Engine rebuild
Posted: Wed Feb 10, 2010 8:25 pm
The time has come to clean my engine as a previous owner decided that silver hammerite would be a good idea to cover up the dirt.
Also I wasn`t convinced that the camchain would be in a pretty state but found on disassembly that all is pretty good.
My engine at 32 years old has it seems never been stripped, so it was nice to be the first to delve into the depths.
I know many of you have done this before but I thought as a virgin engine stripper there may be some relevance to other novices as to the pitfalls or otherwise of a hamfisted mechanic having a go at engine disassembly / reassembly.
My normal work involves pistons of at least 225mm so this is much more delicate work than my 10lb hammer is used to.
Here is the bike on the bench.
At this point I have got the barrels and head off and all looks good so far.
The pistons were well carboned but apart from that looked really good.
The camchain gubbins were worn only on the rubber parts so I decided to replace all of these as a matter of course.
The head looked pretty good but I decided to entrust any repairs to an experienced Zedhead.
The barrels looked pretty good.
As we stand at the moment the head is with Dogs and only needed one valve guide and a skim. The rest of the engine is with Doug Cox for the vapour treatment and the carbs have been completed.
I should at this point thank Mr Cox for vapour, Mikey for polishing and zinc late, NRP for the jet kits and Jeff Saunders for the float bowl drain screws (NOS)
And me for all the rest. I should say that not wanting to spend too much money I decided to do the carb rebuild myself but found I still spent probably £200 plus so reckon that Dogs estimate of £350 means he`s working on £10 per hour which seems good value to me.
Anyway, here are the carbs all done.
That`s it so far. Mucho shopping to be done and the update, and many requests for advice, will be coming soon.
Also I wasn`t convinced that the camchain would be in a pretty state but found on disassembly that all is pretty good.
My engine at 32 years old has it seems never been stripped, so it was nice to be the first to delve into the depths.
I know many of you have done this before but I thought as a virgin engine stripper there may be some relevance to other novices as to the pitfalls or otherwise of a hamfisted mechanic having a go at engine disassembly / reassembly.
My normal work involves pistons of at least 225mm so this is much more delicate work than my 10lb hammer is used to.
Here is the bike on the bench.

At this point I have got the barrels and head off and all looks good so far.




The pistons were well carboned but apart from that looked really good.
The camchain gubbins were worn only on the rubber parts so I decided to replace all of these as a matter of course.
The head looked pretty good but I decided to entrust any repairs to an experienced Zedhead.



The barrels looked pretty good.


As we stand at the moment the head is with Dogs and only needed one valve guide and a skim. The rest of the engine is with Doug Cox for the vapour treatment and the carbs have been completed.
I should at this point thank Mr Cox for vapour, Mikey for polishing and zinc late, NRP for the jet kits and Jeff Saunders for the float bowl drain screws (NOS)

Anyway, here are the carbs all done.



That`s it so far. Mucho shopping to be done and the update, and many requests for advice, will be coming soon.