[dluxx88]

Everyone keeps talkin about how the ecotech was designed to take a beating, but what kind of "beatings" did gm put it through on their dragster? is there a site with all the specs? how much aftermarket boost can it take before the rods go sky diving? can anyone help fill me in?

 

[brentil]

GM actually sells the book or cd of how they created the 1000HP Turbocharged ECOTEC engine. Using this book supposedly you can build your own if you had the money.
http://www.gmgoodwrench.com/perfpartsjsp/partlist.jsp?cat=9284&section=pp

Here are some links to various high powered ECOTEC cars.
http://www.ultimatecarpage.com/frame.php?file=car.php&carnum=1666
http://media.gm.com/servlet/Gateway...ewmonthlyreleasedetail.do?domain=3&docid=6912

 

[Fformula88]

GM has done various speed record runs and testing at the Bonneville Salt Flats with their high powered ecotecs too. Its probably part of that GM material Brentil linked to.

 

[brentil]

GM has done various speed record runs and testing at the Bonneville Salt Flats with their high powered ecotecs too. Its probably part of that GM material Brentil linked to.

Here's a nice quote to show the power of the über Cobalt SS.

Driver Nelson Hoyos piloted a race-prepared Cobalt SS at the Bonneville Salt Flats on Aug. 19, 2004, establishing a new mark in the G/Blown Fuel Altered class at 243.127 mph. The Cobalt SS, which is based on Chevy's new factory-built front-wheel-drive Super Sport, eclipsed the 212.684 mph mark established last year by GM engineer Jim Minneker in a Saturn ION Red Line quad coupe.

 

[DreamerDave]

in the G/Blown Fuel Altered class

I didn't catch that they were using nitro/methane! Yes I would imagine that motor was strengthened just a bit!

 

[cdb]

if my memory serves me (not likely) they tested the stock ecotec motor under boost and found the stock rods failed as it approached 300hp, wich may account for the forged rods in the supercharged ion red line and cobalt SS... i think they reduced the stroke a bit too in the boosted motors.

 

[Fformula88]

if my memory serves me (not likely) they tested the stock ecotec motor under boost and found the stock rods failed as it approached 300hp, wich may account for the forged rods in the supercharged ion red line and cobalt SS... i think they reduced the stroke a bit too in the boosted motors.

300 HP before doing any internal work is still pretty good for the base motor. Plus, it looks like the 2.4L motor destined for the Solstice has a lot of the blown motors upgrades already in it, so it may be able to handle well over 300 before major internal work is needed.

 

[Rik]

This is an article about the initial development of the racing Ecotec and the stress testing they did to a "stock" Ecotec. Keep in mind for a given HP level nitrous and FI put different levels of stress on internal parts.

link to article

 

[Vita]

here is a link to the ecotec handbook

basically, they tell you part numbers for what they used to build up their cars, essentially, you can already have a built up ecotec running huge numbers, it's just whether you have the money or not