N/A tunning 2.0L

Repteel · Post by **Repteel** » Sun Feb 25, 2007 11:57 pm

got a 2004 Chevy Optra5 with a 2.0L, I want to build up the engine abit next year, I was reading that the c20xe was suppose to have 170bhp, pistons will fit and bump up the compresson, is there anything else that will fit from that motor?? oh and here's the link that got me thinking http://www.sbdev.co.uk/History_files/Hi ... epower.htm

mocpac · Post by **mocpac** » Mon Feb 26, 2007 2:46 am

luck with your project. the XE have hi comp pistons and came with header... I'm selling a set of pistons and rod from the c20xe if you are interested they are 10.5:1 your are 9.5:1

Repteel · Post by **Repteel** » Mon Feb 26, 2007 11:27 pm

yeah I saw them, I'll have to wait until after I move this summer before I buy too much, where would you get piston rings for them?

Post by **PrecisionBoost** » Tue Feb 27, 2007 12:19 am

I suggest you use the search bar and in the advanced search options use my name ( Chris@precisionboost ) as the author.

Then do keyword searches for Underdrive pulley, mandrel exhaust, intake, dyno as I've managed to add a few ponies under the hood from very simple cheap upgrades.

The Opel X20XEV is the cousin of our motor..... they make lots of upgrades....cams, pisons, valvetrain component, intakes, headers, turbo systems and much more.

Increaseing the compression will net you a few horsepower..... also consider the fact that a 2.2L crank will fit into your block.

To be honest.... that's quite an expensive job... as custom parts will be required.

If your looking for some extra power to make your car feel fun.... do what I did and install a cold air intake, performance exhaust/mufler and an underdrive pulley.

I found a noticeable difference between stock and these upgrades.... and all can be done under $500 if you take your time and research the right products.

gse_turbo · Post by **gse_turbo** » Tue Feb 27, 2007 4:08 am

you can also buy pistons from Wiseco, a set of flat top's will put you at 11.5:1 and set you back around $525 shipped for a set coated with rings and floating pins.
QED offers goods also http://www.daewootech.com/forum/viewtopic.php?t=8492

garrett

Repteel · Post by **Repteel** » Fri Mar 02, 2007 11:24 pm

@ Chris, I was under the impression that the xe pistons were drop in parts and wouldn't need to be modded. I didn't see anything about putting in the 2.2L crank into the 2.0L, is it more durable or does it increase the stroke of the piston?

Post by **PrecisionBoost** » Sat Mar 03, 2007 7:14 am

If you were to go with XE pistons.... make sure you get the rods as well to ensure that there are no issues with fitting the piston pin.

Putting the 2.2L crank into the 2.0L block could be done... it will increase stroke.... but a custom set of rods would need to be purchased since half of the added stroke needs to be removed from the length of the connecting rod.

Let's just say that it's an expensive upgrade and leave it at that.

Unless you have several thousand dollars to throw into the engine.... I wouldn't even consider it as an option.

Post by **PrecisionBoost** » Sat Mar 03, 2007 7:15 am

Oh.......... technically....... there is another crank that increases the stroke even further..... I think it was something like 101mm

This can be found inside the C24SE.... which is found in the Isuzu DMAX pickup truck in places like Brazil and Singapore.

Repteel · Post by **Repteel** » Sat Mar 03, 2007 10:18 pm

Thanx Chris, yeah that sounds like alittle more than what I wanted to get into. I was orginally thinking of: the underdrive pully, lighter flywheel, higher compression pistons, sport cams with new valvetrain parts if needed, msd, better flowing intake manifold, header or having the stock iron cast one opened up some, lightened crank shaft and p&p the head while it's apart. Fuel I'm not sure about, depending on which parts I get I was hopping just to get a diffrent fuel regulator (and high test). I aimming for 150-175 whp

, hopefully that would be enough to keep up with a colbalt ss non-s/c and make it fun for lap days.

kinkyllama · Post by **kinkyllama** » Sun Mar 04, 2007 7:35 pm

Repteel wrote: I aimming for 150-175 whp , hopefully that would be enough to keep up with a colbalt ss non-s/c and make it fun for lap days.

Theres a SS that isnt s/c?

With 175whp you should be keeping up with the SS s/c. I've whooped on an SS s/c with some money put into it...of course the driver was an idiot but still...they're fast and I'm making allot less than 150whp

Repteel · Post by **Repteel** » Sun Mar 04, 2007 11:05 pm

yup there is 2 ss, ss sc 2.0L, 205 hp and ss non sc has a 2.4L which is only 171hp but should produce way more tourque because the bigger displacement, has vvt, and it being n/a

kinkyllama · Post by **kinkyllama** » Mon Mar 05, 2007 7:16 am

Repteel wrote:yup there is 2 ss, ss sc 2.0L, 205 hp and ss non sc has a 2.4L which is only 171hp but should produce way more tourque because the bigger displacement, has vvt, and it being n/a

Hmm...I wounder if its the non s/c version I raced then....that'd make allot more sense.

Anyways you stand a chance against it even with the cheaper/easyier to come by upgrades. I'm postitve I'm losing allot of torque cuz I built my exhaust with plans of a turbo but took way to long to get the turbo on and changed my turbos exhaust plans anymore...anyways still my forenzas making 133tq at the wheels and 122whp. I'm sure I could get around 135whp with a tune of my SMT-6 and MSD dis-2 from looking at the afr and whatnot.

Check my post in the members section for a mod list.

Also I assume your on suzuki-forums.com but if not I suggest you go there...not as good technical info but much more to do with our car.

Repteel · Post by **Repteel** » Tue Mar 06, 2007 1:53 am

from the outside the non sc has the ls wing, 17 inch tires, missing the supercharged badge on the trunk, and missing the front and rear lips

yup kinkyllama I've be lurking here and at suzuki-forums since I got my car, I've seen you black beasty and it looks nice

kinkyllama · Post by **kinkyllama** » Tue Mar 06, 2007 7:16 am

Repteel wrote:from the outside the non sc has the ls wing, 17 inch tires, missing the supercharged badge on the trunk, and missing the front and rear lips

yup kinkyllama I've be lurking here and at suzuki-forums since I got my car, I've seen you black beasty and it looks nice

Thanks! I'm anxious to see your build...you and only one other person has expressed a decent amount of intrest in doing a good n/a build. If I was sticking to my orignal goal of 200whp I'd probably sell my turbo stuff and shoot for it staying n/a....much mroe impressive than slapping on a turbo.

logikal · Post by **logikal** » Tue Mar 06, 2007 4:56 pm

Another thing I would suggest is good engine management. Kiny runs an SMT-6 which is a little hard to come by but is absolutely wonderful for our little cars. I personnally run an AEM standalone which is a great help for when the car is dynoed. Kinky I agree with you that slapping on a turbo isnt as much fun as building a strong N/A car.