Engine Machining Services
You can order online where available, and for major parts, packages or workshop services, we recommend contacting Oztrack first to confirm suitability and any vehicle-specific requirements.
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Engine Machining in Penrith, Sydney
LS Engine Machining Services
Oztrack offers in-house LS engine machining for private customers, workshops and engine builders.
Send us a bare block, short motor or complete engine. We can complete as little or as much of the machining and assembly as you need. Select the required machining services in the options above.
CNC Bore, Torque Plate Hone and Surface
One of our main LS machining packages includes CNC boring, torque-plate honing, block surfacing, hot washing and new cam bearings.
The block is measured first so we can determine the required bore size, piston clearance and whether the block can safely be machined oversize.
You can select either machining only or the package that also includes stock replacement pistons for 6.0L or 6.2L engines with the rings gapped.
Comec CNC Block Machining
Our Comec CNC equipment allows us to accurately machine LS engine blocks in our own Penrith workshop.
Keeping the machining in-house means we can inspect, measure and machine the block as part of one controlled process.
Depending on the engine, machining can include cylinder boring, block surfacing and preparation before final honing.
Torque Plate Honing and Bore Measuring
Final bore preparation is critical to ring seal, piston clearance and engine life.
We use precision bore measuring equipment throughout the machining process so the final cylinder size can be matched to the pistons being used.
Torque-plate honing simulates the distortion created when the cylinder heads are bolted to the engine block.
This allows the cylinders to be finished closer to the shape they will have when the engine is fully assembled.
Measure First. Machine What the Block Actually Needs.
Bore wear, previous damage and factory core shift determine whether an LS block needs honing, boring or sleeving. We measure the block before deciding how far it can safely be machined.
LS Block Sleeving
Some LS blocks cannot safely be bored oversize.
A block may have cylinder damage, excessive wear or core shift that leaves insufficient cylinder-wall material for conventional boring.
In these cases, sleeving allows the damaged or unsuitable factory cylinders to be replaced with precision-machined sleeves.
Melling Sleeves
Melling sleeves are available for LS blocks requiring all eight cylinders to be sleeved. Select this option in the machining calculator above.
Powerbore or LA Sleeves
Powerbore or LA sleeves are also available for performance LS engine combinations. Select this option in the calculator above for current pricing.
LS Crankshaft Linishing
Crankshaft journals can develop marks or surface imperfections during engine use.
Linishing improves the journal surface finish where the crankshaft remains within usable specifications.
The crankshaft should be inspected and measured before deciding whether linishing alone is suitable.
LS Cam Bearing Supply and Installation
New cam bearings can be supplied and installed during the machining process.
Cam-bearing installation is already included in some of the larger block machining packages, or it can be selected separately using the options above.
Piston and Ring Preparation
Ring Gapping
Piston-ring end gaps need to suit the engine combination and intended use. We can measure and gap the rings before engine assembly.
Flycut Replacement Pistons
Flycutting adds additional valve clearance to the piston where required for larger camshaft combinations.
Whether flycutting is required depends on the actual camshaft, cylinder-head and piston combination.
Short Motor Assembly
If you do not want to assemble the short motor yourself, we can install the crankshaft and pistons using bearings supplied as part of the job.
This option suits customers and workshops who want the critical bottom-end assembly completed after machining but intend to finish the remainder of the engine themselves.
LS Cylinder Head Services
Fit Dual Valve Springs
We can install dual valve springs into your supplied LS cylinder heads for performance camshaft combinations.
Shave LS Cylinder Heads
LS cylinder heads can be machined where required to restore the sealing surface or alter chamber volume for a specific engine combination.
Engine Component Hot Washing
We can hot wash related engine components including cylinder heads, sump, covers and other suitable parts.
Cleaning parts during an engine rebuild helps remove old oil, deposits and machining residue before final assembly.
Engine Machining for Other Workshops
You do not need to book a complete engine rebuild with Oztrack.
Workshops and engine builders can send us blocks, crankshafts, cylinder heads or complete engines for selected machining work.
We can complete the machining and return the components to you for final assembly, or complete further assembly work if required.
Engine Machining Australia-Wide
Engine blocks and components can be delivered to our Penrith workshop or freighted to us from anywhere in Australia.
We have a forklift on site, so palletised engines, blocks and heavier components can be unloaded when they arrive at our workshop.
Contact us before arranging freight so we can confirm exactly what parts you are sending, how they are packed and what machining you require.
How the Engine Machining Process Works
Bring the block, short motor or complete engine to our Penrith workshop, or arrange freight from interstate. We have a forklift on site for unloading palletised engines and heavier components.
We inspect and measure the components to establish their condition and what machining is required.
If inspection identifies additional work such as sleeving, we can discuss that with you before proceeding.
The selected boring, honing, surfacing, sleeving, cleaning and other machining work is completed.
We can complete selected assembly work or return the machined components for you or your workshop to assemble.
Engine Machining Questions
Do I need to send the complete engine?
No. You can send a bare block, short motor, complete engine or individual components depending on the work required.
Can I send my own pistons?
Yes. We can machine and hone the block to suit the pistons being used.
Can every LS block be bored oversize?
No. Cylinder-wall thickness, wear, damage and core shift can limit how far a block can safely be bored. Some blocks need sleeves instead.
Why use a torque plate when honing?
The torque plate simulates the distortion caused by the cylinder heads being bolted to the block, allowing the bore to be finished under conditions closer to the assembled engine.
Do you machine engines for other workshops?
Yes. Workshops can send components to Oztrack for selected machining and complete the final engine assembly themselves.
Can I freight my engine or block to Oztrack?
Yes. Blocks, complete engines and other components can be freighted to our Penrith workshop from anywhere in Australia. We have a forklift available for unloading palletised engines and components.
Can Oztrack assemble the engine after machining?
We offer selected assembly services through the options above. If you require a complete LS engine rebuild, contact us about our complete engine rebuild packages.
Not Sure What Machining Your LS Engine Needs?
Tell us what engine you have, its current condition, what parts you already have and what you plan to do with the engine. We can help determine the machining work required.
For freight jobs, contact us before sending your engine or components so we can discuss the job and delivery.
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