What turbo?

[streetsound]

How big turbo can i drive with out getting to much turbo lag?i have forged pistons and rods, ported header, tomei cams, camgears valvesprings and other nice stuff.gonna run on about 25psi and going for over 400whp.anybody with experience on gt3076r for example.(if my english writing sucks, Im from Norway Thanks fro all help

[float_6969]

Are you wanting to stick with the stock turbo manifold? Or are you willing to upgrade to a tubular?

If so, I'd have a divided top-mount manifold built and run a Holset HX35 w/a divided inlet.

[streetsound]

I dont have the stock manifold.I have a topmount without split.I was thinking about running a garrett gt3076r with T3, 86a/r v-band.I know I am gonna have some turbo lag but hopefully not to much.So thats what I am wondering.Can I use the 3076r or will there be to much turbo lag?

[mbmbmb23]

I dont have the stock manifold.I have a topmount without split.I was thinking about running a garrett gt3076r with T3, 86a/r v-band.I know I am gonna have some turbo lag but hopefully not to much.So thats what I am wondering.Can I use the 3076r or will there be to much turbo lag?

Too much lag with that turbo on a 1.8L, I would do the 3071 .63 a/r if you are looking at that family of turbos.

[streetsound]

any experience?

[mbmbmb23]

any experience?

Not personally with that turbo. Those turbo's are too new and pricey for most CA18 guys on here to "try" out on a whim like the SR20 guys do. Try http://www.sxoc.com to see if guys have that turbo there....I know there are some guys with gt2871's over there.

[dash]

too expensive to "experiment" with a GT30. I'd be absolutely sure before you pull the trigger.Enough CA18 combinations posted online, for one to make a good assessment.

you won't find a better performing or responsive "400hp" turbo than a plain old t3/t4 50-trim, or a 20g-td06, for the street imo. Cranked up (approaching 2 bar), a 20 can go well past 400..... a 50 can/has gone beyond 500hp

'hypergear' on ns.com offer an impressive 400hp turbo (@24psi), verified by dynos and video on a track CA18.

Heck, even an ebay t3/t4 can hit 400+. LOTs of CA18s have put up impressive numbers with chinese turbos - dyno & ET.Street car on sxoc for example; stock CA18 + nistune + ebay t3/t4 = 350hp(1.3 bar)Not the path most would recommend, but many of us out here run 'em. Taboo I guess.Its like bangin the ugly chick next door. Not somethin' you talk about, but u enjoy the ride all the same - lol

[streetsound]

to expensive you say.I got the money so that is not a problem.The question is:Are the gt3076r too big for this engine .Have anyone tried this turbo on ca18?I want as much hp as posible (safe)Gonna run on water/methanol injection

[CakeEater]

You say you want as much HP as possible yet you don't want lag....

Those two things can't be done easily. Big HP means your going to have big lag.

Stick with a 50 trim T3/T4 and run 20-25 psi. With proper tuning (the only way your going to get the safety your after) should yield awesome power and lag will be fairly low.

I'm using that turbo and I love it, 18 psi at around 3700 rpm and it feels really good. More than enough for me. I'm going to lower it to 15 psi this year because I'm searching for traction as it is.

[dash]

then buy it, try it... since money is no prob, and you're obviuosly bent on getin the 3076 regardless. We're just mentioning turbos that will outperform it at a fraction of the price.

this may interest you; http://www.sxoc.com/vbb/showthread.php?t=423613

or u can search the dyno thread; http://www.sxoc.com/vbb/showthread.php?t=142254

most impressive street miata 1.8L I've seen, & posted links on this forum.He also ran pump fuel + injection. Hit a record 585hp, when he relaced his 3076 with a 50trim

[SkinnyKibbles]

I believe my buddy runs a T25 or T28 on his CA. Look him up, Liquid Neon

[CakeEater]

^ Where did you see us talking about a T25/28?

Haha, much larger turbo talk here.

[SkinnyKibbles]

^ Where did you see us talking about a T25/28?

Haha, much larger turbo talk here.

Just throwing it out there lol

[streetsound]

-rebuildt engine with forged bottom-ported header with tomei cams 260-270, 8,80 lift, valvelifters, springs, ajustable camgear,-garrett gt3071r 86a/r gt v-band-tial 35mm external wastegate-topmount manifold-TOMEI valvesprings-spittfire coils-power enterprise belt-1000cc injector dynamics -apexi power fc-1,4mm headgasget-water/etanol injection-18 row oilcooler-lightent flywheel-iridium spark plugs-1,6-1,8 bar -custom plenum with 75mm throtle body

1,8 bar

how much whp is posible with this?anything else i should ad?

