I Think I Found My Ultimate BH Legacy, Part II

Kinja'd!!! "Boxer_4" (Boxer_4)
09/09/2020 at 21:30 • Filed to: None

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This one’s a bit !!!error: Indecipherable SUB-paragraph formatting!!! , being as it has an EZ30D, and was swapped to a 5-speed. No telling which 5-speed, but I do like the idea.

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Part I, here.


DISCUSSION (20)


Kinja'd!!! HammerheadFistpunch > Boxer_4
09/09/2020 at 21:33

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I like. Though its too bad that the EZ30 required premium for only so/so output and potential. GREAT sound though, so much better than the series of wet farts that is the EJ...no offense to your username. 


Kinja'd!!! dogisbadob > Boxer_4
09/09/2020 at 21:47

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The EZ doesn’t have the head gasket problems the EJ has, so you’re better off :o)

Also, the EZ uses a timing chain, not a stupid belt

You get the fun manual transmission H6 plus the electronic AWD used on h automatics. Remember that manual transmission Subarus have a different AWD that’s all-mechanical with no electronics and is always 50/50 F/R

The red mudflaps add 5 hp


Kinja'd!!! BrianGriffin thinks “reliable” is just a state of mind > Boxer_4
09/09/2020 at 21:57

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In my life, I have sold a lot of cars for too little because I was bored and/or needed the money and/or was really dumb.

In 2009, I sold a H6, ‘01 LLBean with 75k miles for about $5500. I’d happily buy it back today. One of many bad mistakes in my life.

Anyway. That looks good. Watch out for rust, especially in the rear door wells. 


Kinja'd!!! HammerheadFistpunch > dogisbadob
09/09/2020 at 21:58

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Wouldn’t you ditch the electronic control with the manual swap?  The center diff/clutch packs are in the transmission not the transfer case.


Kinja'd!!! OPPOsaurus WRX > HammerheadFistpunch
09/09/2020 at 22:00

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i don’ t get why Subaru doesn’ t do much with performance. My buddy’s H6 Outback is slow as hell. Even a Camry starts at 200 and can come with 300 hp, The Legacy only has 180 or 260.


Kinja'd!!! HammerheadFistpunch > OPPOsaurus WRX
09/09/2020 at 22:11

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Up until the turbo revolution given turbo engines NA levels of usability (regular gas, broad and linear power delivery, etc) the boxer engine was a dead end for growth . There is only so much you can do with the dimensional constraints of that engine. You can’t do the stroke to bore ratios that modern engines have with very good thermal efficiencies without making them unacceptably wide. The 3.6 used offset rods to give it additional stroke and even then it was still oversquare. The 3.6 was pretty much as big as a subaru engine would ever get.


Kinja'd!!! OPPOsaurus WRX > HammerheadFistpunch
09/09/2020 at 22:17

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but at this point why doesn’ t every model have an STi -like option? the Outback got the WRX motor. Why not the STi motor ?  what if they did to the H-6 what they do to the 4?


Kinja'd!!! HammerheadFistpunch > OPPOsaurus WRX
09/09/2020 at 22:26

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Oh, THAT question. Because Subaru got married , had their first kid and it’ s time to get serious and stop messing around . i.e. they got whipped by volume


Kinja'd!!! dogisbadob > HammerheadFistpunch
09/09/2020 at 22:33

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oops

I hadn’t thought about that. Yeah you’ re right, the electronic AWD is probably gone.


Kinja'd!!! Highlander-Datsuns are Forever > Boxer_4
09/09/2020 at 22:47

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I’d rather see a 3.3 L SVX motor in there but the 3.0 is less slow than the 4 banger.


Kinja'd!!! Snuze: Needs another Swede > HammerheadFistpunch
09/09/2020 at 23:59

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There’s nothing wrong with ov er square engines from a performance perspective. In fact big bores mean bigger valves which means moving more gases for bigger bangs. The real problem is emissions, that lower thermal efficiency tends to mean increased CO2 production, amongst other issues. Subaru has likely chosen to prioritize tuning their their NA engines to keep their ULEV status to cater to market demands.


Kinja'd!!! HammerheadFistpunch > Snuze: Needs another Swede
09/10/2020 at 10:28

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This exactly.


