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Old May 28, 2020 | 03:00 PM
  #1501  
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Originally Posted by ayoustin
Thought that sounded familiar. My roommate is a ecotec fanatic. If you're gonna build one of those skip the LNF and LSJ. Just grab an LE5 from a scrapyard and drop a stock turbo setup from an LNF onto it. Will be plenty of fun for an exo car without being expensive at all.
Ohh I know your room mate. Has a Cobalt that is always broken and a funky colored X that he just got wrapped haha.

I already have a Cobalt SS with a LNF so thats what I would use as the donor. No way I would do a 2.4L with a LNF turbo. Thats a horrible combo. They peak power at like 5K and then drop hard. And they blow up past 300 whp. Ecotecs are my specialty. I have built over a hundred of them. The LNF is the way to go.

Originally Posted by letsgetthisdone
Looks cool, but I don't like that it uses the mac strut front suspension from the donor car as rear suspension. That could of course be changed, but it would be a good amount of work designing and SLA or multi link rear end.
Ya I dont like the mac strut rear either... I really dont think it would be too hard to add in a top arm to keep it IRS but I would need to have the chassis here to figure out arm length, geometry and possible mounting points. It would pretty much be the same rear suspension as my Bug which honestly wasnt too hard to design.
Old May 28, 2020 | 04:05 PM
  #1502  
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Originally Posted by Lumpy Sticks
. Ecotecs are my specialty. I have built over a hundred of them..
My friend's Atom has one in it. I was skeptical and thinking he should have waited to find one with a Honda motor.... but it's torquey, punch, quick, and seems to be holding up well. Not bad at all!
Old May 28, 2020 | 04:19 PM
  #1503  
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The Ecotec is a great engine. It's used as a spec engine in a few small buggy offroad racing classes. They run them bone stock and kick the **** out of them without much issue.
Old May 28, 2020 | 04:53 PM
  #1504  
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Originally Posted by kaj
My friend's Atom has one in it. I was skeptical and thinking he should have waited to find one with a Honda motor.... but it's torquey, punch, quick, and seems to be holding up well. Not bad at all!
Ya in the older Atoms they put the LSJs in them. They dont make the most power but are super torquey. Thats why the last Ecotec I had in my Bug I put on the LSJ blower. Flat TQ curve from 2500-7000 rpm. Was awesome! The LNF in bone stock form holds 90% of its TQ from 1800-5300 rpm which isnt bad either. Its just you are limited on how much power you can make cause of the DI system. No one really makes aftermarket injectors for them and the HPFP cant keep up either. E85 is not an option....

Originally Posted by letsgetthisdone
The Ecotec is a great engine. It's used as a spec engine in a few small buggy offroad racing classes. They run them bone stock and kick the **** out of them without much issue.
You nailed it. 90% of my customers race class 5 and 10. They just now moved on to the 2.5L which is the next gen Ecotec but they are having issues with them blowing up. The gen before those were the bullet proof ones. Its pretty easy to get 300 whp out of a NA 2.4L too while keeping it reliable.
Old May 28, 2020 | 05:12 PM
  #1505  
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Originally Posted by Lumpy Sticks
Ya in the older Atoms they put the LSJs in them. They dont make the most power but are super torquey. Thats why the last Ecotec I had in my Bug I put on the LSJ blower. Flat TQ curve from 2500-7000 rpm. Was awesome! The LNF in bone stock form holds 90% of its TQ from 1800-5300 rpm which isnt bad either. Its just you are limited on how much power you can make cause of the DI system. No one really makes aftermarket injectors for them and the HPFP cant keep up either. E85 is not an option....



