Ecotec le5 Turbo 2.4 Build (Page 5/28)
dobey JUL 19, 09:07 AM

quote
Originally posted by wftb:
i did not take any apart .there are different GM part #s from those years for the crank and rods of the 06 07 years .i did not believe it until it was pointed out to me and various sites said the same thing .



Different part numbers doesn't mean they are forged. GM changes part numbers all the time, even on the exact same parts. It could just mean the parts were produced at a different plant than the previous years. All the pictures of stock LE5 internals that I can find, show cast crank and sintered rods.

[This message has been edited by dobey (edited 07-20-2014).]

BillS JUL 20, 04:27 PM

quote
Originally posted by dobey:


Different part numbers doesn't mean they are forged. GM changes part numbers all the time, even on the exact same parts, even. It could just mean the parts were produced at a different plant than the previous years. All the pictures of stock LE5 internals that I can find, show cast crank and sintered rods.



FYI the LE5 had forged connecting rods in 2006 and 2007 but switched to sintered metal in 2008 and later.

http://www.solsticeforum.co...s-please-read-66445/

There is a load of misinformation in this thread about the LNF engines, much of which Will has corrected. More careful research before repeating erroneous info would be nice.
dobey JUL 20, 05:22 PM

quote
Originally posted by BillS:
FYI the LE5 had forged connecting rods in 2006 and 2007 but switched to sintered metal in 2008 and later.

http://www.solsticeforum.co...s-please-read-66445/

There is a load of misinformation in this thread about the LNF engines, much of which Will has corrected. More careful research before repeating erroneous info would be nice.



Even if the LE5 did have forged rods for those two years (06/07), the crank was not forged. And GM claims the powered rods are stronger than the forged rods anyway.
4thfiero JUL 20, 09:23 PM

quote
Originally posted by wftb:

if you look at the pic the intercooler is in the left upper corner .there is a small rad that goes in the front of the car that fits in front of the radiator .all that runs to the back of the car are two 1/2" ID hoses .put the pump in the back or the front trunk , use a fan mounted on the front rad and add an ice box if you want .really not that complicated .go to frozenboost.com for kits and info .



So i checked this out, really making me consider running the water/air IC. So if im understanding this correctly.

1) The heat exchange mounts in the front of my car infront of my rad, and it connects to the intercooler in the rear with 1/2'' hoses that can easily be routed under the car correct?

2) With this setup, no boost lag correct? bcc the IC is still in the rear with only the heat exchange in the front?
zkhennings JUL 21, 02:29 AM

quote
Originally posted by 4thfiero:


So i checked this out, really making me consider running the water/air IC. So if im understanding this correctly.

1) The heat exchange mounts in the front of my car infront of my rad, and it connects to the intercooler in the rear with 1/2'' hoses that can easily be routed under the car correct?

2) With this setup, no boost lag correct? bcc the IC is still in the rear with only the heat exchange in the front?



Yup
Will JUL 21, 09:35 AM

quote
Originally posted by BillS:

FYI the LE5 had forged connecting rods in 2006 and 2007 but switched to sintered metal in 2008 and later.

http://www.solsticeforum.co...s-please-read-66445/

There is a load of misinformation in this thread about the LNF engines, much of which Will has corrected. More careful research before repeating erroneous info would be nice.



Interesting... the 2.4 received the LSJ rods for '06-'07 and something else's rods for '08?
wftb JUL 22, 01:26 AM
the info about the rods and crank surprised me because even my GM build book contradicts this .but i have the 3rd edition and it reflects info at time of printing i think .anyway i think the original intent of the LE5 was to be the performance version of the ecotec line .it was first introduced as the motor in the solstice and then became the stock motor in the cobalt SS .the LSJ and the LNF were the option motor for the SS cobalts . So the way it was first intended made sense to give the LE5 the better internals . But then the turbo motor became the go to option performance motor in most of the ecotec powered cars and SUV 's and GM got rid of the pricey parts to save money as the LE5 was not an option performance motor anymore .an air to water intercooler does not eliminate turbo lag .it just cools the charge better than air to air intercooling .in my car i get lag when i am too lazy to downshift to the right gear for the revs the motor is turning .if you want to eliminate turbo lag , run an automatic .you cant lug a small displacement four cylinder and expect instant throttle response (even a non turbo 4 ) . an automatic with almost instant downshifts solves that problem .
dobey JUL 22, 08:34 AM

quote
Originally posted by wftb:

the info about the rods and crank surprised me because even my GM build book contradicts this .but i have the 3rd edition and it reflects info at time of printing i think .



It's probably referencing the 2nd design rods then. Looking up the part # for the 1st design rods on several sites just says "discontinued" but no date is specified when the discontinuation occurred. If it happened in 07 at some time, it's likely that maybe 07 LE5 engines could have either the forged or sintered rods. Perhaps the reference available for the 07 engine showed sintered rods, when the third edition was updated. If there's a newer edition of the book, maybe it's been corrected? But unless you find someone with NOS 1st design rods sitting around, if you want to buy a new OEM set, you're going to get the sintered rods instead of the forged, since the 1st design has been discontinued.
4thfiero OCT 21, 08:53 PM
FINALLY got an update from my shop...

Here's whats done:

- Engine in
- ECU Mounted and wired
- Engine wired up!
- New DBW Gas Pedal Mounted no issues (I was worried about that)
- Battery mounted upfront
- Coolant lines hooked up.
- New high HP fuel pump installed (at the part now where gas tank just needs to be put back in)

That’s where we are, next on the list…

- Hook up fuel lines
- Mount intercooler to the FRONT OF THE CAR! YES! THE FRONT! Im so happy. I wanted it up front for looks, but was worried about turbo lag? Since engine is in the back and intercooler is up front? But he’s like “no…the lag would be like half a second to 4/3 of a second, which you would want for traction. apperantly you get WAY better performance out of a front mounted intercooler than a rear mounted one, the air is much cooler and you more HP. Plus it looks sick. So im happy about that.
- Get car running (by this Friday)
- Install Greddy exhaust
- Dyno
- DONE!

Im hoping to have pictures soon!
4thfiero OCT 23, 11:39 PM
Finally some pics! Engine is installed, wired (for the most part) Gotta hook up IC and fuel lines still.