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Old 02-22-2013, 08:32 AM   #73996
procycle
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Quote:
Originally Posted by toastmuncher View Post
Does anyone know, is the rotor bolt left or right hand threaded?
Regular right-hand thread
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Old 02-22-2013, 09:29 AM   #73997
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Question

Quote:
Originally Posted by procycle View Post
Regular right-hand thread
Thank you sir.

Now removed, just ordered a tool to remove rotor, my starter mechanism/motor seems noisy but now its apart, I can find nothing wrong, I have removed gears and ran the starter motor unloaded, it seems quiet. Its fair to say, Im puzzled.


When I get the rotor off, will I find rollers and springs? Anyone?
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Old 02-22-2013, 11:00 AM   #73998
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Welcome Wales.

Is your 'noisy' a squeal/squall when starting? Many of us have had that issue, it's the bushing in the starter on the right side (by the CCT). I greased mine about 30,000 miles ago and it hasn't made a sound since. I just took the cap off, put a wad of marine grease in the cup and reassembled it. Be sure you learn about the CCT (needing TDC, retracting the plunger and latching, releasing the plunger after installed).

If it's a mechanical crunching/grinding, yer on yer own.

Procycle did a nice photo shoot on the starter over here, including a port for future lubing.
http://drriders.com/topic7252.html
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Originally Posted by Threewheelbonnie View Post
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ER70S-2 screwed with this post 02-22-2013 at 11:11 AM
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Old 02-22-2013, 11:22 AM   #73999
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Metal sound

I recently Big bored my bike. I went for a ride today, and while on the highway it started to make a very loud metal sound and died when I pulled over. I restarted the bike, and rode slowly home. Initially I thought the valves came undone, but after checking it, the sound remains. Any suggestions?

Here is a video of the sound:

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Old 02-22-2013, 11:32 AM   #74000
toastmuncher
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Quote:
Originally Posted by ER70S-2 View Post
Welcome Wales.

Is your 'noisy' a squeal/squall when starting? Many of us have had that issue, it's the bushing in the starter on the right side (by the CCT). I greased mine about 30,000 miles ago and it hasn't made a sound since. I just took the cap off, put a wad of marine grease in the cup and reassembled it. Be sure you learn about the CCT (needing TDC, retracting the plunger and latching, releasing the plunger after installed).

If it's a mechanical crunching/grinding, yer on yer own.

Procycle did a nice photo shoot on the starter over here, including a port for future lubing.
http://drriders.com/topic7252.html
CCT? sorry, not sure what that is. Yes, sounds like an old kawasaki starter on a 70s zed. The motor runs quiet when spinning free and without load.
Help!!!!!!
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Old 02-22-2013, 11:41 AM   #74001
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Quote:
Originally Posted by toastmuncher View Post
CCT? sorry, not sure what that is. Yes, sounds like an old kawasaki starter on a 70s zed. The motor runs quiet when spinning free and without load.
Help!!!!!!
cam chain tensioner.
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Old 02-22-2013, 11:48 AM   #74002
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Quote:
Originally Posted by Rusty Rocket View Post
cam chain tensioner.
Thank you Sire.
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Old 02-22-2013, 11:56 AM   #74003
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Quote:
Originally Posted by planemanx15 View Post
I recently Big bored my bike. I went for a ride today, and while on the highway it started to make a very loud metal sound and died when I pulled over. I restarted the bike, and rode slowly home. Initially I thought the valves came undone, but after checking it, the sound remains. Any suggestions?

Sounds serious. Take it apart, start over. Something has broken or is out of spec. Probably an assembly error. Hope not too much is ruined internally.
Good luck.
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Old 02-22-2013, 12:03 PM   #74004
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Quote:
Originally Posted by Adv Grifter View Post

Sounds serious.
I don't think it's inside the cylinder or it would've quit during that demo.

Cam chain maybe. auto decompressor or balancer??? don't run it anymore.
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Old 02-22-2013, 12:03 PM   #74005
bluegroove
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If you have the nerve to run it anymore you may be able to isolate the source by: holding a piece of heater hose to your ear and the other end close to diff areas of the bike. OR with handle of a large screwdriver stuck in your ear and touch the tip to diff spots on engine.
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Old 02-22-2013, 12:26 PM   #74006
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Quote:
Originally Posted by planemanx15 View Post
I recently Big bored my bike. I went for a ride today, and while on the highway it started to make a very loud metal sound and died when I pulled over. I restarted the bike, and rode slowly home. Initially I thought the valves came undone, but after checking it, the sound remains. Any suggestions?
That's not good at all. Frankly it sounded louder on the left side to me...

If it were my bike, I would pull the head. See if the piston might be hitting the valves.

If that looks good, I would be tempted pull the clutch and see if there's anything going on down there, since you did the clutch before the big bore.

Next step, I'd pull the cylinder and inspect it, the piston, the rod, etc, etc, etc.

And I think somebody else suggested draining the oil too -- look for metal shavings in there. If there are, then we have a big problem.

Rob
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Old 02-22-2013, 12:49 PM   #74007
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I agree with Rob . Its a lot of money invested in the engine , Better be safe then sorry. I know its crappy to think about the work but it may save you replaceing the entire thing.
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Old 02-22-2013, 12:53 PM   #74008
Rob.G
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Quote:
Originally Posted by PPCLI-Jim View Post
I agree with Rob . Its a lot of money invested in the engine , Better be safe then sorry. I know its crappy to think about the work but it may save you replaceing the entire thing.
As much as it sucks to have to tear into it again, it'll go much easier, since you've already done it once. Same with reassembly. And you'll be that much better at it, and know your bike that much better.

I still wonder if it isn't the cam chain tensioner. I've been thinking about this a lot. The bike ran fine for a while, until you really went and rode it. So something has gotten out of whack since then. It's not like it started off sounding like this. So... what could it be?

Years ago, I bought a used Polaris RMK800 snowmobile. Turns out the top-end was fried. I ordered a new jug and a pair of pistons and R&R'd it. Went for a ride. It ran pretty good. The only odd thing was when I shut the motor off, it stopped. Instantly. Like, it didn't turn over one or two more times, it just STOPPED. I found that odd.

Long story short, one of the circlips holding a piston on came out. You can only imagine the mess it made. I'm amazed the thing ran at all. But it ate the head, both pistons, one jug, and dinged up one of the rods. What a mess. I ended up replacing the entire top end with a (used) ported top end, and had a new rod put on the crank. Rode it twice more and sold it. Lost my ass on it of course. :)

Rob
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Old 02-22-2013, 01:50 PM   #74009
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Kinda sounds like piston slap...
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Old 02-22-2013, 03:25 PM   #74010
Carl Childers
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Quote:
Originally Posted by sandwash View Post
Or you can buy a momentary mini switch from Radio Shack,fits inside the housing.

Any online source for this switch? My stock starter switch took a hit and probably won't last much longer. I live many miles from the nearest Radio Shack.
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