Valve check?? - BMW Luxury Touring Community
 
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post #1 of 19 Old Mar 10th, 2012, 3:04 pm Thread Starter
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Valve check??

Guys;

I took of the lower plastic, and the plug cover and removed the valve cover and gasket.

I tried to rotate the rear wheel to get the number 1 valve ready to check, but the rear wheel is to hard to turn with the plugs in.

I really need to take the plugs out to take the valve measurements, or is there an easier way and leave the plugs in!!

Waiting for the replys before I advance,
Thanking you in advance,

Bowdon

Its a 2005 lt.
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post #2 of 19 Old Mar 10th, 2012, 3:15 pm
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Re: Valve check??

Quote:
Originally Posted by bowdon
Guys;

I took of the lower plastic, and the plug cover and removed the valve cover and gasket.

I tried to rotate the rear wheel to get the number 1 valve ready to check, but the rear wheel is to hard to turn with the plugs in.

I really need to take the plugs out to take the valve measurements, or is there an easier way and leave the plugs in!!

Waiting for the replys before I advance,
Thanking you in advance,

Bowdon

Its a 2005 lt.
Wuz the gearbox in 5th gear? That's where I put ole Toad's gear, and just bounce-rotate the wheel to get rotation so that the cam lobes move.
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post #3 of 19 Old Mar 10th, 2012, 3:17 pm
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Re: Valve check??

Use 5th gear when rotating with the rear tire or remove the front timing cover and use an allen socket to rotate the crankshaft (CCW viewed from the front)
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post #4 of 19 Old Mar 10th, 2012, 3:18 pm Thread Starter
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Re: Valve check??

Quote:
Originally Posted by Dick
Wuz the gearbox in 5th gear? That's where I put ole Toad's gear, and just bounce-rotate the wheel to get rotation so that the cam lobes move.
Dick;

Yes its in 5th but extremely hard to get the wheel to move!!
It would be easier to rotate the tire with the plugs out, right??
Bowdon
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post #5 of 19 Old Mar 10th, 2012, 3:19 pm
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Re: Valve check??

Make sure you have it in 1st gear. It should be easy to rock the rear wheel back and forth to bump the engine around. Did it many times, on multiple bikes.

Pulling the plugs before checking the clearances is a no-no on these engines, can cause false readings.

edit; Wrong! Don't know what I was thinking about, it is 5th gear you want!

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EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
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Last edited by dshealey; Mar 10th, 2012 at 7:55 pm.
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post #6 of 19 Old Mar 10th, 2012, 3:21 pm Thread Starter
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Re: Valve check??

Quote:
Originally Posted by dshealey
Make sure you have it in 1st gear. It should be easy to rock the rear wheel back and forth to bump the engine around. Did it many times, on multiple bikes.

Pulling the plugs before checking the clearances is a no-no on these engines, can cause false readings.
Dave;

I thought 5th gear was mentioned, first would be easier?
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post #7 of 19 Old Mar 10th, 2012, 3:40 pm
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Re: Valve check??

Don - I found it easy to rotate the engine in 5th sitting behind it using both arms to pull at the bottom of the wheel

Gary
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post #8 of 19 Old Mar 10th, 2012, 4:28 pm Thread Starter
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Red face Re: Valve check??

Quote:
Originally Posted by gary45
Don - I found it easy to rotate the engine in 5th sitting behind it using both arms to pull at the bottom of the wheel
Gary;

Just finished the valve check, all seem within the specs. ( one a little loose but within the spec).

The wheel was hard to get around, but finally got it moving!!
Gasket look OK will reinstall and let it dry for an hour that start er up!! to see if any leaks.

Regards,
Bowdon
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post #9 of 19 Old Mar 10th, 2012, 6:39 pm
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Re: Valve check??

Quote:
Originally Posted by Dick
Wuz the gearbox in 5th gear? That's where I put ole Toad's gear, and just bounce-rotate the wheel to get rotation so that the cam lobes move.
Dick has it right 5th gear and just bounce the tire or bump it call it what you want to. You don't just rotate it you bounce or bump it to rotate it a little bit at a time.

Dave Selvig
2004 Black LT
2000 Canon Red LT



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post #10 of 19 Old Mar 10th, 2012, 7:56 pm
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Re: Valve check??

