ZABMANN
10+ Year Contributor
- 70
- 0
- Sep 3, 2008
-
Collinsville,
Illinois
Are there any advantages to de-stroking my 2.4 to 2.1?
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this was all on an evo8. And yes, the turbo tuffs...i dont recommend anything less with the capabilities of this motor...would be senseless.
EDIT: he was using the magnus cast intake manifold.
Joe
SBR
Ah, Evo VIII...
What makes the Manley Turbo Tuff's so special?
Is it because they are off the shelf 156mm rods that can handle 1000+hp?
Aluminum Rods can do that and then some as well as rev higher because they weigh what, 200 grams less?
I think my money will be on 156mm BME Aluminum Rods and 2.3L CP Stroker Pistons spun by an Evo crank in my freshly cryo-treated revised thrust washer 7-bolt.
Throw a SBR Stage III 2g head on it with Kelford 272's and a JMF Race SMIM and call it a day.
SBR_JOE: i'm curious as to how much the build cost
-any video?

~$770 156mm Manley Turbo Tuffs Slowboy Racing, Inc. :: Mitsubishi :: DSM :: Engine :: Connecting Rods :: Manley Performance :: Manley 156mm Length I-Beam
~$450 for Manley 2.3L Stroker Pistons, but you can use any 2.3L Stroker Pistons
Slowboy Racing, Inc. :: Mitsubishi :: DSM :: Engine :: Pistons :: Manley Pistons :: 2.3L Stroker Pistons :: Manley 93-99 7 Bolt 4G63 8.5:1 Stroker Pistons (.020 Over Bore Only)

the turbo tuffs are the I beams. and its only because i dont think an H beam rod will handle the HIGH rpms this motor can withstand.
EDIT!!!
His boost gauge was reading off. This dyno run was actually at 23 PSI!!!!! Not 26!!!
NOW who wants to jump on the long rod bandwagon....Ron Jeremy is driving!!! HAHAHAHHA
Joe
SBR
Since were talking motor combo's, here's a nice little break down:
http://www.magnusmotorsports.com/tech/DetailedEngineList.pdf
Me likey 2.2L
You can have mine...for a few bucks
I recognize that motor.
Can you still get your auto tensioner on with the ATI Dampner in the way?
You think you're gonna be ok with those 11:1 pistons?
I assume she'll be on a liquid diet of strictly corn juice?
My build will have to be on 91 and 70/30 meth/water injection

So you're saying that power and torque was made on only 23psi.
Actually that seems closer to what I would expect from a HTA3582R.
Nice... again, what fuel was he using?
A better word picture for why low rod ratios produce more torque occurred to me last night. The velocity profiles are different, see figure 24 of http://www.kidzuku.com/StrokeOrNot.pdf .
The lower rod ratios have higher velocities at the top of the stroke where the cylinder pressure is higher. The higher velocity means that the pistons moves more inches per degree of crankshaft rotation giving a higher mechanical advantage at the top of the stroke. This should mean that the low rod ratio is best at making torque while the cylinder pressure is high.
The higher rod ratios have a higher piston velocity at the bottom of the stroke. This should mean that the higher mechanical advantage while cylinder pressure is lower will be more efficient at getting the last bit of energy from the charge.
This word picture is based on the same math as my post 31 but seems to explain the effect better.
That's all fine and dandy, but 2.3L's are like a teenaged boy in bed with a girl for the first time.
They're all pent up, quick to get in there, no fore play, just mad power for the few seconds it takes to spool up, full torque by 4k rpm, breaks the transmission and then and drops like a rock and falls fast asleep losing over 200 ft*lbs of torque by 7krpm...
To me, that's a big...
Manley's I-Beam Rod Weights are as follows:I saw the turbo tuff rods also. Joe, do you have a gram weight on those rods? I'm also wonder what aluminum rods you can get your hands on? I have a 6 bolt already machined (block / crank). No rods or pistons yet though. Everything is standard size (jdm motor, just tore it down to build on the side). I tried calling your number this morning but it rang like 3 times then made a weird beep noise? (fax machine maybe?). I'll try again when I get home from work. What are your hours? (I'm on EST also).
That post was referenced back to my post 31 which addressed Matts question about why the long rod 2.0L made more torque than the 2.1L. As my post 31 spells out the 2.0L has a lower rod ratio than the 2.1L. That post was not about the 2.3L.
The long rod 2.0 dyno chart shows more torque than the 2.1L. Some people want a visual word picture to explain such things.
But now that you mention it; wam bam thank you mam is a pretty good way to get through the intersection after getting the green light. Instant gratification is still gratifying.
Goals are never wrong.