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Old 08-16-2019, 11:05 PM   #876
Barge
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Quote:
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I also need to decide on modifying the ancient original engine harness or building one from scratch. Kind of worried about all of the wires sealing correctly but I do have several new oem engine harness connectors with pins and grommets.
Make a new harness.

I custom made one for mine with tefzel wire, all motorsports heatshrink. So much nicer.

Also you can get every connector you need brand new. I sourced all mine new but i also changed a bunch of stuff to accommodate all the sensor/devices changes i've made.
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Old 08-16-2019, 11:12 PM   #877
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I bought eight or so oem type connector (same as the original grays that came on the 93-01) pairs with male and female. Happened to catch some company on ebay selling some stock they didn't use. Some are the same pin count as original, and others have fewer if I decide to add more gadgets. I was also considering isolating the high current wires on their own connectors and having the sensitive circuits on others. Don't have my own garage unfortunately, or I could try fitting things up bit by bit. Everything has to be done after work..at work. It's tough to be motivated to stay after.

Also purchased a few different 25-50' lengths quality tin plated wire but not enough to do a complete wire job. Even got some quality crimpers designed specifically for the tiny oem style terminals. There are some cool websites that offer great prices on quality connectors and accessories.
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Old 09-19-2019, 03:13 PM   #878
KillerBMotorsport
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Another Happy Spoolinator Customer @ Snail Performance

Mods:
IAG Stage 3 Tuff shortblock
Headgames Pocket-ported Heads /w a full valvetrain upgrade
GCS S1 cams
GTX3576 gen2 (KB Spoolinator turbo kit)
KB ELH /w EWG, Full 3" exhaust
ID1700 injectors
-8an/-6an feed/return fuel lines
Radium Dual Pump Surge tank /w AEM 320 pumps (secondary pump triggered by a Hobbs switch)
Speed Density kit /w 3.5 MAP sensor
TGV deletes
FMIC
IAG Comp AOS
Cobb Flexfuel kit
Misc: oil cooler and accusump
Tuning Goals:
Primarily for the track/road course


Last edited by KillerBMotorsport; 09-19-2019 at 03:23 PM.
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Old 09-19-2019, 11:38 PM   #879
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Impressive!

What are your impressions on using hobbs switch type setups for pumps? Obviously the switch engagement accuracy will vary slightly so far as pressure is concerned, so does the pressure regulator react so quickly the ecu doesn't need to compensate when the second pump kicks in?

I'm deciding on which way to go with possibly voltage boosting the 400, instead of running twins, only when running at the upper end of the power range.
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Old 09-21-2019, 11:56 PM   #880
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So there's no gtx3067 gen 2.

But there IS a gen 2 67mm wheel, and a gt30 hotside & compressor cover CAN be machined to fit it (i.e you can get a gen 2 upgrade for your gen 1).

I presume garrett didn't sell enough to bother making a gen 2 version, but boy is it tempting to get one made...


I had a chat with GCG turbochargers over here in aussieland and apparently the 82mm wheel can be mated to the gt40 hotside too, effectively a gtx4082 gen 2 if you want to go totally baller.

Last edited by vicious_fishes; 09-22-2019 at 12:01 AM.
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Old 09-22-2019, 12:28 PM   #881
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Quote:
Originally Posted by vicious_fishes View Post
So there's no gtx3067 gen 2.

But there IS a gen 2 67mm wheel, and a gt30 hotside & compressor cover CAN be machined to fit it (i.e you can get a gen 2 upgrade for your gen 1).

I presume garrett didn't sell enough to bother making a gen 2 version, but boy is it tempting to get one made...


I had a chat with GCG turbochargers over here in aussieland and apparently the 82mm wheel can be mated to the gt40 hotside too, effectively a gtx4082 gen 2 if you want to go totally baller.
yeah I think i read some where that the gen 2 2867 compressor wont fit in the gen 1 housing for some reason so yeah housing too probably easier to but a super core
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Old 09-22-2019, 12:40 PM   #882
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Quote:
Originally Posted by KillerBMotorsport View Post
Another Happy Spoolinator Customer @ Snail Performance

