M3NTALS B6T Build Thread pics always

[FestYboy]

Untouched, a stock carb b3 will pull past 7200, but it's choking out due to lack of air. With mods, and better valve train, 8k is possible. Obviously the engine wasn't designed for anywhere near that, so reliability lakes a dump.

[jason_]

With a forced or better n/a intake/head, what can a b3 and b6 wind out to if it's cleanly balanced?

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[FestYboy]

Blue is listed as torque, red as power, I don't see an explanation for the green. At least that's how I read it.

[Advancedynamix]

A 2560 isn't small for a 1.6 though. It's an upgrade for the sr20det, which is a 2.0. The same turbo on a greddy 1.6 Miata kit pulls past 6 no problem, and the b6t manifold is a better shape than that greddy manifold. Also, TQ and HP always cross at 5252 RPM or the calibration/correction is inaccurate. Also, as Arty mentioned, a TQ curve with that steep of a rise would net a much steeper HP curve. The HP curve on that graph looks like it should have a pretty flat TQ curve. It's really hard to tell with the picture at an angle and not being able to read what the lines represent, but my first guess was all HP curves with the red one being AF and that perfectly linear line being some function that wasn't used.

[Flyin4stroke]

M3NTALS B6T Build Thread pics always

I don't get it. It makes sense to me. Engine tq and hp. Small turbo runs out too soon. Afrs are on the graph too. That's the line that is dropping.

[Advancedynamix]

I agree. Where's the TQ curve? HP doesn't tell the story without the TQ, boost, and AF.

[2festi]

Looks like they are all hp graphs with no torque. If you look down in the left corner it has run1 run2 and run3 in 3 different colors that match the 3 different curves.

this

[shorestiva]

Looks like they are all hp graphs with no torque. If you look down in the left corner it has run1 run2 and run3 in 3 different colors that match the 3 different curves.

[Advancedynamix]

I was thinking the same thing. I figured maybe a correction had thrown things off.
I've seen TQ curves ramped like that with boost control, but TQ shouldn't be higher than HP over 5300rpm. If the HP was overcorrected, maybe this could happen? I'm stumped.

[FestYboy]

There's something funny about that graph... In particular, the crossover point: it's not at 5252 like it should be (must be). And given the near 45* torque plot, the hp line should look more exponential, seeing that hp is merely an equation of force and time.

[festyfreak39]

the ol t25.

[Advancedynamix]

It's hard to tell what is what from that picture, but I'm assuming the boost control is set up to ramp the TQ with rpm. That's a great TQ curve, but it would be nice to pull past 6500rpm, especially if the g series has a tall 5th. I'd highly recommend an ATI damper and stock weight flywheel for over 6k rpm though. Also, make sure the block vent is being used.

[Flyin4stroke]

Carlos controls the tq with the tune. He prides himeself on keeping it nice and flat.

[Advancedynamix]

Wow, that's pretty nice. I want one! Why is it dropping off so hard before 6k? Time for better cams. That intake manifold and turbo should be good for over 6k rpm.

[Flyin4stroke]

Dark blue is TQ