Quote:
Originally Posted by bowdon
Dave;

I thought 5th gear was mentioned, first would be easier?
It is 5th gear. Suffered a brain freeze.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
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post #11 of 19 Old Mar 12th, 2012, 7:11 am
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Re: Valve check??

Bowdon -- I never checked my value clearance -- although I would like to. I am guessing that all that one needs is a feeler gauge -- is this correct? Pardon my ignorance, where did you get that feeler gauge -- pep boys or some other retail shop?

Glenn
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post #12 of 19 Old Mar 12th, 2012, 3:00 pm
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Re: Valve check??

Bowden: Never mind my last question -- just checked the site and found all the information that I need to know!!!!

G
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post #13 of 19 Old Mar 12th, 2012, 3:31 pm
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Re: Valve check??

Quote:
Originally Posted by dshealey
It is 5th gear. Suffered a brain freeze.
That's OK, David... You have probably forgotten more about LTs than I will ever know about them!

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post #14 of 19 Old Mar 12th, 2012, 9:25 pm
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Re: Valve check??

I think I levered a axe handle in the "spoke" of the wheel against the final drive to allow some leverage on bumping the wheel with my foot while checking clearance.

Jim H.
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post #15 of 19 Old Mar 13th, 2012, 11:21 am
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Re: Valve check??

I watched Sayegh's video twinkle towing the engine around with his foot to do the valve check. He either had the plugs out, or all his piston rings are shot, or he is Bigfoot in disguise. I'm in the process, and had to use both hands on the wheel with the bump movement proclaimed here.

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post #16 of 19 Old Mar 13th, 2012, 11:23 am
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Re: Valve check??

The trick is to use the slack in the drive train to build momentum so when you "hit" the end it moves the cams a few degrees at a whack. That is why top gear is your friend.

John
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post #17 of 19 Old Mar 13th, 2012, 2:07 pm
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Re: Valve check??

Confession time. My K12LT is my 5th original K motored bike both 2 and 4 valve. I always pull the plugs to facilitate turning the engine over for a valve check. The recommendation to leave the plugs in comes from the notion that it's "possible" for a particle of carbon to come free from a plug being removed, wedge under the seat of an exhaust valve, and give an erroneous shim clearance reading.. On a normal running engine I've never seen plugs gunked up enough to feel that was a valid concern. But then I'm also a rather lazy sort so turning over a compressing engine isn't my idea of afternoon fun. I don't think I've miss-shimmed a valve yet.

JD

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post #18 of 19 Old Mar 13th, 2012, 7:15 pm
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Re: Valve check??

True Jeff and everyone is entiled to thier opinion, some of us are just more "anal" than others!! Cheers

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
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2004 330 Ci Convertable
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But lack DE, MA, RI and CT with the 2005 LT

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post #19 of 19 Old Mar 13th, 2012, 7:30 pm
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Re: Valve check??

Quote:
Originally Posted by Roamrider
Confession time. My K12LT is my 5th original K motored bike both 2 and 4 valve. I always pull the plugs to facilitate turning the engine over for a valve check. The recommendation to leave the plugs in comes from the notion that it's "possible" for a particle of carbon to come free from a plug being removed, wedge under the seat of an exhaust valve, and give an erroneous shim clearance reading.. On a normal running engine I've never seen plugs gunked up enough to feel that was a valid concern. But then I'm also a rather lazy sort so turning over a compressing engine isn't my idea of afternoon fun. I don't think I've miss-shimmed a valve yet.

JD
The problem is that deposits around the edge of the plug body at the end of the threads can break off and fall down into an open valve. You are right, the possibility is pretty low, but it does exist. I for one would not do a valve check removing the plugs first, because I just do not want to take the chance, however small, of getting it wrong and having to open her up and do it all over again. Moving the engine by bumping the rear wheel is EASY, done it many times. Just not worth taking the chance for me. I just do not understand how anyone thinks it is difficult? You do not "spin" the engine, just bump it until the cams are in proper position to check the next few valves. You only have to re-position the cams 3-4 times to check all the valves. Certainly not much of a task overall when doing the valve check.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
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