GT2871 USERS. SR motor

[s14fbs]

pbm hmic does not block air flow to the radiator my water temp dropped 15-20 degrees from the fmic i ran on hot days

[dopplganger1]

Huffandpuff^^^ I have an Isis manifold now but still have my stock one. And I've seen you're setup list and have been waiting for you to get it running to see the results especially since your local. What shop is tuning yours?

For the hmic from what I've read it should be fine and also given that up here we have generally cold weather that should give some aid right? and also if I'm running e85 combustion temps will be lower also and shouldn't that help even if I am bringing in air that's a lil hotter?

[dopplganger1]

Towlie- how much clearance would you gain with the mid mount outside of the core? Because I've had an Isis intercooler and a mishimoto both front mount and have been able to tuck them up pretty well I had to make my own brackets for the mishimoto but I still had to much piping imo

[towlie]

Originally Posted by dopplganger1

Towlie- how much clearance would you gain with the mid mount outside of the core? Because I've had an Isis intercooler and a mishimoto both front mount and have been able to tuck them up pretty well I had to make my own brackets for the mishimoto but I still had to much piping imo

I don't have anything specific in mind yet, I've always ran eBay ic (yeah whatever) and it sits completely terrible.. I just wanna make it so it sits nice and high off the ground.. Up past the headlight brackets if that makes sense

But I figure it shouldn't block airflow to the rad becuase air can still flow behind it

I'm buying some metal brackets from summit and ill figure something out lol

[EsChassisLove]

Originally Posted by s14fbs

pbm hmic does not block air flow to the radiator my water temp dropped 15-20 degrees from the fmic i ran on hot days

Congrats your Coolant temps went down. The thing about that is, either way they will rise, and your fans will take over.

What you don't know is your intake temps are through the roof.

Ask me how I know.


It's a shitty IC. Period.

[di-devol]

Originally Posted by towlie

I was set on the PBM HMIC until I started doing homework.. It looks like an ideal concept, but it seems to limit airflow to rad :/

Zach, once your cars running youll have to give us an extended review

I will proabably purchase ebay/cxracing fmic kit, flip it upside down w/ custom brackets so it sits nice and high (ive already destryord one and dented another with the shit brackets they include), then jimmy up the piping for shortest possible length.

Best of both worlds imo.. cost efficent, stupid massive core, nice position, and low pipe length

like this kindof (except outside the core support)



Thoughts?

I ran mine like this remember? Coolant temps were really high, i built that shroud in the front to try and battle that. Mine is still upside down, but not so close to the radiator. Alot better.

[towlie]

Lol nah I don't remember but ill have to look closer next time I see you car.

You get it back from psi yet? Aem solve your issues? What kind of numbers u put down?

[di-devol]

I'm using a ka aem ems on an sr, so they had a little bit to work on. It's running, they did cold and hot start maps, dyno in the morning. I'll post up.

[towlie]

That's kinda funky but use what you got right lol..

I hope this solves your a/r issues

Sounds promising tho

[di-devol]

before


now

[huffandpuff00]

this was my original mid mount setup before switching to oem fan/shroud. it would get warm, but never over heated. its what i made 330whp/315tq at 18lbs with.

this intercooler and pbm hmic are around same total cubic inces, pbm placement just puts it out of airflow. ducting can fix that.

[di-devol]

A sidenote, adding an oil cooler droped coolant temps alot too. Drifting without was 230+, drifting with one it's hard to get to 210.

[EsChassisLove]

I'm going to use my GReddy core and have it fabbed up to be the same concept as PBM, with the pipes shooting straight back, but it's going to be a front mount. Where it belongs.

My coolant temps with the PBM actually ROSE.

[MedHat240sx]

Anyone know where to get a t3 exhaust housing with a internal wastegate with flapper for a GT2871r?????

[di-devol]

And clutch friiiiiiiiied.
The high tq number is from the spike when the clutch slipped. couldn't go any higher without the loop-da-loop.
16 lbs of boost.

[KA240SX808]

ATPTurbo

msglnt

[huffandpuff00]

Dang you have the worst luck with clutches!

[towlie]

Yeah man that ic is exactly what I had in mind.

[di-devol]

Actually it's the same clutch as before. When we thought it was slipping, it was actually the gt2871 compressor wheel grinding the housing lol.

[jdo180]

need feedback !!
mods....
late model 180sx blacktop
gt2871r .64 t25 style housing
power fc w/ map
apexi head gasket
arp head studs
stock exhaust manifold
tomie outlet
full exhaust
fmic
new valve guides and seal in head
stock bottom end
stock cams
1000cc injectors
91
16psi

300 and 289 torque

sound about right for 16pounds or should i find another tuner???

[boniomario]

Originally Posted by jdo180

need feedback !!
mods....
late model 180sx blacktop
gt2871r .64 t25 style housing
power fc w/ map
apexi head gasket
arp head studs
stock exhaust manifold
tomie outlet
full exhaust
fmic
new valve guides and seal in head
stock bottom end
stock cams
1000cc injectors
91
16psi

300 and 289 torque

sound about right for 16pounds or should i find another tuner???

do you have a fuel pump and FPR for the injectors?

sounds in the region but I know for a fact you can get more out of it, closer to 350 if the tune is done right

[Def]

Originally Posted by jdo180

need feedback !!
mods....
late model 180sx blacktop
gt2871r .64 t25 style housing
power fc w/ map
apexi head gasket
arp head studs
stock exhaust manifold
tomie outlet
full exhaust
fmic
new valve guides and seal in head
stock bottom end
stock cams
1000cc injectors
91
16psi

300 and 289 torque

sound about right for 16pounds or should i find another tuner???

