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ACCT I think I caught it in time!

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Hello All,

I know this subject has been beaten to death but just wanted to share my experience. Today I installed the MCCT to my 2008 drz 400s. I bought the bike a month ago with 300 miles and put about 300 on the bike since. My first question is can the ACCT stretch the cam chain from just sitting? The bike is almost 2 years old but only has 300 miles? Just to be on the safe side I ordered the MCCT from TT and installed it tonight. Install went easy and I was able to check the valve specs at the same time! The front right exhaust valve was right at .20 and is what im assuming is making the ticking when warm...are valves supposed to be checked warm or cold? Like many I have had a difficult time deciphering from the cam chain noise and valvetrain when adjusting and MCCT...I ended up just going snug with the fingers. Below are pics of my ACCT, you can see where the lock was rubbing and the it had already moved about 3 notches on a total of 600 miles for the bike. It probably would have been maxed out at 1500. My third question is if there is a way to measure the chain links to account for stretching or wear?

Thanks guys!

<a href="http://s250.photobucket.com/albums/gg264/gtlegacy/?action=view&current=IMG_2801.jpg" target="_blank"><img src="http://i250.photobucket.com/albums/gg264/gtlegacy/IMG_2801.jpg" border="0" alt="Photobucket"></a>

IMG_2801.jpg

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Chain should be fine with that mileage from the ACCT.

Check valves cold. Wait overnight.

Take a pic of your MCCT to see how far it's adjusted in if you're worried.

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Below is the a picture of my TT MCCT adjustment. Im going to make an assumption here based on my limited knowledge of this engine (im new to the drz) The cam chain stretching is significantly from the ACCT pressure NOT the engines HP which means that as long as I do not keep tightening my MCCT I should be fine. If I have slightly overtightened the MCCT then the chain should give slightly leaving the chain in perfect adjustment (as long as myself or another mechanic does not tighten) How much do the chains stretch from miles or high hp with the MCCT?

Thanks!

IMG_2805.jpg

<a href="http://s250.photobucket.com/albums/gg264/gtlegacy/?action=view&current=IMG_2805.jpg" target="_blank"><img src="http://i250.photobucket.com/albums/gg264/gtlegacy/IMG_2805.jpg" border="0" alt="Photobucket"></a>

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Thanks, i know they say that all engines are different, but it looks like im in the ballpark. I guess im just not used to the noises that this engine makes. Ive always ridden an 03 yz250r which does not make much noise other than out of the tail.

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I just bought a used DRZ as well. When the previous owner started it up for me (with an opened up Yoshi exhaust) he must have seen a strange look on my face since the first thing he said to me was, "that's how these DRZ engines sound". I took his word for it. Took it for a coupel of rides, and it runs strong, but my other bike, a bmwf650 sounds like a 1970's sewing machine with the stock exhaust.. so I'm not too concerned with the sound at the engine unless something seems terribly wrong...

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They're noisy. You get used to it. Yours looks normal. Try to forget about it now.

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Avoid the temptation to overtighen the MCCT, back it off until you hear the rattle, you can usually feel it too if you are doing it by hand (mind that exhaust!) then tighten until the noise just goes, lock the nut and off you go.

Dan

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Looks about the same as mine, 2003, 5500 miles.

0313102208b.jpg

Hey guys, i just installed my MCCT yesterday.

I can post a pic up but when i got mine adjusted to where i think is correct, there are 7 threads visible on the bolt, whereas 8 are shown on this pic.

Tough to exactly nail the rattle sound going away, but me and a buddy concurred. I tried to find more pics but to no avail.

Could I have overtightened it a whole turn?

Bike sounds better (i guess) and runs great. did nearly 100 or so miles since the mcct install yesterday.

Specs:

2006 DRZ400SM

6250 miles (most miles in the last 6 months, kinda hard street riding)

MRD/SSW full system

3x3

JD Jet Kit

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There is no visual adjustment method that has been shown to be valid one bike to another.. .. You can do it as recommended and trust in the procedure, or make one up that may or may not work....it's an individual choice..

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Thanks, i know they say that all engines are different, but it looks like im in the ballpark. I guess im just not used to the noises that this engine makes. Ive always ridden an 03 yz250r which does not make much noise other than out of the tail.

4 strokes have a bunch more parts moving about at high velocity in the engine compared to a 2 stroke so you're going to hear more going on inside your DRZ. This can be especially alarming to a life-long 2 stroke guy!:thumbsup:

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I just installed a MCCT on my '09 with only 50 km on it. I installed it by taking the valve cover off and checking the tension of the cam chain with the ACCT installed (as per the instructions).

I was surprised how tight that chain is from the factory. When I pulled down the chain between the two cams, I was only able to get a small amount of play by pulling down with enough force to almost bend my fingernail. I went ahead and installed the MCCT based on this tension.

My question is this: if I do have it on a little too tight, will the cam chain stretch a bit but then stop once it matches the tension applied by the MCCT? I understand that the ACCT stretches the chain, then ratchets into a new position, and again applies too much pressure leading to more stretch.

Won't mine just stretch a bit and then stop (as long as I don't change the MCCT adjustment)?

Please let me know if my logic is flawed.

Thanks.

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Once the chain has started to stretch its a downward slope. Adjust the MCCT as described in the FAQ - turn gently until the bag of nails sound stops, do not be tempted to tighten it a bit more just in case.

Dan

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Once the chain has started to stretch its a downward slope. Adjust the MCCT as described in the FAQ - turn gently until the bag of nails sound stops, do not be tempted to tighten it a bit more just in case.

Dan

I think I will mark the spot it is now, then do what you describe above, and compare the positions.

Is there a "break in" allowable chain stretch that I should expect? Seeing as it is new, should I be readjusting once more in the near future and then leave it alone?

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Way too much thought going in to this.

Adjust the MCCT as described in the write up,, go ride,, in 10,000 miles or when you rebuild the motor with your 500cc stroked, Ice Cube, Falcon rod equipped beast.. adjust the MCCT again.

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As Bronco says, adjust it and set it. Go ride and forget about it!

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Way too much thought going in to this.

Adjust the MCCT as described in the write up,, go ride,, in 10,000 miles or when you rebuild the motor with your 500cc stroked, Ice Cube, Falcon rod equipped beast.. adjust the MCCT again.

MMmmmmm!! 500cc!!!

I just went out for a ride after doing the re-jet and 3x3 mod! Too much fun. I can see why guys use these bikes as hooligan street machines!

I will set the MCCT and forget in. Thanks for the help.

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