Combustion chamber size

[pitmac]

Is the combustion chamber the same size for 4G62 and 4G63 SOHC 8V.
What is the size of the combution chambers?
ie 63cc or 60cc or whatever it is

[Starion VR4]

4g62 is 32cc, starion 4g63 is 47cc :beer

[pitmac]

The 4G62 should in theory be 59cc and the 4G63 SOHC should be 66cc
Can anyone confirm this?

[RiceThief]

Look here
http://www.wiseco.com/PDFs/Catalogs/SC06_Mitsubishi.pdf

saids that 4g63 head chamber cc is 47cc, gee look you also own one of the biggest piston manufacturers in the world. Well done.

[SpidersWeb]

Just exactly what happened there?

[pitmac]

the Wiseco listing is for a 4g63 DOHC 4 Valve motor with a different shape combustion chamber.
I need a listing for a 4G63 SOHC 2 Valve motor with a Hemispherical combustion chamber. The twin cam head has a pentroof combustion chamber.
Can any one help

[RiceThief]

Just exactly what happened there?

My post doesnt make any sense now that rogers post have been deleted, pitmac i only just noticed that u were after the sohc cc size, so i'll just crawl back into my hole. Im sure starion vr4 can answer your question there.

[sLug]

I thought pitmac was roger as well!!!! :o

[coop1er]

Using 1997cc for the g63 and 1795cc for the g62 and 7.6 as the
compression ratio for both, my dodgey maths says that the combustion
chamber for the g63 is 75.6cc and 68cc for the g62.

Remember this combustion chamber is the total volume of head volume
plus the volume of the dish in the piston.

[chooky]

we did a comb. camber test on the Group A and we got 47cc, what isnt clear is how many times the head has been planed!
also the valves and how deep the have been cut we effect the out come!

you should find someone with a Beret and check for yourself

I got a program were you enter your cc, bore, stoke and head gasket thickess to get comp. ratio if you can get those figures!