ECOTEC 2.0 LTG SWAP

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br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Sun Jul 28, 2019 8:53 pm

Just make sure the external pump can feed 50-60psi and it will work fine. Youll have to plumb the FP sensor into your system downstream of the regulator as the engine requires a fuel pressure input upstream of the HP pump. Make sure the regulator is located as close to the HP pump as possible so you don't have a significant amount of deadheaded fuel upstream of the HP pump.
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Mon Jul 29, 2019 9:02 am

Forgot about the fuel pressure sensor. I’ll have to see what that requires for compatibility.

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Mon Jul 29, 2019 10:24 am

Easily done with a tee, -6AN lines will be large enough for stock HP up to slightly molded. The LP FP sensor is a female thread. Part # 13579380
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Mon Jul 29, 2019 1:16 pm

I don’t remember a wire for the fuel pressure sensor in the harness. I wonder if Swaptime tuned that out? I would think the computer will be looking for that signal.

Thanks for the part number.

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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC » Mon Jul 29, 2019 5:17 pm

Don't think the PCM actually cares about low pressure side. It's basically a lift pump for the high pressure pump on these engines.

Here's a few pics with a cracker in the back seat. :cheers:
20190629_153312.jpg
20190705_163612-EFFECTS.jpg
-Russ
-----------------------------------
The only thing stopping you is FEAR
400+hp Ecotec, 12x7.6 DBDO, 80" 3B Maximus, 2.3 OX,85+mph, water = purely optional
Life begins at 2 BAR, Just a good ole boy

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Mon Jul 29, 2019 6:36 pm

OneBFC wrote:Don't think the PCM actually cares about low pressure side. It's basically a lift pump for the high pressure pump on these engines.

Here's a few pics with a cracker in the back seat. :cheers:

20190629_153312.jpg

20190705_163612-EFFECTS.jpg

Russ,

Depends on the tune. Ill have to look back at the LTG vs LHU wiring. I know the LTG LP Fuel Pressure Signal is fed directly to the ECM vs in previous years the LP signal only fed the FPCM.
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Wed Jul 31, 2019 6:25 pm

Boat looks great Russ. Looks like there is a fuel pressure sensor intergral to the in-tank low pressure fuel pump. I still don't know if the PCM will require that signal as the LTG Crate Motor instructions suggest you can use other fuel pumps as long as they supply fuel at the necessary pressure and rate.

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Wed Jul 31, 2019 7:04 pm

In-tank pressure sensor is for vapor recovery system which you wont have installed. If you read the LTG Crate Motor instructions the inline sensor is included in the harness kit.
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Thu Aug 01, 2019 7:50 am

Yea I saw that as I kept reading. GM actually has the pin out of the PCM plugs in those instructions. I have the location and wire color and know I am looking for a 3 wire connector for that sensor. I'll see if its in the harness. Hopefully its one of the plugs I assumed was for the transmmission.

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airduds
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Re: ECOTEC 2.0 LTG SWAP

Post by airduds » Fri Aug 02, 2019 3:26 am

Wife and I rented a Camaro convertible with a LTG awhile back and drove up the west coast from LA to Astoria. What a jewel of an engine.
Hard times create strong men. Strong men create good times. Good times create weak men. Weak men create hard times.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Thu Oct 03, 2019 8:47 am

For those interested I have not abandoned the project. Just been real busy with work and some personal out of town trips. Starting to get back on the project now. I'll have a real update before long. I have been practicing my tig welding on some porch brackets for the camp and almost have that done. I'll be ordering the remaining sensors, components and modifying the harness next to get the engine started.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Tue Oct 15, 2019 7:51 am

Spent a few bucks over the weekend ordering parts. Ordered a K&N intake kit for the Turbo, MAP sensor, O2 Sensor, Fuel Pump, Fuel Pressure regulator, Fuel Pressure gauge, Fuel Filter, some AN line and fittings, GM quick connect x -6 AN adapter....and some misc hardware. Let me just say that the selection for fuel pumps, regulators, filters, AN fittings will blow your mind! Jegs site was hard for me to use to find the fittings I was looking for. If i did not type in the exact name according to the law of Mr Jeg then i would get 6,000 or more results......really....and in no particular order.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Tue Oct 15, 2019 1:25 pm

I’m looking at intercoolers. I know Russ has a big treadstone unit on his boat that does fantastic. I’m looking for recommendations. Person / company I could call and discuss my needs with...... that I could buy from. Don’t want to spend $1000 but I know I probably need to spend more than a $100. Any other intercooler related discussion is welcome. I need to learn some intercooler speak.