Kinja'd!!! Snuze: Needs another Swede > HammerheadFistpunch
09/10/2020 at 14:46

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I’ve occasionally wondered what it would take to make a Subaru NA engine make some real power. I mean, I know the answer is ultimately lots of $$$. But I’m curious what exactly would be involved.

The EZ30s make 10.7:1 compression, which isn’t bad at all, especially for a port injection engine. I’m guessing it has little valves and small cams. I wonder how much you can hog the valve seat area out? I wonder what other choke points exist in the engine and how hard they would be to solve? I think big valves and big bumpy sticks and addressing any major intake/exhaust restrictions could get one into the low 300HP range.

I also think 100 HP per liter would be very sporty and still docile enough for street driving, and also not have too many issues long term. Consider that a similar era Porsche 911 Carerra S makes 355 HP out of 3.8L.


Kinja'd!!! HammerheadFistpunch > Snuze: Needs another Swede
09/10/2020 at 15:08

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I can ’t remember where I heard this information but i remember reading when the variable timing and lift system was installed on the EZ30"R” that it was a porsche licensed design (the valve system) .

I think there is potential and it would sound righteous compared to a normal subaru


Kinja'd!!! Snuze: Needs another Swede > HammerheadFistpunch
09/10/2020 at 15:42

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Hmm, I didn’t know about that, but it wouldn’t surprise me. Weird historical tidbit, but GM was striking deals with Porsche shops to send Corvair customers to, since the engines were so similar. There are only so many flat engines out there, now basically only Porsche and Subaru, so it would make sense that there would be some collaboration, if not borrowing from one another.

Agreed that it would sound pretty awesome. And cams are not super hard, physically anyways - weld them up and regrind. It’s getting the lift and duration right that could be problematic, as well as understanding the VVT to make sure you also don’t smash valves into pistons.

If you really wanted to get crazy, throw ITBs on it and equal length headers, and maybe a little 6 " button clutch. Drivability goes out the window, but that sound....


Kinja'd!!! Boxer_4 > Highlander-Datsuns are Forever
09/10/2020 at 17:31

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I’m always conflicted when I see the SVX’s EG33 swapped into things. On one hand, it’s an awesome engine that sounds great and is very robust - probably Subaru’s best 6 cylinder along with the phase II EZ30. On the other hand, an EG33 in something else generally means one less SVX on the road...


Kinja'd!!! Boxer_4 > BrianGriffin thinks “reliable” is just a state of mind
09/10/2020 at 17:36

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I wish I were in the market, I hope to be in a few years. I’m still working on other priorities at the moment (i.e. a place to actually keep more than a daily, and a place work on stuff...)

The H6 engines are great. My dad has a ‘12 Outback with the EZ36D. Sure, a 2GR-FE makes more power and gets better fuel economy, but there is just something awesome about the Subaru flat sixes.

I’m all too aware of the rust issues - luckily the newer stuff seems to be holding up a lot better.  A friend of mine has an ‘03 WRX with a rear quarter that just erupted in the usual spot.  Something that needs attention soon...


Kinja'd!!! Boxer_4 > dogisbadob
09/10/2020 at 17:46

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This would be the typical continuous AWD found in the manual transmission models - 50/50 split all the time. The H6 models would have originally had the VTD AWD system with a 45/55 split and planetary gear center differential.

Personally, I don’t mind the timing belt. The timing belt job isn’t too difficult, and your timing components get a refresh every so often. I know the timing chain is technically lifetime, but there is no such thing as a lifetime mechanical device ( or fluid for that matter, but that’s a discussion for another time ).

Also, the EZ has an annoying setup where the water pump is driven off of the timing chain, so you basically need to do a timing chain job if you need to replace the water pump.  They fixed this on the FA/FB engines where the water pump is now driven off the accessory belt.  The EJ engines of course had the water pump driven off the timing belt.  


Kinja'd!!! dogisbadob > Boxer_4
09/10/2020 at 17:50

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The VQ Nissans also have a timing chain-driven water pump, but replacing it doesn’t require a new timing chain. The job is only difficult because of access reasons. Thankfully I didn’t have to replace it on mine before I got rid of it! The timing chain was still fine after 300k

I deifnitely agree there’s no such thing as lifetime fluid!


Kinja'd!!! Boxer_4 > HammerheadFistpunch
09/11/2020 at 02:25

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No offense taken, I love them both.

The EZ does sound nice...