You nailed it. 90% of my customers race class 5 and 10. They just now moved on to the 2.5L which is the next gen Ecotec but they are having issues with them blowing up. The gen before those were the bullet proof ones. Its pretty easy to get 300 whp out of a NA 2.4L too while keeping it reliable.
My friend is running flexfuel. It's been working so far, but I don't know how he went about it.
Old May 28, 2020 | 05:26 PM
  #1506  
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Originally Posted by kaj
My friend is running flexfuel. It's been working so far, but I don't know how he went about it.
E85 and lsj are fine. It's just the lnf you cant do e85. Most of the MPI ecotecs had flex fuel from the factory
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Old May 28, 2020 | 05:55 PM
  #1507  
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Originally Posted by Lumpy Sticks
Ya in the older Atoms they put the LSJs in them. They dont make the most power but are super torquey. Thats why the last Ecotec I had in my Bug I put on the LSJ blower. Flat TQ curve from 2500-7000 rpm. Was awesome! The LNF in bone stock form holds 90% of its TQ from 1800-5300 rpm which isnt bad either. Its just you are limited on how much power you can make cause of the DI system. No one really makes aftermarket injectors for them and the HPFP cant keep up either. E85 is not an option....



You nailed it. 90% of my customers race class 5 and 10. They just now moved on to the 2.5L which is the next gen Ecotec but they are having issues with them blowing up. The gen before those were the bullet proof ones. Its pretty easy to get 300 whp out of a NA 2.4L too while keeping it reliable.
I'm pretty sure class 12 allows them too (similar to class 10, but requires a beam front end).
Old May 28, 2020 | 06:59 PM
  #1508  
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Originally Posted by letsgetthisdone
I'm pretty sure class 12 allows them too (similar to class 10, but requires a beam front end).
Hmmm.... that I dont know for sure. I thought class 12 was still vw powered only. Again, not 100% sure. I have a rule book at work but I dont care enough to check it haha
Old May 28, 2020 | 07:19 PM
  #1509  
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Another sharkbite creation in the works , 2.0L, shooting for somewhere in the 850's awhp, Stay tuned for another magazine build.
Old May 28, 2020 | 09:18 PM
  #1510  
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Originally Posted by Sharkbite2000
Another sharkbite creation in the works , 2.0L, shooting for somewhere in the 850's awhp, Stay tuned for another magazine build.
<everyone chanting in unison>

Build thread! Build thread! Build thread!
Old May 28, 2020 | 10:27 PM
  #1511  
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Originally Posted by Lumpy Sticks
E85 and lsj are fine. It's just the lnf you cant do e85. Most of the MPI ecotecs had flex fuel from the factory
You could run e85 on the LNF, this reminds me of my life many years ago when I had a SS/TC. That car was fun to drive and nice around the track. I remember having one of the first built motor LNFs too.
Another motor option is also the LHU which was flex-fuel capable as well.
Old May 28, 2020 | 10:35 PM
  #1512  
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Originally Posted by Sharkbite2000
Another sharkbite creation in the works , 2.0L, shooting for somewhere in the 850's awhp, Stay tuned for another magazine build.
Magazine game is a lot different these days, especially with most of them being defunct or digital. I'll probably snag another one this year on my X actually. Changing up a few things on the car right now.
Old May 28, 2020 | 10:51 PM
  #1513  
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Originally Posted by Construct
I read that somewhere, but the specifications don't match.

Torque claimed wet/dry boiling points of 683F/439F ( http://www.torquebrakefluid.com/comp...ke_fluids.html )

Prospeed RS683 claims boiling points of 583F/394F ( https://www.pegasusautoracing.com/pr...sp?RecID=10510 )
That's a typo on Pegasus Auto's website. I guess I can notify them to update their description. If you look at the picture of the bottle it clearly says 683 degrees Fahrenheit. I can see if I have a bottle laying around. I already have tested it on multiple track days and the pedal feel is streets ahead better than any other fluid.
Old May 29, 2020 | 12:45 AM
  #1514  
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Originally Posted by deylag
That's a typo on Pegasus Auto's website. I guess I can notify them to update their description. If you look at the picture of the bottle it clearly says 683 degrees Fahrenheit. I can see if I have a bottle laying around. I already have tested it on multiple track days and the pedal feel is streets ahead better than any other fluid.
"683" is in it's name. Too funny
Old May 29, 2020 | 06:18 AM
  #1515  
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Huh, the bottle does say 683.

It's been this way for over a year now. Getting both of the most important specs for a brake fluid wrong (one off by 100, swapping two digits on the other) is a strange mistake.


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