Question about 1982 Laverda 1000 Jota

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How do i set the cams up on a 120 jota?

I lifetd the cams out of my jota and took the head of to replacethe ea gasket, now the valves are hitting he pistons, so somewhere I didn't put it back as I took it apart. how do I setup the cams again?

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Not exactly certain but I believe the settings are 17mm for both the exhaust and intake. Cold engine settings of course. I dont believe there are hot settings available or necessary. Best to stick with the expertise of the North American guy previously mentioned.

Posted on Aug 09, 2009

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Trying to remember, but all I had were twins. The triples were harder to come by. What's the guy's name? Wolfgang! He's the North American guy for older Laverda parts. He goes to the factory in Italy at least once a year. He lives in British Columbia, Canada. If you can't find him, check back with me. I will find his info. Good luck. TT

Posted on Jan 28, 2009

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1 Answer

Does the piston stay conected to conrod when changing head gasket...will the head come past the piston?

Yes they do. You'll probably have to hit the head with a rubber mallet a few times to loosen it up, but then it will just slips off and the pistons stay connected to the rods. You really need a shop manual for this because you'll have to take the cam chains off and then re-set the cam timing when you put it all back together. No big deal if you follow the instructions closely, but if you get it wrong you'll wreck the motor when you go to start it. Also, as long as you've got the motor apart you might consider changing the cam chains depending on how many miles the bike has on it.

Oct 29, 2014 | Motorcycles

1 Answer

How emportent is one cyl. Out of four down 30lbs on 4 Cyl. Honda

Actually, that is pretty significant discrepancy. Even though it's a flat four and one of the smoothest engines for bikes ever made, that much of a difference IS going to be noticeable. Not only that, it's about 99% a fact that it will not get better, but worse over time.

Since the GL1100's use single over head cams, the valve adjustments are critical. Due to a valve seating a little too deeply into its seat in the combustion chamber the the valve to rocker arm clearence will be diminished, and possibly become non-existant, keeping the valve open just a hair all the time. SOLUTION: Get some new valve cover o-rings gaskets, remove the covers, and adjust all of the valve clearances. If you have a tight one, You'll find it.

You also may have a burnt exhaust valve or a bent valve, causing a bad seal between the valve and the seat, allowing air to slip past lowering that cylinder presure.

Other possibilities are a Blown head gasket (Not uncommon with high millage bikes). Broken piston rings, or excessive wear of the rigns cause ring end gaps to get too large letting to much blow by. Broken Rings or heavily worn rings will be evident by blue smoke in the exhaust from the oil getting by the rings. Blown head gasket can allow coolant to get into the cylinder, or into the oil, making the oil foamy and brown. In either of these three possibilities, the heads will have to be removed. And depending on your findings, a engine overhaul may be needed.

Before pulling the heads however, get a scope that goes in through the spark Plug hole to view the inside of the cylinder to look for scoring, piston damage, etc.

Best of luck

Apr 09, 2014 | 1981 Honda GL 1100 Innerstate Gold Wing

1 Answer

Replacing the head gaskets and valve cover gaskets, how do you set the timing for the over head cam

Set the engine to top dead center for number one cylinder. As you remove the rocker covers, take pictures of their position. When removing cam gears and heads DO NOT ROTATE the engine even the slightest amount. You can then reassemble the engine without re timing it. If you move it you will need a shop manual and some time to get it right. Good luck.

Mar 01, 2014 | 2003 kawasaki VN 800 Vulcan Classic

1 Answer

What would cause my 2001 dr-650 to leak oil at the top of the cylinder near the exhaust only when running? is it difficult to repair?

