Looking for some input.

[seattleshawn]

So its taken me over a year but my build is almost complete. Today I dug my Evo III 16g turbo out to do a rebuild on it and noticed the turbine housing cracked all to hell and back. How I missed that when I tore the motor down Ill never know. I planed on upgrading my turbo at some point but not this soon. Here is how my motor sits as of now. Manley rods, Mahle pistons (.020 over), delta 272 cams, revised lifters, stock intake, head is ported and polished. Evo III exhaust manifold and 02 housing (both lightly ported). 3" GM mas, denso 660 injectors, Apexi N1 turbo back and tuning will be done thru V3 link. I would like to see somewhere between 425 and 475 HP on pump and I know thats a stretch for a 16g. Not sure if I should just replace the housing and call it good or look at another turbo, I really don't want to spend more than 600 on a new turbo though. Give me some input guys.

Thanks

 

[tsd123]

If you wanted another turbo. Maybe a hx35 in the bep housing for that power. That or maybe a 20g.

 

[JusMX141]

Evo III 16G's have a high-nickel cast turbine housing; in 7+ years of rebuilding, I've yet to see an actual Evo III turbine housing crack. The bolt holes strip like hell, but the housings do not crack.

That in mind, you either don't have an Evo III 16G, or your Evo III doesn't have the factory turbine housing on it.


You'll need something in the 55-60 lb/min range to easily get to your HP goal....there are plenty of good turbos available in this airflow range.

 

[seattleshawn]

Evo III 16G's have a high-nickel cast turbine housing; in 7+ years of rebuilding, I've yet to see an actual Evo III turbine housing crack. The bolt holes strip like hell, but the housings do not crack.

That in mind, you either don't have an Evo III 16G, or your Evo III doesn't have the factory turbine housing on it.


You'll need something in the 55-60 lb/min range to easily get to your HP goal....there are plenty of good turbos available in this airflow range.

Well I know its an true evoIII 49178-01470 is the number stamped on it. Housing has a casting # of 78-11020, not sure if its a original housing or not.

Some pics

 

[JusMX141]

^ Not the original Evo III turbine housing.

Actually, it's not even a 7cm housing at all....it's a 14B's 6cm turbine housing that someone ported the inlet of to 60mm. You got hosed on that deal unfortunately.

In all honesty, that cracking is not that bad at all. However, you'll never reach your HP goal using an Evo III 16G with a ported 6cm housing on it.

 

[seattleshawn]

^ Not the original Evo III turbine housing.

Actually, it's not even a 7cm housing at all....it's a 14B's 6cm turbine housing that someone ported the inlet of to 60mm. You got hosed on that deal unfortunately.

In all honesty, that cracking is not that bad at all. However, you'll never reach your HP goal using an Evo III 16G with a ported 6cm housing on it.

Its actually worse than it looks, it goes thru the waste gate. For the amount of money I have spent so far, I wont run it. I didnt really get hosed though, its the turbo that came on the car and I only paid 400 bucks for the whole car. He said it didnt run and he didnt know why.... It was out of gas! Im starting to lean toward a PTE SCM44. I have to do some more research though, I dont understand how they can have turbos rated form 460 to 600+ HP and they are all the same price