2.2L Engine Rebuild for Withstanding Higher Level Forced Induction - Page 2 - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #11 of 72 (permalink) Old 03-17-2014, 11:43 AM
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Quote:
Originally Posted by Blackbalts View Post
that depends on your experience and confidence in your mechanical skills. You "can" do all of this yourself in a parking lot if you feel like it. Obviously you would need an engine picker.
Agreed cuz I did that haha.

I had never put together an engine before this, let alone even take one out of the car or pull it apart. Its honestly not hard but you have to be confident in what youre doing or it can spiral downhill real quick and be a lot of money lost.

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post #12 of 72 (permalink) Old 03-17-2014, 11:47 AM
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I'm confident in what I do know about wrenching on a car, this is going to be my first engine build tho. And my main question behind what I can do myself is what is it that I need a certain machines took or some sort of press to work on it? The only thing I know I'm taking to someone to do for me is bore it so I can change the compression to 8:9:1 with the wiseco piston kit that I found that are 64.5 mm


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post #13 of 72 (permalink) Old 03-17-2014, 07:14 PM
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64.5mm pistons... um no. Stock bore is 86mm. Keep stock bore, lower compression to 8.9:1 if youd like but you will definitely need a tune before you start driving it. Youre gonna lose low end power. You can do everything yourself other than examining and professionally cleaning the block. Just make sure you have tools and an engine stand

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post #14 of 72 (permalink) Old 03-17-2014, 07:22 PM
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Sorry I meant to put 86.5 that's my bad haha
Are there any tools that people might not normally have to so it?
I was told from some friends that it would be better to change it to the 8:9:1 compression if I'm already going to take the engine apart for a rebuild so what's the pros/cons of keeping the stock compression and changing jt?


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post #15 of 72 (permalink) Old 03-17-2014, 07:24 PM
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You'd get more out of stroking the motor (namely torque) then you would by boring it.

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post #16 of 72 (permalink) Old 03-17-2014, 07:26 PM
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And to give you a quick background of what I'm looking for when I'm done with my car is acceleration. Mainly from 0-100 not entirely on top end speed and/or acceleration ifthat helps with your answer
And thanks for any help and advice that you give


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---------- Post added at 05:26 PM ---------- Previous post was at 05:25 PM ----------

What's the difference between stroking the motor and boring it?
Sorry I'm kinda learning about all this as I go on with it


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post #17 of 72 (permalink) Old 03-17-2014, 07:30 PM
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If you want acceleration, you want torque. Stroke the motor, add displacement, get the torque. Banker and Levee would be able to explain that in better detail.

---------- Post added at 09:30 PM ---------- Previous post was at 09:28 PM ----------

Stroking is increasing the throw of each piston. Piston will travel further in the cylinder, thus creating displacement. More displacement, more air and fuel, more power. Boring the cylinders I was told will net you next to no power gain at all.

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post #18 of 72 (permalink) Old 03-17-2014, 07:34 PM
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would that make the engine less reliable or easier to blow if i stroked the motor?
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post #19 of 72 (permalink) Old 03-17-2014, 07:36 PM
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This sounds fun.

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post #20 of 72 (permalink) Old 03-17-2014, 07:42 PM
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for what i've heard from you guys i'm pretty sure that i'm just going to keep the stock compression i just would like to know more about all my options before i start to buy anything
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