LNF Engine Swaps

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11-06-2011
cobaltssoverbooster

LNF Engine Swaps

Figure id make a thread on this that people could reference to since these seem to be a bit more complicated than others when swapping due to fueling systems and the capability of not being able to have a standalone unless you pay the big moneys to major companies for a custom one. hopefully this can benefit all since i see this as a great engine to swap...high gas mileage and plenty of power for toys and dd's

im planning on doing a swap in the future but am looking to find out all of the issues, kinks, do's-dont's, ideas etc....... before getting under way

id like to know for starts a few things hopefully people already know the answers...

how much of the computers other than the ecu will i need to get the engine to start?

Do i need to run a matched instrument cluster from the donor vehicle? i would really like to run AM Gauges if possible.

How did you mount your engine in the vehicle.....details like transverse mounted or standard ferwd setup, and angle of the engine?
11-06-2011
Iam Broke

Vince (Trifecta) can do a standalone on the ECU, otherwise you need the BCM and harnesses. VATS gets in the way. Do a search here and on GMSC.net and or LNF Performance for the LNF powered airboat and contact Chuckitt via email or PM. They did it on an airboat.
11-06-2011
cobaltssoverbooster

is the vats programming in the bcm because in that case id just use the harness and remove everything i dont need to save weight. keeping the obd port as well of course.
11-06-2011
Iam Broke

A lot of stuff is in the BCM, not just the VATS. Email Vince and/or Chuckitt
11-06-2011
cobaltssoverbooster

yea im emailing vince now and i got some other questions for him as well and ill get those answers posted here so everyone can understand what it takes.
11-07-2011
cobaltssoverbooster

Newest Info:

Vince says its basically a layer and you install it and with the vin unlocked in hpt you perform a read entire and carry on tuning as usual with hpt so no he is not steeling or taking away from hpt he just giving us a temporary fix until hpt finds the controlls etc. to put in their program for us down the road. there are no additional tuning paramaters in the new "layer". all this layer does is disable the VATS and BCM functions to allow startup and normal running.

After the flash the bare minimum requirements are a engine harness and the factory ecu. Which is awesome since i can now cut that thing open and remove all the harness peices i no longer wish to have as part of the ecu harness. i like how easy this is going to make all of this go....8D
11-07-2011
Iam Broke

Toldya. :D
11-07-2011
cobaltssoverbooster

this is cool man all im going to have to do is bend and weld my own rollcage and then remove the firewall and possibly the floorboard so i can make a tunnel for the driveshaft and then the rest is straight forward money magic.
11-07-2011
Gimpster

Thats pretty sweet that Vince is offering that. I'll give credit where credit is due.

I can think of a number of projects where an RWD LNF would be neeeeat.
11-08-2011
cobaltssoverbooster

i know hes got it in the air boats and i have seen another eco swap into a boat with dual lsj but thats totally different lol i think its in michigan on one of the lakes. been like 2 yrs since i saw it lol
11-09-2011
Gimpster

I think an LNF in a broken $300 Miata would be kinda choice.
11-11-2011
silverbullet08

that or a single cab colorado would be fun.. nissan 240sx too.... list goes on....
11-12-2011
turbofreak

Quote:

Originally Posted by Gimpster

I think an LNF in a broken $300 Miata would be kinda choice.

Funny you would say that cause that is what I am doing except I am using
a 04 Mazdaspeed and taking out the Mazda 1.8 turbo which only makes about 170 ft# and using a tuned LNF. Engine is from a 400 mi Solstice.
Using whole drive train including 5 spd and diff from CTS. Fits pretty well
except rack interferes with LNF front sump. Pretty easy to convert to rear sump. LNF weighs less than iron block MSM engine with 2x the torque.

Interested in what Vince means by layering.

frank
11-12-2011
Iam Broke

'Layering' a Trifecta tune is writing the TF file with his EZFlash, but a layer tune allows us to tune on top of the tables we cannot see in the TF tune with the tables we have in HPT with a write cal. It is the best of both worlds. Was a necessity for more boost before HPT unlocked the turbo tables for us.
11-12-2011
jboogie67

I bought a boosted miata recently and am already missing the torgue and power band and way better gearing of the LNF. I've already got an RX7 rear in it and have seriously been considering this for a project next year. I'd really rather do this than an LS* swap. I really like the idea of being able to dial up or down a 100hp. Off to check pricing on wrecked GXP/redlines.
11-13-2011
cobaltssoverbooster

Quote:

Originally Posted by jboogie67

I bought a boosted miata recently and am already missing the torgue and power band and way better gearing of the LNF. I've already got an RX7 rear in it and have seriously been considering this for a project next year. I'd really rather do this than an LS* swap. I really like the idea of being able to dial up or down a 100hp. Off to check pricing on wrecked GXP/redlines.

uve been beat my bud is doing it right now
lol
i like how as soon as i bring this up here everyone starts to look at wrecked gxp.redlines fucking competition geeze
11-13-2011
Leafy

Dammit why couldnt GM have made a light weigth cheap, well handling, POS in the 80's. Now that would be the perfect car to put this in and go have fun in Street Mod.
11-13-2011
jboogie67

Quote:

Originally Posted by cobaltssoverbooster

uve been beat my bud is doing it right now
lol
i like how as soon as i bring this up here everyone starts to look at wrecked gxp.redlines fucking competition geeze

didn't realize it was a competition?
11-13-2011
Iam Broke

Quote:

Originally Posted by Leafy

Dammit why couldnt GM have made a light weigth cheap, well handling, POS in the 80's. Now that would be the perfect car to put this in and go have fun in Street Mod.