Sounds roughly in line for 16 psi on stock cams. Get cams - the stock ones are really mild and hold the power back around 300 rwhp big time. 16 psi is also pretty low boost, run more if you want more power.

If you really want the "big boy" dyno numbers, be prepared to deal with phantom knock at all times, and serious knock when it gets hot and you wail on the engine. There is no free lunch when it comes to "good dyno numbers" - as more timing will make more power on pump gas, beyond where knock starts.

It doesn't take skill to tweak up the timing to unsafe levels, it takes skill to know when to stop and say "this is safe, and beyond that will not be safe when you drive the car hard because your EMS designed in the 90's doesn't have much in the way of safeguards and advanced trim maps."

Originally Posted by boniomario

do you have a fuel pump and FPR for the injectors?

sounds in the region but I know for a fact you can get more out of it, closer to 350 if the tune is done right

Never getting 350 rwhp out of a stock cam SR and a .64 2871R. He does need a fuel pump (I would assume it's done with 1000 cc injectors), but not a FPR.

[codyace]

Originally Posted by EsChassisLove

Congrats your Coolant temps went down. The thing about that is, either way they will rise, and your fans will take over.

What you don't know is your intake temps are through the roof.

Ask me how I know.


It's a shitty IC. Period.

Preach On!

I tried telling people this forever ago, yet the drifters wanted to banish me to cool guy island hah.

Edit: Seriously though, I think most gains people see with the PBM High Mount is due to upgrading from a really shitty core, to a less crappy one.

Originally Posted by jdo180

300 and 289 torque

sound about right for 16pounds or should i find another tuner???

Sounds about right for stock cams. Put a set of JWT S3 or S4's, or HKS 264s or Tomeis, and you should make an EASY 50more whp.

[boniomario]

Originally Posted by Def

Sounds roughly in line for 16 psi on stock cams. Get cams - the stock ones are really mild and hold the power back around 300 rwhp big time. 16 psi is also pretty low boost, run more if you want more power.

If you really want the "big boy" dyno numbers, be prepared to deal with phantom knock at all times, and serious knock when it gets hot and you wail on the engine. There is no free lunch when it comes to "good dyno numbers" - as more timing will make more power on pump gas, beyond where knock starts.

It doesn't take skill to tweak up the timing to unsafe levels, it takes skill to know when to stop and say "this is safe, and beyond that will not be safe when you drive the car hard because your EMS designed in the 90's doesn't have much in the way of safeguards and advanced trim maps."



Never getting 350 rwhp out of a stock cam SR and a .64 2871R. He does need a fuel pump (I would assume it's done with 1000 cc injectors), but not a FPR.

Right I did not see that his AR was 0.64 with stock cams ... do what ^^^ he says or what Codyace says and you will get there

[dopplganger1]

Why the 1000cc injectors with that power? that seems to be over kill even if you ran E85

[di-devol]

Originally Posted by dopplganger1

Why the 1000cc injectors with that power? that seems to be over kill even if you ran E85

lol, comes down to "why not?"

[K_style]

Originally Posted by di-devol

lol, comes down to "why not?"

Of course.

There is never "Over Kill" on injectors.

having 1000cc injectors doesn't mean you are running full 1000cc all the time.
Always good to have bigger injectors so you won't max out.

[Seraphim38]

Of course there is overkill on injectors: too much injector and the ECU can have problems getting it to idle as it dishes out too much fuel even when dialed back as far as possible.

Apexi Power FCs don't like low impedence injectors and don't like injectors over 800cc, unless they are Injector Dynamics. (I have IC1000s and at my last dyno session, 340rwhp, 18 psi, 342rwhp, 51% was the max duty I ever needed). Now that I have upgraded from my 2871, we'll see if I can max them out

I bought 1000cc top feeds anticipating that I could move up to a larger turbo later without having to buy new injectors. It turned out to be a good idea...

[jdo180]

thanks for all the feedback guys..

and yes i am running a walburo pump with a nismo adjustable fpr..
was wanting to run the 2871 at 19-20 pounds hoping for 335-350 with my set-up ... sound right?

and im running 1000cc because im going to be running e85 mid summer
just running 91 now..

and ya after reading thought this tread all day ill have to do some cams before switching fuel types..

[cotbu]

At 16psi you should be around 320 minimum, i tune 93octane an see this regularly with very little work and stock cams. The stock cams usually bang out around 330-335 when boost is turned up to 17-17.5psi, running the 2871r, 555cc or larger and z32mafs. I know that with just an intake cam(256) you can hit 350. I know some new enthusiast choose for me to tune this setup, because the vacuum is still strong with the stock exhaust cam.
It's now my recommendation for 350-370 power range. After a year or so, you'll be wanting more anyway.

My bad you have the gt28r compressor housing, never really pushed that housing on a 2871r, so maybe it flows like the gt28r? if that's the case you are actually right were you should be.