Accel Coils

[oldyam80sg]

I think I tried to do this mod many years ago but it didnt work out to well. I think i ran into mounting issues that I couldnt figure out at the time. Back then I bought them from Dennis Kirk.

[Ranger_xs1100]

I think I had a problem in the past with not being able to remove the valve cover when mounted in the low position.

Speaking of removing the valve cover, next up is replacing the OEM manual cam chain tensioner with an automatic tensioner. I know I have to remove the side cover and rotate the crankshaft until the "C" is lined up with the pointer. Is there any reason why I would have to remove the valve covers to do the ACC upgrade?

[Tonyxs11]

Speaking of removing the valve cover, next up is replacing the OEM manual cam chain tensioner with an automatic tensioner. I know I have to remove the side cover and rotate the crankshaft until the "C" is lined up with the pointer. Is there any reason why I would have to remove the valve covers to do the ACC upgrade?

does it say that in the manual ? if so its probably to make sure the cam timing is correct.

[bikerphil]

I wouldn't take the valve cover off unless it leaks and needs attention. Just make sure the bike is on the centerstand otherwise the chain can slip off the crankshaft teeth if it is leaning left on the sidestand.

[Ranger_xs1100]

does it say that in the manual ? if so its probably to make sure the cam timing is correct.

Tony, The manual says to check the cam chain timing. But that is in reference to installing the CCT after an engine rebuild when the valve cover is already off. However, I haven't found any instructions regarding CCT replacement. There is no mention of checking the timing marks just for normal manual CCT adjustments, but that is done without removing the tensioner. I don't think it is necessary to check the timing in this case, but since I've never done the automatic tensioner mod before, I decided I should check here first.

Thanks BikerPhil for the good advice. I do have the bike on the center stand. Well, it looks like nothing more than a vulture picked bike carcass on the center stand at this point! Reassembly begins soon!

[bikerphil]

Bob, just to add, after the ACCT is installed, I would slowly rotate the engine by hand clockwise a few revolutions with the 19mm wrench just to make sure everything is OK before cranking over with the starter.

[Tonyxs11]

their will be no issue when removing the CCT, i had to remove mine to replace the gasket as it was leaking, just turned the crank to the C position.
also when i checked my cam timing the cam's where both a tooth out, with the CCT removed their is no way you can move the cam's to adjust them as the chain will not lift off the sprockets enough, so theirs no danger of the cam timing slipping. I had to unbolt the sprockets off the cam's to move them one tooth to get the timing right.

[Ranger_xs1100]

Done! Fortunately, the ACCT installation was uneventful... After installed, I followed Phil's advice and turned the engine over by hand several rotations. It turned smoothly and I didn't hear anything unusual. Thanks guys. Next step is front end reassembly.

[bikerphil]

Glad it went easy. The nice thing about the ACCT besides never having to do an adjustment, is the now extended life of the cam chain. Instead of 60K replacement, it will go well over 100K miles due to the extended tensioner travel.

[pete_s]

Hi Phil, I ran a ACCT for a while but went back to stock because I was nervous about the extra tension from a Raptor tensioner from ebay.
Whats the best one to use? Thanks Pete

[Radioguylogs]

I put a Vmax tensioner on my Venturer and the spring is much more forceful than the original CCT.

Makes me nervous about wear on the cam chain guides.

[bikerphil]

I use the Vmax tensioners on my 2 bikes, many, many, many miles on both and no problems yet. I haven't taken the motors apart to inspect the wear on the guide, so I can't say about excessive wear.
I have never heard of a failure with this mod. Ivan really hit it out of the park developing this one.

https://xs11.club/forum/idle-talk-fo...er-for-xjs-too