I looked up on wiki its says TS magna/verada has a 6G72 3.0litre V6 engine , it is same as the third generation magnas. but the engine in verada looks differrent and sit a differemt way compare to a newer 3litre V6. Does any one knows if they are same or only has different intake manifold and engine mount?

The TS/KS models use a 3.0L 12-valve V6 motor, but Third Gens (including the TF) use a 3.0L 24-valve V6 motor. From what I understand the engines are quite different mechanically, but i'm not familiar with all the minute details of differences between each.

The two cars are so different - I have owned one of each - that its pretty much the same job as putting a Camry engine into a TS, or any front wheel drive engine/trans from a different make . . . . . .

And why should you want to? It's so much easier to just buy a complete 3rd gen.

i have the 3rd but my friend has a 2en gen, i am just wondering because on wiki they are same engine model, lol

Different compression ratio pistons, also one uses a cross over oil pump and one does not, not to mention a different timing system. totally different.
Remember, 6G72 is an engine code mainly referencing size.
6G71 2L
6G72 3L
6G73 2.5L
6G74 3.5L
6g75 3.8L

i have the 3rd but my friend has a 2en gen, i am just wondering because on wiki they are same engine model, lol

Have a look under the bonnet of each of those, and they will have little in common. They have spark plugs, burn fuel, and are EFI - not much else in common.

;1366754']Different compression ratio pistons, also one uses a cross over oil pump and one does not, not to mention a different timing system. totally different.
Remember, 6G72 is an engine code mainly referencing size.
6G71 2L
6G72 3L
6G73 2.5L
6G74 3.5L
6g75 3.8L

Check out http://en.wikipedia.org/wiki/Mitsubishi_Motors_engines for the full list. lol Single cylinder through to V8. Diesels in there too.

for a 2nd gen v6 is it easy to replace the spark plug? i know i need to take the inlet off coz i did it for my 3rd gen ,

Easy as, intake manifold stays on, just reach behind.

Not to mention the 2nd gen ones have knock sensors and high compression and adjustable timing via dizzy (there is a genuine difference between using 91 and 95 unleaded with 4 more kW and 9 more Nm so more if using 98 unleaded), variabe length intake manifold (long for low rev torque and short for high rev power and a mix in between).