What is the difference between the 420a and 4g63?

[Slammed0]

So, the forum I was in got closed. Don't know why? Way heavily moded for whatever reason I suppose.

I was going to ask this: What is the difference between the 420a and 4g63? Besides some of the obvious reasons, why does everybody say the 4g63 is so much better?

I just want to know. The more info for me the merrier.

 

[DSMSpyder99]

the 4G63 in turbo DSM came from the lengendary Mitsubishi EVO 1-3. The stock block is good for 400WHP and can boost 20+ PSI without a sweat. Bolt on parts such as a turboback exhaust yields amazing gains (30+WHP). Also, more advance part such as HKS cams do wonders on the 4G63. Pound for Pound the 4G63 is the one of the best I-4 on the market ( the A853 & SR20DET IMO is the only main competition) The 420a comes from a neon R/T...nothing great about that

 

[CanadianTSi]

4G63 is designed from the factory to be boosted, 420a is not...

 

[ACKERSON]

the 4G63 in turbo DSM came from the lengendary Mitsubishi EVO 1-3. The stock block is good for 400WHP and can boost 20+ PSI without a sweat. Bolt on parts such as a turboback exhaust yields amazing gains (30+WHP). Also, more advance part such as HKS cams do wonders on the 4G63. Pound for Pound the 4G63 is the one of the best I-4 on the market ( the A853 & SR20DET IMO is the only main competition) The 420a comes from a neon R/T...nothing great about that

The 4g63 didnt come from the EVO 1. I'm not 100% certain but the earliest car I know of that had the 4g63 was the Galant VR4. The first EVO's were built in 1992 and the first VR4's were built in 1987.

 

[BGRIPTP]

. The stock block is good for 400WHP and can boost 20+ PSI without a sweat.

Pfft, thier making 500 hp and 28+ psi around here on stock bottom end, stock head. Coltboostin (member on here, local to me) just put down 446whp on his stock bottom end stock top end with 120,000 miles on it... 60-1 at 26 psi.

The 420a isnt acctully that bad of a motor, the head was designed within partenership with Lotus, and teh SRT4 engine is based off the 420a.

 

[DSMSpyder99]

the 4G motor can be dated back to the 70s but i didnt want to get into the whole explanation of y mitsu ditch the VR4 for the light weight lancer body and junk. so i just said the EVO since its more ppl know EVO then VR4

The 4g63 didnt come from the EVO 1. I'm not 100% certain but the earliest car I know of that had the 4g63 was the Galant VR4. The first EVO's were built in 1992 and the first VR4's were built in 1987.

 

[out there]

i would think that a turbo 420a (assuming equality of materials, with 7.8 or 8.5 compression) would walk all over the 4g63 in the same car. but... the equality of materials is where the 4g63 shows it's stock superiority

 

[XdsmdemonXRS]

420a vs. 4g63....i own a 420a and i love the motor, but i want a 4g63 for the better stock internals to build off of for serious horsepower....but my 420a stock when i first bought the car beat a Civic Si and ,of course,(since i live by lordstown,Ohio), I'm always wasting cavaliers....and they grew old quickly.... i don't know, i just like both engines ....the one i have a question about is i have heard that 1g's non turbo 4g63 motor(6 bolt) has higher compression ....so would it be a better idea to purchase one of those and bolt up a factory or aftermarket turbo system?

 

[out there]

a local shop was going to do some experimenting with the 1g nt (4g63, of course), i haven't heard anything about it yet. to give you an idea, the owner ran 13.0 in a 90 integra with just bolt-ons, slicks and 60shot of n2o, and got a turbo 94(?) civic hatch to run 11.9 with stock block, head and tranny.
considering the shop history, i'm curious to see what the turbo 1g project brings

 

[HighPsi92GST]

a local shop was going to do some experimenting with the 1g nt (4g63, of course), i haven't heard anything about it yet. to give you an idea, the owner ran 13.0 in a 90 integra with just bolt-ons, slicks and 60shot of n2o, and got a turbo 94(?) civic hatch to run 11.9 with stock block, head and tranny.
considering the shop history, i'm curious to see what the turbo 1g project brings

What really needs to be experimented with? People have turboed the NT 4g63 before, it's nothing new. The built up blocks (switched to turbo pistons and installing oil squirters) basically turns into a turbo block. Keeping the stock block and turboing ends in either a car only capable of low boost, or one that has one wheel in the scrap yard already. Both have been done already

 

[Slammed0]

Thanks for the info guys. I want a turbo but to be honest with you I didn't do my homework when I bought the Eclipse last year and I had no clue that the N/T and Turbo motors were different.

