Has anyone ever put a 2.3 L 16v head to a 8v block. I was thinking about putting a 16 v on my sierra engine because the 2.3 block is probably cracked and it mixes oil and coolant i have changed the head gasket and the head and block have been machined flat. So that shoumdent be the problem.

 

2.3 head has larger combustion chambers to match the bigger bore of the 2.3 engine.
You would need a 2 litre 16v head

 

So if i get a 2L 16v head so it just bolts up do i need to make any changes to the timing side i dont worry about the electrics because its getting a standalone ecu, ITB:s and headers

 

assuming you are talking about the I4 engine you can certainly bolt the 2.3 16v head to the 2.0 8v bottom end and everything will line up and work
however the compression ratio is up to around 11.8:1 so you'd either need to fit a thicker head gasket or remove some material from the chamber
you'll also need to do some ecu stuff
and fit the coil packs
but once it's done you'll get v6 power and torque levels for 4 cylinder fuel economy

 

Amazing. I didn't know that the 2.3 16v cylinder head is straight bolt on the bottom of the dohc 2.0 8v

 

yes it will bolt up but won’t work as the combustion chambers won’t match. (Based on what is in the answers to this thread)

 

2.3 head lowers compression on a 2 litre and overhangs the bores.

I'm sure someone has done the 16v head swap on this Facebook page

https://www.facebook.com/groups/217128698464709

 

Yes talking about that engine. is the 2.3 head different to the the 2.0 16v head if so by how much? I am also debating on do i need to change pistons because of the compression or can i just take some material out of the stock pistons.

 

my mate did it about 15 or so years ago and removed stuff from the heads as much as he dared
i think i've still got the gasket kit from when i sold him the engine lol
he was running on after market management though and while everything worked i think it was a case of him having other plans and he retired it after a few years