evo turbo???

[pushnlacs]

hey what up??? i just thought about something. the turbo on the evo can produce 350whp or so and spools up and hits full boost by 3500rpm with the restrictive stock intake and exhaust air flow, so i was thinkng that turbo or one with the same specs would be perfect for a sr20det with my 400 crank hp goal cause with after market exhaust and all that itll spool up even quicker and practicly have zero lag.

so i was wondering a evo turbo could be fitted to the sr right?? or what after market turbos have the same specs???? its garret that uses mitsu turbos right?? i dont really wanna use garret(thats kinda conterdicting) so a turbo with the same specs would be perfect.

[msaskin]

You'd need a custom manifold. Part of the reason the evo spools up so quickly is that stock it uses a twin scroll turbo, which requires special channels inside the manifold. It also uses a mitsubishi TD05 turbine housing, so you'd need a custom manifold to bolt it up, plus a custom o2 housing.

Also, what are you talking about with garret & mitsu? They both make turbos, and are competitors of each other. The evo turbo is a Mitsubishi 16G, more correctly, an Evo 16G in the DSM world.

Also, you can't begin to compare spool times between two different engines...the volumetric efficiency of each is dramatically different.

If you want spool approaching that and to make 350rwhp, the GT25/40R .64ar is probably the right choice. Costs about $1000 from full-race (or many other vendors) And bolts to the stock manifold.

~matt

[pushnlacs]

alright my bad, i meant greddy uses mitsu turbos. and yea all engines will push air diffrent but its all about displacment really 2.0l pushes so much air 3.0 pushes so much ect.. u can pretty much expect the response of an engine by its displacment and by makeing sure its set up and tuned right any 2.0l can spool as quick as a 2.0l can. so pretty much my point was that using a turbo of the same specs as the evo turbo and the right mods u could have a 400hp sr20 with full boost befor 3400rpm

[Hijacker]

even different style 2.0L produce different volumetric effencies. To say that a 4G93 (base mitsu lancer engine) can flow as well as say an SR (both are 2.0 litres) is quite wrong. VE dictates how fast an engine can spool a turbo. If two identical displacement engines have different VEs (75% versus 90%), the 90% engine will outperform the 75% engine. This all falls to headflow. Mitsu has massaged the 4G63 out of the Evo to flow amazingly well. If there's one thing that is hard to compare between companies, and is a mapping held tightly by the factory, it's head design. Head design is an art as much as it is a science, and when a company falls into a good design, it's very reluctant to let other companies know it.

If you could retro fit a 16G onto an SR, you would see a definite performance increase, but it would cost more than its worth.

I've been in an Evo running 19-20 PSI, intake/exhaust, and a remap on the ECU by Al from Vishnu Tuning. The car was fast, but my next to stock SR wasn't far behind it. He pulls on me during a quick drag, but not as much as I had expected.

[pushnlacs]

so your saying the sr flow even better than the 4g???? if you are thats coll with me.

[msaskin]

so your saying the sr flow even better than the 4g???? if you are thats coll with me.

The 4G63 in the DSM and the SR20 probably have fairly similar flowing heads. The EVO 4G63 probably flows better than the SR20.

Mitsubishi is pretty well known for leaving next to nothing on the table with their head designs. I've been working on 3000GT's and DSM's for years now and both of those platforms see essentially NO gains from headwork.

~matt

[Hijacker]

so your saying the sr flow even better than the 4g???? if you are thats coll with me.

i never said that. if anything the G63 flows better than the SR. Matt's right in that Mistu tops out their flow designs pretty well from the factory.

[Movingviolation240]

If they had the same bore and stroke, cam profile (lift and duration) head design, valve design, intake and exhaust manifold design then you could compair. Otherwise the numbers will be different.

Ever hear people talking about how a 3SGTE will spool up a big turbo? It's the same size as an SR.....

This is in the same boat as the "Boost is Boost" arguement. (a T25 at 20psi is moving as much air as a T51R at 20psi).

Just swaping cams can have a dramatic effect on when boost hits. A Greddy intake manifold will add lag, a nice equal length tube exhaust manifold will add spool. There are just to many variables, I mean cam timing can have a big effect, if you retard your ignition you will get boost sooner due to the "live charge" in the exhaust. You can run a car richer or leaner.... there are a LOT of variables.

look at other SR's, I was the first guy on here to have a GT25R, mine was a .64 and had a REALLY nice torque curve. It wasn't spooled fully at 3500rpm but it didn't have to be, it was already making sick torque by that point. The S15 turbo is another great one, or a .48ar turbine SC50.

Also consider the divided entry tubo in the Mitsu limits peak flow, so your killing high end effency for low end gain. It's also good to note that the stock Evo exhaust is pretty damn good as it sits. The O2 housing is already 'big' and divided (DSM guys use them as upgrades all the time). So your not going to be a lot ahead of them with your factory stuff.

Last point, the Evo turbo wouldn't fit anyhow, it is 'backwards' so to speak from the way turbo's are useually mounted. The 'tang' is on the other side (if that makes any sense). Basically if you topmounted it insted of hanging away from the motor (as a normal Garrett turbo would) it would be hanging into the valve cover. They had to make it like that for packeging constraints in the EVO.

Hope that helps clear this up a little

PaulOrlando, FL

[pushnlacs]

hey tenka, mabey u just worded it wrong but u did say it in a way that made it sound like the sr would flow better.

"to say the 4g93 flows as well as say a sr would be quite wrong."