How to Adjust The Valves On A Royal Enfield Bullet 500 Motorcycle
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- เผยแพร่เมื่อ 7 พ.ย. 2009
- Here's how to do a valve adjustment on a Royal Enfield Bullet 500 Motorcycle. It's a neat design. You can do it in under 10 minutes and don't even need to remove the valve covers. See more about my motorcycle on my website at www.hoohoohoblin.com
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Thanks,
Have broken my inlet valve push rod yesterday and replaced it in 40' minutes using your video. I noticed that the new push rod sometimes twists like I have seen on your video. The reason in my case is the cup on the rocker end or on the tappets end which is not equal. Here in India however this is normal.The price for 1 push rod here is 60 Roupies or 1.25 Us dollar, but cannot guarantee it will last or long, so I bought 5 at the same time.
Regards
Mar
Great instructional Video Bro!! I'm heading out to my driveway here in sunny southern California and will be adjusting my Tappets on a beautiful and mint 1962 350cc Bullet. Happy New Year!!
Removing the center nut that retains the tappet cover gives more freedom for movement while using spanners to adjust the tappets. Also noticed a slight wobble in the exhaust push rod.
+Anand Tuliani Thanks.
There is another school of thought. Of adjusting the push-rod clearance when the engine is hot, because thats how your engine is going to run. The only difference when adjusting it hot is that instead of the push-rod rotating freely without any play, you need to tighten it as much that you can just move it with your thumb (without spin and with burnt fingers of course). I prefer to adjust the push-rods with engine at operating temperature.
@volucerparagliders Valve clearences should ALWAYS be done when the engine is cold, that's Stone Cold, ideally left overnight or several hours until theres not a hint of warmth from any part of the block.
I like the Amal Concentric carb conversion. I'm going to do that to mine for next season.
I like your videos and explanation. Great job!
+Anand Tuliani Thank you.
Yep, you should do it when the engine is cold. You know that this type of metal expands when it's warming up so you could burn one or more valves. I know several cases of that sort. But i hope your bike keeps running great and the valves aren't going to float. :)
Can you please make a video on how to stop oil leakage from the Banjo bolts washers?
Also what is the reason for putting the gasket hole facing down 3.17 and not up?
Thanks for taking the time brah.
Great video.. I have also done the same way with my bike and the adjustment is fine
Merci grâce à vous ça redémarre au qart de tour! !
When refitting the cover you say the “hole” has to face down, any particular reason? I’ve just acquired one of these bikes and on inspection the hole in the gasket was fitted at the top so I replaced it exactly as I found it?
Thats true, you might loose a bit of compression on a cold start. But that doesn't last for more than a minute or two after which the engine starts getting sufficiently hot.
thank you for your response.I brought mechanic and he loosened the valves,and regained compression,but there came back the old sound (tick tick) with it...he says that the head section needs a full repair to remove the sound,adjusting tappat valves won't work,and it's also expensive.he also showed a single small "tick" when the kicker goes down(during start,which I normally(I think it needs very much attention to notice it) didn't notice till date.that too will cost me a lot!what's your advice?
hi there...thanks for the video...should the valves keep on rotating all time?because when I adjusted mine,and after a start,when I rechecked,the left valve is easily rotating but right one is not having neither up-down nor rotating motion,also I am suffering from low compression now(HORRIBLE!!!)...kicker is giving very low compression load...anyways it's getting started...pls give advice...
bro, mine and yours neutral light is not working. plz show how to fix it . its not nessary but for the perfection
Thanks mate, very clear and helpfull video!
You're welcome. This may be the easiest valve adjustment system ever invented.
Excellent thanks. I haven't seen a rubber gasket for the push rod cover in years. In India, we have green paper gaskets but oil still leaks out.
You’re welcome.
hoohoohoblin Thank you for this detailed explanation. I watched it a few times and I finally loosened the back pushrod and my bullet started. You are a genius!!!👍👍👍 Thank you Sir.
When I use the kick start to find top dead centre, the needle returned back to the centre on it's own accord
What should the valve clearance be in and out in mm ?
This is interesting, you don't need any measuring tools like when you ajust the valves on a japanese motor?
You just do the adjusting by feel?
Good informative Video.. Thanks Gentleman
You’re welcome.
your video is very nice
I have a 2000 RE Bullet 500. I always adjust the valves with the engine hot. Mechanics gloves are required. But I've been told that it's more accurate that way. Have you heard anything similar?
Not sure if it helps or not. I'd guess that the metal would expand when it's hot, making things a bit tighter.
Great Video! I've had a nasty clatter coming from my 2008 classic since I got it second hand last summer, didn't have clue how to adjust the valves, tried to noodle my way through Snidal's book without much success. Followed your video and I've got the beauty clatter, chatter free, thanks! Question, the bike sat for 4 to 5 years before I bought it (retirement gift never rode) so after I ended up changing out solenoid's plugs, rotten gas etc it finally ran, thankfully I've gotten good at kick starting it, lol.. I now think I have a rotted head gasket as it's leaking a little oil, any suggestions on a video for that? Thanks again.
I will get around to doing a too end job someday. I'm glad you got the valves adjusted.
i really like your video very much.. but i got one question, Is there any difference in between adjusting it when the Engine is Hot or Cold??
+PeeCee Metal expands when it gets hot and contracts when I gets cold, so I'm sure there is a difference, but I can't remember if you're supposed to check this hot or cold. I think I said it in the video, but I don't remember.
Hi , thanks for the video first. But when to do it ? how do i know that i need do it ?
It might get a little louder when it is out of adjustment. Ideally you'd want to check it before it gets out of adjustment. It is so easy to do it, that it makes sense to do it at every oil change.
Hey you not lock the cheknut left side.of puch rod typet
Wat if I adjusted abit tide ?
