Question

[99'EclipseGS]

i know this is a very newb question and i feel ashamed asking it, but what's the difference between a 4G63t motor and a 420A motor?

 

[erald01]

There is a lot of differences. They are two totally different enignes, so i suggest you do some more searching. Just to get you started, besides the fact that one is NA and one is turboharged, 4g63 was used on older model evo's(especially evo 3), but since mitsubishi didn't want to bring the evo to u.s, they decided to put the engine on an eclipse or talon. That is why 1g and 2g eclipses were not produced in japan. The 420a on the other side is the base engine, which was also founde in the Dodge Neon. 4g63 is also more bullet proof and can take a lot of abusing, because it is built for boost, where as 420a is a NA engine which can only can take half of the abusement. FYI there is a few kind of 4g63, but i am refereing to the ones that are used in our cars.

 

[cruisintalonawd]

what where you wanting to do????

 

[spooln4fun]

1000 Already Answered Questions - Index page

I belive that link will help out alot

 

[spooln4fun]

Here is a peice of info from that page.

What does 4G63 mean?
What does 420A mean?

These are engine model designators. 4G63 is the Mitsubishi model number for the DSM turbo engine, which was built entirely by Mitsubishi. The 4G63 model number was used for 1G turbo, 1G non-turbo and 2G turbo engines; although the engines are somewhat different from each other, they retain the same basic design.

Please note that there are different 4G63 engines, although posters on the Talon Digest almost invariably mean the turbo 2.0L version. Generally speaking, components from one 4G63 can be fitted to another 4G63, because the basic components (head, block, etc) are the same.

420A is the model of the Chrysler-made 2G 2.0L non-turbo engine. Fundamentally different from the Mitsu 4G63 engines, the 420A represents a distinct shift in DSM evolution, as Chrysler took over engine duties on the non-turbo cars. Generally, components from 420A engines cannot be fitted to the 4G63 engines, or vice versa.

 

[Locke]

The difference between 4g63 and 420a? Everything.