PBGuts

Some people just have all the luck. The holidays may put a bit of a damper on the progress but I am so excited to see what I can get out of this 2560

sshamrockk

Inb4 hate for saying this, but it is a dyno jet, which we all know reads a bit high, but even on a Mustang dyno that's about 280 which is still impressive.

Braineack

iTrader: (62)

we repeated it on Ed's 97. same absurdflow manifold, begi IM, and TB. stock motor. 93 pump. he was running like 14-15psi and made 270rwhp on the dynojet. nearly identical plot -- ill have to look for it.

Dynojets are consistent. and we had run like 20-30 different miatas on the same dyno -- so it wasn't a fluke/fake number.

I think Tim's manifold was just a great pairing to that turbo -- the BEGI IM helped a butt ton too.

HeavyD

Sub'd, great start, a GT2560 to start and upgraded rods are in my foreseeable future.

PBGuts

when I upgrade the turbo and turbo Mani I'm also going to have Josh Briggs fan me up an intake mani....unless I can find a flat top for a decent price before then.

PBGuts

Not my engine but this is the rig he fabs up with a mustang TB. Seems solid!

shuiend

iTrader: (24)

Just be aware that a custom intake manifold will most likely be 2x the cost of the flat top, and no guarantee it will actually be better.

Braineack

iTrader: (62)

just make sure it has like ~9" runners.

Midtenn

iTrader: (15)

I was about to say, nice fab work, but no engineering. Runners are way to short for a BP.

Savington

iTrader: (31)

Speak for yourself, please. Dynojets are inherently accurate when compared to pretty much every other dyno. They measure power based on known constants and physics, and calculate torque using an RPM pickup. Virtually every other style of dyno uses a calibrated load cell to measure torque and calculates horsepower based on wheel speed and gear ratio and/or RPM pickup, and there is inherent error in that calibrated load cell. Compare two Mustangs or two Dynapacks across the country and they can read wildly differently. Compare two Dynojets on an SAE correction and they are going to be the same within 2% every time (if the weather station is set up right).

Braineack

iTrader: (62)

lol. you got a neg cat for speaking the truth.

18psi

iTrader: (76)

I always prefer dynojets when power bragging for all the reasons Spendington listed.

sshamrockk

I don't expect anything less now-a-days.

ridethecliche

iTrader: (2)

/pedant hat
Accuracy and precision (ie reliability) aren't the same thing.
/end pendant hat

Savington

iTrader: (31)

Won't be the last time

Savington

iTrader: (31)

Fair enough. Dynojets are accurate. There are other dynos which are more precise. They each have their place, and I use one or the other depending on what my goals are. What annoys me is when people who don't understand physics say that Dynojets "read high". No, they don't. They read accurately. They measure power directly by seeing how long it takes to accelerate a drum of a known mass and size from one speed to another, higher, speed. Accelerating the drum is doing work, the time it takes to do that work is power. Do a little unit conversion and you have horsepower.

PBGuts

Just purchased these. I imagine they will take forever to arrive but that should give me some time to practice my fabricating skills on making some seat rails.

Braineack

iTrader: (62)

those will look good!

ridethecliche

iTrader: (2)

Yup. Wasn't criticizing your take on the matter. I just think folks use the terms interchangeably which is whatever in colloquial vernacular but a bit odd when talking about anything remotely technical.

shuiend

iTrader: (24)

Which momo seat is that and did you buy 2? If not I might have an older momo-start for sale soon for super cheap. I am hoping to upgrade from my momo seats to something a little better.