One of my push rods slipped off when I was adjusting them. Does that mean I need to pull off head/cylinders and reattach it from there? Or can I just push it back up and readjust like the video? Any help appreciated :) thanks!
You would probably be OK doing it from the bottom, as long as it felt like it was in the right position.
hoohoohoblin thank you for responding!
I did it today
😊
is yur front pushrod bent?
How To set inlet Cam gear 1 tooth advance but valve and piston don't crash with each other
I don’t know. I never tried to customize the timing that way.
i have same Cast iron Bike with 500cc mill, i hear lot of clatter at speeds above 70 so i thought the valves need adjustment , brought piston on TDC and there was no up and down play in valves , so i am confused what can be causing the clattering sound resembling that of Sewing machine
Not sure, but it is definitely something on the top of the engine. You should remove the valve covers and see if anything looks broken or loose. Maybe a spring is broken.
It's easier to confirm the play when the piston is at TDC during the compression stroke. Which is the successive TDC after the ammeter flicks to the center. Pay close attention to the movement of the push rods. It's right after the exhaust pushrod (one to the right) moves down. At that point, both the pushrods are relaxed and rotate freely, making it easy to check the play.
You also need to inspect whether there's backlash between the intake and exhaust cam wheels. Open up the timing case, bring the piston to TDC (the pushrods should rotate freely). Hold the exhaust / intake timing gear and try to rapidly rotate it left and right to check for play/noise. Maybe that's the cause.
Good video, but how do you know when the valves need adjusting?
Not sure. My bike is pretty loud so it is hard to hear it. If they are way loose or tight you will notice a loss of power. It is a good idea to check them at the recommended interval.
What airfilter have you installed? Could you also do a video for throttle cable change?
Rudra Raavan Mahanti I have a generic foam and oil air filter. My bike has an Amal carburetor on it, so it used a different throttle cable than a stock Royal Enfield.
***** Thanks. But wouldn't the cable mounts be similar? Atleast the towards the grip if not the unit.
Rudra Raavan Mahanti They are the same on the throttle side, but different on the carb side. It might be similar to this video: How to install a throttle cable into the old slider carbs
Shall the valves be always kept tight? My mechanic suggested that they should be kept little loose for my long rides. What do you suggest?
+Syed M Raja I don't know for sure. It does make sense to keep them a little loose, if the engine is going to get really hot in the metal is going to expand.
Thanks for the reply :)
ALL valves in ALL engines that do not have hydraulic lifters should be paper thin loose, absolutely. (.05mm to .1mm) no wonder Royal Enfield has bad durability name, nobody knows what they are doing! :)
Joes right.... if they are too tight the valve may not be closing completely.: If it never seats you lose compression. More importantly If it never seats completely, the valve never transfers the heat of combustion to the head (cooling the valve) and it can burn and melt.
Is this the older iron jug design or one of the newer aluminum alloy jugs?
This is the old iron jug version from 2001.
Did I miss the part where you retightened the jam nut?
ah ah i m not the only one who noticed it !! he forgot to lock the 12 nut !
Is this the same on the C5 EFI models?
I'm not sure, but I think they have hydraulic lifters, which means you never have to adjust them.
can i convert hydaulic lifter to solid lifter in uce (royal enfield)engine?
+Hirenbhai Patel I don’t know. I think you would like to keep them hydraulic, so it would not need valve adjustments.
hoohoohoblin but hydaulic is very noisy. In hydaulic rocker not set so make tappet noice
my bullet 350 valves not adjusting its very tight left side is ok but right side very tight what to do i fixed left side right not adjusting
sharath kumar I'm not sure. If the lock nut won't come loose so you can adjust it, you could pull the cylinder head off and remove and replace the pushrod that way.
ok
My bike is having compression loss only when the engine is cold, after driving a little compression comes back, my mechanic is saying, it is due to tappet setting problem..is it possible? Plz guide
That maybe true, but I am not sure which way the metal expands when it gets hot. It’s possible that when it gets hot the valves closed tighter because the metal expanded. If you have it adjusted the way the factory recommended, it should run normally.
@@hoohoohoblin thanks a lot sir, I got it adjusted yesterday, and as of now compression is good... The mectanic said, tappet were too tight and problem won't reoccure... Anyways thanks for your guidance
@@hoohoohoblin metal expands uniformly. Since one end of the tappet rod (the bottom end) does not have any freedom of movement, the effective elongation will appear at the Valve end. Its a bit hard to do valve adjustments with a hot engine. But is recommended to do so. RE official recommendation of doing is cold, IMO. is erring on the side of safety. Just my 2c.
its not starting when i kick smoke coming from air filter engine not starting
Cuz ur exhaust pushrod is bit tight..make sure it rotates without the play :)
Does there need to BE any up/down movement? Or NOT?
Yes. It needs a little bit of space for the metal to expand when it gets hot. In the video I show how much with a feeler gauge.
hoohoohoblin thank you for the reaction. But I don’t see where you use a feeler gauge? Or is it in another video, is that what you mean?
Sir I have Thunderbird 350 how to adjust valve pls reply
If it is an older bike like mine, from 2001 or before, it should be the same process. I think the newer bikes have hydraulic lifters so you don’t have to adjust them.
@@hoohoohoblin i have tried this method on my 1991 model 350
In india we have the gear lever right side.. And break left side
Yes. They reverse it on the American models. I’ve put a kit on mine to move it back to the proper side.
@@hoohoohoblin nice.....
Right rod is bent change it
Thanks. I do need to do that.
guys try bullet 5 shift with disc,,,,with old engines,,,,,,,its best to ride
Still tappet voice is coming!!
Metal expands when it gets hot thus tightening the clearance , bad advice. We don't need you to tell us how to wreck our motors.
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