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View Full Version : 1.2 or 1.4 head??


JAMIEP
05-12-05, 06:51 PM
wots better a 1.2 or 1.4 head?? thanks
Adam
05-12-05, 07:07 PM
Which 1.4?
If carb, then the 1.2 carb is better.
JAMIEP
06-12-05, 01:59 PM
not carb both spi
Adam
06-12-05, 05:45 PM
not carb both spi
They both have the same ports etc.
But the 1400 has bigger bores due to bigger cylinders

There would be no benefit from fitting a 1.4spi head IIRC.
alistairolsen
12-12-05, 11:11 AM
burn both of them, get a c14se head off an sri nova or astra si.
burgo
12-12-05, 07:53 PM
what engine do you want to fit this head to?
JAMIEP
14-12-05, 02:02 AM
lol i wish i had burnt thm! got an sri head now.....and hopefully the mulitpoint.....will this all fit ??? havent i gotta change my cam cos it looks different 2 other sris??? cheers
Stuart
14-12-05, 08:15 AM
cam remains the same.

just swap the head, and make sure you get the right inlet manifold
Adam
14-12-05, 02:55 PM
What are you trying to do?
Put a MPI topend onto a SPI bottom end?
JAMIEP
14-12-05, 04:10 PM
yeh think so!
Adam
14-12-05, 05:19 PM
yeh think so!
You will need MPI inlet, injectors etc etc.
MPI ecu, MPi loom.

And then it wont be full 1.4mpi power as the SPI bottom end is slightly different to the 1.4MPI, compression ratio is different IIRC, as the pistons.
JAMIEP
19-12-05, 02:34 AM
Already got an sri head, about to buy mpi injectors inlet loom etc. any problems with fitting all this??? will it be the same power as a normal sri?? thanks
DIY*VALVER84
19-12-05, 03:25 AM
mpsi?spmi?imps?why u wanna mate 2 different engines?
you do know that if anything this is gonna be under powered compared to a normal mpi or spi.you will need the injectors etc to make it work but i think ul be disapointed by the lack of mid range.piston clearance may be a prob too but ul have to see what happens.
that said...all the best.
JAMIEP
19-12-05, 04:02 AM
yeh but anything is better than the standard 60bhp i have now lol! may gettin it all for ?70 is that good or bad?? cheers
Stuart
19-12-05, 09:43 AM
to be utterly frank, your probably best off getting a complete 1.4 sri engine (dont forget the fuel pump)

saves lots of fcuking about and missing those piccky little parts etc.
JAMIEP
19-12-05, 12:38 PM
yeh it does sound like a bit of a job.......think i mite jus keep it as i 60brake beast for when i finally finish it then save up n maybe do a redtop conversion if i keep it!! cheers mate