What is wrong with the 3076R or the BB 50trim? I figure they would be the ultimate street turbos for someone sticking with the stock bottom end and 500WHP or less? Wouldn't they be better for daily drivers?

 

maybe you need to read a little closer. but i will expand just for you.
small 16g flows 505cfm or 34lb/min
big 16g flows 575cfm or about 38lb/min
18g flows 600cfm or about 40lb/min
evo 3 16g flows 625cfm or about 42lb/min
evo 8 16g flows 625cfm or 42lb/min
20g flows 650cfm or 43.7 lb/minute.


there are three different 16g wheels coming from the dsm line of turbos. the evo8 is reverse rotation and is a mirror image of the evo 3 16g dsm turbo. but who on this board really cares about the dsm turbos anyway. only the 20g wheel is worth knowing about since it is the only one that flows more than the evo16.

 

holy .....you guys are killing me. The shop is ready to order me the turbo and i told him to wait another day. I already paid for it. I think both you guys are truly knowledgable......But it doesnt help me get it right the first time!!! Thanks for the input......i dont want a monster turbo. Just total effeciency at 425-450 HP. If i get a GT, ime outa cash for the injectors and wastegate. Freaking FULL-RACE stuff is expensive......but NICE!!!!! So 50 or 57.....or get another POS 35r.........

 

IMHO, a GT3071 is what you want. If price is an issue then go w/ a 50trim over the 57trim. As TedB stated, the surge on the 57 trim would be aweful on an EVO.

 

lol! poor ray!

 

Not true. Look at an FP Red. I know many people that have this turbo and It makes great power at higher boost. There is a guy in Huntsville I know that has run 10's on this turbo in a full weight street car. He runs 30psi. I had another friend that made 540whp with a red at 24psi. He made 440whp on pump gas at 18psi. I ran a T3-T4, 60-1 stg3 on my Galant and was very strong. It didn't spool until 4.5k though which I thought was a little laggy. Full boost was around 5k. That being said it was also on my turbo E36 M3. With stock compression at 10.5:1 and boost a 8.5psi it made 385whp. I'm not arguing that theoretically it's for low boost high compression because it does kick *** for that. I just saying that from what I've seen, specs on paper don't always dictate real life.

 

Yes, it is true, because it was designed by Garrett specifically to be that way:

http://www.pagparts.com/Garrett_Turb...ype=t460-1trim

Your argument is like saying that because someone made good power with a 2.5" exhaust on an EVO that it's equal to a 3", and that isn't the case.

Does it mean that the turbo cannot deliver good power? No.

Does it mean that a better suited turbo will give better power potential at the same settings? Absolutely.

One can only know what he has and cannot know what he's missing . . . unless of course he makes a swap and sees the difference.

 

x2... eighter keep it stock or go big, all the middle turbos are a waste of time IMHO.

 

What is wrong with using the GT30R namely the 3076R and the 3071R? People are making good spool and the 76R makes 500WHP on pump and alky?

 

Absolutely nothing. I dont understand the 'go big or dont upgrade at all' mentality. Some of us want moderate power levels (400-500whp) without the lag of an enormous turbo. This is something that the 50 trim and GT30 series turbos provide.

 

IMO it all depends on the intended use of the car:

stock 2.0l block - Evo IX turbo, 3071 are good upgrades, especially for street use/road racing. The 3076 is somewhat laggy and 35r and larger are really laggy.

built 2.0l block - 3071 is almost too small, runs out of steam up top (i.e. past 8000 rpms). The 35r and 42r can really shine for drag racing on this platform - as demonstrated by AMS and others.

2.3/2.4 stroker - street/road racing: 3071 will spool really early, very potent as RRE has demonstrated. A 3076 and 35r are also very potent. Hell, anything short of the stock turbo is potent on a stroker.

l8r)

 

Exactly, which is why i'm leaving it stock and saving up for the GT35R.

 

Sean IV is running past 8500 on a stock Head stock bottom end Evo VIII with a 35R.


I still have my heart set on a GT3076R and getting a nice power band from 4000-8000+

 

I've got my fuel cut set to 9100 rpms right now and have run the turbo to about 9000 rpms on occasion, but with the stock gearing and how fast the 3071 falls off, it is pointless to rev past 8200 rpms.

That should be no problem at all. Pick your cams wisely, though.

l8r)

 

272's ok? They are already in.