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Tue Oct 15, 2019 2:39 pm

I use summit to find the parts I need and then Amazon to order them with prime account. usually get a better price, but summit beats jegs by a mile when finding things.

I run CXRacing stuff on my Ecotec. No issue really... cheap but works.
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Tue Oct 15, 2019 4:39 pm

br, what unit do you have and any idea on efficiency thru it as far as temp reduction or headloss? I think if I size a unit for 400HP I will be good. I don’t plan to mod to that level. I used JEGS because I had the app and an account. I will definitely go another route next time. It was painful.
Last edited by FISHSTICKER on Tue Oct 15, 2019 7:03 pm, edited 1 time in total.

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Tue Oct 15, 2019 4:45 pm

Their IC0035
https://www.cxracing.com/IC0035?search=IC0035&limit=100

When its 90deg out my temps dont climb much above 100F still... I am pushing close to 300HP with the 1.4L now
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Posts: 134
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Tue Oct 15, 2019 7:21 pm

Thanks. That looks like a real good price. What would be considered real good peformance? Less than 10 degree increase in charge temp? Less than 5?

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA » Tue Oct 15, 2019 7:53 pm

Depends on boost pressure, timing, fuel type... colder is always better
12x7'6" American Airboat
1.4L GM Ecotec - Stock Turbo
2:1 Century Ecotec Drive
80" 2-bld WW Stump Puller
"Nothin' as Fine as Hearing a Turbo Whine"

UnoWho
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Re: ECOTEC 2.0 LTG SWAP

Post by UnoWho » Tue Oct 15, 2019 8:01 pm


UnoWho
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Re: ECOTEC 2.0 LTG SWAP

Post by UnoWho » Wed Oct 16, 2019 2:51 pm


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keys2pines
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Re: ECOTEC 2.0 LTG SWAP

Post by keys2pines » Fri Oct 18, 2019 7:47 am

FISHSTICKER wrote:
Tue Oct 15, 2019 1:25 pm
I’m looking at intercoolers. I know Russ has a big treadstone unit on his boat that does fantastic. I’m looking for recommendations. Person / company I could call and discuss my needs with...... that I could buy from. Don’t want to spend $1000 but I know I probably need to spend more than a $100. Any other intercooler related discussion is welcome. I need to learn some intercooler speak.
I had a turbo 96 Camaro for 15 years. I actually used an ebay intercooler kit back in 2007, and it was on the car until I sold it last year. My IAT temps rarely went more than 5-10 degrees over ambient when running hard. I was told to use the biggest one I could fit, and it worked out perfect!
12x6'8" Taylor deckover, 383 DD, 72" Sensenich JM
Our keys house for rent, 10% off for SA members https://rentalsfloridakeys.com/view-uni ... /#image-10 :usa:

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Fri Oct 18, 2019 3:47 pm

So many different opinions on turbo intercoolers out there. Spoke to some guys at a local ricer speed shop and I’m sad to say I think I know more than them and I don’t know shit. Mishimoto, treadstone, cheap eBay..... you can find 5 star and “would never buy again” reviews on all of them... Still undecided on that.

So I have some progress.

Image


Honk if you see it :wink:
Last edited by FISHSTICKER on Fri Oct 18, 2019 4:41 pm, edited 2 times in total.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Fri Oct 18, 2019 3:48 pm

Got a few parts in also

Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Fri Oct 18, 2019 4:00 pm

I have an AEM fuel pressure regulator. It has the following connections. 1 barbed vacume hose connection , 1 1/8 npt gauge port. 1 port directly opposite the adjustment screw that you can’t blow thru. Two ports opposite each other that you can blow thru.

Here are the directions.

Image

There are no markings on the unit. I assume the port you can’t blow thru is the return and the other two are interchangeable inlet/outlet? I was disappointed in the directions. And the directions are wrong. All three of those ports have the same threads. Oh, can I just plug the vacume port? Don’t think I need that. Or do I?

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER » Fri Oct 18, 2019 4:02 pm

Image

Fuel pressure regulator what I think is the return port.

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