Break these Chinachargers down for me.
 

As you may or may not know my turbo is on it's death bed.
https://www.miataturbo.net/forum/t32958/#post384559

So the search begins. I haven't seen ANY decent sized Garrett turbos for sale any where. I came across these two Chinachargers.

Take a look and tell me...

What it compares to (Garrett wise)?
Would you run it at 15 psi?
Do you have any experience with it?

I know there's a couple of guys around here using Chinachargers.
Which one do you have?
How long have you had it?
What psi are you running?

eBay Motors: GT28 GT2870 Turbo Charger internal wastegate .86 A/R @@ (item 110363791909 end time Mar-20-09 21:42:15 PDT)

eBay Motors: Drift T28 GT2860 S13 S14 Upgrade Turbo Charger .49 AR (item 120392174832 end time Mar-21-09 19:58:51 PDT)


TIA
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considering you have a built motor (thats nicely built i might add) it de carefull going the "cheap " route. You did that with the head studs and look what happened in a short while. you narrowlly avoided disaster there.

I've seen some 2871s sell for around 800 on ebay... I'd venture down that route. Then again, I've never tried a chingchangcharger.

Would I want this? eBay Motors: GARRETT TURBO CHARGER GT28RS AR60/AR .86 DISCO POTATOE (item 200321235523 end time Mar-23-09 18:47:50 PDT)
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I think this is the one. eBay Motors: GARRETT GT28R NISSAN S15 TURBO /S13 S14 SR20DET SILVIA (item 300259701812 end time Apr-15-09 21:40:28 PDT)
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I don't particularly like that the second one has no specs posted. First one looks like a good sizing. .86 AR may push your spool back a bit unless you've got some headwork.

I email them for specs. No headwork so how much spool loss should I expect?
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1.6? I run a 2871 with a .64 AR exhaust. I think my graphs were showing full song by 4500. Maybe if I had a 1.8 or a redline higher then 7200 I'd probably go with a .86.

Cool thanks. How much boost you running?
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2871 .64, built bottom end, stock head. 17 lbs on the charts.

https://www.miataturbo.net/forum/t26984/

Forgot about that. Must be a blast to drive?

This similar to yours? http://cgi.ebay.com/ebaymotors/GT287...Q5fAccessories
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Takes forever to spool so torque is pretty low, I bet his car sucks off the line and is just as fast as any other turbo miata with a 2560 when doing highway pulls.

Looks like it, except I paid like 750 used for my 2871R

I've had a greddy 15g, a SR20 t25, and now the 2871. The 2871 is by far my favorite turbo as far as just driving enjoyment. The t25 spooled great, but it just felt like it died out hard up top. I do wish I'd have tried a 2860 though, as those seem like the ideal sizing.

Thoughts?

eBay Motors: HyperGear ATR28 450HP T28 Turbocharger CA18det SR20det (item 200290342562 end time Apr-19-09 02:39:46 PDT)
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Do you realize you will only have 2500 rpm of use able powerband if you get a turbo this big?

You arent driving a honda with a 9000 rpm redline that actually makes power past 7000rpm unlike our shittastic engines. This turbo is gonna annoy the hell out of you.


Ask Hustler how much he loves his 2860. Even with his 1.9l and his 99 head, he makes full boost by like 4200 rpm. You shoulda tried a GT2560. Proven 300whp and 270 torque and supercharger like spool characteristics.

Who other than paul? who has an absurd flow exhaust mani and a begi intake mani strapped to his high flowing 99 motor?

Tell me please, because my 2560 isnt making anything near that kind of power.

Artie. 275hp 250 torque I think with a regular 99 intake manifold.

Don't make the 2560 sound like the holy grail. Those cars are 1.8s and rocking the better flowing heads not to mention pauls IM. I personally didn't try the 2560 because it did not correspond with my end power goals. The turbo choice (the point of the thread) depends on Levnubs ultimate power and spool goals. If he wants very fast spool, yes I agree a 2560 is the way to go.

I'm used to 2554 spool but I will sacrifice some spool for more top end. I live in FL so everything is straight roads/highways. Id like to be around 250 whp, so.....
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A 2500rpm usable range is all you need if your upshifts drop you no more than 2500rpm, technically speaking. Usefulness to a particular person is, of course, subjective.

Those are too much money to be experimenting with. Since you need to retune anyway, I'd go with a significantly larger turbo. Spool is overrated even if I say so myself, you dont need anything below 3500 rpm.

I agree with what hustler's trying to say below whilst speaking like a man.......We need to clearly delineate spool from lag. i'm starting a thread when i feel like it.

spoken like a true track virgin.

to be perfectly honest, I have to agree. I'd much rather have a strong topend than fast spool. then again, some people in here like to be full boost by 3k so...I'm not a track junkie though

Spoken by someone with a 2500rpm full boosted range.

[QUOTE=Newbsauce;384674 I do wish I'd have tried a 2860 though, as those seem like the ideal sizing.[/QUOTE]

HaHa thats what I dropping on mine ;)

You dont have to be a track junkie to appreciate fast spool. I like to have a larger useable powerband, even if it hurts the HP numbers.

im using an sr20 t28 ebay special, but to unforeseen circumstances, its currently loaded with garrett big t28 internals. spool is slow, but dayum, theres plenty of top end pull. i think im around 10psi on stock internals. finally got it running right, now my clutch is dying. so no dyno yet.

Someone forgot to tell my turbo that it's supposed to "fall off" on the top end.

