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Old 01-26-2013, 03:34 PM   #4526
thatsilverwrx
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E85 and basically your power. I'm always torn between your turbo, the 1.5XTR, or just say F it and go rotated lol. I think I'd be best off with your set up though.
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Old 01-26-2013, 03:57 PM   #4527
airbornesoldier
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Quote:
Originally Posted by xluben View Post
Winter Mode:

Chronological:
2011 WRX Purchased: 10/21/10
MODE Shifter: 11/03/10
SPT Exhaust: 11/07/10
Winter Wheels: 11/12/10
Stage 1 Tune: 11/18/10
COBB Downpipe: 12/19/10
Stage 2 Tune: 12/19/10
IPR TMIC: 1/14/11
Forge BPV: 1/14/11
Defi Boost Gauge: 1/15/11
SMY Dual Gauge Cluster: 1/19/11
Walbro Fuel Pump: 1/27/11
Kartboy Front Shifter Bushings: 1/29/11
DIY Seat Bolster Mod: 02/07/11
Kartboy Rear Shifter Bushing: 02/16/11
GrimmSpeed Master Cylinder Brace: 02/17/11
Red Tail Light Overlays: 02/19/11
Flapatax Mud Flaps: 02/26/11
AEM Cold Air Intake: 02/28/11
GrimmSpeed EBCS and MBC (Hybrid Boost Control): 02/28/11
Fiveo Motorsports 1200cc Injectors: 03/05/11
Custom E85 Tune: 03/05/11
Whiteline 24mm Adj. Front Sway Bar: 04/21/11
Whiteline 22mm Adj. Rear Swaybar: 04/21/11
RalliTEK HD Front Endlinks: 04/21/11
RalliTEK HD Rear Endlinks: 04/21/11
BC Racing Inverted Coilovers: 04/21/11
AEM UEGO Digital Wideband O2 Gauge: 05/23/11
Whiteline 22mm Adj. Front Sway Bar: 05/27/11
GrimmSpeed License Plate Relocation Kit: 06/02/11
Fast Motorsports (FMS) Front Mount Intercooler (FMIC): 06/07/11
OEM Scoopless Hood: 06/13/11
Yakima Roof Rack: 06/27/11
Invidia Q300 Exhaust: 07/22/11
Invidia Catless Downpipe: 07/22/11
Blouch 20G-XT-R Turbo: 9/17/11
GrimmSpeed License Plate Delete: 9/22/11
GrimmSpeed Turbo Heat Shield: 9/23/11
Gold 04 STi BBS Wheels: 09/28/11
KSTech 73mm Intake: 10/01/11
Tial MV-R 44mm EWG, GrimmSpeed Uppipe and Crosspipe: 10/13/11
Omni Power 4 Bar MAP Sensor: 02/06/12
Stock Exhaust: 02/18/12
Blown Motor - Cracked #2 Piston: 02/22/12
Built Shortblock: 03/05/12
TGV Deletes: 03/05/12
AMR 3" Hard Inlet: 03/05/12
Mach V Awesome 17x9" Wheels: 03/21/12
Dunlop Star Spec 255/40R17 Tires: 03/21/12
GFB 50/50 Hybrid BOV: 03/31/12
Turbo XS 50/50 Hybrid BOV: 04/05/12
ACT HD Pressure Plate: 04/06/12
ACT Street Light Flywheel 04/06/12
ACT Sprung 4 Puck Clutch Disc: 04/06/12
Dyno @ MAP: 462WHP / 492WTQ: 04/11/12
RCE Black Springs: 04/14/12
TurboSmart Kompact BPV: 04/18/12
StopTech SS Brake Lines: 04/18/12
StopTech Street Performance Brake Pads: 04/18/12
ATE SuperBlue Brake Fluid: 04/18/12
Koni Adjustable Dampers (Rear): 04/26/12
Koni Adjustable Dampers (Front): 04/27/12
besthaticouldo Shift Knob: 05/08/12
All-In-One Flip Key Mod: 05/16/12
In-Cabin MBC Relocation: 05/22/12
SPT Exhaust: 05/26/12
Blown 5 Speed - Stripped 3 Gear: 06/02/12
V-Limited Front Lip: 06/13/12
DIY Bumper Vent: 06/13/12
PAR Built 5 Speed: 07/06/12
Stock Exhaust: 07/15/12
Forge BPV: 07/16/12
TurboSmart Dual Port BPV: 07/19/22
Removed Clutch Delay Valve: 07/22/12
Greddy Ti-C Catback: 08/10/12
PTP Turbo Blanket: 08/12/12
Hand Wash and Wax: 09/08/12
Invidia Equal Length Header: 09/25/12
PAR Straight Cut 2nd Gear: 10/14/2012
Kartboy Pitch Stop Mount: 10/14/2012
Cusco Motor and Tranny Mounts: 10/14/2012
Mach V Awesome Decals: 10/18/2012
2 Year Anniversary!: 10/24/2012
Stock Wheels and Winter Tires: 10/28/2012
Stock Exhaust: 10/28/2012
ARK GRiP Exhaust: 11/02/2012
PTP Lava Turbo Blanket: 11/10/2012
GReddy SP Elite Exhaust: 11/14/2012
Exhaust Comparison Photos: 11/18/2012
Kartboy Shifter Comparison: 11/20/2012
VG Shark Fin Antenna: 01/14/2013
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Old 01-26-2013, 04:00 PM   #4528
xluben
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Please remove that giant quote.
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Old 01-26-2013, 04:04 PM   #4529
shadowmd
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Quote:
Originally Posted by xluben View Post
I have it on order. Right now it's just running open and the car gets pretty loose in the rear any time I put down in 1st-3rd.
Yeah mine should be here in a week or so. Rwd is fun, to a point lol. Coming out of a parking lot and having the rear come out is pretty sweet but I miss Awd haha. Did you get the r180 rear too? I broke the r160 spider gear so had to get the r180 and the dss axles. I have a jdm ver. 9 Sti trans (3.90 fd)so finding another regeared r160 would of been difficult so r180 it was
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Old 01-26-2013, 05:46 PM   #4530
blehhh
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Quote:
Originally Posted by xluben View Post
I really didn't plan to mod the car when I bought it.
two months later...



