Damien

You're missing my point. The Hyundai Online Parts ordering system (nearly identical to the one the dealership uses) says the part #'s 23410-23010 PISTON & PIN ASSY 1.8L, 23410-23210 PISTON & PIN ASSY 2.0L. If the part #s are different then the parts must be different. In some way they are different.

Are they the same just cuz Random says so. rolleyes.gif

Mike Free

If the 1.8L cam is higher lift than the 2.0L cam, are people swapping cams for HP increase?

I certainly hope so, if it works smile.gif Junkyards wuickly become a good source of cheap HP upgrades when stuff like this is found.

It's like when I found a stock 2.2L TBI dodge cam would make a 30 horse increase on a 2.2L TII dodge turbo... Great! since I have BOTH smile.gif

99.9-Percent-Rice

<div class='quotetop'>QUOTE</div><div class='quotemain'>Random:
The 2.0L Sonata is NOT a beta engine. That is probably where the confusion is coming from.</div>Perhaps you missed that Damien?

Random

<div class='quotetop'>QUOTE</div><div class='quotemain'>Mike Free:
If the 1.8L cam is higher lift than the 2.0L cam, are people swapping cams for HP increase?

I certainly hope so, if it works Junkyards wuickly become a good source of cheap HP upgrades when stuff like this is found.</div>Yes, the 1.8L intake cam is better than the 2.0L unit. However, the new XD elantra/2003 Tibby I4 engine (Beta II) has an even better intake cam. Do a search on cams on the engine forum, and you should find the specs on the stock 2.0L intake cam (beta I) the stock 1.8L (beta I) intake cam, and the stock 2.0L (beta II) intake cam.

Allow me to clear up the confustion with this link

If you notice, they have a different stroke, the same bore, and the SAME con rods. Thus they use a different CRANK. When I stated rods and crank, I was refering to the 1.8L beta vs the 2.0L sonata engine. The figures he quotes for 85mm bore and 88mm stroke are the 1997 2.0L SONATA engine wich is NOT a BETA.

1.8L and 2.0L betas have 82mm bores
the 2.0L sonata has 85mm bores.

Thus the confustion...

hopper

Hey man heres a little off topic note but still sligthly ontopic. The part number for the pcv valve for the 2k LC accent 1.5l is different than the 99 year pcv valve. yet they are the same. Also the price is different I ask my dealer who said they were different then found out they were the same. Then I called hyundai customer services they said it was the same and an email to hyundai corp say they are the same. Yet why the different prices and part number.. Thats the key

Damien

HY1836-1.8L Beta
Bore:81.5mm
Stroke:88mm
Rod.Diam:1.7709/1.7717
Main Diam:2.2435/2.2441

HY1997-2.0l Beta
Bore:85mm
Stoke:88mm
Rod.Diam:1.7709/1.7717
Main Diam:2.2435/2.2441

These numbers are for the Elantra and Sonata. Conceded.

23110-23030 CRANKSHAFT 1.8L UP to 7/6/1999
23110-23220 CRANKSHAFT 2.0L up to 7/6/1999

23110-23510 CRANKSHAFT 1.8L from 7/6/1999
23110-23710 CRANKSHAFT 2.0L from 7/6/1999

23410-23010 PISTON & PIN ASSY 1.8L
23410-23210 PISTON & PIN ASSY 2.0L

23510-23000 ROD ASSY-CONNECTING 1.8L
23510-23700 ROD ASSY-CONNECTING 2.0L from 7/6/1999
23510-23200 ROD ASSY-CONNECTING 2.0L up to 7/6/1999

These #'s are for the Tiburon. That's why there are dates by some of the Numbers.

So my question still stands. Why two different part #'s?

The Link I Posted. It's the Official Hyundai Website.

The link fasttiburon posted. The link Random Posted.
Who's sites are these? What's their credibility?

Random

Damien:

Hyundai made a block change on 07/06/1999. As far as I know Gen2 tiburons and 2000 Elantra's got this motor. That is why there are 2 part numbers/different numbers, and why the dates are mentioned.

What change was made, has never been made clear. The online diagrams are the same for both engines, but I think Hyundai was just to lazy to have new ones drawn up.

The link you posted is from Hyundai's parts website. They are know to only be semi-accurate. I have gotten wrong parts using those part numbers. Now I always use www.stcharlesauto.com and let them find the right part # for me.

The link I posted came from "www.hmaservice.com" It is the full factory service manual online. There are manuals/info for most all Hyundai cars/engines available in north america since 1992.

Fasttiburon's link came from
www.paul128.co.kr/paul/engine/hdgas-spec2.html

Mario

Just to share some info, the pistons are different even though they do have the same bore. The reason is that in order to maintain the compression ratios at 10 to 1 you need a different dish volume on the piston to compensate for the additional displacement keeping the same combustion chamber volume (head is the same).

Tip. What higher compression ratio at a low price? change your 2 liter pistons for 1.8 pistons!! Approx 11 to 1.

Damien

Okay... final thought
1.8 + 2.0l Tib ( let's assume both first gen for ease)

Same Connecting rods
Different crank
different pistons but with same bore
different ECU

So with a 2.0l crank and intake cam swap...essentially I have a 2.0l with the 1.8l exhaust cam and a 11:1 CR. Yes or No?

Titanium

thats what i get from all of that

2.0L with 11-1 CR