Hello, I have a 1994 Honda Civic Coupe, I put an R type integra engine in it ... the engine is completely forged!

here is the complete setup:

DARTON 84mm shirts
MANLEY I-BEAM connecting rods
MANLEY piston
Reinforced MANLEY piston pin
OEM HONDA conrod and crankshaft bearings
OEM HONDA oil pump with TODA RACING gear
Bronze FERREA valve guides
FERREA 6000 valves
CROWER titanium springs + cups
Camshafts oem B18C6
SKUNK2 adjustable AAC pulleys
HONDA distribution kit + oem water pump
ATI 1-way crankshaft pulley (alternator)
COMPETITION CLUTCH STAGE 4 clutch (4 damped ceramic pads)
HONDA oem flywheel
HONDA high and low engine gaskets kit
Balancing of all mobile crews
Cylinder head, lower engine, valve seats and combustion chamber grinding
S9B gearbox with TORSEN oem HONDA

HONDATA separate coil ignition
Calculator P28 with S300 V1
AEM pressure gauges (AFR, EGT, P oil, T ° oil, P turbo)
Boost control HKS EVC-S
Bosch ID 1500cc injectors
"Mini" Wire tuck
Fuel pump 320l / h E85 DEATCHSWERK

SKUNK 2 MEGAPOWER RR complete line (76mm)
MISHIMOTO large volume aluminum radiator + HIGH FLOW fan
MISHIMOTO 19-row oil cooler
Thermostatic MISHIMOTO sandwich plate
LR BLOX expansion vessel
Clutch line HEL
Oil catch can 6 outputs B&R
HONDA oem rocker cover with 4 breather
AEM fuel rail with adjustable AEM pressure regulator
Custom fuel supply with K-TUNED filter
Rail fuel pressure gauge


currently I have this turbo setup:

Turbo KINUGAWA TD06 25G Twinscroll with internal wastegate and liquid cooling
Custom KRC exhaust manifold and downpipe
Large volume intercooler RMD
KRC custom turbo piping
Dumpvalve HKS SSQV 4

the turbo is not too bad, but it is an old generation (journal bearing). the trigger time is a bit long (5000tr).
it is currently at 1.6 bar pressure. and I am at 400-450hp.
it is a mitsubishi lancer evolution 9 turbo normally (twinscroll)

now I would like to put a new generation turbo! I hesitated to take the same on ball bearings ...
But I came across the precision 5558 gen 2 turbos which are rated for 650hp ... which interests me greatly
I would like the turbo to trigger very early and hold the pressure well up to 9400rpm!
in power I aim between 500 and 550hp

What do you think ?

 

I honestly wouldn't use a Precision turbo on anything that you intend to get longevity out of.

BorgWarner EFR 7064/7163, or Garrett GTX3071 would be what I would look at.

 

agreed, if you go with the gtx be sure to get the Gen2

 

I had to eliminate the gtx30 because I find it a little big for my engine no? it will trigger late i think ... what do you think?

 

For your power goals a GTX30 would be a good option, and a lot of people have used those turbos in conjunction with the B18.

Spool would be reasonable but it's ultimately up to you, and how you drive the car, as far as how quick you want the boost to kick in. Search online for "B18 GTX30 dyno" and you'll be able to find a lot of results from how the pairing works. With your current cams and displacement, unless you're running a super low compression ratio the spool IMO would be pretty good.

 

I have the gtx3071 Gen2 on a b18c and spool time is very quick. Boost starts under 3k rpm and is at 17psi by about 3800-4K rpm. I was actually playing with my tune the other night and when I was brake boosting at 2500rpm and wot I managed hit about 2.5-3psi

Here’s my dyno to give you an idea of the power curve

This is with a recirculated wastegate and a 3” cat. The 3071 is rated for 650hp I believe but on pump gas I would think 5-550. The 3076 I believe is rated for 750ish?

im not too familiar with the EFR series but from what I’ve read/heard they’re tough to beat when it comes to spool times.

 

I'm sorry, but none iif those turbos are rated for anything remotely close to what you're stating. A lot of misinformation is being stated here. y'all gotta be careful when making guesses like that...

 

 

What would you recommend, then?

 

Ive never used a precision but ive seen nothing out there that would push me away from them.

 

I know people personally making 650whp on gtx3076 with race fuel

 

Their JB units are mostly what I would stay away from.

 

Is that based on opinions from this website or somewhere else?

 

I only ever see this website dismiss them

 

I personally had a 5558 JB that had a CHRA failure after only about 3K miles on the car. Sent it out and had the whole thing rebuilt and rebalanced by Majestic Turbo in Waco, only for the wheels to start making housing contact again after 2-3K more miles. Since then I haven't tried to run or use another Precision.

It's entirely possible I either had bad luck or there could have been something that went wrong with the install/rebuild on the turbo, but I haven't had those same issues with BorgWarner Airwerks or Garrett turbos. I'd also had Majestic Turbo rebuild turbos in the past and their work was always great, so I'm hesitant to say they messed something up as well. My experience seems to line up with what some other people here have had with street driven JB Precisions.

 

You wont find anything that makes make 550 hp and spools as fast as a 7163 twin scroll.

