2g GSX Engine vs Evo Engine

[Phatty95GSX]

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]

Originally posted by Phatty95GSX
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]

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]

Twin-Scroll baby!!

[Claudius]

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

[Slow White]

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

[12secEVO]

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]

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]

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

[bpclements]

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]

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

[Fourdoor]

Originally posted by L2RTSiAWD
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]

Originally posted by spln_hrd
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]

Originally posted by spln_hrd

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]

Originally posted by Fourdoor
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?