Cylinder Head Question

[Terrance362]

Anyone ever slap a 4g61 head on a 4g63?

 

[iceman69510]

I have used one on my 92.

 

[89Mirageman]

Plenty have, I'm doing it now on my 94 Summit. Well I'm actually using a 4G64 but same difference. There is some info in the archives over on 4g61t showing the difference in the head and also the Hyundai variant.

 

[Terrance362]

Just didn't know how things how things would react to the smaller combustion chamber, I planned to run a whole lot of boost on this motor. The setup up is an 8:5:1 stock stroke, MLS head gasket, 288 cams, Kiggly race only valve springs.

 

[Terrance362]

Under a little research I think the head is a"4g37". The intake ports are not small at all.

 

[fuel]

4G37 is a completely different engine altogether - it is a 1755cc SOHC 8V with 5-bolt flywheel used in the 1G DSM along with other overseas market Mitsus like the base model 6th gen Galant, Chariot, Lancer etc.

 

[iceman69510]

I had some knock running basically stock boost with 91 fuel. I'm sure it could be tuned better but I never really bothered. It did seem to have a little better bottom end performance with the slightly increased from stock compression ratio.

Quoting Terrance362:
Just didn't know how things how things would react to the smaller combustion chamber.