Hey guys, just trying to boaden my knowlege a little more and was curious. The 4g64 and 4g63 are relatively the same engine other than the 64 being a 2.4 instad of 2.0... could you swap a 4g63t into a 2g spyder? i don't think this topic has ever been brought up and i'm just curious.

 

i would like to know to

 

im pretty sure its almost the same amount of hassle and work as swapping it into a 420a engine bay. However swapping a 4g63 DOHC head onto the 4g64, now that you can do

 

hmm... i wonder what the problems would be? how much better does the 4g63 DOHC head flow than the 4g64?

 

well the 4g64 on the spyder i believe is a SOHC so there is the big difference

 

it is, i was just wondering what kind of difference you would be expecting if you were to swap it. i don't know much about the spyder's and i'm trying to be learned something lol

 

is this only realitive to the 2g? or can you swap a 63 head on to a 3g rs, gs?

 

i think you can. Becuase if i remember correctly alot of people would swap the EVO heads onto the 3g eclipse's

 

OK let me get in here since I have owned both engines.

The 2G spyder yes it can swap the GST motor in and it can also swap AWD drivetrain in as far as I know Its been done a few times unless they were GSt Spyders swapping in drivetrain, but I always understood it as 4G64 cars since the spyder from what I have seen has the same frame as the GSX due to needing to be stiffend up and reinforced. The only main difference is the crank. Alot of guy actually use a 4g64 crank to stroke their motors. The 3G GS\RS is also a 4g64 but it is single cam and faces opposite the 2G DSM motor. HOWEVER people can swap the Evo head in and it has been done a few times. There is no poit swapping the block your better off for your money to build the bottom end of the 4g64 3G motor and turbo the car so you have a built stroked motor it is really no different from stroking an Evo motor if you swap the Evo head onto the 3g and the power gains end up becoming similar to an Evo minus the traction help of AWD

 

so your saying i can swap a 4g63 head on my 4g64 and turbo it? hmm. that would be sweet. and possibly go awd? what kind of power gains am i looking at if i swap the heads? 20-25 hp?