Any plans for a one-piece driveshaft?

Your setup is probably already worlds different than mine (with the swap, the cusco mounts, the flywheel & clutch, etc), but even with all of my group N, kartboy, whiteline and TIC mounts and bushings, I still feel the bucking of the two-piece driveshaft unless it's an absolutely perfect rev match. I'm almost about to buy a one-piece before I even tune the car.

-Ben Van, from the youtube comments

Last edited by blehhh; 01-26-2013 at 06:09 PM.
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Old 01-26-2013, 07:36 PM   #4531
Lrn2Corner
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Originally Posted by J_Maher_WRX View Post
Only 80lbs heavier for a 6spd is awesome, definitely worth it IMO. Very interested as to what you have done here as ill prob be following the same path
I will be waiting for that eagerly, I don't have the power goals you have but for what I plan on doing this would give me everything I want in a drivetrain set up. I do plan on going with a one piece aluminum driveshaft though.
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Old 01-26-2013, 07:47 PM   #4532
J_Maher_WRX
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Originally Posted by Lrn2Corner View Post

I will be waiting for that eagerly, I don't have the power goals you have but for what I plan on doing this would give me everything I want in a drivetrain set up. I do plan on going with a one piece aluminum driveshaft though.
May as well do carbon fibre if you're going at it, might cost a little more, but more reliable for sure and definitely has greater benefits.
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Old 01-26-2013, 08:34 PM   #4533
Lrn2Corner
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Originally Posted by J_Maher_WRX View Post

May as well do carbon fibre if you're going at it, might cost a little more, but more reliable for sure and definitely has greater benefits.
Oops meant to quote xluben. From what i found the cf driveshaft is not much lighter for the price increase of $600.00.
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Old 01-26-2013, 09:08 PM   #4534
J_Maher_WRX
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Originally Posted by Lrn2Corner View Post

Oops meant to quote xluben. From what i found the cf driveshaft is not much lighter for the price increase of $600.00.
Yeah may not be worth it unless its a dedicated track car. I would still prefer the carbon fibre one though, just knowing that material is far superior to aluminum and you know you'll never have an issue with it
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Old 01-26-2013, 09:50 PM   #4535
Cruz5350
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I think there was some fitment issues concerning the aluminum shaft where as the CF had no rubbing at all. That's a big IIRC though.
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Old 01-26-2013, 09:56 PM   #4536
blehhh
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Quote:
Originally Posted by Lrn2Corner View Post
Oops meant to quote xluben. From what i found the cf driveshaft is not much lighter for the price increase of $600.00.
The static weight difference might be small, but the moment of inertia for each are very different, and that is the only thing that matters when it terms of the force required to accelerate the shaft.

