Hey Guys,
After some opinions on engine choices to roughly plan out an upcoming build
the chassis will either be a 1200 or 1000 datsun ute (depending upon what i can find), that i'll start to look for once my current track car has been sold

I'm looking at making it competitive in the IPR under 1600cc class, i know the chassis will work for the courses here in SA (current IPR lap record at mallala is a 1200 coupe with a sr20det).

I'm undecided on the engine choice atm, and am open to suggestions about other possible motors. Rules for the class can be found here
http://docs.cams.com.au/Manual/Race/RA26-Group-3J-2016-1.pdf
but below are the basics

engine must come from the same manufacturer as the chassis, with the same number of cylinders in the same configuration
1.7x engine capacity for forced induction
36mm restriction in turbo inlet (or 27mm for twin turbos, etc)

Current considerations
CR series engines (1.4ltr (1424cc) na or 1ltr (940cc) with a turbo)
+light (61kg wet)
+twin cam
-will it make ~200hp (na 1.4?)
+direct injection (could have issues with getting aftermarket injectors)
-east/west motor
+bolts up to a series gearbox (although won't handle the torque)
+used as a race engine by nissan for the micra
info: http://datsun1200.com/modules/mediawiki/index.php?title=CR
http://datsun1200.com/modules/newbb/v ... id=401282#forumpost401282

SR16VE N1
-expensive
+good power from factory (200hp)
+rwd (using sr20 block)
+aftermarket support
-heavy (139kg)
+many conversions done and kits available
+designed to be a 'race' engine

MA09ERT
-east/west engine
-single cam
-8 valve head
+super light (43kg)
+factory turbo (bigger rods, etc)
+designed to be a race engine (used for <1600cc racing in japan in the 90's)
+looks the least out of place (being single cam)
-not efi (will have to convert)
info: http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=55350
https://en.wikipedia.org/wiki/Nissan_MA09ERT_engine
FYI i would ditch the supercharger and just run a turbo to save weight

at this stage leaning toward either the CR (cheap and easy to get in Aus) or the MA09ERT (cheap, have to get from japan).
I did consider the A series with a DOHC head (ie miata) but then i'm stuck with the weight of the A series cast block, would be cheaper (and lighter) to go with a CR motor

if someone can think (or knows of) a twin cam head that will fit on the MA09 let me know, don't mind experimenting a bit
cheers
Luke