Sorry for the noob question i'm a noob to boost. Anyway I have a Ceramic Ball Bearing Turbonectics t3to4b super v compressor wheel stage 3 turbine wheel .63 A/R (turbo not install yet still breaking in the motor) and was wondering if this turbo will reach my 350-400 hp goal or do i need to go with a bigger turbo? The set up

GSR head
Skunk2 im, Maxbored 65mm tb
Evo 560 inj, BDL fuel rail and fpr
CTR cams, Skunk2 valvesprings and retainers
ARP head head studs

GSR block
SRP 9.5 comp pistons
Eagle rods

B16 tranny

Turbo stuff
Spoolin quick 4 manifold
tial 44mm wg
3 inch dp with 3inch exhaust
2.5 inch charge pipe
Fullrace backdoor fmic with tial bov mounted on there
Hondata 4 bar
Greddy profec b boost controller

 

TO4B will make 400whp at 25+psi. TO4Bs efficiency is quite low and would be blowing lots of hot air. With the GSR block u should achieve tha goal but those injectors may be pushed to their limit way before u reach that goal. I made 404hp on a B16 block with a TO4B as yours at 31psi. Good Luck...

 

Damn 31 psi! Thats crazy! My realistic goal is 340-350 on 91 oct

 

t04b wont get you there reasonably

and you injectors will get you to 325 safely, thats it

 

I did some reading and a lot of guys said 300-350 should be fun on the street i think that's all I'm really looking for enough power to have fun on the street and probably some auto x in the future

 

T04B describes the compressor cover and not the actual wheels inside. No different than saying "T3/T4". WHICH ONE?

I've got plenty of to4b covered turbos that make over 500 without breaking a sweat. it depends upon what he has.

 

I'll be happy if this turbo and inj makes 325 and not max out. Thanks guys

 

mac, i didnt feel like typing out super v, lol

 

Super v compressor wheel

 

Yeah, you could do 350-400whp out of that. those are about 50lbs/min, but tend to surge at higher pressure ratios.

 

What did you mean by surge at higher pressure ratios? Sorry for the noobie question

 

Essentially hate life

 

basically.

the turbo will do it, but thats its limit

you can get another turbo that will make the same power at a more sane pressure ratio.. with a much cooler air charge.

 

Thanks guys

 

560s are way too small for 400whp, as for the compressor, i have the precision journal bearing version of the exact same turbo. curious what you get and where power comes on. i'm split on just using it or selling it and buying a 57 trim e cover

i couldn't find any dynos with a gsr or itr and the .63 ar, stage 3 exhaust b cover turbos, most the b covers i've found dynos on are the tiny .48 housings

i did find compressor maps though on a similar garrett

http://www.turbofast.com.au/FlowTO4B.html

and the 57 trim e cover

http://www.turbofast.com.au/FlowTO4E.html

from what i gathered on the b18c1 or c5 it starts getting inefficient and surgy around the 375whp mark, under that it's a quick spoolin little dude

 

this is the map for his wheel



and this is quick math on how it will look aiming for 400hp

 

how do you figure this exactly? curious how you could take an engine like the b18c and calc out 300, 325, 350 etc whp on this map. end goal of course being to see where the turbos best used

never have 100% grasped how you can place a map with an engine.

 

we did it, it made 376hp 224tq on 26psi with a 48a/r ex. a log manifold it ran perfect ur injectors are not enough in my book we had 750cc an they were maxed out it can be done no problem

 

simple math... take a few rpm points (peak rpm, peak power rpm, rough spool point for pressure reference), calculate a rough ve, figure out flow rates for those given points and drop them on a map.

 

so if we had a stock itr that went into fuel cutoff at 8500-8700, peak power at 8000-8100, goal was 300whp, how do you figure rough spool even if we used a guessed VE of say 95% ?

 

well, i would do math for 4th gear. i would assume a properly sized turbo with cross positive pressure around 3500ish, full boost by 4000 max.

some people plot each rpm point across the map and go from there. it works but its a lot of extra work, once it reaches full boost, boost drop off and recovery between shifts is minimal...

on a 57 trim it would look something like this (quickie) and based on what we know of t04e response its pretty close



i use squirrel because its fairly close, has a lot of maps and is pretty spot on. if i want to get more detail/accuracy i do it by hand

 

of course i could be way off, but my math has always seemed to work lol.

mac?

 

Pretty decently done, wantboost, one has to account for any pressure drop from the intercooler and then add that amount in your pressure ratio curve on the Y-axis, and account for ambient operating temp. I keep a specific program that Pete created (not that turbocalculator crap that's online) to make a better determination as to how the pressure ratio readings are made. (Though No car has even a close to a 95% VE for the entire rpm band, so never use that as a number).

But yes, 375whp can be done using the .63A/R under 22psi of boost pressure. Its a nice little piece but does have its limits under 400whp. The design of the wheel is a bit antiquated compared to a 57 trim, but was a nice in-between the 50 and 57 trims turbochargers. Just don't use that .48A/R on a B16

 

my buddy had a t3/t04 turbonetics turbo and made 378whp out of it in his civic hatch on high boost for at the track so you could make that power with that turbo

 

yea, for a quickie its pretty close.

when im serious i do my own math and compare. i figured about a 1/2psi drop across the intercooler, which should be about right... a lot of things can change that number though.

i also figured IAT into those numbers, roughly.. i used 95 for peak power and rpm and i think started somewhere in the 80s