2.4 Ecotec swapper info / options. (Page 1/5) Raydar OCT 12, 05:18 PM While researching the 2.4 Ecotec LE5 engine for a possible swap, I stumbled across some info that some may find useful. First, the LE5 also powers the Polaris Slingshot. Basically a 3 wheel motorcycle. This appears to open up a whole new set of possibilities for aftermarket support. (They sell a gorgeous 4 into 1 stainless header. I don't know if it will fit a Fiero application, however.) Click me! There are also several aftermarket stand alone ECMs and harnesses available. One supports drive by wire, and the other supports a cable operated throttle body. They're not inexpensive, however. And me! They also offer some discounts on eBay, for the drive by wire stuff. wftb OCT 12, 06:17 PM For the price of that wiring harness you could probably get a base cobalt SS with an LE5 in it .They are old cars now. The super/turbo motors were option motors in the cobalt ss, LE5 was the base motor.Not hard to make it work if you have the whole car to work with. The standalone system does make it easier but that is a big cash outlay. Those headers won't work, they point your exhaust piping straight at your axle. It is a solstice header designed to have a cat bolted right to it pointing down and back toward the rear of a solstice/sky and of course the slingshot that is also front engine rear drive configuration. Raydar OCT 12, 06:28 PM I saw that it pointed straight down, but it looked like there might be room for an elbow, or something. Looked like there might be nearly a foot. As I said, I don't know that it would fit. BillS OCT 13, 10:50 AM The advantage of the LE5 is that they are a decent price. The downside is that these N/A motors are hard to get any major output improvements from. The turbo versions (LNF) are more expensive, have more 'packaging' challenges but start at 260 bhp, have a factory optional tune for 290 bhp and with less than a couple of thousand bucks you can tune them for around 375 bhp without even unbuttoning the engine. Depends on what you are after. Just the 2.4 LE5 would be a significant step up for a Fiero. Raydar OCT 13, 07:07 PM quote Originally posted by BillS: The advantage of the LE5 is that they are a decent price. Just the 2.4 LE5 would be a significant step up for a Fiero. That's kind of why I was considering this. Depending upon the application, they make between 170 and 190 HP, right out of the box. A header would probably be worth another 10 HP, at least. (Again, that depends upon who you want to listen to. I've heard as much as 20. But I've seen pictures of both the header and the stock manifold. The header has potential for huge flow increases, just based upon the size of the pipes. A free-flowing muffler and pipes wouldn't hurt.) Although it may not make financial sense not to, I don't really care anything about a boosted application, at this point. Just a personal preference. I haven't even researched cams and porting. I've just begun my research. I'm not even sure that this is what I'm going to do. Just discovered the info, above, and thought I'd share. Thanks for your input. Fiero2m4Fastback OCT 13, 10:31 PM 2.2l ecotec + the right turbo = 400hp Engine management can be done cheap with speeduino(under $200 with lots of assembly) or a microsquirt($350, wire it up inside or outside the engine bay and go). wftb OCT 13, 11:01 PM Water meth is a must for any boosted stock 2.2.Add an air to water intercooler and you might make it survive at about 220hp. But the ring lands on the 2.2 are very thin and they will break off and grenade the engine at higher power levels.A lot of people have tried with the same results. At the end of the video I can see some black smoke coming up at the back of the car .I have a turbo 2.2 and as far as I am concerned it is the best bang for the buck. You have to put in Eagle rods and Wiseco or equivalent pistons (and I did that) and then about 500 hp is the limit. NA 2.4 do respond well to exhaust tuning. Stock 2.4's have different power ratings depending on the vehicle they are in due to restrictive exhausts in some models. Will OCT 15, 09:44 AM quote Originally posted by BillS: The advantage of the LE5 is that they are a decent price. The downside is that these N/A motors are hard to get any major output improvements from. The turbo versions (LNF) are more expensive, have more 'packaging' challenges but start at 260 bhp, have a factory optional tune for 290 bhp and with less than a couple of thousand bucks you can tune them for around 375 bhp without even unbuttoning the engine. Depends on what you are after. Just the 2.4 LE5 would be a significant step up for a Fiero. I always thought it would be fun to upgrade the turbo on an LNF and pair that combo up the starter generator and accessory drive from the LAT used in Saturn Vue and Aura Green Line cars. That way a Fiero could have a hybrid turbo powertrain using the electric motor for "torque fill" like McLaren does. fierofinder OCT 15, 11:00 AM One thing to consider would be the 2.4 doesn't have as many aftermarket options like the 2.0 or 2.2 does. If you do an ecotec prior to 2009 make sure you replace the timing chain tensioner with the upgraded version. Im dealing with this issue now in my cobalt. wftb OCT 15, 04:08 PM quote Originally posted by fierofinder: One thing to consider would be the 2.4 doesn't have as many aftermarket options like the 2.0 or 2.2 does. If you do an ecotec prior to 2009 make sure you replace the timing chain tensioner with the upgraded version. Im dealing with this issue now in my cobalt. This is a must and I recomend getting a tensioner from Crate Engine Depot to make sure you get the latest version. A lot of dealers have earlier versions on hand and they will sell them to you because they don't know any better. The newest tensioner is the 3rd design. Unfortunately there is no longer that much available for the older Ecotecs like mine. GM Racing block, forged steel crankshaft, complete racing head assembly and a host of other parts are no longer available.