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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.
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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... |
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 |
Originally Posted by 18psi
(Post 1232466)
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 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 :crx: sav's 2011 opinion https://www.miataturbo.net/diy-turbo...10/#post771119 :magna: |
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
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If not a competitive event, the 2560 is a pretty sweet all around turbo.
corky |
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Originally Posted by Corky Bell
(Post 1232643)
If not a competitive event, the 2560 is a pretty sweet all around turbo.
corky
Originally Posted by 18psi
(Post 1232622)
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
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 :facepalm: 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 knob jumped to neutral on her own... this was the noise: towed the car, and today I inspected... https://www.miataturbo.net/attachmen...ine=1433150517 https://www.miataturbo.net/attachmen...ine=1433150517 https://www.miataturbo.net/attachmen...ine=1433150517 https://www.miataturbo.net/attachmen...ine=1433150517 https://www.miataturbo.net/attachmen...ine=1433150517 https://www.miataturbo.net/attachmen...ine=1433150517 well... f**k. |
Time for an RX7 carrier housing!
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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? |
Originally Posted by 90civichhb
(Post 1235958)
Time for an RX7 carrier housing!
Is the rx7's housing pnp? including the diff mounts.
Originally Posted by timk
(Post 1236010)
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? I'm sorry, english isn't my first language.. what are you meaning? |
Originally Posted by DNA54
(Post 1236405)
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. |
How the hell are you breaking housings like that?
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Originally Posted by ScottyP3821
(Post 1236439)
How the hell are you breaking housings like that?
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Originally Posted by DNA54
(Post 1236405)
I'm sorry, english isn't my first language.. what are you meaning?
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Originally Posted by timk
(Post 1236659)
You seem to have lots of interesting equipment, a hoist, a pit, lots of open space. Is that at your workplace?
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. |
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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 :yippee: 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! :vash: https://www.miataturbo.net/attachmen...ine=1433758579 |
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That seems like a lot of packaging for one little restrictor.
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yes, indeed.
I paid a lot for that restrictor, but they included a turbo for free :giggle: https://www.miataturbo.net/attachmen...ine=1434622867 https://www.miataturbo.net/attachmen...ine=1434622867 https://www.miataturbo.net/attachmen...ine=1434622867 https://www.miataturbo.net/attachmen...ine=1434622867 |
I noticed that this topic becomed a "build" one... Can it be moved in the media section?
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Before you fit it tweak your wastegate, you'll have lot less boostcreep
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are you meaning porting it?
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Originally Posted by DNA54
(Post 1241536)
are you meaning porting it?
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Not the arm itself, but the bush.
The wastegate is free to rotate ;) Is it strange? It's an original garrett |
looks badly casted....possible failing point I presume
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Yesterday I clocked the turbo and checked the actuator: feels like a 7 psi unit.
I also began to weld a new manifold to head flange because mine is warped, and there's a little leak even whith a new oem gasket.. The only issue: oil line. I need to connect somehow an 8mm copper pipe to the restrictor. This is what I could find https://www.miataturbo.net/attachmen...ine=1434700791 Terrible, isn't it? And heavy as hell. |
diy "turbo no hit block" '00 BP miata
Brass is not as strong as steel and it is better to use less adapters when possible. Each is a possible point of failure.
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Originally Posted by DNA54
(Post 1241846)
The only issue: oil line.
I need to connect somehow an 8mm copper pipe to the restrictor. |
Originally Posted by Joe Perez
(Post 1241881)
You are planning to use copper pipe to supply oil to the turbo?
Sixshooter: I know that... the restrictor itself is brass. I'm finding a different solution, but it's difficult to find npt stuff in Italy |
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Originally Posted by tjeerd
(Post 1241537)
Yep, sorry...not a native speaker....
