October 6, 2024
Auxillary scavenge pumps I have had three engines with auxiliary oil pumps, that is, an extra scavenge pump to return oil from the bottom bevel housing. To make this modification, […]
Foreword
There is no doubt in my mind that the leading expert in all matters regarding the Mkviii KTT is Ivan Rhodes. He has been most forthcoming with help, advice and information. I can most earnestly recommend his book Velocette – Technical Excellence Exemplified to all those who have not yet read it. A great deal of technical information is contained in this book.
October 2006 There were no manuals issued for the Mkviii KTT’s, only a couple of information sheets with timing figures, tyre pressures, carburettor and general settings etc. They are reproduced on this website.
I have commenced the task of writing a series of articles which I hope will form the basis of a manual. I am well aware at the outset that there are others better qualified to do the job but someone has to start somewhere. Many of those who had expert knowledge are no longer with us and I feel that it is important to record information that will be useful to future owners. If anyone reading the articles believes them to be wrong and lets me know in what respect, I will be grateful.
I have resisted the temptation to use an edited version of the KSS manual issued by Veloce, choosing instead to use my own words. I have been mindful of the fact that these engines are all at least sixty years old and have tried to cater for where they might be showing their age.
The first article is about the dismantling and rebuilding of the ‘bottom end’. I will shortly add a piece on the flywheels and then the bottom bevels. I intend to cover all aspects of the engine in this manner.
October 6, 2024
Technical Information – Instructions for KTT Models MkVII (Engine No. KTT700 onwards) and MkVIII (Engine No. KTT800 onwards) * Note : with modern low expansion valve material 21-4N and the […]
October 8, 2024
Ignition Timing on th Mkviii KTT, by Peter Miles The published information on the Mkviii gives an ignition setting of 30 degrees BTDC. The figure for a Mkvii is 32 degrees […]
October 10, 2024
Click here to download this page as a Word file. Magnesium castings require protection from atmospheric attack; the factory soaked the castings in a Dichromate bath. The castings were then […]
October 10, 2024
Cylinder Head – Removal, overhaul and replacement To remove the cylinder head from the engine, firat remove the exhaust pipe, carburettor and the spark plug. Remove the oil pipe that […]
October 10, 2024
Overhaul of Mkviii engine. Dismantling and re-assembling the ‘bottom-end’ When the cylinder head, barrel and piston have been removed, along with the vertical drive shaft, outer and inner timing cover, […]
October 10, 2024
Overhaul of Mkviii engine Flywheel Assemblies Foreword: It is not uncommon for engines to be re-built using flywheel assemblies that have not been adequately checked. There are few things that […]
October 10, 2024
Overhaul of Mkviii engine Meshing the bottom bevels The vertical bevel should be inspected for wear or damage to the teeth, play in the bush and end-float. It is worth […]
