Well if u are going for fastest HHR on the Site then u are gonna have to be forced production of some sorts.

 

FYI: Hahn does not recommend that you should be doing such on stock internals.

 

I thought it was an Ecotec 'claim to fame' that it could handle sooooo much more that stock output? Don't get me wrong, I know their not putting forged internals in these things, but I thought that was the purpose of that Bonniville racer (that rolled)... to show the masses what this little Ecotec could do!?!?!? Just curiuos why Hahn would be saying such a thing... unless it's a little "C.Y.A." (disclaimer) on their behalf.

 

ok fastes NA on site is that better?

 

Chevy claims the bottom end of the ecotecs to be good for 250 hp or torque I forget. But there are some guys making decent power with a stock bottom end upwards of 250 and into 300. However they may just be darn lucky or have serious supporting mods. Chevy's statement as well as Hahn's could be CYA statements but should be heeded the same.

 

They say this cause...well...imagine if you were them.

You have a 4 cylinder, 2.4 motor that was not meant for boost or the levels you're pushing it but you say "yes, it can handle 350 HP on stock internals". 6 months later, you have people calling you and complaining "my motor blew up!".

It's smart on their behalf. Yeah, they are pushing it now but for how long can it handle it is the real question.

 

As soon as you put too much boost to the stocker, the plastic intake manifold will split anyway. Ask the Cobalt guys - they have already been there.

 

He sure is having fun with the 2.4 in his Solstice! He has his Stage 4 kit on it and almost at 400 horses to the ground on all factory internals. I am waiting for him to perfect that kit to order for my Solstice. Might just have to get with him and get him working on a HHR kit!

 

Where did you hear this?

I've held the plastic manifold in my hand and it's not some flimsey item. It's pretty solid, so claiming that it will crack seems very silly to me, especially cause I know plenty of j-body guys who are running boost on their stock intake manifolds and nothing has happend.

Also remember that GM claims that your plastic manifold can FLOW good up to 300 HP...i'd say you'd need a good amount of boost to reach this mark.

 

If that is correct, then the Solstice kit would work since both the Solstice ans Sky are based off the Same exact 2.4 motor. And the Solstice already has a turbo out for it.