levnubhin

iTrader: (30)

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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leatherface24

iTrader: (10)

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.

Newbsauce

iTrader: (2)

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.

levnubhin

iTrader: (30)

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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levnubhin

iTrader: (30)

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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Newbsauce

iTrader: (2)

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.

levnubhin

iTrader: (30)

I email them for specs. No headwork so how much spool loss should I expect?
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Newbsauce

iTrader: (2)

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.

levnubhin

iTrader: (30)

Cool thanks. How much boost you running?
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Newbsauce

iTrader: (2)

2871 .64, built bottom end, stock head. 17 lbs on the charts.

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

levnubhin

iTrader: (30)

Forgot about that. Must be a blast to drive?

This similar to yours? http://cgi.ebay.com/ebaymotors/GT287...Q5fAccessories
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Saml01

iTrader: (9)

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.

Newbsauce

iTrader: (2)

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.

levnubhin

iTrader: (30)

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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Saml01

iTrader: (9)

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.

thesnowboarder

iTrader: (15)

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.

Saml01

iTrader: (9)

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

Newbsauce

iTrader: (2)

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.

levnubhin

iTrader: (30)

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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sixshooter

iTrader: (12)

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.