ek4lb

hi i hope all is well. Im luc, from Ireland, new to the site and currently building my boosted ek4.
Basically im looking for a turbo that will give the car decent driveability, the car will be my daily driver and im hoping to get around 320-350whp. something that will spool up well and have a bit of breathing room if i do want to squeeze a bit more out of it.

im building a b16a2,
stock sleeves
fordged rods and pistons.
b16a head with c4 cams and dual valve springs
Skunk2 pro series im
Tial 38mm wastegate
tial 50mm bov
hondata s300

ive been doing some research and have come down to a few turbos which i think are ideal for what im looking for;

ball bearing turbonetics T3/T04B
Garrett GT3071R
Precision 5557 .57 trim



Would you go for any of these or would you recommend a different one for what im looking for?


quite new to the world of boost, hope ive made sense!

Thanks alot

Luc

Schister66

Your choices span a fairly large power range, but any of them will do. I wouldnt personally buy a Turbonetics turbo, but that's me. The Precision 5557 is going to be too big for a street driven b16 with a 350whp goal. The GT3071r would be excellent...i have no complaints other than price. If you can stomach that, you have a winner.

Another option for you to consider: Hunter Turbocharger
I ran a variant of this turbo back in the day and loved it. The Hunter would be first on my list if i was building your setup with your power goals.

ek4lb

thats super thanks! my local shop can get me the garrett for 700 + vat. so all being well i think ill go for that by the time i get the hunter to the spec its costing almost the same to go ball bearing... take it its an american company?

DC4KiD

iTrader: (4)

I had the same goal with my '94 Civic VX. Turbo choice I went with was a Garrett T3/T04E Stage 3 60 Trim. Spools up much better than what I had anticipated. Here's a quick break-down:

- B16A2 81.5mm stock sleeves
- SRP 9:1 Pistons with H-beam rods
- '98 US-Spec ITR cams
- Super-tech dual valve springs with Brian Crower steel retainers
- Spoolin' Performance ramhorn manifold & 3" down pipe to a full 3" exhaust
- Edelbrock Performer-X intake manifold with stock OEM throttle body
- 1000cc Delphi injectors
- TiAL 38mm WG and GReddy FV BOV

Tuned on 15-15.5 PSI with 91 octane pump fuel. 342 WHP and 333 FT-LBS of torque (torque dropped down to 264 FT-LBS highest throughout the power band). Love this set-up, it's quick spool, and power for street driving.

Dyno video

ek4lb

thats a sweet set up! do you think the itr cams make much difference over stock?
is the turbo ball bearing?

DC4KiD

iTrader: (4)

It is a standard journal bearing turbocharger. The ITR cams made a huge difference. With the stock B16A2 intake manifold, cams, and cast iron Blox/EMUSA turbo manifold on 16 PSI, I put down 275 WHP and 200 FT-LBS torque. I have the dyno sheet some where. I'll scan and upload it once I find it.

Shaun_

I ran a stock sleeve b16 with 390whp pump and 640whp on race fuel.

Eagle rods
Cp pistons
gsr cams
victor x intake
precision 6262
1000cc injectors

ek4lb

thats some difference! how did the journal bearing hold up?thanks very much for the info!

DC4KiD

iTrader: (4)

Not sure what you meant by asking how did the journal bearing hold up...?


I found the dyno sheet from a few months back when the car was tuned with stock B16A2 intake manifold, cams, and cast iron Blox/EMUSA turbo manifold on 16 PSI (91 octane also).

ek4lb

i think im right in saying the journal bearing turbo doesnt spin quite as smooth, and doesnt have the same response as ball bearing? just wondering about the lifespan of the journal, if you ever had any issues? thats an impressive difference! especially for mostly bolt-ons.
What software did you use?

ek4lb

640! how did the block hold up with that?

DC4KiD

iTrader: (4)

No, you're right, journal bearing turbo response is a little slower when compared to a ball bearing unit. This particular turbo that I have in the Civic is only a few months old and only has about 300 miles on it (along with almost everything else drive-train related in the car), so it's holding up just fine. Life span of a journal bearing just depends on type of oil used, maintenance (dirty/unfiltered oil), and just usage/wear and tear itself (launch control/building boost while staging will wear the turbo out faster). To give you an idea, I have a T3/T67 journal bearing turbo that I purchased new back in December of 2009 that is still running and pushing 33 PSI in my Integra till this day.

Geis

Turbos are expected to last 100s of thousands of miles, journal or ball bearing, as long as you take care of them.

ek4lb

aaaaaa right ok! just a bit of up keep.
Do people ever run a seperate oil to the turbo? a return line to a small resevoir in stead of using the engine oil??

TheShodan

iTrader: (14)

Get to know the basics first if you're asking questions like this.
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https://honda-tech.com/forced-induct...aq***-1024174/

Design and Function of a Turbocharger - Bearing system | BorgWarner Turbo Systems

Design and Function of a Turbocharger - Compressor | BorgWarner Turbo Systems

Design and Function of a Turbocharger - Turbine | BorgWarner Turbo Systems

ek4lb

sorry man, all very new to this. Thanks alot! really helpful links there!

Geis

There you are!
Haven't seen ya in weeks. Snow plows need turbos or somethin?