Hydraulic Flange Units

We have recently completed these hydraulic flange units, manufactured from mild steel the largest unit started out just short of 72KG, a hefty chunk of material.

Both these items were machined on one of our 3 axis machining centres without any 4th axis, during machining we used a series of tools including roughing cutters, finishing cutters, chamfer mills, spot drills, carbide drills and 1/4 BSP thread formers, we opted for thread formers over thread cutting to produce a longer lasting thread, threads created by forming are also stronger than cut threads.

Hydraulic Flange Hydraulic Flange Units

Vauxhall Astra 2.0 VXR Engine Block Modification

We have been developing a block modification for the Vauxhall Astra (H) 2.0 Turbo VXR Z20LET Engine to strengthen the cylinder bores by converting the open deck block into a closed deck block for a customer who has recently had two engine block failures as a result of higher power outputs. The latest engine block failure was built at a so called “reputable” tuning shop specialising in these models, unfortunately for customer the block failed just weeks after being built and re-mapped.

After inspecting the failed block it was more than obvious that the block needed to be strengthened in the water jacket area. We set about this by accurately Laser Scanning the engine block face to pick up on the all the features on the block face and then we introduced the scan into our CAD software, from there on we begin to work on the design of the part to strengthen the block. Initially we were looking at a “part” wedge design but after some consideration we opted for a full wedge, as we believed this would offer superior strength and also have less possibility of moving after fitment.

Our next step was to machine the engine block to match that of the new parts to be inserted, machining slightly undersize to produce a interference fit.

To begin we open up the coolant ports surrounding the liner, the reason for this is to give a machined finish as currently its a cast finish so is rough and secondly to ensure the profile matches that of the wedges to be inserted perfectly.

About This Site

Welcome to Halo Precision Engineering, we are precision cnc machining company based in Chesterfield, Derbyshire.

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What we offer

  • CNC Machining

  • Milling

  • Drilling

  • CAD CAM

  • Batch Work

  • Nationwide Service

  • All Workmanship is Guaranteed

  • Bead Blast Surface Finishing

Contact Info

Unit 1 Fan Road, Staveley, Derbyshire, S43 3PT

01246 281543

Mon - Fri: 9:00am - 6:00pm
Saturday: 9:30am - 2:00pm Sunday: Closed

Copyright 2018 Halo Precision Engineering LTD ©  All Rights Reserved

Company Registration Number: 11667662, VAT Registration No. GB338125508