Manual CCT and wow what a difference.

[snakebitten]

This is a dry sump motor.. I don't think the chain is sitting in oil like a standard engine (non dry sump)....

DRZ is dry sump. They have sold THOUSANDS of them, almost unchanged, for 15 years. MCCT's likely outnumber the OEM ACCT's, if I had to guess.

 

[Checkswrecks]

Looks like the stock unit monitors and uses the oil pressure to keep tension on the CCT and then bleeds the oil off onto the chain... Most of the manual CCT look to block off that passage then not feeding the chain some lube except the Graves, (that I can see)... What are the thoughts of others on the importance of this ? You can see in these pictures the small passage the Graves offers to keep some oil spilling over onto the chain...

The engine designers at Yamaha determined the lube requirements for the chain in terms of flow and where it would be required. Clearly, they intended for some amount of lube to come from the tensioner, implying that if a replacement CCT did not have the oil jet then the chain gets less oil than the design called for. Set aside the DRZ or anything else, this is less oil than THIS engine's cam chain was supposed to get. It also means that the pump supply can accommodate the flow to the spray from the tensioner.

Cam chains don't get a lot of load, but they are thin and turns around the top pulleys are fairly sharp, which induces friction at each joint. The oil also is not just a lubricant, it's a prime mechanism for removing heat from the chain and other engine parts.

So you have the supply, the chain needs both lube and cooling, I see absolutely no bad side to using the CCT with the lube jet. While I am not saying that the sky is falling and the bike will explode with a plugged port, until shown otherwise in THIS engine, there is only potential negative in running less oil getting to the cam chain.

 

[Checkswrecks]

btw -
Before we get the "Chicken Littles" running around, I'll be the first to acknowledge that replacing tensioners and cam chains is a pain in the butt and an expense not originally foreseen. However, it also gives LOTS of warning and should be seen as a wear item like the drive chain and sprockets in a chain-driven bike. This is not something which will grenade without warning on an owner, in the manner of a transmission locking up or a rear drive failing.

 

[~TABASCO~]

The engine designers at Yamaha determined the lube requirements for the chain in terms of flow and where it would be required. Clearly, they intended for some amount of lube to come from the tensioner, implying that if a replacement CCT did not have the oil jet then the chain gets less oil than the design called for. Set aside the DRZ or anything else, this is less oil than THIS engine's cam chain was supposed to get. It also means that the pump supply can accommodate the flow to the spray from the tensioner.

Cam chains don't get a lot of load, but they are thin and turns around the top pulleys are fairly sharp, which induces friction at each joint. The oil also is not just a lubricant, it's a prime mechanism for removing heat from the chain and other engine parts.

So you have the supply, the chain needs both lube and cooling, I see absolutely no bad side to using the CCT with the lube jet. While I am not saying that the sky is falling and the bike will explode with a plugged port, until shown otherwise in THIS engine, there is only potential negative in running less oil getting to the cam chain.

That was my thought process.......

 

[snakebitten]

The engine designers at Yamaha determined the lube requirements for the chain in terms of flow and where it would be required. Clearly, they intended for some amount of lube to come from the tensioner, implying that if a replacement CCT did not have the oil jet then the chain gets less oil than the design called for. Set aside the DRZ or anything else, this is less oil than THIS engine's cam chain was supposed to get. It also means that the pump supply can accommodate the flow to the spray from the tensioner.

Cam chains don't get a lot of load, but they are thin and turns around the top pulleys are fairly sharp, which induces friction at each joint. The oil also is not just a lubricant, it's a prime mechanism for removing heat from the chain and other engine parts.

So you have the supply, the chain needs both lube and cooling, I see absolutely no bad side to using the CCT with the lube jet. While I am not saying that the sky is falling and the bike will explode with a plugged port, until shown otherwise in THIS engine, there is only potential negative in running less oil getting to the cam chain.

Hard to argue with what appears to be very sound reasoning. I respect that. Really, I do.
It's simply a risk assessment for me. And probably a bit of hurt feelings when YES denied my claim.
Gotta admit my faith in YES was injured to a point where why would I have faith they would repair my high mileage blown engine, if they wouldn't repair my faulty acct?

Took matter into my own hands. Something I have done many times in my life. Never really been a crybaby. Not starting now. lol

 

[snakebitten]

By the way, I don't know if the fact that the R1 MCCT is the one being used by the Tenere, also would mean that the Graves R1 MCCT would work exactly the same in the Tenere as they intended it to in the R1.

If so, that would alleviate the "oiling the chain" concerns?

Interesting.

 

[offcamber]

Just playing devils advocate...I'm not a engineer but I did stay at Holiday Inn Express.........well never.....

BUT....maybe the oil groove is there to relieve excess oil pressure that the automatic tensioner doesn't need....like a regulator...to keep it from exerting too much pressure :question:

Just a thought......

 

[Mark R.]

So, Tabasco........which unit would you put in your bike, and where would I get it? I debated the MCCT vs ACCT when I upgraded to the 14 unit because of my experience with my DRz 400. The MCCT just makes sense because you get the tension just right, and you leave it until you hear something, then just tighten it a teensy bit until it is silent again. It actually takes a lot of stress off the cam chain because there is not a constant pressure to keep tightening the chain like the ACCT.

Thanks.

Mark R.
Albuquerque

 

[~TABASCO~]

So, Tabasco........which unit would you put in your bike, and where would I get it? I debated the MCCT vs ACCT when I upgraded to the 14 unit because of my experience with my DRz 400. The MCCT just makes sense because you get the tension just right, and you leave it until you hear something, then just tighten it a teensy bit until it is silent again. It actually takes a lot of stress off the cam chain because there is not a constant pressure to keep tightening the chain like the ACCT.

Thanks.

