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Old 04-18-2014, 10:48 AM   #121
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Thanks.
The number varies wildly because people's different interpretation of "street driving"
Also which 5speed are you talking about, because this specific year 06-07 WRX 3.7 actually has one of the weakest. I've tuned a metric ton of these to about 280-320wtq and most held up ok, yet blew up 2 on my personal cars as soon as I went past 350wtq or so.

The FXT/LGT has a slightly beefier 4.44 trans that has held up to 350-400wtq or so.

This specific wagon has a complete STi drivetrain though.
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Old 04-18-2014, 10:48 AM   #122
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From what I remember the 5 speeds lack strength in 1st and 2nd compared to the transmission in the STI. My memory is a little rough though.
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Old 04-18-2014, 11:00 AM   #123
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STi box is stronger in literally every single way. It can handle 2-3x the torque
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Old 05-07-2014, 10:17 PM   #124
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Welp, finally did a baseline dyno plot for the wrx I built.

NO boost controller, just wastegate 15psi, conservative afr, NO TIMING (9* at peak tapering to 13* at redline, basically nothing)


I CANNOT wait for 25psi and 20* of timing at peak load and 30* at redline.
This thing hasn't even woken up yet.
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Old 05-07-2014, 10:24 PM   #125
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That is a very smooth power curve. Nice work Vlad.
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Old 05-07-2014, 10:28 PM   #126
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Fuel used?
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Old 05-07-2014, 10:33 PM   #127
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corn
I cannot wait to actually start pushing this thing. This thing is just begging for it - boost is actually tapering UP, on its own, on a subaru, for a change hahahah
I literally cannot be holding it back any more than this.
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Old 05-07-2014, 11:01 PM   #128
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That's very nice. Compression ratio? Sorry, I've been going thru my v6 timing map today and I like to get a comparison, see how (in?)efficient my chamber is compared to a subaru.

And to answer your above question, my 05 OBXT 5 speed. Has the 4.444. Brothers 05 LGT has the 4.111. I hated the 6 speed in my 04 sti. Too much shifting. I would chose to spend more on 5 speed gear set and limited front & center diffs than swap to a sti 6 speed, even though the dccd was ****.
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Old 05-07-2014, 11:06 PM   #129
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As long as the 3.6 diff in the Miata has longer ratios than the 6 speed in my TDI, I'll be happy. I'm in 3rd gear before 30 mph.

I expect numerous awd tire roasting videos Vlad.
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Old 05-08-2014, 01:01 AM   #130
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We really went outside the norm on pistons and tried completely new (to me) pistons: Wossner 9.1:1 4032 forging. They're ok. Noisier than I expected this type of forging to be, almost as noisy as the 2160 CP's I've used in other builds. Lowend response seems to be a bit better than stock, and we'll find out how they hold up to the power to come.

Yeah the 04 sti drivetrain in here isn't my cup of tea either. Too much shifting. But he wanted something to hold down the power, have beefier axles, and the sti brakes. So here we are.

Haha, videos hopefully soon.
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Old 05-08-2014, 09:26 AM   #131
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Interesting, I haven't heard of Wossner. Nor 2160 alloy

My 2618 Wisecos with a very loose fit are completely quiet throughout the temp range strangely enough. Their wrist pins are offset and my skirts are coated, but I think that's common across all brands nowadays. Your "basically nothing" timing got me wondering as I was running 5 degrees more than you on my V6 (which is my old 1.8 93 octane ignition map unmodified, 14 at torque peak, 20 at 7400) and it wasn't working out. I'm using "9.5:1" pistons on 93 octane. I have since found an OEM map and it's ~14 degrees less than my 4cyl map, but that's a early 90's 87octane OEM map. Apples/oranges application of course, but thanks for the prospective and sorry about the thread drift.

In for AWD power drift launches!
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Old 05-08-2014, 10:04 AM   #132
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Yeah 2618 lol.
That's the thing that surprised us, because biggest reason for going with this alloy was quietness and lack of oil consuption and general OEM like operation. I keep wondering if I'm running them too loose (2 thou ptw clearance), but its well within their "recommended spec" so I dunno. All those things you mentioned are on these as well, and what I really liked was the uber thick ringlands on them - more than twice thicker than Mahle, which was our initial choice. I gathered that they're made in Germany, are a pretty legit brand in europe, and finally moving into the US market/scene. All reviews thus far are good.

Yeah on pump I usually tend to stay in the 10*peak load to about 18-22* at redline, but this thing is on corn, and he wants to make some power, so we shall be exploring the limits of either his turbo or his fuel system, as the engine should be able to max out either (or both). This turbo hasn't even gotten into its efficiency range.
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Old 05-08-2014, 09:39 PM   #133
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We use wossner pistons in our motorcross bikes. They are much more solid than a factory cast piston. They seem to hold up pretty good. I haven't seen them for car applications though. In for 25psi vids
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Old 05-10-2014, 03:37 AM   #134
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Nice.

I tuned this bad boy today:
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Old 05-10-2014, 12:35 PM   #135
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Oh, for cute! What's in it?
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Old 05-10-2014, 03:25 PM   #136
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V7 sti drivetrain and interior, and a stock 2L but port&polished everything.
Its ok. I'm not a 2L fan. Its like the 1.6 of subaru's

*edit: here are the plots. car was very det limited and didn't want to make too much more power than this, and owner didn't want me to push it.

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Old 05-11-2014, 12:17 AM   #137
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and here's a 2011 I just did today.


pump 91, completely stock other than a downpipe, uncorrected, and unsmoothed.
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Old 05-11-2014, 08:56 PM   #138
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Good lord, where do Subaru's get all that torque? Or do I just spend way to much time looking at Miata dynos
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Old 05-12-2014, 03:21 PM   #139
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Quote:
Originally Posted by EO2K View Post
Good lord, where do Subaru's get all that torque? Or do I just spend way to much time looking at Miata dynos
Big awesome flowing 2.5l + tiny turbo
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Old 05-12-2014, 03:24 PM   #140
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lol pretty much. though that one has a vf52, so not quite a baby turbo, but still small all things considered.

You wanna make gobs of power get an evo.
You wanna make gobs of torque, and in a useable place in the powerband, get a subaru.
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