SKMetalworks

iTrader: (7)

Im in the process of making my track car.
The turbo is 2860RS .86 hotside internally WG with EBC
The motor is a stock 1.6L with mild polishing in the exhaust ports.
Intercooler will be CX racing with 2.5" piping.
Exhaust is full 3" with a muffler and tip
Manifold is Absurdflow design.
ECU is MSpnp
Not sure if this matters but 4.10 torsen rear end


Im hoping to start spooling at 3250 and be @ 10 psi around 4250.


I checked the spool data but i didnt know what housing size they had. Anyway just wondering what i could get away with.

hustler

iTrader: (6)

Considering you ganked Tim's design I will regretfully confess that yes, this turbo will probably spin-up by 4k on that shitty motor of yours. My tater with the .86AR on the ~1.9 with 3" exhaust hits 11.5psi at 3100rpm now. I also have a proper wastegate though, which you don't, peasant.

SKMetalworks

iTrader: (7)

Its a good design what can I say. I give tim credit because he deserves it.

wayne_curr

iTrader: (8)

I'm pretty sure you're going to see 10psi much sooner than 4200rpm.

And you spelled potato wrong.

Oh and do EWG with a ms2 instead of the pnp so you can use EBC and I bet you spool by 3500.

Zel

The Dan Quayle patato"e" spelling. I remember!

hustler

iTrader: (6)

I think 3500rpm on a 1.6 is a stretch. I also seriously doubt an EBC is going to improve spoolage with a proper TiAL wastegate. According to my engineer friend at TiAL the two springs with different free-lengths, different rates, and one preloaded spring is magical.

wayne_curr

iTrader: (8)

Well i'm no expert on turbo sizing and spool so you're prolly right. I swear i remember seeing spool data on some 1.6 T3 setups that was surprisingly quick.

TURNS101

iTrader: (10)

That t3 may have had small Comp housing, exh wheel and housing.

y8s

iTrader: (8)

Here's Jeremy from FM's potato on a 1.6:
http://flyinmiata.com/tech/dyno_runs/Jeremy_potato.pdf

he didn't like it. maybe some intake cam advance would help with low end.

GeneSplicer

iTrader: (14)

I'll post some data in a week when my T3 install is complete. It's a small .42AR with a 50 trim.

albumleaf

iTrader: (7)

Do that please, I'm interested as well. Chinacharger?

HKSturboMiata

iTrader: (1)

Potato on stock engine



Potato on built engine and begi intake manifold

Braineack

iTrader: (62)

I have a larger turbine than a disco, older less-efficient compressor wheel design of the same exact size, journal bearings, and a .48 A/R housing (.64 T2X Equivalent) and I can see 16-18psi around 3500rpm in 4th gear...


This compares my ebay T3 50 trim (blue) to my T3 Super 60 (red)

Savington

iTrader: (31)

I've driven a .86 DP on a 1.6 and I didn't like it either.

SKMetalworks

iTrader: (7)

Well once i blow up my motor ill build a 1.9L Thanks for the info guys.

shlammed

iTrader: (8)

...i read this after i just bought splitimes disco setup hahaha....

Splitime

iTrader: (24)

Ignore the naysayers. The miata folk have lived behind other automotive worlds for a long time for a reason

SKMetalworks

iTrader: (7)

Im hoping for full spool (10psi) by 4250. If its 4500 or 5k it will be pretty much completely useless for the track (atleast on a 1.6L). With the manifold design (Thank you Turbotim) and uber 3" non restrictive exhaust and some port matching/polishing on the exhaust side im hoping to achieve this.

Savington

iTrader: (31)

You'll have no trouble making 10psi at 4200. IIRC, the car I drove was making ~15psi at around 4700rpm, which is pretty late IMO. My 1.9L 2871R .86 is more responsive and spools quite a bit better than the 1.6L 2860RS .86 I drove. I've also driven a 1.9L 2860RS .86 and it was significantly better as well.

wayne_curr

iTrader: (8)

Completely useless is pretty extreme. At bremerton I dont ever get below 4500 which is a track that turbo will like a lot.

Did I read that you're going to the Alfa club school?