Which Engine Is A Better Candidate???

[pure-specimen]

OK, Yes there's an obvious answer to the question, but my situation is just different. I have both a 4g63t and a 420a, and I'm looking for some opinions on which engine is better for hp and being turbo? Obviously my GS-T is already turbo'd but I have had it up to here - with my GS-T, and by here I mean above my head . I have no idea whats wrong with it and its going to probably cost 4 to 5 grand to fix whatever the hell is wrong with it. On the other hand I could use the money to Turbo my GS, but I'm feeling scared to spend 5 grand just to gain like 100 hp on the GS. is it worth spending the money on the GS or is it better to fix the GS-T? oh, both are 2g's.

opinions????

 

[Mitsu RacerX]

Whats wrong with the GST. Overheating or just being a stubborn DSM

I have had a rs-T 95, believe me its not worth dumping all that money into a none 4G motor. Mine ending up costing me 5000+ for all to get done. Of course if ya want to get more than 6 to 9 psi in a 420A you'll have to do the crank,rod, and pistons to get more than the previoulsy stated 6/9 PSI.

 

[TalonESIT]

Whats wrong with the GST. Overheating or just being a stubborn DSM

I have had a rs-T 95, believe me its not worth dumping all that money into a none 4G motor. Mine ending up costing me 5000+ for all to get done. Of course if ya want to get more than 6 to 9 psi in a 420A you'll have to do the crank,rod, and pistons to get more than the previoulsy stated 6/9 PSI.

You must have over paid for your turbo setup...but I will admit that the 420a is a whole different headache...

There are a lot of little things that add up for turboing the 420a motor, but it is a VERY reliable motor when built right, bottom end that is. You do not need a new crank, just new rods, forged pistons, rings... any head work is just an added bonus, meaning you can boost well beyond 9psi with just a built bottom end.

The major issue with turboing the 420a, and the part where the headaches come in, is the tuning. The fuel setup is where most people give up on the 420a, it doesn't run the way the want it to and they scrap their plans for power. There are a lot of people here that have turbo'd their 420a and wouldn't even think of regretting their decision.

If your serious about going the route of a turbo 420a, jump in our forums and see what you think about it, search around and do some reading...

Don't under estimate the 420a, but realize it is not a just an all "bolt-on" affair. especially if your aiming for some serious power.

I never regret turboing my car, eventhough I almost gave up on it countless times from frustration. I learned SOOOO much, from reading and trial and error, that I never would have if these cars were truly all bolt-on.

To put my explanation simpler answer this, what are you looking to get out of the motor you choose? Power? Knowledge? Just a Fast car? Please elaborate...

 

[pure-specimen]

The GS-T has a really high idle, no matter what I do it just has a constant idle of 2k. The clutch is really soggy, but I dont think it's crankwalk. The car overheats when the a/c is on and list goes on and on and on..... So your RS-t wasnt worth spending the money for the return? If I did turbo the GS first thing would be the rods and pistons, fuel, and then turbo and goodies. That info was good thanks!!

 

[turbodsm18]

Break your problems down to the basics because most likely all of them are easy fixes........Soggy clutch - try bleeding it..........High idle - maf snesor - iac valve- clean throttle body - check for vacumn/boost leaks..........Jost some examples.........To turbo a 420a it would cost a lot of money to do it RIGHT.

Just my .02

-Kevin-

 

[pure-specimen]

talontsit



My first thought is a goal of 275 to 350 in hp with 9psi+ and I want to to it on a 6k budget. I read and reviewed a couple of timeslips for the 420a's and saw the power was there but the war stories of beating stangs and so on weren't there. This was reading between 2GNT and the 420a section. So the short and skinny would be a fast car, and thats my dilemma Im wondering if 6k it better spent on the GS-T or beefing up the 420A?

 

[pure-specimen]

turbodsm18


Thanks my biggest concern is with the a/c overheating the car, what causes that???

I'm not really mechanically inclined, so trying to trouble shoot the problems are very difficult for me. but I want to learn to do it myself. Once I can get help on the root cause of the a/c overheating the motor; your right the high idle and soggy clutch would be easy to learn and fix.

If I can figure those out I would stay with the GS-T

 

[turbodsm18]

A/C overheating the car could be due to the Coolant cap not having a good seal, or you may want to check to make sure you have no leaks in your cooling system, Make sure your a/c fan is kicking in when it should be, check fuses around engine bay as well as in the car.

My personal opinion is that I would keep the GS-T. I will be a hell of a lot easier to mod and I would say a majority of this sight is dedicated to helping people out. Im sure there is an easy solution to all your problems it just needs to be found.

-Kevin-

 

[Snobordin8]

It's much easier to make a 4G63 fast vs. a 420a. I recommend trying to fix your GS-T. The 420a is a good motor, but the 4G63 is built for boost from the factory.

 

[FORMONTOYA]

I'm not a 420A guy and know very little about them. However, recently I have been doing some reading in the 420A forums and have really gained a lot of respect for the bunch. Especially when it comes to the fuel needs for any real performance gains from turbo-ing it.

I'm not really mechanically inclined, so trying to trouble shoot the problems are very difficult for me.

This leads me to believe that doing the 420A might not be the right choice. Unless you have deep enough pockets to pay someone to do it for you, or you know someone local that can assist.

Whichever route you go..........just make sure to do plenty of research and take your time. It sounds like you're on your way to a great learning experience.