Can the turbo parts off a 4g63 work with a 420a?

 

[DSMSpyder99]

BWHAHAHAHAHA

Thanks for the info guys. I want a turbo but to be honest with you I didn't do my homework when I bought the Eclipse last year and I had no clue that the N/T and Turbo motors were different.

Can the turbo parts off a 4g63 work with a 420a?

 

[HighPsi92GST]

Thanks for the info guys. I want a turbo but to be honest with you I didn't do my homework when I bought the Eclipse last year and I had no clue that the N/T and Turbo motors were different.

Can the turbo parts off a 4g63 work with a 420a?

No they wont work

 

[out there]

What really needs to be experimented with? People have turboed the NT 4g63 before, it's nothing new. The built up blocks (switched to turbo pistons and installing oil squirters) basically turns into a turbo block. Keeping the stock block and turboing ends in either a car only capable of low boost, or one that has one wheel in the scrap yard already. Both have been done already

why buy a car with a turbo? why compete with others to go 1/4 mile? why waste thousands of dollars on a car just for it to break regularly? you want to go down that path? i didn't think so...

for the same reason that he put together a turbo kit for the d-series honda, because there's a big market for it... and if he can figure out something that will work reliably with a nt 4g63, then he can market that too.

 

[Slammed0]

No they wont work

Well I kind of understand that not all the parts would work, but I don't see why I couldn't get some of the parts to work for me, i.e. the turbo.

I only wonder because I have a buddy who works at a bone yard and could get some good deals.

 

[SpeedFreak03]

Yeah basically, they are two completely different motors (420a being a Chrysler motor, 4G being a mitsu motor). One won't swap into the other's engine bay, and you can't turbo the 420a only using stock parts from a 4G63T (of course you can use some, but you'd need a 420a exh. mani, etc). It might be cheaper at this point to sell yours and buy a stock turbo'd DSM (GST, GSX, TSi, TSi AWD), it would certainly cause a lot less headaches. But if you want to be in for a good learning experience, have money to spend (and I mean money ), and want a faster car then a stock DSM in the end (maybe sacrificing reliability), then go for it! Good luck with everything tho!

 

[Slammed0]

Ya, thats what everybody says. Sell Sell Sell. The only other problem is the market. I live in Boise, Idaho. It is a good size city (not small like some of you might think, yet not huge) and it really isn't that easy to come across a GS-T/GSX. I have seen a few come and go but they do sell. And dealer lots want ALOT!!!

Maybe somebody would want to trade me!

 

[XdsmdemonXRS]

Ya, thats what everybody says. Sell Sell Sell. The only other problem is the market. I live in Boise, Idaho. It is a good size city (not small like some of you might think, yet not huge) and it really isn't that easy to come across a GS-T/GSX. I have seen a few come and go but they do sell. And dealer lots want ALOT!!!

Maybe somebody would want to trade me!

Not to get off the subject , by the way , Thanks for some answer on the NT 4g63 idea, but i had an interesting story for you , hard to find GS-Ts and GSXs?....maybe true but my buddy ,who just registered one here , bought a 1995 silver GS-T from a Salvage Auction for like 1,000 dollars towed to his door, supportively the car had a bad motor, so he gets the car and its unbelievable clean, thats when he realizes the car has 26k ( this was a year ago), and the bad motor?....just needed the Ignition relay put back in it (bad motor)....unfortunately , he sold it to some 16 year old kid ...and he blew it up a month later ....not before he paid 7,100 for the car .... ...so remember this, theres always deals out there if your patient and wait ...and your looking in the right places!!