ScottyP3821

iTrader: (2)

Many 2871s I've seen can be had for even less than the 2560r. Just need to locate the right dealer. When I use to work parts we could get a 2871 for less than the 2560. Some sellers pass on the savings to the consumer.

DNA54

For a silvia replacement I mean this particular one : T25 T28 T25/T28 TURBOCHARGER NISSAN 200SX S13 S14 TURBO | eBay

just to boost the car again until I finally got €€€ enough for a bb gt2560r

TURBINA TURBO GARRETT GT2560R SU DOPPI CUSCINETTI 330 CAVALLI ORIGINALE garrett | eBay


I know that there is a little price difference between the 2560 and 2680, but I'm scared about driveability (it's my daily car).
2860+long tube manifold equals late spool? As it is now the car is undriveable, as the boost comes only after third gear and 5k rpm...

18psi

iTrader: (76)

a proper 2860rs or 2871r reaches peak or near peak torque between 3500-4000.

So no, it would not be laggy. And would put out close to 350-400whp

It's not the same as your chinacharer, despite the similar nomenclature

DNA54

that's a good thing.

this is a choice I have to make once. This is why I was looking for a 2560: good for maybe 300hp but with good power under 4k rpm, just a little bit chocked at high revs.

I'm so unsure, even for the choice of the temporary chinacharger

sav's 2011 opinion https://www.miataturbo.net/diy-turbo...10/#post771119

18psi

iTrader: (76)

the bottom line though is you can't really compare chinacharger to the real deal in terms of spool and torque onset. they're quite different. looks like you're injector limited anyway though

Corky Bell

If not a competitive event, the 2560 is a pretty sweet all around turbo.

corky

DNA54

this is what my brain told me, but my body wants the 2860... I've not deceided yet...

Indeed. the rx8's are 100% opened from 4500 rpm until redline.

next step are ev14 610 or ID 750 (I haven't choose yet) and dw200 or similar pump

Btw, a few days ago I understood why the boost was too late and was too low on the dyno: the wastegate itself was stucked open
chinachargers...

Hammer + screwdriver and it's (more or less) working again. 1.2 bar from 5k rpm on. Good power and torque btw, virtual dyno says near 300hp.

downside of the medal: yesterday night when I was wot on 4th gear (remember: 6 spd + 3.636 torsen) and went in full boost suddenly I heared an awful cracking noise, the rpm went from 5k to 7k instantly and the shift **** jumped to neutral on her own...

this was the noise:


towed the car, and today I inspected...













well... f**k.

90civichhb

iTrader: (5)

Time for an RX7 carrier housing!

timk

I feel sorry for you mate, you are having a lot of trouble with this car!

Out of interest is it your own work pit?

DNA54

A friend of mine gave me another housing, if it fails again I have to do something...
Is the rx7's housing pnp? including the diff mounts.




I'm sorry, english isn't my first language.. what are you meaning?

90civichhb

iTrader: (5)

Sorta, there is minor work that needs to be done to run an RX7 housing, but if you break another housing you will either have to gusset another Miata carrier or go with an RX7 diff. Unless you want to spend some big money on something else more robust.

ScottyP3821

iTrader: (2)

How the hell are you breaking housings like that?

Leafy

iTrader: (1)

wheel hop, or too much powah.

timk

You seem to have lots of interesting equipment, a hoist, a pit, lots of open space. Is that at your workplace?

DNA54

Got it.
Sadly my workplace was just the open space, but a friend of mine lent me his pit for two days, just to build the exhaust line. Everything else was make without a garage, under the sky...
One day, maybe... I will buy a garage.

DNA54

Finally I made my choice...
GT2560R with inconel shaft.
-turbine .60 cold side, .62 hot side A/R
-51mm (2") inlet/outlet flanges (garrett ones)
-0.9mm oil restrictor
850 shipped

I have to adapt someway the feed line, because now is a banjo bolt one, but nothing difficult.

I also find another housing, but I'm waiting for the side oil seals for over a week!

DNA54

Joe Perez

iTrader: (8)

That seems like a lot of packaging for one little restrictor.

DNA54

yes, indeed.
I paid a lot for that restrictor, but they included a turbo for free

DNA54

I noticed that this topic becomed a "build" one... Can it be moved in the media section?