Basically, you could have a lighter, but larger diameter shaft that takes more effort to spin than a heavier, but smaller diameter shaft.

Case in point... \/

Quote:
Originally Posted by Cruz5350 View Post
I think there was some fitment issues concerning the aluminum shaft where as the CF had no rubbing at all (because it's smaller). That's a big IIRC though.
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Old 01-26-2013, 10:02 PM   #4537
Cruz5350
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Ya I wanted to say it was smaller but didn't want to spread false info.
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Old 01-26-2013, 11:08 PM   #4538
khashhhh
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Quote:
Originally Posted by blehhh View Post
The static weight difference might be small, but the moment of inertia for each are very different, and that is the only thing that matters when it terms of the force required to accelerate the shaft.

Basically, you could have a lighter, but larger diameter shaft that takes more effort to spin than a heavier, but smaller diameter shaft.

Case in point... \/
Amazing car.

The first part makes sense to me, but the second doesn't. F=mv^2/r for centeripetal force, right? So if you decrease the mass, you also decrease the amount of force needed because m and F are proportional to each other. When you increase radius, we're again lowering the force needed because r and F are inversely proportional. Totally not trying prove anyone or anything wrong, It just happened that I was reviewing physics tonight Correct me if I'm wrong and if it's something else that I'm missing. Maybe the concenteration of mass on the carbon fiber shafts are different?
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Old 01-26-2013, 11:52 PM   #4539
blehhh
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Quote:
Originally Posted by khashhhh View Post
Amazing car.

The first part makes sense to me, but the second doesn't. F=mv^2/r for centeripetal force, right? So if you decrease the mass, you also decrease the amount of force needed because m and F are proportional to each other. When you increase radius, we're again lowering the force needed because r and F are inversely proportional. Totally not trying prove anyone or anything wrong, It just happened that I was reviewing physics tonight Correct me if I'm wrong and if it's something else that I'm missing. Maybe the concenteration of mass on the carbon fiber shafts are different?
Centripetal force is entirely different. You're referring to the inward force required to hold a tethered object from flying off on a tangent (literally). That's not really analogous here.

For a driveshaft, it's all about inertia, and it's the polar moment of inertia at the cross-section that's important, which relates an objects areas of mass to their distances from an axis of rotation.

If you have two equal weight driveshaft tubes, but with different diameters, the larger one will be more resistant to a change in rotational inertia because its mass is further from the axis of rotation.

The best analogy really is a figure skater. During a spin, they start with their arms out (high moment of inertia) to help build up a fixed amount of rotational inertia, but then they pull their arms in (lowering their moment of inertia) which then makes them spin faster. Their rotational inertia remains the same, but their moment of inertia has decreased, so their rotational velocity increases.

Or another analogy, imagine trying to twirl a short piece of pipe (double-sided light-saber style)... now imagine trying to twirl a 6 ft leaf rake. The leaf rake actually takes more effort to spin because you're building more rotational inertia than the short length of pipe.

Last edited by blehhh; 01-27-2013 at 12:11 AM.
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Old 01-27-2013, 12:19 AM   #4540
xluben
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What you're saying is basically true but there are some other things to consider. It's the distribution of the weight that really matters. If the CF shaft were large enough diameter, and hollow (all the weight at the perimeter) it could actually be harder to turn that a smaller, solid, heavier shaft. This would all depend on the actual weights and measurements though. In general the CF shaft would almost always end up being easier to turn.

I'm not sure the leaf rake example is applicable, because I think that one has a lot to do with wind resistance.
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Old 01-27-2013, 12:43 AM   #4541
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Old 01-27-2013, 01:12 AM   #4542
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I've been checking in your thread intermittently since the beginning. What a progression! Car pulls hard and still looks like a Subaru should- understated but potent.
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Old 01-27-2013, 03:53 AM   #4543
shadowmd
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Originally Posted by xluben View Post
Trying this video again to see if I can get it to embed:

Video Link: http://www.youtube.com/watch?v=WIakkW2ujfE
Definitely pulls nice! Wish I had e85
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Old 01-27-2013, 09:34 AM   #4544
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What are the spec b ratio's for the 6 speed? I have a close ratio 5 speed ppg set up and it looks pretty similar

at 7000 rpms, first 41mph, second 60mph, thrid 85mph, fourth 118mph

First 3.08
Second 2.15
Third 1.5
Forth 1.05
Fifth 74.

