baller4

I want to begin buying parts for an upcoming turbo set-up and im still wondering about the ideal turbo. Like most b16 owners id like alot more torque at the low end, but i understand that a smaller turbo (T3, T3/04e, T25) will be less efficient in the higher rpm's of a b16. I want boost under 4k but also dont want it to die off above 7k, whats the best all around option for a b16?

Peter H

What are your power goals? Stock Engine?

For a stock B16, I believe the GT28RS is a fantastic turbo, and should fulfill your needs just fine.

baller4

thats a good question, haha i suppose i should have stated all that. The motor is stock i would be happy in the range of 240-280 whp. Nothing too crazy.

BoostedEh2

t25 small?yes

T3 is not small....
T3/t04 is definatly not a small turbo

t25 will die in the upper RPM but a decent sized t3 or even t3/t4 will NOT die in the upper rpm, not on a honda anyways

Peter H

Here is a quick GT28RS compressor map I made up for the stock B16:



Red line:
- 15psi @ 8200rpm = 29 lb/min
- 15psi @ 4000rpm = 14 lb/min

Blue Line:
- 10psi @ 8200rpm = 24.5 lb/min
- 10psi @ 4000rpm = 12 lb/min

chris_v2

gt28rs is a great turbo..

pretty pricey and if you buy used you cant rebuild them. But its a great turbo to use for a street setup

Tyson09

iTrader: (1)

just curious, how come you cant rebuild them?

Azxster

What about this one?

Garrett T3 super 60, 42ar/.48ar combo or .42ar/63ar combo , please state which one during sh

I want low end power for my stock B16. I am sick of driving in the city it pisses me off and makes me wonder why did I even choose a B16 because the motor is so powerless unless I rev high.

Where do you guys recommend a relatively cheap, good quality log manifold? I am considering one from SPooling Performance. I would prefer AC and PS compatible.

baller4

keep the advice coming, it all sounds good, i am on a budget and something readily accessable would be nice. Also what size injectors would i have to run with a 240-280whp goal in mind?

BoostedEh2

450's at the least

chris_v2

with such a small turbo to hit 280whp you'll need a decently high amount of psi (plus im sure he'll want to hit 300-320whp as well. Anyways, the harder the turbo works the less efficient it is and the hotter the charge will be. It's best to go with a bigger turbo than a smaller. There are things you can do to help spool a larger turbo quicker. The only reason I recommend t3 super 60's is if the customer wants to soly lap the car and needs to constantly be in boost..

Not that a gt28rs is a way larger turbo than a t3.60 but it will definately take more out of the turbo to make 280whp than a gt28.

Azxster

Ohh.. sorry to threadjack but I was posting for myself, I am looking around 200WHP at a relatively low boost for city driving.

Peter H

For your reference, here is a Super 60 compressor map with calculations for a stock B16:



Red line:
- 15psi @ 8200rpm = 29 lb/min
- 15psi @ 4000rpm = 14 lb/min

Blue Line:
- 10psi @ 8200rpm = 24.5 lb/min
- 10psi @ 4000rpm = 12 lb/min


If all you want is 200whp, and low end power, the .48 A/R exhaust housing will serve you best, but keep in mind, you will start running out of breath at higher rpm's.

I think you should also consider the fact that Honda engines, for the most part, are designed to be revved high. By using a small turbo all you are doing is transferring peak turbo efficiency to low rpms. This may sound fine, however, since your B16 is designed to make power at high rpms, all your doing is making your turbo efficient where your motor is not. You shouldn't try to change the design of your B16, but work with it's advantages, and size the turbo properly. Otherwise you will make mediocre low end power, and just when your engine wants to truly shine, your turbo becomes nothing but a restriction blowing hot air.

And lastly, please be wary of whom you buy a Super 60 from. There is a T3 Super 60, and the T3 60 trim. They ARE NOT the same thing. The Super 60 is a fairly rare turbo, so 90% of the "Super 60's" you see out there are in fact 60 Trim's. The folks who sell them mistakenly call them Super 60's because it sounds cooler.

akira

If your buying injectors go big, you will want to make more power than your stating right now that i promise, If anyone were to ask me what to buy id tell them 680's minimum they'll idle just as well as 440's 550's and have lots of room for you to grow.
You should just get a standard t3/t4oe with a small ar.