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How Much HP Can I Get?

Posted: Sun Jun 15, 2014 6:28 pm
by 240Silvia
Ok so here is my build:

*Eagle H Beam Rods
*Wiseco 9:1 Forged Pistons
*Brian Crower Dual Valve Springs With Titanium Retainer Clips
*Clevite 77 Rod Bearings
*ACL Main bearings
*Walbro 255lph fuel pump
*Adjustable fuel pressure reg
*Bosch 850cc top feed injectors
*AEM EMS series 2
*Holset HX35 twin scroll T4 turbo
*Stainless steel top mount manifold
*AEM fuel rail
*Aluminum lightweight flywheel
*Brian Crower Stage 3 race cams
*3" Exhaust with Magnaflow can
*Stage 5 6 puck ceramic and kevlar clutch
*ARP Head studs
*Tial 50MM BOV
*Tial 44MM Wastegate
*Apexi AVCR boost controller
*Coil Packs
*12X36X3 FMIC 3" piping

everything in the motor is brand new. Im looking to get 500~ HP Could i make more?

Re: How Much HP Can I Get?

Posted: Sun Jun 15, 2014 6:57 pm
by shift_down
You will need a bigger pump and injectors

Re: How Much HP Can I Get?

Posted: Sun Jun 15, 2014 7:58 pm
by 240Silvia
what would you recommend for injector size? and lph rating?

Re: How Much HP Can I Get?

Posted: Sun Jun 15, 2014 8:47 pm
by shift_down
It depend on the type of fuel you will be running. If you have e85 available, get a set of 1600cc or 2000cc injectors with something like a 320 lph fuel pump.

If you do 93 or 91 octane, maybe 1000cc will suffice with a 320 lph also. And I don't know how big your rail is, but a beer can -8 would be awesome.

Re: How Much HP Can I Get?

Posted: Wed Jun 18, 2014 5:58 pm
by street_240sx
You could get a solid 6......and I don't mean 600 lol jkjk it's honestly hard to determine power just from someone's build. It depends on the tune and conditions but could do 400/500 range

Re: How Much HP Can I Get?

Posted: Thu Jun 19, 2014 12:43 pm
by airman
Those 850cc injectors will run out on you on regular 93 around 400whp. The HX35 and your Walbro 255 will run out close before 500hp. Your stage 3 cams are helping your top end there, though.

Injectors are getting cheaper now though! Found a used set of siemens 2250cc for just about $500, good for E85 too.

Re: How Much HP Can I Get?

Posted: Thu Jun 19, 2014 7:57 pm
by street_240sx
I think the home could do more than 500, especially t4. Fuel pump could go with an or mk4 supra or the aem one. I would think 850 could do more than 400hp. On evo 550cc are good to mid 300

Re: How Much HP Can I Get?

Posted: Fri Jun 20, 2014 4:54 am
by airman
Ah didn't realize T4 Twin scroll. Maybe a little more, then. At 20psi on my T3 HX35 I was sitting around 400whp and injector duty cycle on 93 somewhere in the 80% range. This was on Precision 85lb injectors. I wouldn't feel comfortable going much higher on the duty cycle where I keep my tune - a boost spike could starve fuel since injectors can't keep up.

Re: How Much HP Can I Get?

Posted: Fri Jun 20, 2014 7:58 pm
by street_240sx
Yea 80-85% is where I'd like to keep my duty too but some push it higher

Re: How Much HP Can I Get?

Posted: Fri Jun 20, 2014 8:24 pm
by 240Silvia
so i should use 1200cc injectors, what would be the max power this son of a bi*ch can put out.

Re: How Much HP Can I Get?

Posted: Sat Jun 21, 2014 9:08 am
by airman
I'm going to say the Walbro 255 will take you to around 500 assuming you're running E85 and know exactly what you're doing on the tune.