[boost_boy]

-rebuildt engine with forged bottom-ported header with tomei cams 260-270, 8,80 lift, valvelifters, springs, ajustable camgear,-garrett gt3071r 86a/r gt v-band-tial 35mm external wastegate-topmount manifold-TOMEI valvesprings-spittfire coils-power enterprise belt-1000cc injector dynamics -apexi power fc-1,4mm headgasget-water/etanol injection-18 row oilcooler-lightent flywheel-iridium spark plugs-1,6-1,8 bar -custom plenum with 75mm throtle body

1,8 bar

how much whp is posible with this?anything else i should ad?

Nice list of mods, but all worthless if it isn't properly set up or tuned. Poorly tuned, at or around 265whp at X amount of boost. Decently tuned, 310ish whp at x-amount of boost and properly tuned at or around 400ish. All of these are guesstimates, figures will vary and a 0.86 A/R will surely get you all the lag you'll ever hate.

Dee

[streetsound]

I am going to spend much time on maping so that will not be a problem.hoping to get over 400whp.anything i should ad to get better preformance?

[HyperGear]

CA18Det with JE Forged PistonsPerfect Seal ringsHyperGear ATR28G4 with .86 Rear housingHPVA 38mm external gateTomei Procams 270Duration with 11mm Lift Cams Tomei Valve springsTomei Adjustable cam gearsBosch ignition setupSard 800CC Fuel injectors Z32 Air flow meter, NisTune ECU 600x300x76mm Front mount Intercooler3inch Turbo back exhaust Ported and polished engine head with 2nd butterfly throttle removed2.5inch Throttle body. Nistune ECURunning 98 Fuel

344rwkws / 461rwhp @ 24psi dyno tuned on 3rd gear.



Video:http://www.youtube.com/watch?v=nfxcsFpLE8c
Modified by HyperGear at 7:20 AM 1/17/2010

[Nyborg Garage]

CA18Det with JE Forged PistonsPerfect Seal ringsHyperGear ATR28G4 with .86 Rear housingHPVA 38mm external gateTomei Procams 270Duration with 11mm Lift Cams Tomei Valve springsTomei Adjustable cam gearsBosch ignition setupSard 800CC Fuel injectors Z32 Air flow meter, NisTune ECU 600x300x76mm Front mount Intercooler3inch Turbo back exhaust Ported and polished engine head with 2nd butterfly throttle removed2.5inch Throttle body. Nistune ECURunning 98 Fuel

344rwkws / 461rwhp @ 24psi dyno tuned on 3rd gear.

Modified by HyperGear at 7:20 AM 1/17/2010

That sounds like a real nice setup.

But you do have a bit strange power curve considered the big cams you have.I would have expected the torq curve to look something like your power curve with such big cams.

Do you have a pic of the torq curve? You must have a massive amout of torq at about "100-120mph".Btw, do you know what the rpms are at the start and the end of the curve?

I guess a Torq curve like that is perfect for drifitng, and that is some real nice driving to!

[meminto]

I didn't realize tomei produced a cam with 11mm lift for the CA18..

Last I checked it was 10.25mm in a procam..

Was it a custom make for you?


Modified by meminto at 3:08 AM 1/18/2010

[float_6969]

He did that in 3rd gear, so be wary of the numbers. It also looks like they couldn't get a tach signal, that't why there's no TQ curve, or RPMS on that graph.

That looks like an inertial dyno, so making a pull in 3rd gear will give falsely high results.

Remember, HP comes from TQ, and gears are simply TQ multipliers.

[HyperGear]

3Rd gear on a CA does not give you more power. then will peak identically amount of power. Plus you car does not "create" its own energy.

This is my Daily CA18det sil180 car's got:CA18Det with 20thou Oversized Forged Pistons ATR28G4 .64 rear housing internally gated256Duration with 8.9mm Lift Cams 700CC Power Enterprise Fuel injectors Z32 Air flow meter, NisTune ECU HPVA CA Front mount Intercooler Kit HKS Slient power 3inch Turbo back Exhaust. Running Mobile 8000 (98) fuel Fully standard engine head with 2nd Butter fly throttle.

Dyno tuned on 4th gear:

Want to see more?
Modified by HyperGear at 5:37 PM 1/20/2010

[1.8turboterror]

What size AR. do you have on the exaust turbine and what power do you make and where does your power drop off at what RPM?

[1.8turboterror]

Where does your turbo start to spool up at?