Attachment 207334

I plan on getting my gt2860rs tune cleaned up soon...like this may. :cry:

too bad it makes no torque...lol.

so where is the other 25 hp and 20 tq?


If i were to do it again, i would have gone with a a 2871, or at least a 99 head with an intake mani+ absurd flow exhaust mani.

Looks like the 2860 with the smaller A/R is where I want to be. Now the question is would you buy this ebay special or go for the $800-900 name brand one?

eBay Motors: Drift T28 GT2860 S13 S14 Upgrade Turbo Charger .49 AR (item 120392174832 end time Mar-21-09 19:58:51 PDT)
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I would be the other person running absurdflow exhaust manifold, downpipe, and exhaust. Im making 275rwhp and 263 torque at 15psi. Full boost by like 3200 or 3400. I forget the actual number and am too lazy to look it up right about now. The difference between my setup and Paul's is that hes running a 99 block while im running a 95 (different compression). He also has a Begi intake manifold with a 70mm mustang TB while I am running a gutted 99 intake manfold with stock TB (still gave me 11 hp and 1 tq). His intercooler setup is also a lot nicer than mine and shorter.

http://www.miatamx5.com/dynoruns/11-...e_vs_artie.jpg

Need your opinion fellas. Want to but something asap. Would you try the ebay special for $300 or spend the extra $600?

Garrett GT28R Turbo - Garrett GT Series Dual Ball Bearing Turbo Charger
Garrett GT2860R
Turbine -Wheel: 53mm w/ 62 trim -Housing: .64 ar
Compressor -Wheel: 60mm w/ 60 trim -Housing: .60 ar



eBay Motors: Drift T28 GT2860 S13 S14 Upgrade Turbo Charger .49 AR (item 120392174832 end time Mar-21-09 19:58:51 PDT)
Drift T28 GT2860
Compressor Wheel
0.60 A/R Cold Side
Ind: 42.50 mm
Exd: 60 mm
Trim: 50

Turbiner Wheel
.49 A/R
Garrett 4 Bolt T25 Flange
Ind: 52.90 mm
Exd: 45.47 mm
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Bump
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Probably a dumb question, but why does your torque curve fall so quickly?

---------

Phil, try the ebay sepcial. Worst comes to worst you sell the turbo for half of what you paid and you gain experience that you can share with the rest of us. If I was in your shoes I would do just that.

IDK, brother. The pics didn't show much detail in the ads, either. I was looking for casting quality as an indicator (possibly a poor indicator), but that's hard to tell from those little pics.

Without a name brand or reputation, you are just rolling the dice with either one. Pick one. Your call. I don't know, but is that one a real Garrett? Hard to believe the price.

Because of the restrictive(even after gutting) factory intake manifold. Here is the same setup but with a better flowing intake mani(red line). Artie's is the green line.

http://www.miatamx5.com/dynoruns/11-15-08/top3_tq.jpg

Dang, that IM made a huge difference.
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Do this. Garrett OE quality. A Garrett guy looked at this and told me it's the same thing they call a GT2560. Couldn't understand how these guys are selling so cheap, unless Ghosn just said, "Get all the NOS parts off the books."

The Nismo Shop : West Covina Nissan : Nissan JDM T28R Turbocharger :: S15 Silvia

I'm taking the chance and going with the buttsecks turbo.

eBay Motors: Drift T28 GT2860 S13 S14 Upgrade Turbo Charger .49 AR (item 110365735015 end time Mar-23-09 12:04:37 PDT)
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NICE.

Be sure to take it apart prior to installing it and get real measurements of the wheels. I wanna know which turbo its closest too.

sweet. let the countdown begin....lol

Signed up for SCIENCE!
Make sure you wear a labcoat when it gets delivered.

If I were going to go the Chinacharger route I would call up BEGI and order one from them. That way you will be getting one from a supplier they trust. Otherwise I would get a Garrett.

I say this because I just finished installing my latest turbo and GODDAMNMOTHERFUCKINGSHITCUNTHELLBITCHBITEASS is it difficult to get at and tighten all of the flange bolts. It took hours. I even had to chop up a combination wrench and create a special tool to get at some of them. I would gladly pay a little extra to get a known reliable turbo than to have to remove/replace a cheap $200 turbo when it failed.

I would have liked to go that route but the only thing they have now is the 2854 and I dont feel like waiting around for them to get anymore or atleast tell me they cant. Flange bolts aren't that hard imo.
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Thats the diff between 1.6 and 1.8's.... I hate mine too, and feel the same way about having to swap turbos...

edit: just noticed your avatar, might as well have a rainbow flag waiving from the antenna :greddy:

Then give it back. :fawk:
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I think it would have been a lot easier (S4 tubular manifold) if the T25 flange bolts (mani to turbine inlet) were through-bolted instead of studs with nuts. If I have to take it off again (never again if I can help it) I'll ask BEGI about it first and drill out the threads if it is kosher.

It was a frustrating motherfucker for me, more so than the cast manifold IMO. But two things that made it tougher were the larger compressor housing (2871) and the placement of the wastegate bracket due to how I have the compressor clocked for my setup (not the way BEGI normally does it). The hard part is over with though. The rest of the fab and assembly will be more enjoyable.

Have a look at this one. The dyno read out is not bad, I think its what you want to run.

http://www.digi-hardware.com/images/...kai240rwkw.jpg

http://cgi.ebay.com/ws/eBayISAPI.dll...m=190296328597

Have a look at the post dates before you post, noob. I appreciate the searching that led you to this thread, but bumping a 2 month old thread isn't appreciated - especially one that was time sensitive to start.