ECOTEC 2.0 LTG SWAP

Automotive powered airboat discussion.
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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC »

FISHSTICKER wrote:
Tue Oct 29, 2019 7:47 am
I have about 4" clear right now with the 73" prop. So without a new cage I will be limited to 76" if im ok with 2" clearance. I was thinking of going with a 74" and calling it good. How much difference would 1" make..............
74 inch 3 blade Maximus.

Dont even bother looking elsewhere if you want a tractor and 50 to 60 mph is enough.

My old stock turbo engine with 76 maximus hit 69mph before I had to let out due to my setup was not safe enough at speed (on nose bad).

Here's the video for proof of that. Start watching just before 9 minutes. This was over 6 years ago.....Boat weighed 1739lbs with no fuel, no gear, no driver at the time. Today it weighs 1400 or so with an extra 100hp, 4 more inches of prop (80) and the same 2.38 ratio, but it's an Ox vs that noisy rotator in this video.
-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

FISHSTICKER
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Joined: Wed Aug 31, 2016 11:22 am
Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Thats what Andrew recommended and thats what Im going to order. I think that may be the video that made me start looking at the ecotec. Bad ass.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

I bought a intercooler kit from CX racing. $208 I think. Clamps, couplers, and pipe seem to be real good quality. The intercooler end tanks are cast and real smooth on the inside. The tube and fin look good. I’m going to use this kit to run it on the stand outside of the boat. If it does well I’ll use it in the boat. If not I’ll get another intercooler and reuse most of the pipe and other stuff. I plan to check inlet and outlet temp and pressure to get a feel for how it performes.
Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Image

My plan is to only have couplers on each end. Everything else will be welded when in the boat.

FISHSTICKER
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Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Gots me another fuel filter tooooo.
Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Aluminum welding first try with the TIG.
Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Fuel filter is from JEGS. Around 130GPH at 75PSI. You can disassemble and clean the stainless screen. Rated to 150 PSI.

FISHSTICKER
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Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Because there is no place to bolt a ground wire to the ECU I assume gounding the case is not necessary. It must only need the ground thru the harness. Correct?

SWAMPHUNTER45
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Re: ECOTEC 2.0 LTG SWAP

Post by SWAMPHUNTER45 »

Really coming along nice FISHSTICK !

The ECU question got me thinking, would the hardware to attaches it to the automobile not provide a grounding location for the module?

While the old GM 4 pin HEI is 44 plus years old, ironically we find module failures are very commonly associated with persons failing to properly ground the distributor. I am curious to hear Russ give the answer to this on your build.

br,lc,LA
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Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA »

ECM main ground is in the wiring harness not via the case. Usually one pin in X2 and another via X3 going to a single eye to bolt to the block
12x7'6" American Airboat
1.4L GM Ecotec - BNR GTX250 Turbo
2:1 Century Ecotec Drive
2-bld Whisper Tip 72
"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 »

Swamphunter, there is no good way to ground the case is why I was thinking it’s not required. Not a single bolt hole or threaded boss anywhere. I’m actually curious as to how they secure this ECM in the car to keep it from bouncing around. I originally thought it had to be grounded.

Of course the only ECM’s I have messed with are old Toyota trucks and they are bolted down.

br that’s what I was thinking the case was.

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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC »

You already got the ground answer. Super simple thankfully.

As to how it is mounted in vehicles....they use an injection molded housing that fits over the outside of the PCM and then that is bolted down. Somewhat like a glove with the glove bolted.

That's how mine is and has been since 2012.

I think you can just set it on some silicone pads and zip tie it down real well and call it a day.

Use 40A to 60A Durometer.
-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

FISHSTICKER
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Posts: 364
Joined: Wed Aug 31, 2016 11:22 am
Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

We going to call this way back Wednesday.
Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

And way way back Wednesday
Image

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Peach crown is good🙂.

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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC »

Some big boys there. Looks a bit sporty out too. Def punch the man card getting those two landed.

:salute:
-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

FISHSTICKER
Southern Airboat Member
Posts: 364
Joined: Wed Aug 31, 2016 11:22 am
Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

I got a big head last night. Too much cheap whisky. I’ll share some more big fish with you guys if y’all want to see them. 1994 till about 2014 we shot more state record book fish on my buddies boat “THE HEAVY METAL” than should be allow. 40 something top 10 fish if I remember correctly.

I know the connectors are pretty water resistant but I am thinking about putting a solid aluminum cover with an open bottom to keep rain off the PCM but still allow air flow. Does it generate much heat? I’m thinking maybe it does with the abundance of fins it has.

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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC »

FISHSTICKER wrote:
Thu Nov 07, 2019 3:36 pm
I got a big head last night. Too much cheap whisky. I’ll share some more big fish with you guys if y’all want to see them. 1994 till about 2014 we shot more state record book fish on my buddies boat “THE HEAVY METAL” than should be allow. 40 something top 10 fish if I remember correctly.

I know the connectors are pretty water resistant but I am thinking about putting a solid aluminum cover with an open bottom to keep rain off the PCM but still allow air flow. Does it generate much heat? I’m thinking maybe it does with the abundance of fins it has.
The pcm is very water resistant. Mine is out in the open right next to the prop. I wouldn't worry too much as long as you dont put any holes in it.
-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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Posts: 697
Joined: Wed Feb 16, 2005 10:29 pm
Location: Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by br,lc,LA »

Mines been submerged and cranked back up again... don't worry about a bit of rain and moisture.
12x7'6" American Airboat
1.4L GM Ecotec - BNR GTX250 Turbo
2:1 Century Ecotec Drive
2-bld Whisper Tip 72
"Nothin' as Fine as Hearing a Turbo Whine"

FISHSTICKER
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Joined: Wed Aug 31, 2016 11:22 am
Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

So no need for any protection. Cool. One less thing to do🙂
Last edited by FISHSTICKER on Thu Nov 07, 2019 7:22 pm, edited 1 time in total.

FISHSTICKER
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Location: French Settlement Louisiana

Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Image
Fresh snaper

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Did not work on the motor this weekend but me and my boy worked on the ducks
Image

CWAIS
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Re: ECOTEC 2.0 LTG SWAP

Post by CWAIS »

Nice hunt Fishsticker, I miss those days with my son.

FISHSTICKER
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Re: ECOTEC 2.0 LTG SWAP

Post by FISHSTICKER »

Good times with family and friends is what life is all about.

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OneBFC
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Re: ECOTEC 2.0 LTG SWAP

Post by OneBFC »

Need to frame that picture. Its perfect.

Good work Dad.
-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

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