A while ago now i stripped my Z900 A4 engine for full rebuild and vapour blasting, whilst everything was i bits decided the cylinder head needed some work, new valve guides, head skim and to assess minute cracks ( which forum advised was normal) etc.
I also noticed that 1 of the plug threads had been replaced with a helicoil, to make matters worst part of the coil was stood proud, in order to get the plug to seal the prev owner had put 2 washers on the plug to try to stop leakage. I went down the routw of having the helicoil removed and a timecert put in by the engineering, they did a superb job and sorted the cracks out too.
Now in my case the head was already removed, whilst im sure its possible to do with head in place, personally i wouldnt risk it for fear of swarf getting in.
Just my thoughts but a head gasket set is a lot cheaper then a full rebore if swarf did get in! Its also an oppertunity to check valves, guides etc condition whilst apart.
Hello Guest User,
Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.
To access these 'Registered Users Only' areas simply register and login.
Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.
To access these 'Registered Users Only' areas simply register and login.
1976 Z900 A4 Plug Thread
Moderators: KeithZ1R, chrisu, paul doran, Taffus
Who is online
Users browsing this forum: No registered users and 29 guests