Sounds like a bad head gasket. Try the following. Remove the head cover and tighten down the head bolts. Don't tighten the cam bolts. Remount the cover and hope that sealed up the leaking gasket. If not, the head will need a new gasket. Remove the head cover and sparkplug, put the piston at TDC compression then note the cam gear reference mark)s) position. The gear will need to go back in in the exact same position. Remove the cam gear and dismount the chain from the cam. Hook a wire to the cam chain so it can't fall into the tranny. Now pull the head off and remove the carbon from the head an piston then replace the gasket. It would be a good idea to reseat the valves since you have the head off. I don't really recommend this repair for the beginner. Please rate my answer. tombones49_91.gif

Apr 20, 2011 | 2001 Suzuki DR 650 SE

1 Answer

Bike is reving but losing power

The loss of power is usually due to the need for a valve job. Do a compression check. If compression is lower than 120 psi a valve job is called for. While you have the head off, install new rings. Considering the age of the bike, a new cam chain would not be a bad idea as well. Another possibility is a lean fuel/air mixture; If the bike has an idle speed that you can not get to slow down then there is an air leak letting un-carbureted air into the mix. Cracked rubber seals or bad gasket on the intake manifold would be the likely source. tombones49_50.gif

Apr 03, 2011 | 1993 Honda CB 250 Nighthawk

1 Answer

Hello iv changed the piston on my kids honda xr 50 now it wont kick over i can move the piston through the head pulling the small chain in the cylinder head about 2 turns of the coge the opposite way to...

It sounds like you have not set the cam chain timing. If the cam is not timed to the piston position, the piston can come up and hit an open valve. If you put the engine together and kicked it over so the kick jammed then the piston has hit an open valve and chances are very strong that the valve is now bent. Bummer... If bent badly enough the valve guide may be cracked as well. Double bummer... I would pull the head off and do a visual inspection of the valves. Do they LOOK fully closed? Can you see a strike mark on the top of the piston? If all looks good, I would put the head back on then set the cam timing then turn the flywheel over by hand a full four revolutions. If it doesnt bind up you should gently push the kick lever to turn the engine over a few times. Okay, the piston doesn't seem to be hittinng a valve. Now do a compression check. You want to have 130 to 160 psi. If you do, the valves are okay. Get back to me by posting a comment if you don't know how to set the cam timing. The following diagram may be self explanitory. Please rate my answer. Thanks.


Feb 21, 2010 | 2002 Honda XR 200

2 Answers

How do i replace the head gasket on my Suzuki LS650

To replace the head gasket disconnect the battery, remove the tank, remove the rocker cover. Manually turn the crank shaft until the engine is on top dead center compression stroke and the lines on the cam shaft gears are even with the top of the cylinder head. At that point evenly loosen the bolts that hold the cam shaft. Do one cam shaft at a time. Before you remove the second cam shaft tie a piece of wire to the cam chain then let the chain fall into the hole after removing the second cam. Loosen the carburator mounts and slide the carburators back so they are free of the engine. Now you can evenly loosen the head bolts and then remove the head. Check the head and cylinder for signs of warping or why the gasket needs to be changed. When you replace the head gasket make sure the gasket fits over the guide pins. Reassembly is essentially reverse of the disassembly. After you get the head torqued to specs, you will be glad you fought that wire attached to the cam chain when you start to install the cams. Make sure each cam goes back from where you took it from and the lines line up like they were before you took them out. Don't forget to install a new gasket on the rocker box.

Nov 05, 2009 | 2001 Suzuki LS 650 Savage

1 Answer

Lotsof knocking no power

If the cam chain jumped then the tensioner is not tight. Timing is way off and valve hit piston. Need to **** case and replace tensioner, dry time then install new piston and pull vales to see if they are bent.

Sep 23, 2009 | 2000 Husqvarna TE 610

3 Answers

04 crf 250r.... the head has a chattering noise when running

Any chance the valve spring has collapsed? Cam shaft thrust washers missing? Cam shaft bearing gone bad?
abe5193.gif b3c3550.gif Please rate this solution. Thanks!

Jun 22, 2009 | 2005 Honda CRF 250 R

2 Answers

Valve timing

Go to a yamaha dealer to see if they can order the right manual, if you known when the valves opened and close i could try ot tell you how to set them..

Mar 26, 2009 | 1983 Yamaha XS 400 L Maxim

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