'88 Fiero, Lotus did the suspension the last year they made them.
11-13-2011
Leafy

Quote:

Originally Posted by Iam Broke

'88 Fiero, Lotus did the suspension the last year they made them.

Good point, I managed to find the chevy chevette after that but I would have to blast it 400 pounds the fiero I would have to just somehow pull 100-300 pounds out of it without gutting the interior.
11-14-2011
cobaltssoverbooster

Quote:

Originally Posted by jboogie67

didn't realize it was a competition?

no its just that crashed good engine condition gxp/redlines are already hard to find at least for me.....
11-14-2011
Leafy

Quote:

Originally Posted by cobaltssoverbooster

no its just that crashed good engine condition gxp/redlines are already hard to find at least for me.....

So? Buy the LNF from a cobalt then and steal the mounts from a 2.4na sky/solstice or order them from the dealer. Then engine block and head are the same part irrc and the difference is the mounts.
11-14-2011
cobaltssoverbooster

yea but i want the trans and diff from the gxp/redline as well. full swap deal.

and for anyone who may need this vince wants 400$ for the vats disable....
11-14-2011
turbofreak

and for anyone who may need this vince wants 400$ for the vats disable....im trying to work on something else for price but we will see.[/QUOTE]

Does that $400 buy vats disable AND diabling any errors from missing
body module and abs???

frank
11-14-2011
cobaltssoverbooster

yes thats the one....it disregards the whole bcm which is where vats is which is the reason they wont start as a stand alone.
11-14-2011
gmtech16450yz

Hey Alex (cssob) are you in Florida or California? I might know of a low mileage salvaged title Sky Redline for sale that would make an excellent project car. Either that or put a little cash in it and it would be a driver since it's only got body damage, everything else is perfect. Car is in CA though.
11-15-2011
cobaltssoverbooster

In Fl right now after school though it's on just searchin is tough and I could do better if I reactivated my solstice forum account it's been a while though
11-17-2011
cobaltssoverbooster

hpt has mentioned that if it is a value in the ecu that they will in the future not this immediate months have this available to us. Hpt is glad to get around to request for ecu unlocks as per the request features thread, and is possibly looking into rekindling the efforts to search for this value. If it is not there and it is required to flash the bcm to get our result they might not be able to help.

i am by no means releasing info to stir up false hopes, just stating they are thinking about looking into it again and maybe making it available to us in the future.
10-29-2015
larboc1

Quote:

Originally Posted by cobaltssoverbooster

hpt has mentioned that if it is a value in the ecu that they will in the future not this immediate months have this available to us. Hpt is glad to get around to request for ecu unlocks as per the request features thread, and is possibly looking into rekindling the efforts to search for this value. If it is not there and it is required to flash the bcm to get our result they might not be able to help.

i am by no means releasing info to stir up false hopes, just stating they are thinking about looking into it again and maybe making it available to us in the future.

It's the future, any possibility of being able to do it in HPT yet?
10-30-2015
mkriebs

Quote:

Originally Posted by larboc1

It's the future, any possibility of being able to do it in HPT yet?

I wouldn't hold my breath. The LNF ECU is dead in the water and there are better options out there as far as ECUs are concerned. The Buick/Opel ECU (LEA/LDK ECU) has much more control over engine parameters and has VATS control through HPT. This would be my recommendation, especially in a vehicle that would have no BCM to contend with such as a kit car or sand car.
10-30-2015
BadCop

mkriebs did you get a E39A working standalone?

I have two different LHU/LDK ECMs (E39A): Opel and Buick.
Tried to get them working in a "kit" car without BCM, ABS, ...

None of them works without HS-CAN.
Opel cuts throttle and boost at 2700 rpm.
Buick cuts throttle and boost at 3100 rpm.

Yes you can disable VATS - the engine will start, but there is no power above 3000 rpm...
10-31-2015
mkriebs

BadCop, I have not, but I was considering doing an E39A swap in my Solstice this winter, but that is some good info. I wish I knew better how that stuff worked.
11-02-2015
2000Firehawk

https://www.chevrolet.com/content/da...19328839-1.pdf

http://media.gm.com/media/us/en/chev...1101-nova.html
11-02-2015
BadCop

That's a LTG crateengine including ECM with special standalone Software/OS.

You think we could use that E39A for a LNF/LDK/LHU instead of the LTG?
Just ask because there are many differences to this "new" LTG type compared to our "old" engines?

I have to check the pinout and compare all sensors... :)

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