The Mitsu 4G63 is a rock solid engine, it can handle lots of boost, lots of horsepower, and lots of miles on the stock internals. Just make sure you change the timing belt every 60K.

 

Can easily hold up to 400hp, and even take up to 450, but after 400 it is best to begin to modify internals just as added protection. doesn't take much, and you can always swap out the internals for about 2500 bux and have a rock solid motor capable of 600+hp. Don't feel stupid, we have all been in your position at one point in our lives and we are all still learning. One of the best things about DSM's that I have found is all of the amazingly awesome people on this forum who would bend over backwards to help us out when in need, thanks guys, if it wasn't for you I would still be that "Can I stick a eclipse turbo on my GS" kid I was not even a year ago.

It really hit me one night how much I have changed and how much help this forum has been, when I was selling my T25 on ebay and I kept getting all these emails about if they could slap the T25 on the NT eclipses. I was talking to my mom about how it was pissing me off that they were so ignorant but then she reminded me that not even a year ago I had said the exact same thing, and it hit me hard how far I've come.

Get a DSM you won't be disappointed

 

Just realized how old this forum is, how’re you doing now ?

 

I see ballpark figures that it can handle 400whp and around 25 psi (maybe a little more) on stock internals. In SCC last month, the silver eclipse had stock internals and was making close to 400whp. Someone else who knows more please step in.

 

Like I said, it can, but don't test it, if you make enough to outflow 550's that is generally a good time to upgrade the guts.

 

400 whp and 25 psi on stock internals?? Wow I guess that answers my questions on how strong the 4G63 is. It also shows me how much easier this engine would be to modify rather than my turbo 13B Mazda rotary is, which is bad. But what I really can't stand is idiots who drive Preludes and Integras and think that Honda VTEC engines are the stongest 4-bangers ever made. Most of them think that the 4G63 is far weaker than Honda's H22A1 or B-series engines. I guess these hard facts prove them all wrong. All I know is that if I tried to run 25 psi with stock apex seals, water seals, and oil seals on my TurboII, it would have fallen apart within minutes of driving. Hell, anything over 10 psi in my Rex would be painstaking and troublesome because simply put rotary engines aren't built strong enough to handle high boost and high horsepower. Thanks for all the info guys and additional comments and info are more than welcome.

 

Yea most honda boys eyes open wide and they almost piss themselves when I say I'm runnin 18psi. Just wait till I get my datalogger AFC, TT supra SMIC, and injectors on and it's up to 21psi, o they'll have to change their diapers

 

Sean Glazer ran over 600HP (at the flywheel) with the stock low end and 95 pistons, but 400HP is being considered "safe"...

 

There are a few redeeming factors in the rotaries favor, number of exhaust pulses is one and the fact that it is more efficient is another. If you still have the rotary, give it a little credit where credit is due, rotaries are cool.

 

Yeah I still have my RX-7, I'm tryin to sell it right now though so I can get a 1st gen AWD turbo Talon. Rotaries to have some advantages over piston engines, but I think the bad outweighs the good in this situation. I think the stock internals of Mazda's 13B just isn't durable enough to take high horsepower and high boost. I mean when you look at the two engines, on rotaries you have thin metal apex seals that maintain compression inside the combustion chamber, but on piston engines you have far stronger and thicker cylinder walls. It seems like the design of a piston engine just makes more sense and it seems like it could take far more abuse than a rotary can. Pistons are better protected and much better sealed than rotors are inside the combustion chamber. Regardless, it is good to know that the 4G63 is a truly solid powerplant and can handle a lot of horsepower and a lot of boost.

 

just a quick question?

if you have a 16G on your 2g, have have upgraded the uther stuff. like exhaust and intake.. how much boost will you be able to run? 18psi? i noticed that someone was going to increase to 21psi..

and how much hp will this give me?

and which track time on a FWD or an AWD?

can you reach 12:s with 350hp on a GSX?
can you reach 12:s with a 350hp GS-T?

Regards
Henrik

 

just a quick question?

if you have a 16G on your 2g, have have upgraded the uther stuff. like exhaust and intake.. how much boost will you be able to run? 18psi? i noticed that someone was going to increase to 21psi..

and how much hp will this give me?

and which track time on a FWD or an AWD?

can you reach 12:s with 350hp on a GSX?
can you reach 12:s with a 350hp GS-T?

Regards
Henrik

These questions are really impossible to answer. It basically all depends on monitoring your engine, and seeing if you have room to increase boost/lean out the car more. It depends on what injectors you have. Depends if you have full exhaust. The track times depend on how good you can drive. etc.etc.etc. See what I'm saying?

 

Welcome Henrik to the Board So you are finally getting the DSm heh?*S* I am waitng for mine to show up so..let me know when you got it and we will show ppl here in Sweden that DSM can kick ass!!!!!

/Roger

 

CrazyJ0ker

Here's some links for you to check out....

http://www.buschurracing.com/
http://www.diamondstarspecialties.com/
http://www.extrememotorsports.com/staged.htm
http://www.dsm-performance.com/
http://www.forcedperformance.net/
http://www.hrchahnracecraft.com/
http://www.machv.com/
http://www.magnusmotorsports.com/
http://www.roadraceengineering.com/
http://www.teamrip.com/
http://www.turbotrix.com/

 

This thread is literally older than some of you guys on here. People have made 600-700whp on the stock engine. They are capable with careful tuning.

 

The Mitsubishi 4G63 engine is renowned for its strength and durability. Originally introduced in the 1980s, it has been used in various Mitsubishi vehicles, including the Lancer Evolution series, Eclipse, and Galant VR-4. The 4G63 has a robust cast iron block and a strong forged steel crankshaft, which contribute to its reliability and ability to handle high levels of boost and power. With proper maintenance and tuning, the 4G63 has proven itself capable of producing impressive horsepower figures while remaining reliable under demanding conditions, making it a favorite among enthusiasts and tuners in the automotive community.

 

lots of miles on the stock internals. Just make sure you change the timing belt every 60K.

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