The 1.8 pistons won't work, you may increse compression, but with 1.8 pistons you're turning you're 2.0 into a 1.8.
The only OEM Hyundai part that'll improve things is the 1.8 cam in a 2.0. The UK F2 Evo had to be built with current Hyundai parts for Hyundai to warrantee it, and lots of things were tried by MSD (the rally team running Hyundais rally programme and building the F2 and F2 Evos for the road), and the only thing they got was the cams. They have tried everything else, and it either didn't gain anything, or lost power.

 

<div class='quotetop'>QUOTE (BetaRD2 @ Oct 17 2010, 02:01 PM) <{POST_SNAPBACK}></div><div class='quotemain'>i seriusly hope you didnt think the 21.30, 21.45, 21.47 etc in the MAX Torque area is in Ft.Lbs.

please tell me you don't believe that car has 21 FtL.bs, cause that would make my day</div>


hmmm so it has 154 ft/lbs

so, 210whp-154 ft/lbs, reving to probably 10000 rpms.......and people complain about turbo lag

probably 10k bux in engine work....just to run a 13 second quarter

 

<div class='quotetop'>QUOTE (faithofadragon @ Oct 17 2010, 03:45 PM) <{POST_SNAPBACK}></div><div class='quotemain'>hmmm so it has 154 ft/lbs

so, 210whp-154 ft/lbs, reving to probably 10000 rpms.......and people complain about turbo lag

probably 10k bux in engine work....just to run a 13 second quarter</div>


if you see in the video they only rev it to 8,000 RPM


everyone has their journey, and N/A was theirs, people might not like it but its something different and definently cool, it might be 13 second (i really dont know, might be lower) but its 13 second N/A which is verr respectable in my book

 

<div class='quotetop'>QUOTE (eggcatcher @ Oct 17 2010, 02:28 PM) <{POST_SNAPBACK}></div><div class='quotemain'>I don't know about the 1.8 pistons</div>

1.8L pistons on 2.0L rods in a 2.0L block with a 2.0L crankshaft gets you a 2.0L with higher compression. This is very old news. You are not changing displacement (much), you are changing static compression. When you increase compression you get higher efficiency and therefore higher power output.

13 seconds NA on a Beta is a respectable number. It's up to them how they want to spend their money, right?

 

Thank you stocker for clarifying, i too thought it was a known fact. But apparently not.

 

<div class='quotetop'>QUOTE (Stocker @ Oct 18 2010, 04:05 AM) <{POST_SNAPBACK}></div><div class='quotemain'>1.8L pistons on 2.0L rods in a 2.0L block with a 2.0L crankshaft gets you a 2.0L with higher compression. This is very old news. You are not changing displacement (much), you are changing static compression. When you increase compression you get higher efficiency and therefore higher power output.

13 seconds NA on a Beta is a respectable number. It's up to them how they want to spend their money, right?</div>

I have it from a member of Hyundai Korea middle management, part the team behind the F2 Evos, that 1.8 pistons will turn the car into a 1.8.

 

^ WTF is he talking about,


+1 Stocker

+2 iheartmyRrd (just cause i know he is actually rocking the 1.8l pistons, and boosted!)

 

displacement is determined by the bore and stroke, in this case the 1.8 has a lower displacement than the 2.0 because the rods are shorter thus making the stroke shorter thus making it a 1.8, like stocker said if you put 1.8 pistons on a 2.0 you still have a 2.0 but with higher compression, you are not affecting either the bore of the cylinder or the travel of the rod


as for the other thing, i don't know if people think horsepower on N/A comes as easy as it does on a boosted engine, but squeezing over 90hp out of beta allmotor and getting 210 horsepower is for lack of a better word amazing

 

eggcatcher, this really is not open for debate. Iron and aluminum that are 10 years old and have been repeatedly measured by various persons = well known stuff.

The throw of the 1.8L crank is shorter (by 8mm) than the throw of the 2.0L crank. Bore x Stroke = displacement. The bore is the same. With a shorter stroke the displacement is lower - this is very basic math. If you can't get this, you really are too thick to be contributing to a conversation about it. It doesn't matter what somebody at Hyundai says if they also don't know what they are talking about.

The 1.8L pistons are almost exactly the same as the 2.0L pistons, with a very slightly-taller raised area covering most of the crown. This does not take away from the swept volume because the stroke remains 100% the same. Displacement remains 1975cc. It decreases the volume in the combustion chamber, increasing static compression. Use of a thinner (tell the clerk 2003 Elantra) head gasket will net approximately 11:1 compression when you run 1.8 pistons in a 2.0.

 

Apologies for any conflicts, wasn't trying to cause any, the information I had been given when I heard this 1.8 piston rumour was the it was the piston that was a different size, not the piston rod.
Stocker I am a mechanical engineer by trade, I do understand how an engine works, however I can only go on information I am given (and trust me for every good piece of tuning advice/informnation I receive I get a lot of bad ones), and this idea has been dismissed many times in the UK due to wrong information.