Ecotec le5 Turbo 2.4 Build (Page 6/28)
jediperk OCT 25, 05:35 PM
Some info from zzp on ecotec's:

2.0, 2.2, and 2.4 have swappable parts.

2.0 and 2.2 are the same block (86mm bore) but the 2.0 has piston squirters. You can add them to other blocks but the cost doesn't make it worth it normally when building the blocks. Better to just start with a 2.0 block. All the ZZP 86mm blocks come with piston squirters.

Being that the parts are interchangeable it doesn't make sense when building a 2.2, to stay at 2.2 liters. You’re better off with a 2.4 block (88mm bore) or using 2.0 parts.

Assuming you have the right year parts, you can bolt any head on any block w/o any issue. The flywheels and cranks and balancers, everything interchanges. The 2.2 and 2.4 cranks are cast with 6 flywheel bolts. They use the same flywheel and we make a 9.5” flywheel with 6 bolts so that you can use those cranks with the larger 2.0 clutches.

Otherwise for strength in boosted applications, you want a 2.0 crank as it is the only forged crank.

You can use a 2.4 block with a 2.0 crank to achieve 2.1 liters. Then you have the strength with more displacement. Each route has some pros and cons depending what you’re doing.

There are a few styles of reluctor wheels on the crankshafts and when changing motors, sometimes this needs to be addressed. The newer 2.2's, all 2.4's and all turbo 2.0's have the same crank position sensors and the reluctor wheels are all clocked the same. The LSJ is a gen 1 motor and the reluctor wheel is clocked differently than on Gen 2 & 3 motors. The 2.4 crank uses a smaller reluctor wheel so that the piston and rods clear it but the function and pickup is essentially the same. While all of this sounds complicated and can cause serious issues if done wrong, it's not actually a difficult problem to address. We recommend working with ZZP so that we can set you up properly for what you are trying to do. As long as we know what motor you are replacing or what vehicle you have, it's very easy for us to give you the right parts.

http://shop.zzperformance.c...-4L-Short-Block.aspx
jediperk OCT 25, 05:55 PM
Great build so far. I think when you get this together and drive it you will probably stop worrying about trying to get to 500+ HP. These engines make so much low end TQ that even with the mid engine layout going for you it is still going to be a hand full at only 350HP you will probably start out at. It's going to be hard to keep the drive train together if you go much past that. Most high output turbo ecotec's make 20-50 TQ more than HP and the combination of twin scroll turbos mounted directly to the exhaust manifold combined with VVT makes for little to no lag and peak TQ at 2000 or so rpm's depending on what size turbo you run. I have a question for you on your exhaust though. Are you planning on running a CAT right off the turbo and then dumping straight out the back with no muffler (letting the turbo act as the muffler)?
4thfiero OCT 26, 10:29 AM
Hey. Thanks for all that info.

No I'm planning on using a greddy muffler with a single out. Kinda make it look importish. That's the plan so far.
wftb OCT 26, 10:18 PM
I tried running a turbo then cat no muffler setup and it was way to noisy for me .It works on remote turbo mount vettes and camaros but they have the benefit of long pipes to the turbos .With a fiero ecotec , the exhaust goes a very short distance to the back of the car .It would be a lot easier to plumb everything if ecotecs exhausted out the front like stock fiero motors did .
4thfiero OCT 26, 10:25 PM
jediperk, do u work for ZZP?
jediperk OCT 27, 01:20 PM

quote
Originally posted by wftb:

I tried running a turbo then cat no muffler setup and it was way to noisy for me .It works on remote turbo mount vettes and camaros but they have the benefit of long pipes to the turbos .With a fiero ecotec , the exhaust goes a very short distance to the back of the car .It would be a lot easier to plumb everything if ecotecs exhausted out the front like stock fiero motors did .



I would go with a Supertrap muffler then. I was curious as to how loud it would be though. I'm thinking about doing one of these down the road...
jediperk OCT 27, 01:25 PM

quote
Originally posted by 4thfiero:

jediperk, do u work for ZZP?



I wish. I work for Uncle Sam in the "bringing bad things to bad people boot to arse" department I spent a lot of time on their site researching and have bought stuff from them in the past for my Cobalt and HHR. They are a great resource for Ecotec and 3800's.
4thfiero OCT 27, 01:47 PM
I agree, I got my clutch and flywheel from them.

In the far future if my LE5 needs an overhaul or God forbid something happens to it, i'll consider getting there racing block at 2.0, 2.1 or 2.4 with port injection, not DI.and use that block to build on.But for now, im very confident my current block will hold up just fine for a long time.
jediperk OCT 27, 02:25 PM

quote
Originally posted by 4thfiero:

I agree, I got my clutch and flywheel from them.

In the far future if my LE5 needs an overhaul or God forbid something happens to it, i'll consider getting there racing block at 2.0, 2.1 or 2.4 with port injection, not DI.and use that block to build on.But for now, im very confident my current block will hold up just fine for a long time.



As long as you don't get crazy with the boost I think you will be fine and like I posted before, You probably will be so satisfied with it at 15-18 psi that you will not want to go higher anyways. It's hard to describe the power delivery of these engines to folks that have not driven one. If you have the turbo sized properly and everything else dialed in properly the TQ is going to hit fast and hard, even more so than a 3800S/C setup. Just keep an eye on the drivetrain, that is most likely where the problems will happen if they happen at all...

One other thing that is factoring in my decision to go LNF when the time comes is knowing I can have the launch control and "no lift shift" capabilities.
Not sure if you thought about that or if it would be possible to have on an LE5. But I would recommend you look into it.

[This message has been edited by jediperk (edited 10-27-2014).]

4thfiero OCT 27, 03:25 PM
I actually have looked into launch control a long time ago since the GTR came out with it. There are a few different ways to make that work with almost any engine. But what is this "no lift shift" thing u mentioned???

and yeah im sticking to about 15 lbs boost. 300-350 hp is good enough for me.

[This message has been edited by 4thfiero (edited 10-27-2014).]