cylinder head gasket. Use new bolts when installing. Washers do not need to be replaced. Lubricate degreased components prior to installation.

Note: If there Is coolant and/or oil present in the bottom of the hole, proper torque will be achieved. However, the bolt head will not be bottomed. Blow clean the bolt holes placing rag around air nozzle to prevent splash back. Run a bottoming tap or thread chaser thru hole to clean threads, blow clean again. Lubricate underside of bolt heads, washers and threads lightly with engine oil before installation.

The following tightening torques apply to oiled screws and nuts.

Tighten in four stages:

Stage 1 =  30 ft.lbs (40 Nm)

Stage 2 =  44 ft.lbs (60 Nm)

Stage 3 =  85 ft.lbs (75 Nm)

Stage 4 = protractor tighten 180° NOTE: Angle torque in one continuous movement.

The new steel cylinder head gaskets do not need retorqued.
The above P/Ns are the same as the earlier gaskets. The earlier gasket can be identified by the one, two or three notches 
	</div><!-- .entry-content -->

		<footer class=


You May Also Like

LTR Engine Build

This Late Model Engines build is centered around Concept Performance’s new LTR block, which is the first aftermarket as-cast aluminum Gen V LT block. 

The Chevrolet LT engine family from General Motors is rooted in the early ‘70s, when the LT1 was featured in the Corvette and Camaro Z28. After a 20-year hiatus, GM reintroduced the platform in the early ‘90s. The “LT1 350” came out in 1991, and was distinct from the high-output Gen I LT1 of the 1970s. It displaced 5.7L (350 cu in), and was a two-valve per cylinder pushrod design. The LT1 used a reverse-flow cooling system, which cooled the cylinder heads first, maintaining lower combustion chamber temperatures and allowing the engine to run at a higher compression than its immediate predecessors.

LS Intake Manifolds

LS swaps are popular for many reasons, but there are a lot of variations and details to sort through – more of them than you may expect – and many of them are associated with the intake manifold.

LS Cylinder Heads

The LS engine is known for its cylinder heads, and there are tons of options available to upgrade the factory components.

Choosing the Correct Block for Your LS Engine Build

Whether you’re scouring junkyards, ordering cores, investigating factory options, looking at aftermarket cast iron or aluminum blocks, or spending big bucks on billet LS blocks, you’ve probably noticed it’s been harder to find exactly what you want for the foundation of your LS build than it historically has.

Open Loop/Closed Loop and Learning

Closed-loop control can be programmed to either add or subtract up to a certain percentage of fuel in order for the engine to reach the target air/fuel ratio.

Other Posts

Shop Solutions January 2023

Next time you have set of large journal small block Chevy connecting rods to resize, consider honing the big ends of them for a +.002” outside diameter bearing that the LS engines with fracture cap rods use.

Shop Solutions December 2022

Everyone misses occasionally, and this helps avoid dents and damage.

Jesel Certified Performance Rebuilds

Engine components are serious investments for any racer and maintaining that investment could be the difference between winning a championship and losing it.

Going the Extra Mile with Cylinder Head Porting

It’s not just the port work alone that creates spectacular cylinder head performance. The most critical areas of a cylinder head are those which pass the most air at the highest speed and for the longest duration. Your bowl area, the valve job, the throat diameter, and combustion chamber are all crucial parts.