plenty of 1 piece mani,s around eh (mini and vauxhall etc) i found them to be stronger really
with flanges you are limited to welds into the corner, and bolt hole access
i always torqued to about 100nm
then undid half a turn, and re-torqued 1 bolt at a time (preferably the next day)
i found that the cg compound gasket compressed, and that the bolts would go another 1/8th turn at the same torque, if done 1 at a time
the coilpack pistons have the same compression height, but they are a later design
the cga3 crank will raise it for you, skimming the block or head gives slack lower chain issues
http://www.micra.com.au/community/message.php?messageid=65695...
the copy maf,s and dizzy,s seem to be very problematic, you are probably best to ask one of the many k11 breakers on here or the facebook pages to post you a genuine coil/module from inside the dizzy
bear in mind i never ran an intercooler, and only used unleaded chris
and my corsa piston engines never blew ringlands
even 5psi is a hoot to drive, if you include a very light flywheel and a load of strippage
i blew about 5 engines on the stock ecu (18 months iirc)
and blew a couple with the basemapped nistune (2 yrs iirc)
paul and stani both blew some with nistunes
i did a lot of 3rd gear hard pulls no probs
and the bigger turbo engines tended to last longer (td04 and 05) they were obviously slower...
i blew ringlands at 20+ and at 7psi chris
i think there is some anomaly in the cg that makes it randomly let go , hit the throttle wrong or whatever ? because i had engines that lasted months then suddenly randomly failed
if you lift the throttle and then boot it it goes from 1/2 a bar of vacuum...
best to get 1 of these rather than throw parts at it imo,
if the spark timing advances when it tries to stall, that points to the idle control valve
https://www.micra.org.uk/threads/tost-the-official-spam-thread.53370/page-63#post-651217