looking to put a mitsubishi eclipse turbo set up on my b20b was hoping someone had done this before also might know what i needed to do. any modds? that stuff. thanks

 

Yes it has been done before, most stock DSM turbos are too small for our Honda motors. B series motors out flow 4G63 motors. What turbo do you have or are planning to use. Something like a TDO5 or a 14B is way too small. If you have a TD05HR that would be a decent turbo to use. A Garrett 50 trim is a good turbo choice for your B20. More info is need here though like power goals, motor specs ect.

 

Not the non mivec evo motors, head flow is dead even between b16 and 4g63 heads but a dsm outflows a non vtec head like a madman

But any older dsm turbo like a 14b or t25 is pointless. A big 16g would be a decent choice

 

Don't those turbos have weird mounting flanges and its a PITA getting a manifold or you have to buy adapters and stuff IE just get a garrett 50 trim or someting.

 

From what I recall, people tend to use a T25 manifold when using those turbos. Yes, a flange/adapter is required and the compressor has a bend on it. I would not even bother.

 

NVTurbo is correct, the Eclipse turbo is a T25 as the turbo but does not use a T25 turbine inlet flange., they use a radius flange.

Standard T25 turbine inlet flange



Mitsubishi radius flange for T25




Mitsubishi T25 turbo with J-pipe adapter (sorry for large pic)

 

Adapter plates from t3/t25 (standard) to dsm 4 bolt are cheap

 

Its not the costadapter that's the problem. (well, it sort of is, because they have such a thick flange it pushes the damn thing down to an unreasonably low level). But now he has to custom integrate the Mitsu downpipe flange to work with the chassis. that's even worse.

The top is the Mitsubishi turbine housing style. the others are the T3/T04 "traditional" 4 bolt and 5 bolt housings



You might be willing to work with that flanging system, but not so many are as dedicated as you are when simply using something a bit more reasonable would be in order for the OP.

 

The nice thing about all mhi turbos is the wastegate is divided from the turbine outlet. Dsm turbos have always had fairly rock solid boost control provided you don't route the wastegate into the turbine outlet

 

IF you stayed with the IWG setup. Otherwise, Punishment racing makes separated 02 housings to take advantage of the "divorced" wastegate system just like the Subarus



and Extreme PSI which allows dumps to atmosphere



But by the time he goes through all that, he could use a better turbo altogether and avoid the hassle.

 

Eh? Why is it I always see Evos running 30-40lbs of boost to hit the same numbers as a Honda with a similar setup that only needs 20-25?

Just some random example I pulled off of google. My stock LS head is pretty much next to him in terms of power/lb of boost

http://www.supraforums.com/forum/sho...-Built-600-WHP

 

Simple. Cylinder head design flow rate and Camshaft efficiency. The Evo 8 and even 9 guys look at b-series VTEC heads and go apeshit over the fact that those cylinder heads are much more efficient compared to theirs. They even see Type R camshafts are rather "aggressive" for a stock car.

The thing they have going for them is a very efficient turbo from the factory with a wonderfully geared transmission (For their 5 speed GS-R) combined with that AWD transfer case . The MR, not so much.

But they also run a completely different turbine inlet and outlet and turbo sizing than the DSMs.

 

I get that, Im arguing wantboost's post about 4G63 heads being the same as VTECs

 

honestly figment wise works out very well.
If AC wasn't an issue , you could use a stock turbo DP elbow too.

My fab guy did this for for fun on his auto integra.

 

If someone started producing more of those manifolds it would be a great option. I think a 16G would be perfect for stock setups

 

Tig-Art in Isreal and a few other European companies did it. In America, though, to do it costs money that many aren't willing to spend to integrate it properly.







http://www.tig-art.com/web/8888/nsf/...ng=EN&SM=15057

 

I have a Evo 9 turbo on my B16. it's well worth it.

 

In terms of straight flow numbers of a non mivec evo 8 head vs a b16 head (both stock)
The b16 head has a 50cfm intake advantage over the evo. On the exhaust side the evo flows 50cfm more than a b16. So with just flow numbers it's a crap shoot

Comes down to combustioj chamber design, valve size, port design, cams, etc

I'll be using a custom evo8/9 based turbo on my super response torque build and you'll see the difference in heads first hand

 

The nice thing about the evo 4-9 turbos is they are true twin scroll and with a proper manifold the setup has unbeatable response for a street car/circuit car and makes gobs of torque from 3000-4000 and holds it almost to redline. You'll make almost as much torque as you do power (30-50ft lbs difference)

I'm currently working on a wicked custom billet 20g wheel and larger turbine wheel for my evo 8/9 turbo that should be absolutely wicked for my dd/mountain run/ road course car. The goal is to keep up with amd or lap faster than our 600rwhp track prepped z06

 

I agree but for the cost of a ramhorn, I doubt that many guys looking for sub 400whp will want to pay for it cause it would be more cost effective to use a T3 cast manifold with adapter flange.

that car was parted out and my buddy has the manifold. Going into his oldschool integra.
Belive it or not, this car was donated from Acura dealership to the University of Minnesota back in 1986..... and it only has about 100 miles on it .... dunno what they used it for.















Stock gsr (oem header/intake & exhaust).... 150whp lol
...turbo should make this car a little more interesting...

 

If you do get an evo turbo, get the Evo 9 turbo. it is way better then the 8 or previous years.

I have an Evo 9 10.5 housing. it is honestly ( in my opinion ) the best turbo you could choose to make good power on stock engine.

and yes spool up is really quick.

 

The 9 only has a larger compressor housing, they did this because the 4-8s had surge issues.

It looks like your fab guy took a map 4g oem replacement mani and put it on a b series flange

 

I believe the 9's have a larger compressor side and Turbine side

 

Nope
Same wheels just a larger compressor housing

 

Sorry I didn't mean actual wheel I did mean just the compressor housing