Is It possible?

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10-10-2010, 03:50 PM
galant187*

Is It possible?

dose anyone if its possible to swap the 6g72 sohc in a 02 galant for the 6g72tt dohc from a 3000gt? will it fit :orangebiggrin:
10-10-2010, 04:11 PM
blue8g

This has been discussed time and time again.

NO IT WON'T WORK
10-10-2010, 06:07 PM
SPD_FRK

Possible yes, practical...not really.

The 3000GT uses the same 6g series engine as what is in the 8th Gen Galant, with the exception of the DOHC. The key difference is that the mounting of the 3000GT engine and transmission is 180* from that of the 8th Gen Galant. In addition to this difference, the engine rotation is 180* from the 8th Gen as well, meaning even a DOHC swap from the 3000GT would likely cause serious issues with the valve timing.

If you want a DOHC engine, look into the XG350 3.5L DOHC, they seem a bit "rare" to find, but with enough digging you can locate one that matches the 8th Gen mounting orientation correctly.

The next issue to overcome on a DOHC swap, engine or heads, is the ignition system. the DOHC engines use a distributorless ignition that uses a cam position sensor in conjunction with the crankshaft position sensor to trigger correct firing order of the spark plugs. To manage this you will need a full standalone engine management system (usually in excess of $1500 for a good system), or you will need to do a full ECu swap and re-wire from the donor vehicle to control this ignition system.

The better alternative, and one that is slowly gaining large popularity in the V6 platform is the 6g75 (3.8L) swap. The benefit of this besides the displacement increase is that the heads on the 6g75 have been flow tested and have substantial capability, even in comparision to a DOHC setup. In regards to the MIVEC or Non-MIVEC 6g75 engine, both are good choices, the MIVEC has that "VTEC" (don't mean to hate on Mitsu, just the best reference I have to compare) craze behing it due to the increased lift, though you will need to control the solenoid in some way as to not damage it. The Non-MIVEC 6g75 does not have the increased lift, so power output may not be as high as the MIVEC version, but unlike the MIVEC version the Non-MIVEC does have aftermarket support for performance camshafts to make up for that.

If you need any more help, or tips shoot me a message and I can certainly assist you.
11-02-2010, 10:18 AM
VR4FTW

Quote:

Originally Posted by SPD_FRK

Possible yes, practical...not really.

The 3000GT uses the same 6g series engine as what is in the 8th Gen Galant, with the exception of the DOHC. The key difference is that the mounting of the 3000GT engine and transmission is 180* from that of the 8th Gen Galant. In addition to this difference, the engine rotation is 180* from the 8th Gen as well, meaning even a DOHC swap from the 3000GT would likely cause serious issues with the valve timing.

If you want a DOHC engine, look into the XG350 3.5L DOHC, they seem a bit "rare" to find, but with enough digging you can locate one that matches the 8th Gen mounting orientation correctly.

The next issue to overcome on a DOHC swap, engine or heads, is the ignition system. the DOHC engines use a distributorless ignition that uses a cam position sensor in conjunction with the crankshaft position sensor to trigger correct firing order of the spark plugs. To manage this you will need a full standalone engine management system (usually in excess of $1500 for a good system), or you will need to do a full ECu swap and re-wire from the donor vehicle to control this ignition system.

The better alternative, and one that is slowly gaining large popularity in the V6 platform is the 6g75 (3.8L) swap. The benefit of this besides the displacement increase is that the heads on the 6g75 have been flow tested and have substantial capability, even in comparision to a DOHC setup. In regards to the MIVEC or Non-MIVEC 6g75 engine, both are good choices, the MIVEC has that "VTEC" (don't mean to hate on Mitsu, just the best reference I have to compare) craze behing it due to the increased lift, though you will need to control the solenoid in some way as to not damage it. The Non-MIVEC 6g75 does not have the increased lift, so power output may not be as high as the MIVEC version, but unlike the MIVEC version the Non-MIVEC does have aftermarket support for performance camshafts to make up for that.

If you need any more help, or tips shoot me a message and I can certainly assist you.

Where exactly is the position of the 3KGT transaxle?
Is it in the passenger side in LHD?