 

These are rated to Brake Horsepower, and not to the wheels.. The interesting thing about the Garrett Motion descriptions is that they overrate their turbocharger capabilities and underrate their intercoolers. You need to account for 15%-18% driveline loss for that.


I'm really familiar with the engine setup that this person is using. But he needs to make up his mind of the purpose of the car, and not just worrying about 9400rpms, which is wouldn't make any power anyway on an OEM B18C6 camshaft. Is this street power performance, or drag racing? Has he seen what 600hp to the wheels on an FWD car is like? I doubt it.. I'd stick to something a bit smaller with a bit better midrange for the European roads. Especially if staying on pump gas fuels. Stick with the GTX3071R Gen IIs, Banshee, and GTX2971Rs.

I'm sure you did, for a very split second of peak power at the very top rpm range on high-knock resistant fuel... The N111 60mm turbine wheel was never designed to hold that power over those pressures for long. Not at 25lbs/min rated turbine wheels.

 

I agree and thought about that as well, but I've given up on hounding users for basic info like that so was just responding based off the criteria set. My daily job is a lot of user support who put in total half assed tickets and emails, so I spend enough time begging people for more info.

A GTX29 is an interesting thought.

Edit: I think Balor has a good idea with a twin scroll EFR as well.

 

[QUOTE=Chance EG;52453369]Pour vos objectifs de puissance, une GTX30 serait une bonne option, et beaucoup de gens ont utilisé ces turbos en conjonction avec le B18.

La bobine serait raisonnable, mais cela dépend en fin de compte de vous et de la façon dont vous conduisez la voiture, en ce qui concerne la vitesse à laquelle vous souhaitez que le boost se déclenche. Recherchez en ligne "B18 GTX30 dyno" et vous pourrez trouver beaucoup de résulte du fonctionnement de l'appariement. Avec vos cames en cours et le déplacement, à moins que vous utilisez un super rapport de compression faible la bobine OMI serait assez bon. [/ QUOTE]


​​​​​​​ok, actually reading you, I think I'll take a gtx3071 or 3076 gen 2 ... I still have to define my choice between these two turbos! if you have any advice I am interested

 

[QUOTE=piggy96;52453443]J'ai le gtx3071 Gen2 sur un b18c et le temps de spool est très rapide. Le boost démarre à moins de 3 000 tr/min et est à 17 psi d'environ 3 800 à 4 000 tr/min. Je suis en train de jouer avec mon air , l'autre soir et quand je assistance au freinage à 2500rpm et WOT je parvins taperait 2.5-3psi

Voici mon dyno pour vous donner une idée de la courbe de puissance

est avec un wastegate recirculé et 3” chat . Le 3071 est évalué à 650 ch, je crois, mais avec une pompe à essence, je penserais à 5-550. Je crois que le 3076 est évalué à 750ish ?

je ne suis pas trop familier avec la série EFR , mais de ce que j'ai lu / entendu ils sont difficiles à battre quand il vient à la bobine fois. [/ QUOTE]

thank you ! your graph is rather nice so the turbo blows at 17 psi?
what fuel do you use?
i am wondering if the gtx3071 will be enough for a power of 550hp ... even if i set my car with E85 fuel and has 23-24psi ... i dont know.

 

[QUOTE = Balor_Gr; 52453821]. Vous ne trouverez tout ce qui fait faire 550 ch et bobines aussi vite que un rouleau double 7163 [/ QUOTE]

I already have a twinscroll T4 setup (mitsubishi lancer evolution 9) with a td06.
But I think for our B series which is an ultra sharp engine! the twinscroll does not work ... in addition the T4 seems a little too big: /
that's why I was thinking of going on T3. I think I could not have a turbo trigger before 4500rpm on B18

 

TD06 turbine wheel : 58/67 - efr 7163 turbine wheel 56/63 (plus a good ~40% lighter because of material)
TD06 cpmpressor wheel 60/78 - efr 7163 compressor wheel 57/71

Td06h-25g is ~10% bigger turbo. The efr will be a LOT faster to spool.
Id say td06h-25g is simmilarly sized to efr 7670 and efr7670 spools faster from td06h-25g
Id say twin scoll makes up for the low-mid range honda are know to be on the low hp side.
If you want to go to t3 open from twin scroll id say your only hope is .92 a/r G25-550. It will make 500 hp and will have sharp on/off because of the very small size-> very low inertia.

 

so the efr is smaller than the current turbo i have on my engine at the moment, that's not what i'm looking for ... because i'm at 1.65b of pressure and i'm at 460hp.

I would get the same power with a gtx30 but at 1b of pressure ... therefore more reliable.

 

Correct. For that size turbocharger and use for the B-series engine, an open T3 is a simpler option with the most benefit. Keep the A/R on the turbine housing to a .63A/R and you're golden.

 

F’in Garrett lol. Not sure why that went over my head being bhp rather than whp but makes total sense. So even at a 15% loss the gtx3071 MIGHT squeeze out 550 whp. And I’m assuming that would need to be e85 or a race fuel?

[QUOTE=jonga11;52454867]Thanks, yes that’s at 17psi and 93 octane pump fuel. With E85 I’m sure you can get close to your goal. The only thing I can think now realizing what @TheShodan pointed out is that might be pushing close to the limits of that turbo.