https://www.miataturbo.net/attachmen...ine=1434721586 The wastegate port cast is not bad at all, I think to leave it as-is for the moment. If a creep problem appears, I will port it. |
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Today I began to work
I found why everyday the boost was a little bit less: the wastegate couldn't close completely. The flapper was slightly bent: https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 properly made shaft: https://www.miataturbo.net/attachmen...ine=1434844507 turbine housing differences: https://www.miataturbo.net/attachmen...ine=1434844507 |
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Today I clocked the turbo, made an inlet flange and other misc
: https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 |
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More progress:
https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 Now, first impressions: it feels slower over 5500-6000 rpm at the same pressure of the chrubo potato, but well.. it's very very funny to drive! first two gears are just a spin button, the third gear spin the tire a little bit, but enough to false the virtualdyno log (around 270hp at 210kPa) Now, time to tune this... thing. I'm in doubt about the advance table: I've modified (internet inspirated) my table this way https://www.miataturbo.net/attachmen...ine=1435431122 What does it seems?? |
Holy header wrap, Batman! :) What kind of wrap, and what are those metal ties you used to clamp the ends tight?
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Originally Posted by huesmann
(Post 1244686)
Holy header wrap, Batman! :) What kind of wrap, and what are those metal ties you used to clamp the ends tight?
The ties... they comes with the wrap News: I tried the new advance table for like one gear, and it knocked... back to the previous one for now. I also destroyed the compressor wheel, now the turbo is at the rebuild shop |
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oh man.......
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A piece of rubber has fallen into the turbine inlet... while wot
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Did you drive without filter?
EDIT: oh i guess thats a yes according to the last post. |
Originally Posted by Vincentmiata
(Post 1244752)
Did you drive without filter?
EDIT: oh i guess thats a yes according to the last post. I had a rubber ring to fit a 3" silicone hose into the 2.5" compressor inlet flange... it was one of the universal filter adapters :loser: |
Did it eat that black plastic piece in the picture?
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Originally Posted by sixshooter
(Post 1244786)
Did it eat that black plastic piece in the picture?
well, that piece was like 1/5 of the rubber it eated all the rest was stopped by the intercooler https://www.miataturbo.net/attachmen...ine=1435613271 https://www.miataturbo.net/attachmen...ine=1435613271 |
I'd flush the engine if I were you, fresh oil/oilfilter. Wouldn't want any shrapnell in the engine
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Originally Posted by tjeerd
(Post 1244921)
I'd flush the engine if I were you, fresh oil/oilfilter. Wouldn't want any shrapnell in the engine
last log I did, this was a six gear pull, open loop ebc, target: 200 kPa (14.5 psi) maximum boost is at 3295 rpm https://www.miataturbo.net/attachmen...ine=1435662195 |
Originally Posted by DNA54
(Post 1244929)
how do you think it could compromise the engine oil?
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Looks like you have a huge knock event at the end of the log.
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Originally Posted by Reverant
(Post 1245054)
Looks like you have a huge knock event at the end of the log.
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The turbo is in, and it pulls strong.
Even the 3.636 spins the first three gears (time for a good set of tires) This evening I made some manifold shield and an airbox whith alluminium sheet https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 https://www.miataturbo.net/attachmen...ine=1437261729 |
<p>Looks good man, nice work.</p>
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diy "turbo no hit block" '00 BP miata
That's pretty.
Are you surprising any other sports car owners over there yet? |
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Originally Posted by turbofan
(Post 1250051)
<p>Looks good man, nice work.</p>
Originally Posted by sixshooter
(Post 1250089)
That's pretty.
Are you surprising any other sports car owners over there yet? I'm slowly tuning the advance table whith det cans, the oem knock sensor picks up too many noises, it's nearly impossible to tune whith it! this is my current table: https://www.miataturbo.net/attachmen...ine=1437422864 |
yesterday night I heared something fall out of something in the differential region, and it started an awful noise :cry:
it's like a whistle that follows the speed, and it's present only when I apply torque (a little bit, a lot... didn't change) About a couple mounths ago the same whistle started from the primary shaft of the gearbox, this noise follows rpm's... What the hell it's happening? From yesterday to today the diff noise is even worst :noes: |
oh my........5 speed couldn't handle the torque?
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6 speed...
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....how much bad luck can somebody have?
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Originally Posted by tjeerd
(Post 1251912)
....how much bad luck can somebody have?
Seems like it's a bad bearing. The worst thing is that noone can change it. Another bad thing: this turbo is too little. Wastegate shut: 250+ kpa at 4000 rpm and down to 220 at redline. No huge power gain compared to 200 kpa |
Welcome to the club. Been there done that, had to rebuild everything twice. And now still smoking oil when lift off.
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