I'm in the middle of porting my saab head and just wondering if it's a good idea to touch the valve guides at all (I don't intend on getting new ones fitted)..
I notice you have touched them slightly, but in the cnc one it has totally wiped them out..
I have finally sorted a permanent solution to the coil pack extensions, I simply fitted another small spring inside the extension to allow positive pressure on the coil pack to plug (like on the z22se standard set up)
you could also fit a longer single spring to replace the original if you so wish
I also have fitted a set of NGK BKR7EiX Iridium Plugs, the standard saab plugs were an unknown quanity so had to go.
Might be best to get a spare coil pack off ebay or buy some new springs from an industrial supplier.
The old coil packs had a 'resistor/something' in between the two springs, the later coil pack has a single spring, I used one of the old style springs with a new style spring to create a longer spring.
old coil pack = 12567686, new coil pack = 12580537
the 'saab / lsj / z20net' cylinder head has an extra ancillary drive fitted to the exhaust cam. The z22se exhaust camshaft is shorter so unless you use 'saab / lsj / z20net' cams you need to blank off two oilways.
the first is for the cam bearing and the second is an oil feed for the exhaust cam driven ancillary.
I had several ideas to blank these off but decided on a simple method, drill and tap M10x1.5 and fit a matching grubscrew with some threadlocker.
These are the two oilways circled in red, I have already drilled and tapped them
tip: to open up the oblong cam bearing oilway I started with a 4mm drill bit and then increased the hole size in steps of 0.5mm until I reached the required size for the tap.
vocky, thinking of tapping the exhaust ancilliary to 1/8" npt to run an oil temp sensor, I think it's conveniently about the right size.. what do you think?
also whats the minimum thinkness of plate I could get away with using?
vocky, and idea what the thread size is on the banjo bolt for coolant vapour takeoff is? i think it's either M10x1 or M10x1.25
the other hole (meant for second coolant temp) is a standard m12 which is no problem, but the banjo is a really thin thread
thanks.. grabbed one off ebay for a few quid with an 8mm normal type hose connection
For the temp sensor hole I really want to fit a real temp guage.. but converting M12 to 1/8npt with a thread adapter bolt may be impossible since they are such a similar size