elior77

Hey,

I'm starting my ver2.0 turbo build, my current is a stock 1.8 NA 97 with TD04H-13C turbo (very small), I push it upto 15psi where it is out of efficiency but run very strong when the IAT is still normal around, 250whp.

Now I want a built engine and a setup that can put out around 350whp, I ordered some stuff and I was planning on a gt2560r, but I understand now that it will make past 300whp only in special cases of stroker engine and so...

Well, I got rods pistons and all the rest on the way, what turbo do I want... any chance no ending up with a 6000-7500rpm power band ?

On the way for now:
ebay rods+arp2000
arp head + main
complete engine kit, timing, water pump, oil pump, oversized 83.5mm stock pistons, all the engine gaskets- if the pistons will not fit I don't care - it is a great kit for it's price
injectors - currently RX7 460cc @ 92%, I need 800-1000cc I guess.

I got a custom tubular manifold.
FM stage 1 clutch NIB
EBC
DIYPNP - I tune it
6spd
NB LSD

I need the right turbo to get me to 350whp~

2560 @ 20psi will not put more then 300?

Thanks
Elior

ridethecliche

iTrader: (2)

Fuel pump?

Sidewaystocurb

iTrader: (1)

Which eBay rods?
2871 would be a good option.
Are you going to do pump or e85?

elior77

Fuel pump is a must over 300, so I'll get one.
Rods:
Connecting Rod Rods for Mazda MX5 MX-5 Miata B6 BP 1.6 1.8 Conrods ARP Bolts msr | eBay

Got them for 255$+the ARP2000.

2871 ? ok I'll check its map.
I see that the 6258 looks perfect - it is ?

elior77

The fuel system needs upgrade ? beside pump and injectors.

Thanks

shuiend

iTrader: (24)

EFR 6258 is probably what I would be looking at. A 2560 might get you over 300whp on a perfect day out, but not much more then that.

Sidewaystocurb

iTrader: (1)

Are those rods proven?

that turbo does seem perfect but I didn't mention it because of the price. Lol

to run e85 yes you'll need bigger than 460cc and a fuel pump.

elior77

6258 or 6758 ?

• EFR6258: 150-325whp, ideal for pump gas and stock engines
• EFR6758: 250whp-450whp, ideal for built engines or flex-fuel (E85)

.64 or .85 ar ?

Sidewaystocurb

iTrader: (1)

you want the 6258.

elior77

I going for 350whp so I understand the 6258 is not there.

Sidewaystocurb

iTrader: (1)

Are you running e85 or pump? The bigger will give you headroom but, I still think the 6258 is a good fit specially if you're running e85

elior77

for now it is pump

shuiend

iTrader: (24)

If you truly want 350whp reliability, you need forged pistons. You are already going to have to overbore for the larger stock pistons, might as well go a little bigger with the forged and not worry about them in the future.

elior77

Why not just change the rods and keep the pistons ?

psyber_0ptix

iTrader: (4)

why go through all that work and leave it to chance?

elior77

How risky is that ? I know other engine run 400-500hp on stock pistons...

aidandj

iTrader: (5)

Other engines flow better
Other engines have more displacement
Other engines have a lower compression ratio
Other engines have forged pistons from the factory
Other engines...etc.

18psi

iTrader: (76)

Why aim so low?
Go for 650whp on stock block

elior77

Pistons are about heat not power.

aidandj

iTrader: (5)

WTF does that have to do with other engines?

Power is heat.