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| LFX 3.6/F23 option (Page 4/13) |
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Raydar
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FEB 26, 05:10 PM
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| quote | Originally posted by dobey:
...if i copy the URL for the image and paste it in a new tab, it shows fine...
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Works perfectly. Thanks.
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Gall757
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FEB 26, 05:39 PM
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| quote | Originally posted by Raydar:
Works perfectly. Thanks. |
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For the rest of us:
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Raydar
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FEB 26, 06:14 PM
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| quote | Originally posted by mender:
As far as I can tell, the F23 is in the normal location, same as it would be if it was attached to the stock 2.8. No measurements but based on visually comparing it to my other Fiero that is up on the hoist beside the LLT/F23.
If you look back to Dobey's post with the 60 degree and Q4 bellhousings and compare the dowel locations to the axle location with a straight edge across the screen, they look to be very close, enough so that I suspect they are the same.
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It looks very close, to me, as well. Any differences will likely be minor.
With that said, if the Quad 4 F23 works, then a Quad 4 Getrag (actually, I'm thinking the later HTOB Beretta T550) should work as well. And it will be able to use stock configuration Fiero tranny mounts.)
I wonder which FDR would be most desirable with the HF V6. That might be the deciding factor for me.
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Slammed
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FEB 26, 06:22 PM
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Very cool. What kind of engine management solutions are there for the LFX? Stock PCM programmable or what? [This message has been edited by Slammed (edited 02-26-2016).]
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dobey
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FEB 26, 07:32 PM
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| quote | Originally posted by Slammed:
Very cool. What kind of engine management solutions are there for the LFX? Stock PCM programmable or what?
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Stock ECM is the only option I know of that is in a reasonable range of cost. The few aftermarket options which can do SIDI seem to be very expensive. I asked Haltech previously if SIDI would be supported on their Elite unit, and was told they were working on it, but I don't know if that's available yet. I haven't seen any SIDI swaps done on Mighty Car Mods yet, anyway.
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Raydar
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FEB 26, 07:51 PM
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| quote | Originally posted by Slammed:
Very cool. What kind of engine management solutions are there for the LFX? Stock PCM programmable or what?
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I was looking at doing a 3900/LZ9 swap, but this one suddenly became a lot more appealing, due to the tranny option that appears to be available.
The 3900 (probably) uses an E37 ECM. The 3900 also already exists in a manual configuration (Pontiac G6.)
I asked around, and was told that an E37 could be made to run stand alone in a manual tranny configuration.
I'm thinking that the LFX would use something similar - or at least a similar generation ECM. The LFX also was available in a manual tranny configuration, so I have to believe that it's possible to make it run stand alone.
A while back, I was considering an LY7/3.6, but the power of the 3900 is within shouting distance, in a much more compact package, so I kind of gave up on that. Bang for the buck, bla, bla, bla...
But I did make some inquiries.
http://www.fiero.nl/forum/A...-1-085257-3.html#p81
Of course, compared to the LY7, the LFX is a whole 'nother animal.
With all of that said...
Talk with Ryan Gick / gmtuners.com / DarthFiero on the forum. He's who I talked with regarding the 3900. If anyone here can do it, it would probably be Ryan.[This message has been edited by Raydar (edited 02-26-2016).]
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dobey
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FEB 26, 08:04 PM
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| quote | Originally posted by Raydar:
I was looking at doing a 3900/LZ9 swap, but this one suddenly became a lot more appealing, due to the tranny option that appears to be available.
The 3900 (probably) uses an E37 ECM. The 3900 also already exists in a manual configuration (Pontiac G6.)
I asked around, and was told that an E37 could be made to run stand alone in a manual tranny configuration.
I'm thinking that the LFX would use something similar - or at least a similar generation ECM. The LFX also was available in a manual tranny configuration, so I have to believe that it's possible to make it run stand alone.
A while back, I was considering an LY7/3.6, but the power of the 3900 is within shouting distance, in a much more compact package, so I kind of gave up on that. Bang for the buck, bla, bla, bla...
But I did make some inquiries.
http://www.fiero.nl/forum/A...-1-085257-3.html#p81
Of course, compared to the LY7, the LFX is a whole 'nother animal.
With all of that said...
Talk with Ryan Gick / gmtuners.com / DarthFiero on the forum. He's who I talked with regarding the 3900. If anyone here can do it, it would probably be Ryan.
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The earlier SIDI engines all used different ECMs from their non-SIDI coutnerparts. The electronic requirements for firing the injectors on the SIDI engine are different from the traditional injectors, so OEMs use different ECMs for them. You won't be able to use the stock ECM from a non-SIDI configuration to drive a SIDI engine, but almost all of the ECMs should be able to be used in a manual configuration, as the same ECMs were used across different engine families and drivetrains, so almost all have the bits to flip for manual versus auto.
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Raydar
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FEB 26, 08:30 PM
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| quote | Originally posted by dobey:
The earlier SIDI engines all used different ECMs from their non-SIDI coutnerparts. The electronic requirements for firing the injectors on the SIDI engine are different from the traditional injectors, so OEMs use different ECMs for them. You won't be able to use the stock ECM from a non-SIDI configuration to drive a SIDI engine, but almost all of the ECMs should be able to be used in a manual configuration, as the same ECMs were used across different engine families and drivetrains, so almost all have the bits to flip for manual versus auto.
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I understand that the injectors will fire differently. Hell... we can't even agree how to properly fire multecs with an ECM that was designed for pintle-type injectors. 
My point is that all of these ECMs are from the same generation. Maybe even using the same hardware.
Since the LFX is installed in a Camaro, among other popular cars, I have to believe that there is some support available, in the aftermarket, if not right here.
I haven't poked around to see which ECM is used by the LFX, but it wouldn't surprise me if it's the E37 or E38.
Edit - a quick search seems to reveal that the SIDI V6 uses an E39 or E39A PCM.
Applies to the Camaro, Acadia, and a bunch of others.
https://www.efilive.com/gm-gas-vehicles
2nd edit - It would appear that support has been around for a while.
http://www.hptuners.com/for...E92-E39A-ECM-support[This message has been edited by Raydar (edited 02-26-2016).]
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mender
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FEB 26, 08:58 PM
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I drew the lines connecting the dowels and a line to the centre of the axle location. There's a slight difference in the angle of the transmissions; taking that into account I'd say that they're very close or the same. For more confirmation, check the internal ribbing vs the dowel locations; again very close or the same.[This message has been edited by mender (edited 02-27-2016).]
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mender
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FEB 27, 12:35 PM
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| quote | Originally posted by Raydar:
It looks very close, to me, as well. Any differences will likely be minor.
With that said, if the Quad 4 F23 works, then a Quad 4 Getrag (actually, I'm thinking the later HTOB Beretta T550) should work as well. And it will be able to use stock configuration Fiero tranny mounts.)
I wonder which FDR would be most desirable with the HF V6. That might be the deciding factor for me. |
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Thanks for that, i was concentrating on the F23 because of the low cost and good availability but the stock Fiero 282 with a Quad4 bellhousing would be the simplest solution. As you said, stock mounts, shift linkage, etc. As it turns out I have one of those sitting on my shop floor, the Q4 282 bellhousing is what started this whole thing.[This message has been edited by mender (edited 02-27-2016).]
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