I must thank you for doing the six speed swap. I'm doing a hybrid build and have been debating on turbos forever. This puts things in perspective for me.
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Old 01-27-2013, 09:34 AM   #4545
INKMAN
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Do you plan on doing any track time now that the 6 speed is in? Should be a blast now!
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Old 01-27-2013, 09:51 AM   #4546
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Do you plan on doing any track time now that the 6 speed is in? Should be a blast now!
He better! Haha Ben I love your car man, and now that 6spd is in, if you don't take it to track or strip and drag it I'm officially calling you a wuss

That 6spd is indestructible, or as near as makes no difference. I wanna see if you can get in the low 11's, maybe even high 10's
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Old 01-27-2013, 11:17 AM   #4547
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Xluben your car is a monster. That video is sweet!
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Old 01-27-2013, 11:34 AM   #4548
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Quote:
Originally Posted by Evil STI View Post
I've been checking in your thread intermittently since the beginning. What a progression! Car pulls hard and still looks like a Subaru should- understated but potent.
Thanks!

Quote:
Originally Posted by shadowmd View Post
Definitely pulls nice! Wish I had e85
E85 is great. 50+ HP

Quote:
Originally Posted by Android287 View Post
What are the spec b ratio's for the 6 speed? I have a close ratio 5 speed ppg set up and it looks pretty similar

at 7000 rpms, first 41mph, second 60mph, thrid 85mph, fourth 118mph

First 3.08
Second 2.15
Third 1.5
Forth 1.05
Fifth 74.

I must thank you for doing the six speed swap. I'm doing a hybrid build and have been debating on turbos forever. This puts things in perspective for me.
1st - 3.636
2nd - 2.235
3rd - 1.521
4th - 1.137
5th - 0.891
6th - 0.707

See below for what I get with this calculator. I used my current tire size, which makes the results slightly lower than the OEM tire size. I have found this calculator to be pretty accurate. Maybe ~1-2mph on the low side at the most.

http://www.car-videos.net/tools/spee...B1=Recalculate

1st - 35.5
2nd - 57.7
3rd - 84.8
4th - 113.4
5th - 144.8
6th - 182.4

It sounds like your close ratio set is very similar to the 1-5th gear in the 07+ STI. You're missing the longer sixth though.

Quote:
Originally Posted by INKMAN View Post
Do you plan on doing any track time now that the 6 speed is in? Should be a blast now!
Haha, I'll try to get out.

Quote:
Originally Posted by J_Maher_WRX View Post
He better! Haha Ben I love your car man, and now that 6spd is in, if you don't take it to track or strip and drag it I'm officially calling you a wuss

That 6spd is indestructible, or as near as makes no difference. I wanna see if you can get in the low 11's, maybe even high 10's
Well, they can break, but not that often. And other things also can break...

I'm hoping for low 11's if I do make it to the strip. It's not really a priority though.

Quote:
Originally Posted by cenix View Post
Xluben your car is a monster. That video is sweet!
Thanks!
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Old 01-27-2013, 12:08 PM   #4549
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Well, they can break, but not that often. And other things also can break...

I'm hoping for low 11's if I do make it to the strip. It's not really a priority though.

Thanks!
Yeah I'm just jerkin your chain bro

Yeah could potentially break the axles I suppose, but I honestly don't think there's any worry there unless you plan on running slicks at the strip :P You'll spin right through first, which won't break the axles nor transmission.

I dunno man, I think you could break into the 10's with a good launch. You're hitting 100mph in ~7seconds, maybe a little more, for sure, be interesting to see what she's capable of

It definitely seems as though the 6spd helps with the powerband though. Looks like it is a lot more responsive and power comes on earlier which is awesome
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Old 01-27-2013, 12:21 PM   #4550
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It's definitely possible to break axles and diffs launching on street tires. I know of STIs that have done it. I think 10's are remotely possible with slicks and a couple hundred pounds removed from my car. But. Not an expert at launching so it would be tough. The 6 speed definitely seems peppier in any gear, which makes sense because 1-5 are all slightly shorter than the 5 speed. It does cost me an extra shift in the 1/4mile though.
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