Ok, well it seems as though I have a decision to make based on the reports
from a number of fellow spitters.
a/ I install the plugs as they were originally, which is concave facing out,
or
b/ convex facing out.
In all things it is nice to be able to have a decision based on experience.
The experience of the majority favour the concave facing out, which is how I
have always done it, and which is how they came out of the engine in the
first place. Although I am tending to lean a little towards the convex facing
out and 'pinging' the plug to cause it to spread and therefore giving a
tighter seal. This is undoubtedly another proven method, and one that has to
be thought about.
I have run Stanpart engines with the former (a/) for a good number of years
without any hassle. So that is how I will do it this time. I will however be
keeping an eye on how things progress, and if the durn thing springs a leak
then i will have to go and buy myself a hat just so that I can eat it, and
grovel unreservedly to those who suggested I use the (b/) method. Thanks to
all who gave me advice.
( I aint finished yet, I got a whole car to build) <grin>
Happy Spitting..................John (In the UK)
Spitfire MkII in bits. (Others call it restoration)
Spitfire Chassis MkIV (awaiting a spot of welding) I am nearly a collector
!!!!!!!
Spitfire Mk III (for spares) I 'am' a collector !!!!!!
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