07-04-2020, 11:29 AM
It's about 45 years since I last de-glazed a cylinder bore and I suspect the technology has moved on a bit in the interim. I have been recommended a "bobble hone", which has carbide blobs on the end of flexible arms, like an industrial strength bottle brush.
I have found these in the UK - https://www.pacehigh.co.uk/bc-style-flex-hone
How do others achieve the ideal 45° cross hatch in their cylinders, and if you use a bobble hone, what grit do you use?
My engine was rebuilt professionally around ten years but less than 1000 miles ago, and I am fairly sure the PO allowed the bores to glaze by leaving it ticking over. Compressions are all fairly even at around 95psi, but it smokes and burns oil. I have it apart as I'm having to replace the camshaft bush bolt, so it's not much more effort to take the pistons out "whilst I'm in there".
Hope this finds everyone, safe, healthy and not climbing the walls.
Colin
I have found these in the UK - https://www.pacehigh.co.uk/bc-style-flex-hone
How do others achieve the ideal 45° cross hatch in their cylinders, and if you use a bobble hone, what grit do you use?
My engine was rebuilt professionally around ten years but less than 1000 miles ago, and I am fairly sure the PO allowed the bores to glaze by leaving it ticking over. Compressions are all fairly even at around 95psi, but it smokes and burns oil. I have it apart as I'm having to replace the camshaft bush bolt, so it's not much more effort to take the pistons out "whilst I'm in there".
Hope this finds everyone, safe, healthy and not climbing the walls.
Colin