Mods:
IAG Stage 3 Tuff shortblock
Headgames Pocket-ported Heads /w a full valvetrain upgrade
GCS S1 cams
GTX3576 gen2 (KB Spoolinator turbo kit)
KB ELH /w EWG, Full 3" exhaust
ID1700 injectors
-8an/-6an feed/return fuel lines
Radium Dual Pump Surge tank /w AEM 320 pumps (secondary pump triggered by a Hobbs switch)
Speed Density kit /w 3.5 MAP sensor
TGV deletes
FMIC
IAG Comp AOS
Cobb Flexfuel kit
Misc: oil cooler and accusump
Tuning Goals:
Primarily for the track/road course



Very nice for sure. One question though.. Looks like power is dropping off quite a bit after 6,300... Would those heads and cams not allow you to push higher through the rev range to closer to 8,000rpm while continuing making (or at least holding) power as well?
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Old 09-23-2019, 02:44 PM   #883
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Quote:
Originally Posted by 2slofouru View Post
Impressive!

What are your impressions on using hobbs switch type setups for pumps? Obviously the switch engagement accuracy will vary slightly so far as pressure is concerned, so does the pressure regulator react so quickly the ecu doesn't need to compensate when the second pump kicks in?

I'm deciding on which way to go with possibly voltage boosting the 400, instead of running twins, only when running at the upper end of the power range.
I wish I had an answer for you but we don't use Hobbs switches.

Nick
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Old 09-23-2019, 02:52 PM   #884
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Last edited by KillerBMotorsport; 09-23-2019 at 03:04 PM.
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Old 09-23-2019, 03:01 PM   #885
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Originally Posted by eaglehunter View Post
Very nice for sure. One question though.. Looks like power is dropping off quite a bit after 6,300... Would those heads and cams not allow you to push higher through the rev range to closer to 8,000rpm while continuing making (or at least holding) power as well?
5% drop-off isn't what I'd consider to be quite a bit. There is always going to be some amount of drop as the compressor flows into and beyond the ideal efficiency range.

We didn't test/tune this car at our shop, nor have we ever used those cams. Based on our own personal experience, I would say on the street that drop off is likely gone or near non-existent and it revs out a bit more. One thing that can be somewhat limiting with dyno tuning is airflow. You'll never have airflow as good as you do on the street
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Old 09-24-2019, 03:25 AM   #886
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most of that kind of stuff is either cam profiles or a small restriction somewhere e.g a catted exhaust.

a 3576 has more than enough airflow to keep up.
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Old 09-24-2019, 10:32 AM   #887
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Originally Posted by vicious_fishes View Post
most of that kind of stuff is either cam profiles or a small restriction somewhere e.g a catted exhaust.

a 3576 has more than enough airflow to keep up.
Agreed
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Old 09-26-2019, 01:14 AM   #888
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Agreed
Yeah, I still remember the dyno plots from when dom & micah did the original destroker 2.35 holding full power (zero dropoff) to 9,000rpm with a gen 1 gtx3582 that iirc was a 0.82 hotside.

they also had 282 degree cams in it.


high rpm airflow is not the issue with a turbo this size, cam profile is. if you want high rpm power, you need some lumpy cams. s1's are the most "streetable" cam GSC make: https://www.power-division.com/subar...ake-camshafts/


throw some cranky cams in it and this thing would scream out to 8,000.

great info to know exactly what's possible RE: spool & peak power with a gen 2 3576 on an EJ though.

Last edited by vicious_fishes; 09-26-2019 at 01:19 AM.
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Old 09-26-2019, 01:20 AM   #889
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on a related note, anyone put a 3071 (either gen) on one of these kits?
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Old 10-20-2019, 12:05 PM   #890
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so it looks like the new g series g30-660 is the beastmode turbo to get.

basically a gtx3067 with a 3071's inducer and 17% more airflow.

so yeah. imagine this spool with 17% more power.
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Old 10-20-2019, 03:39 PM   #891
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I wonder if the spool is really going to be similar, though. Garrett's compressor wheels are steadily getting smaller, but if you look at the compressor maps you can see that they are have to spin them faster to compensate for the smaller diameter.

I'd love to see a pair of 3rd-gear data logs comparing a current turbo to one that it replaces. Or any form of apples-to-apples comparison, really.

And +1 for the taper in the dyno chart above being a non-issue. A handful of people have told me over the years that there was no point revving my old GT3076 to 8000 RPM, and I always suspected they were wrong... but now that I've been running it that way for a few months, I know they were wrong.

