Tau 4.6 Question

[okc329]

Does anybody know if the 4.6 uses a chain and if so is it single or double for driving its camshafts? Can anybody point me to a good internal diagram of this engine?

Thanks

 

[SterlingDave]

Does anybody know if the 4.6 uses a chain and if so is it single or double for driving its camshafts? Can anybody point me to a good internal diagram of this engine?

Looks like this thread in the forum

http://genesisowners.com/hyundai-genesis-forum/showthread.php?t=2578

will get you started, since its topic is timing chain tensioner. I don't know if you'll get all your answers, but it is the right place to ask, IMHO.

Good luck.

 

[ctrcbob]

Yes, it uses a Timing Chain, vice a timing belt.

Don't know if it is single or double row, but PROBABLY double row roller chain.

I would much rather that it was the type of chain that used to be called "Hy-Vo" chain (I can't remember what they call hy-vo chain these days) as they don't stretch or break.

 

[okc329]

Thanks for the suggestion but I don't see a 4.6 internal diagram. Can anyone else help?

 

[Jasem]

I hope this pic will answer your questions "Click on the pic":

 

[Mark_888]

I hope this pic will answer your questions "Click on the pic"

What is it in the pic that you see that answers the question? I see some belts, but can't tell if that is the timing belt or a belt to drive accesories, etc. I also see what I think is an alternator, but looks sort of like a chain in that small pic, but not sure what it is.

 

[MattG]

What is it in the pic that you see that answers the question? I see some belts, but can't tell if that is the timing belt or a belt to drive accesories, etc. I also see what I think is an alternator, but looks sort of like a chain in that small pic, but not sure what it is.

You have to zoom in on the image, the full size version pretty clearly shows the timing chain, as well as the belt driven alternator that you mentioned.

It isn't a diagram, and might or might not provide what the OP was looking for, but since the OP did not indicate why they wanted to know about the timing chain/diagram. . .

 

[Mark_888]

You have to zoom in on the image, the full size version pretty clearly shows the timing chain, as well as the belt driven alternator that you mentioned.

It isn't a diagram, and might or might not provide what the OP was looking for, but since the OP did not indicate why they wanted to know about the timing chain/diagram. . .

OK, I see it now. Couldn't find the zoom before.

I was fairly sure that both engines have a chain because I don't recall seeing any timing belt replacement in the maintenance schedule, which usually occurs about 60-90K miles depending on manufacturer.

 

[MattG]

OK, I see it now. Couldn't find the zoom before.

I was fairly sure that both engines have a chain because I don't recall seeing any timing belt replacement in the maintenance schedule, which usually occurs about 60-90K miles depending on manufacturer.

Exactly. When I hear young people talking about deferred maintenance I often cringe when I think about timing belts snapping.

 

[okc329]

Thank you. I can see the chain drive for at least one cam.

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[Mark_888]

Exactly. When I hear young people talking about deferred maintenance I often cringe when I think about timing belts snapping.

It does depend on what engine you have. I had a 1998 Camry V6 with a non-interference engine and a timing belt. If the belt had broken, no damage to the engine would have occurred, other than being stranded somewhere.

With an interference engine, if the timing chain breaks (most interference engines have a chain these days), then the major damage can occur because the valves will hit the pistons when the timing is off.

Chains usually start making a noise before they break (assuming one is listening carefully), and of course they last a lot longer than belts (usually).

 

[ctrcbob]

In looking at the photo, I see that the timing chain is the "Hy-Vo" (or whatever they call it now). These chains don't break, and even better than the roller chains.

 

[ImInPA]

Yes, it uses a Timing Chain, vice a timing belt.

Don't know if it is single or double row, but PROBABLY double row roller chain.

I would much rather that it was the type of chain that used to be called "Hy-Vo" chain (I can't remember what they call hy-vo chain these days) as they don't stretch or break.

HY-VO® Chain is a unique type of Silent Chain. HY-VO stands for High Capacity, High Velocity, and Involute Tooth, and it is a registered trademark of Borg-Warner Automotive, Inc.

In Silent Chain, the pin and the plate rotate against each other. In HY-VO Chains, the pin is comprised of two pieces that have rotational contact. Due to the rotational contact of the pins, the wear life of the chain is increased. Also in HY-VO Chains, the contact point between the pins moves up when the chain engages the sprocket (Figure 1.31). This construction decreases chordal action .

 

[ctrcbob]

ImInPA,

You gave me an education on that Silent Chain and Hy-Vo Chain. From the pictures, can you tell if it is Silent or Hy-Vo Chain? I know its not Roller Chain.

 

[ImInPA]

Bob, I cannot tell from the picture. I am pretty sure it is some sort of "Silent Chain" though. The move to belts was to keep the noise down. Todays technologies are superior to even Borg-Warner's Hy-Vo silent chain. You will likely be out of your car a long while before that chain wears out.

 

[TJPark01]

Does anybody know if the 4.6 uses a chain and if so is it single or double for driving its camshafts? Can anybody point me to a good internal diagram of this engine?

Thanks

Try playing around with this website, it may help you find what you're looking for. Or confuse you further...
ReyReece Hyundai

 

[okc329]

Thanks for the link. Definitely a chain in there. It seems like the parts are reasonably priced compared to other high-end cars.

 

[mcginnpm]

Attached is a top level diagram of timing system parts from www.hmaservice.com.

Once your in the site (registration required), click "SHOP" on the top menu, then down-select to "GENESIS(BH)" "2009" and "G 4.6 DOHC". Expand the "G 4.6 DOHC" line in the lower window, then click "Engine Mechanical System", "Timing System", "Timing Chain".

There you'll find a link for "Components and Component Location" (which is what I attached) and "Repair Procedures" (21 steps to remove and 26 steps to install the timing system w/graphics and notes).

If you don't see any diagrams, go back and click the "Site Requirements" at the top of the page. Ensure you have all the listed apps installed (I needed the Adobe SVG Viewer before I could see the diagrams).