Mark R.
Albuquerque

If its fits im going to do the Graves unit.... I just haven't had time to confirm it.. If you go back to the start of Tomato's post I think Greg posted about the Ebay units, Etc..... They cross reference the Tenere CCT with the R1 unit.... If this will slide in this is the one for me..... I would just have to shop around... Graves makes some great parts.....


I'm sitting here at my desk looking at the Graves, and I have a real Yamaha unit in my hand.... It looks the same to me....

 

[Texasten]

Wonder how much cost is involved in having a turnkey mcct replacement???
My 2014 top end noise is all over the place depending on throttle/rpm.
At around 3k rpm, if I adjust throttle from neutral to slight power to power off, I can hear the top end noise change drastically.
Maybe I am just hearing the firing of the cylinders?????
The mcct replacement sounds like a very desirable mod......

 

[Ramseybella]

Have had the Ebay unit for more than 2500 miles no issue.
It will kiss your Y.E.S. warranty goodby if anything happens to your cam chain or anything associated with it according to Jason the owner at Stadium Yamaha whom I am not happy with at this time for not helping me with defective 2014 CCT I bought from them, just fell off the radar on me.

 

[Koinz]

Wonder how much cost is involved in having a turnkey mcct replacement???
My 2014 top end noise is all over the place depending on throttle/rpm.
At around 3k rpm, if I adjust throttle from neutral to slight power to power off, I can hear the top end noise change drastically.
Maybe I am just hearing the firing of the cylinders?????
The mcct replacement sounds like a very desirable mod......

Remember that our bikes also have an automatic de-compression hanging off the exhaust cam. Those things are noisy as hell. It's probably where most of the noise is coming from.

 

[OldRider]

Have had the Ebay unit for more than 2500 miles no issue.
It will kiss your Y.E.S. warranty goodby if anything happens to your cam chain or anything associated with it according to Jason the owner at Stadium Yamaha whom I am not happy with at this time for not helping me with defective 2014 CCT I bought from them, just fell off the radar on me.

My orginal CCT is wound up and ready to stick back in if ever needed. >

 

[snakebitten]

Have had the Ebay unit for more than 2500 miles no issue.
It will kiss your Y.E.S. warranty goodby if anything happens to your cam chain or anything associated with it according to Jason the owner at Stadium Yamaha whom I am not happy with at this time for not helping me with defective 2014 CCT I bought from them, just fell off the radar on me.

Sorry to hear that. And I know how you feel. :-[

Again, as I have stated, I am not disenchanted with my Bike, Yamaha as a manufacturer, my dealership, or anything else EXCEPT the YES program being less than what I expected.
And when I say "YES program", I'm sure I am really just talking about a single person somewhere working in some office that basically told me that HE would determine what my YES coverage means.
And he told me it doesn't mean what I thought it meant.

Perhaps if something severe went wrong with my Tenere, that same person would change his mind and decide I am a valuable customer. Perhaps he wouldn't. I don't know.
But I do know that I am just not going let HIM get me all fired up and emotional about it. (There was a time, that I would have LIT THINGS UP, under the same exact circumstance)
Instead, I will take matters into my own hands and take good care of my bike. And for me, the thing to do is to put the mcct into it. My choice. Just makes me feel better about the whole thing.

The "would ifs" aren't going to torture me either. LOL
I'm gonna keep believing in this bike as being as wonderful as I have always thought it to be. There is so much evidence to back that up.

 

[Ramseybella]

Sorry to hear that. And I know how you feel. :-[

Again, as I have stated, I am not disenchanted with my Bike, Yamaha as a manufacturer, my dealership, or anything else EXCEPT the YES program being less than what I expected.
And when I say "YES program", I'm sure I am really just talking about a single person somewhere working in some office that basically told me that HE would determine what my YES coverage means.
And he told me it doesn't mean what I thought it meant.

Perhaps if something severe went wrong with my Tenere, that same person would change his mind and decide I am a valuable customer. Perhaps he wouldn't. I don't know.
But I do know that I am just not going let HIM get me all fired up and emotional about it. (There was a time, that I would have LIT THINGS UP, under the same exact circumstance)
Instead, I will take matters into my own hands and take good care of my bike. And for me, the thing to do is to put the mcct into it. My choice. Just makes me feel better about the whole thing.

The "would ifs" aren't going to torture me either. LOL
I'm gonna keep believing in this bike as being as wonderful as I have always thought it to be. There is so much evidence to back that up.

Roger that!!

I stopped chasing noises on motorcycles years ago, but some just stand out when you start hearing them.
CCT is the main one, the rest are just the sewing machine noises most bikes make.
I am not going to worry about this bike just maintain it and ride.
Did almost 700 miles this past weekend in Alamogordo, NM ran it all over some of them nice twisted smooth roads around Cloudcroft south.
Was a great low 70's at Oliver Lee state park, Mice are coming out at night due to the warm weather but no hassles with them, keep things zipped up and food out of the tent.

 

[~TABASCO~]

Did anyone end up ordering the Graves motorsport unit? Did it end up working, where did you buy from ? Thanks

 

[Purificator81]

I checked graves website for the MCCT, which one guys did you order? The R1 one??

 

[~TABASCO~]

Hey guys, here's an update. I got the GRAVES and everything is in spec. There should be no issue using this in our Tenere. I've MIC'ed it all out and its the same as ours. Ill be installing it soon..

In the pictures you can see I've taken a real (used) Tenere gasket and fit it onto the GRAVES; everything is good. I have no issues sticking in my Tenere. This looks to be another alternative MCCT to be used. If you have any questions let me know...

 

[Mark R.]

Jaxon. Does the Graves unit come with a gasket?

 

[~TABASCO~]

No..... I picked up 6 or so from yamaha.