Shifting to a higher gear costs a ton of torque where it really matters (at the wheels), so it makes sense to rev a lot higher than many people assume from just looking at dyno charts.
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Old 10-20-2019, 04:44 PM   #892
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Quote:
Originally Posted by vicious_fishes View Post
most of that kind of stuff is either cam profiles or a small restriction somewhere e.g a catted exhaust.

a 3576 has more than enough airflow to keep up.
Quote:
Originally Posted by KillerBMotorsport View Post
Agreed
Quote:
Originally Posted by vicious_fishes View Post
Yeah, I still remember the dyno plots from when dom & micah did the original destroker 2.35 holding full power (zero dropoff) to 9,000rpm with a gen 1 gtx3582 that iirc was a 0.82 hotside.

they also had 282 degree cams in it.


high rpm airflow is not the issue with a turbo this size, cam profile is. if you want high rpm power, you need some lumpy cams. s1's are the most "streetable" cam GSC make: https://www.power-division.com/subar...ake-camshafts/


throw some cranky cams in it and this thing would scream out to 8,000.

great info to know exactly what's possible RE: spool & peak power with a gen 2 3576 on an EJ though.
This is what I'm shooting for. I have the S2 cams and will have more than enough fuel. Although the exhaust will be 3" there won't be any restrictions sans resonator and large muffler. Can't do the trendy hood or side exit thing for my street car.
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Old 10-21-2019, 12:16 PM   #893
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If you're running s2 cams then i'm going to assume it's a 2.5/79mm stroke.

I'd rev it out to 8,000. gen 2 3576 like the previous guy i assume?
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Old 10-21-2019, 11:21 PM   #894
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dd you guys check out the eturbo that garret is going to start producing? probably going to be super expensive but instant spool on a big turbo......Wow
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Old 10-22-2019, 09:56 PM   #895
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dd you guys check out the eturbo that garret is going to start producing? probably going to be super expensive but instant spool on a big turbo......Wow
Cool tech, but to integrate a brushless setup into the tune and have room for the power supply and integrate it is likely going to be a major pain, in our cars at least. And yeah, it should be hella pricey for a while. Eventually it could trickle down to mere mortals.
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Old 10-23-2019, 06:36 PM   #896
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Originally Posted by 2slofouru View Post
Cool tech, but to integrate a brushless setup into the tune and have room for the power supply and integrate it is likely going to be a major pain, in our cars at least. And yeah, it should be hella pricey for a while. Eventually it could trickle down to mere mortals.
ture but think about how we can use a big 35r and get to start to spool at 3000 and amke power all the way up to 9000.. talk about a wide power band
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Old 10-28-2019, 10:05 AM   #897
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compound turbo guys have been working on that kind of thing for decades.
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Old 10-28-2019, 10:52 AM   #898
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compound turbo guys have been working on that kind of thing for decades.
True. and the Subaru firing order makes it extremely difficult. No one has done it well to date from what I've seen (many I've not seen them all?).

Something I considered trying many years ago, but ditched as the cost and likely ok results were not worth it.

The electric turbos have been in use for some time now and I would expect to find them more mainstream over the next 5-10 years. We shall see
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Old 10-28-2019, 02:09 PM   #899
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so it looks like the new g series g30-660 is the beastmode turbo to get.

basically a gtx3067 with a 3071's inducer and 17% more airflow.

so yeah. imagine this spool with 17% more power.
I just saw a direct swap from a gtx3071 gen2 to a g30-660 and they are identical. A little better off boost response and the compressor ran out of efficiency before the turbine on this setup, 1.8 honda b-series with full torque at 5200rpm and holding torque flat to 10,000rpm making 600whp at 10k. Dyno graph was pretty much identical and driving experience favoured the g30.
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Old 10-28-2019, 02:12 PM   #900
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I just saw a direct swap from a gtx3071 gen2 to a g30-660 and they are identical. A little better off boost response and the compressor ran out of efficiency before the turbine on this setup, 1.8 honda b-series with full torque at 5200rpm and holding torque flat to 10,000rpm making 600whp at 10k. Dyno graph was pretty much identical and driving experience favoured the g30.
yeah it has the inducer size of the 3071 with the exducer size of the 3067 so i'd expect the transient response to be better and a tiiiny bit faster spool. the real benefit of garrett's new stuff is the huge increase left of the surge line.

see if you can get the dyno plots for us?

Last edited by vicious_fishes; 10-29-2019 at 12:43 AM.
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