2g GSX Engine vs Evo Engine

Phatty95GSX · Feb 25, 2004

Hey all was lookin at some stuff and noticed the Eclipse 2g Engine and the Evo engine are both 4g63 models... wonderin if they wer the same engine just different turbo / turbo minifolds / ? because the Evo engine puts out a good 70more hp abouts.... would like to know if anyone else knew

Ludachris · Feb 25, 2004

Phatty95GSX said:
Hey all was lookin at some stuff and noticed the Eclipse 2g Engine and the Evo engine are both 4g63 models... wonderin if they wer the same engine just different turbo / turbo minifolds / ? because the Evo engine puts out a good 70more hp abouts.... would like to know if anyone else knew

They're a little bit different - but overall the same. Same engine code, but they've likely had some things change and evolve. If anyone has the specifics, please feel free to post them...

12secEVO · Feb 29, 2004

well, I think the internals are stonger, the cams are "hollow" and lighter...along with the valves as well *i think*...I think the head probably flows better, and the whole engine overall is lighter and stronger. But yes, It also has a different manifold and turbo...comes stock with a version of the 16g

L2RTSiAWD · Mar 1, 2004

Twin-Scroll baby!! :thumb:

Claudius · Mar 2, 2004

I seem to recall that the Eclipse has the same bloc as the early Evo models but that the head is different.

Slow White · Mar 2, 2004

I would imagine that most of the difference is in the turbo

12secEVO · Mar 2, 2004

well, yes, the turbo is a huge difference. It is a version of the 16g, most similar to the EVO III 16g but with twin scroll so it spools faster.

but the whole build quality of the EVO engine and components is better than the DSM, or at least it seems so.

spln_hrd · Mar 4, 2004

just for your info i decided to throw in the fact that the turbo II rx-7's had twin scroll turbochargers, i beleive they worked well for spoolup and top end...

what size injectors come stock with the new evos? i heard they run like 18 psi stock so i hope they got at least 550's with a better fuel pump.

also, is crankwalk still an issue? i don't mean to be a gary and bring up crankwalk like people do all the time, i am just wondering if mistu did something to cure it on the new evo's.

L2RTSiAWD · Mar 4, 2004

The 1G DSM blocks were very similar to the EVO III Blocks.

bpclements · Mar 4, 2004

The evo's come with 550cc injectors, denso fuel pump and run 19.5 psi stock. I am not sure on the flow rating. It is something like a 160lph or 190lph. The psi usually varies from car to car. I know that my car would only run at 17psi stock. A good boost controller is a definite first upgrade, of course after a boost gauge.

Here is a link to RRE's site on fuel pump flow comparisons.

L2RTSiAWD · Mar 4, 2004

I would hope that 17-19 psi on a big 16g the pump would be a 190 at least.

Fourdoor · Mar 4, 2004

L2RTSiAWD said:
I would hope that 17-19 psi on a big 16g the pump would be a 190 at least.

Stock injectors are 560's and as shown by RRE the stock pump is 160 lph

Keith

spln_hrd · Mar 4, 2004

spln_hrd said:
also, is crankwalk still an issue? i don't mean to be a gary and bring up crankwalk like people do all the time, i am just wondering if mistu did something to cure it on the new evo's.

Fourdoor · Mar 4, 2004

spln_hrd said:

The oldest EVO on the roads is about a year old now.... we will let you know if 5 years or so if they solved the problem

Keith

L2RTSiAWD · Mar 4, 2004

Fourdoor said:
Stock injectors are 560's and as shown by RRE the stock pump is 160 lph

Keith

ya I didn't see they added the EVO in.

Why does it show 2 different voltages?

jb95gst · Mar 4, 2004

I think there are two voltages because when you are at wot it charges the battery more, therefore running at aprox. 14 volts, normal driving it is probolly getting around 12 volts. Just my half ejumacated thought, maybe not though.
JB

12secEVO · Mar 4, 2004

damn...only a 160lph...anyone know if the 2g Walbro 255 will fit in the EVO...maybe I should save mine.

L2RTSiAWD · Mar 4, 2004

12secEVO said:
damn...only a 160lph...anyone know if the 2g Walbro 255 will fit in the EVO...maybe I should save mine.

I don't know, I know they sell a 255 for an EVO so if you find a good enough pic you could compare the 2.

Fourdoor · Mar 5, 2004

jb95gst said:
I think there are two voltages because when you are at wot it charges the battery more, therefore running at aprox. 14 volts, normal driving it is probolly getting around 12 volts. Just my half ejumacated thought, maybe not though.
JB

The EVO has a fuel management system that runs the pump at 12 volts for low load conditions and 14 volts at high load conditions.

Keith

jb95gst · Mar 5, 2004

Fourdoor said:
The EVO has a fuel management system that runs the pump at 12 volts for low load conditions and 14 volts at high load conditions.

Keith

well i kinda had the right idea, just wrong

lol
JB

2g GSX Engine vs Evo Engine

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