250 WHP Supernatural 3.4 Build (Page 2/47)
lou_dias OCT 09, 12:21 PM
Just switching to a Dynojet and he is over 250rwhp. He was also using heavier than stock wheels. Honestly, looking at the heads, his are smoother but mine are ported a little more. That said - smoothening goes a long way in maintaining air-velocities.
Go La Fiera go!

[This message has been edited by lou_dias (edited 10-09-2017).]

lou_dias OCT 09, 12:31 PM

quote
Originally posted by La fiera:

Stock VS Supernatural Intake Manifolds

[SIZE=3]


I like how each of the openings on that twin-butterfly TB is larger than the original Fiero TB.
twin-58mm vs 52mm stock and 56/57mm ported. I'm using the Firebird twin 48mm TB myself. But hey, we have different builds/goals with similar mindsets.
La fiera OCT 09, 02:08 PM

quote
Originally posted by lou_dias:

Just switching to a Dynojet and he is over 250rwhp. He was also using heavier than stock wheels. Honestly, looking at the heads, his are smoother but mine are ported a little more. That said - smoothening goes a long way in maintaining air-velocities.
Go La Fiera go!




Thanks Lou!! And thanks to the rest of the crew; fieroguru and blackthree! Thanks for cheering me on

[This message has been edited by La fiera (edited 10-09-2017).]

pmbrunelle OCT 09, 02:40 PM
What kind of injectors are you using? They look well targeted, shooting down low.

Do they spray in a thin pencil, with perhaps less atomization/hp, or do they spray a wide fan mist, but with the possible consequence of a larger fuel puddle, and worse response?

Are you using Enhanced Acceleration Enrichment (for non-MS folks, this means transient compensation that is based on a wall-wetting model)?

It looks like the entry of the intake runners are tapered, so even though you probably don't have trumpets hidden in the plenum, it effectively does the same thing as trumpets. I like it.

[This message has been edited by pmbrunelle (edited 10-09-2017).]

La fiera OCT 09, 03:08 PM

quote
Originally posted by pmbrunelle:

What kind of injectors are you using? They look well targeted, shooting down low.

Do they spray in a thin pencil, with perhaps less atomization/hp, or do they spray a wide fan mist, but with the possible consequence of a larger fuel puddle, and worse response?

Are you using Enhanced Acceleration Enrichment (for non-MS folks, this means transient compensation that is based on a wall-wetting model)?

It looks like the entry of the intake runners are tapered, so even though you probably don't have trumpets hidden in the plenum, it effectively does the same thing as trumpets. I like it.




The injectors pattern are like a cone more than a fan and their location does both things, atomize better and at the same time they give me
the Wall-Wetting effect. But then I learn I can program the Wall-Wetting in the MS!!
You are also right about the runner shape, they act like a set of trumpets but tuned to take advantage of the induction pressure waves at mid to top end,
So technically is a Tuned Port Tunnel Ram!
I also made the runners SQUARE instead of ROUND to get as much volume and flow as possible.
And Lou Dias hit it on the nail; the head ports are matched to the intake to keep the flow velocity at high RPM\, If I would've made them bigger
the flow would slow and killed the performance.

And I'm glad you like it!

[This message has been edited by La fiera (edited 10-09-2017).]

Dennis LaGrua OCT 09, 05:12 PM

quote
Originally posted by La fiera:


Hello Dennis, the goal of my engine is NO TURBO, NO JUICE, 250WHP NATURALLY ASPIRATED @ 6000RPM. 3.4 PR IRON HEAD ENGINE.
I completely understand your concern in me not reaching that goal, but I'm absolutely sure I can.
So, just be patient and wait and don't ruin the expectation for the rest. Just relax Dennis!




I am relaxed and certainly wishing you all the best on reaching your goal. Just believe that it will be an expensive build with a difficult platform on which to reach that goal. Not saying that it can't be done .

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

La fiera OCT 09, 08:56 PM

quote
Originally posted by Dennis LaGrua:


I am relaxed and certainly wishing you all the best on reaching your goal. Just believe that it will be an expensive build with a difficult platform on which to reach that goal. Not saying that it can't be done .




Well thank you Dennis! For me this is a labor of love and I have more time than money invested in the motor. I've spend $2870 on the motor.
That includes all the parts and the machining, No R&D and no labor time.
I don't think we can put a price on the satisfaction we get when we achieve a goal!

[This message has been edited by La fiera (edited 10-09-2017).]

La fiera OCT 10, 11:22 PM


Block painted after being received from machine shop and ready for assembly!


Before installing the crank I did some mods to improve oiling at the rods and mains.
I know I could've made that mod better but I did that like a fast job.
I'm working on another crank and it will be much lighter and have much work,
it will be for this block but with a much higher HP goal, same thing; NA.



Crank dropped and ready for torque!

There's more to come, stay tuned!

[This message has been edited by La fiera (edited 10-10-2017).]

Francis T OCT 11, 04:04 PM
Here's my attempt at 220+ HP @ 6 - 7+K rpm with a norm asp 2.8 engine. It's in the car waiting for me to complete the paint / body mods, get some dyno data and burn a chip.
Hopefully we'll both meet our goals!






CUSTOM VENOLA FORGED PISTONS AND WORKED RODS

[This message has been edited by Francis T (edited 10-12-2017).]

La fiera OCT 11, 06:10 PM
Looking nice Francis!! Can't wait to hear it wail!! Keep up the good work!