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Old 05-31-2017, 09:00 PM   #3426
vicious_fishes
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Originally Posted by Jazz30-06 View Post
Somewhat, yea. People also ten to not try and argue with 3 other people that are providing facts and reasoning. That's a lot of work...

As far as the ECU selection, the 2500 might not be the best option. It really depends on what they want out of the car. After all, a full 2500 setup is around $3k, whereas something like an EMU will run most everything most people could want for around $1500. It just depends on end user requirements.
The haltech 750 will work if you run a falcon throttle body (i'm nasioc's unofficial dealer). The only downside is losing AVCS control, but I'm fairly confident it remains in an "always on" mode.

All the people saying the ez30 can't handle boost are crackpots. There are many ez30's running raptor superchargers for years at around 350whp completely unopened.

It is the toothpick rods that eventually break, following by frying the pistons. The cylinder walls themselves have stacks of material, the most you'll ever have to do is brace (pin) them to stop flex at very high power levels, and at that point you'd be a fool not to just get the deck closed.

Can we please stop posting BS.
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Old 05-31-2017, 10:18 PM   #3427
Titter
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the 750 handles 6 injectors? i though it only did 4. thats good to know. the 2500 will do avcs tho.

what would be the USDM equivalent to the falcon throttle body?
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Old 06-01-2017, 02:24 AM   #3428
vicious_fishes
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Yes the 750 is for 6 cyl. It doesn't have fly by wire though.

There isn't one, if you want one you'll need to get one sent over by either me or see if you can find one on the australian ebay
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Old 06-01-2017, 07:34 AM   #3429
Titter
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ahh cool good to know ty.
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Old 09-10-2017, 06:55 AM   #3430
vicious_fishes
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So totally out of the blue I know, but does anyone have an ez30 apart or know how thick the piston ringlands are?

I'd be interested to compare to the ej25 and maybe take a rough stab at what point they'd crack if you started winding boost into the stock engine.
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Old 09-25-2017, 02:57 PM   #3431
sponaugle
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Originally Posted by HumanBoost View Post
. My info comes from a well known Subaru engine builder who has many customers in this forum. This same company also builds (and races) many of those pre-built "Stage" short blocks (ej20, ej25, and ez30). Regarding Jeff Sponaugle's stock sleeve EZ30 "r" build:

1. How many miles were put on it?
2. What was the max rpm limit?
3. How much boost was run consistently?

. I never said the EZ30 "r" rods were not weak, they are. My research includes everything I could find on the internet including the Australian Liberty communities where some users reported sleeve problems when surpassing 10psi on stock EZ30 engine sleeves. Also, your last statement about the td04 and HX40 is misleading if both turbo's are outputting the same volume of airflow and a good intercooling system maintains the same air temperature into the motor. Keep in mind, "boost" is merely a measure of pressure inside the intake manifold. PV = nRT

The EZ30R in my car is coming up on 8 years old now. I run anywhere between 13 and 18psi depending on the use case.


This was at about 16psi, which is a map I ran for this road since this was my first time up this hill. (it was a closed road btw).

I ran my car yesterday at ORP at 16psi for the entire day, with most of that spent between 5k and 7k rpm at full throttle.

Honestly I am surprised how well this engine has held up given the significant abuse I have put it through. I have been running E85 for most of it's life, and with the power level I am running it is certainly knock resistant. I don't think I have ran regular gas in at least 6 years.

This is not a sleeved motor, just stock sleeves, ARP head studs, Supertech pistons, valves, and springs, Pauter rods, plus a really really old 35R. Factory rod and main bearings as well.

This winter the engine is coming out so I can put in the newer EZ from Perrins car (sleeved) that I am rebuilding.

Jeff Sponaugle
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Old 09-26-2017, 08:57 AM   #3432
vicious_fishes
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jeff - OEM pistons? what power level is it at?
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Old 09-26-2017, 10:17 AM   #3433
Patrick Olsen
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Not OEM pistons...
Quote:
Originally Posted by sponaugle View Post
This is not a sleeved motor, just stock sleeves, ARP head studs, Supertech pistons, valves, and springs, Pauter rods, plus a really really old 35R. Factory rod and main bearings as well.
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Old 09-26-2017, 11:22 AM   #3434
sponaugle
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Quote:
Originally Posted by vicious_fishes View Post
jeff - OEM pistons? what power level is it at?
As Patrick mentioned, supertech pistons. The stock pistons are both high compression and high silicon content, so not ideally suited for forced induction. I am running pretty big PWCs as well ( .004' ).

When I took apart Perrin's sleeved motor, I was surprised to see the PWCs were even larger ( almost .006' ). That engine ran great.

Power is between ~400whp and ~600whp depending on boost. I have usually run 16-18psi on the track, which is probably in the 500whp range.

I have been looking through the logs from this last track day, and I did have a few dips in oil pressure during hard cornering. Nothing crazy (down from perhaps 60psi to 35psi), but enough for me to consider looking at adding an accusump.

Jeff
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Old 09-26-2017, 07:39 PM   #3435
vicious_fishes
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Ah yes, i missed that.

Yours is basically fully built with off the shelf components then. I'd be interested to see just how much abuse it could take before it went bang. I have plans of sticking a gtx4088 on mine when i build it, one day...
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Old 10-04-2017, 04:04 PM   #3436
Patrick Olsen
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Quote:
Originally Posted by Patrick Olsen View Post
I picked up an '01 Outback wiring harness through car-part.com from a place out in WA. Wow, that's a helluva lot bigger bundle of snakes than I appreciated from looking at my own car!

So, it only took a couple years, but I finally culled the above down to just the connectors and pigtails that plug into the harnesses on the engine:





Quote:
Originally Posted by Patrick Olsen View Post
So, now I have a harness, I just have to figure out what the heck to do with it.
Unfortunately, this aspect ^^^ hasn't changed.
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