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Discussion Starter #1
Can someone clarify what I have heard about putting the 1.8L cams from an Elantra to a Tiburon? I asked my service guy at Hyundai, and he asked me if I had a part number. He basically said he could do it, and they would never be able to tell unless I need to put those huge cam gears on it. But since its not after market, I probably wouldn't. Do the 1.8L cams have a highter lift? What's the deal? What is the part number for them?

Mateus


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The 1.8L cams provide a little bit more lift and duration. I don't have the specs or the part number right now, but I'll see if I can find them.


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Discussion Starter #3
That would help, because we don't really know if they provide more lift, unless I find out at least what model these cams everyone are talking about. If I know exactly what model car...then I can pass the info to my service rep, and he will tell me.

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Mateus


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1.8L intake cam: 1996-1998 Elantras and Tiburons

It opens 3 degrees earlier, closes 5 degrees later, and has 0.4mm more lift than the comparable 2.0L intake cam. Probably makes another 3-5 flywheel horsepower if combined with other simple intake modifications (throttlebody, cold air intake). It is visibly impossible to tell the difference, your mechanic would have to break out a micrometer and measure the lobes to know it was a different part than your stock 2.0L cam.

2.0L intake cam: 2001.5 and later Elantras (Elantra GT is what you should ask for)

Opens 7 degrees earlier than stock, and closes 9 degrees later than stock, along with 0.8mm more lift. The car doesn't like to idle "nicely" with this cam as the cam overlap is a bit more substantial. It probably makes 5-9 flywheel horsepower if combined with the FULL compliment of bolt-on intake modifications (bored intake manifold, bored throttle body, cold air intake). The problem is, because of the lift and duration, it makes that power further up the power band. It too is indistinguishable from the stock cam visibly, but the idle will tell them that <i>something</i> is up.

Part numbers are available from St. Charles Hyundai... Cheapest dealership in the world to buy OEM Hyundai Parts: (800) 727-8066.

-Red-
 

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Discussion Starter #5
Are you an expert? I am just asking because I don't want to go on hearsay. I will check it out on the technical line...thanks man!!! Big help

Mateus
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Yes, Red is technowheenie <img src=/images/forums/snitz/smile.gif width=15 height=15 border=0>.

Seriously though, Red has experimented with both cams and is talking from a personal as well as technical experience.


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<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Yes, Red is technowheenie <img src=/images/forums/snitz/smile.gif width=15 height=15 border=0>.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

It's just a little harder to tell without mod status like on FXtreme<img src=/images/forums/snitz/wink.gif width=15 height=15 border=0>


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Actually, I'm going to drop out of the Moderator game and start working harder on http://www.hyundaiproject.com

I've got about 8 metric tons of stuff that I would LOVE to put up for you guys... But it needs time and a lot of work, so perhaps I'll just be a "lurker" for now <img src=/images/forums/snitz/thumbup.gif width=25 height=18 border=0>

For the moment, I'm still waiting for the servers to move. I cannot make any changes until my ISP gets their butts in gear and moves my stuff... It's been almost a week! Grrr... Oh well.

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from st charles i think it's like $100USD.....


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Discussion Starter #11
hey, Mysilvertib...what springs and size wheels do you have?

Mateus


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Red what cams are you running with now? And what cams would you recommend? And I see visually that you can't tell the difference of each cam, but will you feel a difference once installed?


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There are aftermarket cams available that will give you more bang for your buck. Cat Cams makes some and so do HVE...

They both give you about 10% more hp and include both intake and exhaust cams. They retail for about $1100 canadian. I would buy the HVE ones if I had the money right now...<img src=/images/forums/snitz/thumbup.gif width=25 height=18 border=0>


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Right now I'm running the stock 2.0L exhaust and the G4GD (newest 2001.5 Elantra GT engine) 2.0L intake -- these are (so far) the "best" of the stock cams for the BETA motors. Visibly they are no different, but a full millimeter of cam lift and 8-10 more degrees of duration is certainly enough to make a difference.

The cams I will be using in the project motor are radically different; they are prototype units that are not available for sale at this time BUT may become available after a bit of dyno testing on my part. They will likely retail for around $1000 USD to start with, but that price is for the "full race" model which has hollow cores and fully adjustable sprockets on both cams. It's likely the "normal" units with the same lobes (but not hollow and not adjustable) will be cheaper...

The prototypes are specifically for turbocharger application, they would work very poorly on an N/A car.

-Red-
 

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OOps, as for recommendations:

The G4GF (2.0L from 1997-2000 Elantras and Tiburons) exhaust cam and the G4GD (2001.5 Elantra GT) intake cam would be MY very first suggestion. If you do the upgrade yourself, the shop will never EVER know you changed them out. They have HMC stamps on them, they are stock parts and they're guaranteed to work. They're also cheap: St. Charles Hyundai in Missouri sells them online for around $240 for BOTH. This is cheap.

My second recommendation would be JRP in Canada. They have several grinds of "Cat Cams" (the manufacturer) that work well in N/A vehichles. I suggest these folks because they are on the North American continent and so getting parts is cheaper and easier. Cost is probably between $350 and $550 USD depending on what you order.

Finally, HVE and RPW make some great cams, but you have to deal with international customs, international shipping, international money and blah blah etc. It's all quality equipment, it's just a PITA to get here.

That's my additional $0.02,
-Red-
 

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Wow thanks Red that definitely helps out a lot. But your answers posse more questions for me. Now I know the Beta 2.0L in the 2001 Tiburon is a DOHC but I don't no much about cams. You mentioned an exhaust cam and an intake cam and from that I gather that they perform two separate tasks. I never really looking into cams before always figured that they both did the same thing, what that thing is exactly I don't know. Could you fill me in on what these cams do so <b>next time</b> I discuss cams with somebody I don't come across looking like an idiot and so I can get a better understanding on what is happening under the hood.


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Good Job Red..Thanks for the recommendations!<img src=/images/forums/snitz/thumbup.gif width=25 height=18 border=0>


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Here's a pic of Brendan's engine when I installed his 1.8 cam.

The pic shows the top of the engine with the cover removed.

<img src="http://www.fxtreme.org/members/Cottonmouth/1.8caminstall1.jpg" border=0>
The top cam is the intake cam.
The bottom one is the exhaust.

Now I'm not sure how much you know about cams but here we go in simple terms...

The cams turn together with the little lobes rotating and pushing the valves up and down, opening and closing inside the cylinder. The cams are positioned so that the valves open at the correct time for the engine to operate properly. You don't want the valve to be open when the cylinder reaches the top of the stroke (top dead center), cause this will damage your engine badly. This is why you must be very carefull when installing a cam.<img src=/images/forums/snitz/wink.gif width=15 height=15 border=0>



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Discussion Starter #19
This is more information than I ever dreamed of...THANKS A LOT!!!

Mateus


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Red, Cottonmouth thank you both for this info it has been very enlightening.<img src=/images/forums/snitz/thumbup.gif width=25 height=18 border=0>


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