Is it possible...

[GSTdOff]

...to interchange 4g63t parts with a N/A 4g63? I.E. 4g63t head on a N/A 4g63 block or vise versa?

 

[MNGSX]

Since the only difference is the piston compression ratio and exhaust manifold yes.

A NT 4g63 is still a 4g63. The turbo engine is'nt that much different.

 

[crankbender]

Arn't there subtle differences in the oiling and cooling passages?

 

[dsmturboawd]

yes.

 

[kpt4321]

Yes? How do you know this?

As far as I know, the blocks are the same casting, which would mean the exact same oiling and cooling passages.

NT blocks are not tapped for oil squirters though.

 

[GSTdOff]

So a non turbo block wouldn't be ideal for turbo applications because of the oil squirters?

 

[MNGSX]

Yes.

Just get some squirters and install. Just a little drill and tap operation.