Timing Mark Help

4839 Views 47 Replies 6 Participants Last post by shadetree, Mar 19, 2019

Duck0fDeath

Discussion Starter · Mar 10, 2019

I'm still getting a ticking noise even after replacing my timing chain. Started wondering if I'm using the wrong mark on the flywheel. I've known there was a second mark just past where I've been using but I could clearly see the "T" on the top mark, so that's what I use. My eyes aren't so good. Today I pulled the cover off my spare to get a good look at the flywheel. Now I'm thinking I should be using the lower mark with the "T" turned sideways.

Which is it?

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shadetree

· #2 · Mar 10, 2019

the line that sits right under the T, is what you line up with the index on the cover/case

. seeing how these have 4 valves ?, its a pain to get both intake and exhaust valves set right, been there, done that..lol.

shadetree

· #3 · Mar 10, 2019

at least your oil looks great !..lol.

shadetree

· #4 · Mar 10, 2019

gotta ask...lol. when you put the cam chain and sprocket in the head, did you make sure that the lines on the cam sprocket was even with the head surface ??. and cam lobes facing straight down ?. the main thing is the lines stamped on the cam sprocket..THEY MUST BE LINED EVEN TO THE HEAD SURFACE !!!!!!.

shadetree

· #7 · Mar 11, 2019

Duck0fDeath said:
Damn. I'm doing it right then. Yes, lines on cam sprocket line up with the head. It's running great. Valves are adjusted right. What's weird is one of my motors was quiet until I replaced the rings, valve seals, lapped the valves, and cleaned up the head. Afterwards, it sounded just like my other motor both before and after I did the same work. The timing chain needed to be replaced but it made no difference in the noise. I may tear the top end off the spare to see if I can spot anything obvious going on that might explain the noise on my good motor.

then my only guess from this on out is, your valves are not set right bro

.

shadetree

· #8 · Mar 11, 2019

how did the cam lobes look ?, rocker surface ?.

shadetree

· #9 · Mar 11, 2019

i've seen many rocker surfaces ate away because owners did not set them right ?, or they ran the top end dry from installing the oil filter backwards ?..lol.

shadetree

· #11 · Mar 11, 2019

Duck0fDeath said:
Rocker arms and cam lobes look good. Not too worn and no scratches.

then I have to go with the valves not set right.

shadetree

· #16 · Mar 12, 2019

Duck0fDeath said:
Checked the tensioner and reinstalled. I have two others but this one seems solid, so I didn't swap it out. Made a quick video of the running motor. Maybe someone's got an ear for what's going on with it.

https://www.youtube.com/watch?v=5Gv-Vd3qflM

valves or cam chain tensioner. and have you looked at the adjustment on the decompression release lever ?.

shadetree

· #17 · Mar 12, 2019

if you get tired of pulling your hair out over this ?, load it up, bring it down here, i'll solve the problem..lol.

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shadetree

· #18 · Mar 12, 2019

Duck0fDeath said:
Checked the tensioner and reinstalled. I have two others but this one seems solid, so I didn't swap it out. Made a quick video of the running motor. Maybe someone's got an ear for what's going on with it.

https://www.youtube.com/watch?v=5Gv-Vd3qflM

did you install a new D.I.D. cam chain in this ?, was it the correct chain ??.

shadetree

· #19 · Mar 12, 2019

p.m. me your phone number, do not post it out here !..lol.

shadetree

· #21 · Mar 12, 2019

retro said:
If the cam journals are good and the compression release cam/lever is not bouncing off of the rocker arm while its running, my guess is that it might be a slight exhaust gasket leak on one of the header pipes. Sometimes those two pipes don't fit the same (difficult to center each of them perfectly over the exhaust ports) after they are unbolted from the head the first time.

this crossed my mind retro ^^^. I tried to watch the decompression lever to see if it was bouncing ?, I could not see it moving ?. then I thought about the exhaust leak. what's odd is, he said something about the cam chain needing replacing in his first few post, but I don't think he put a new chain in ?.

shadetree

· #24 · Mar 12, 2019

stick the cam chain tensioner in the cylinder like you see me doing in this pic, if its anywhere close to the distance this shows ?, you got something wrong ?, or the tensioner is not working right ?. unbolt yours, let it fully extend, then push it back in the cylinder like your going to bolt it up. if the cam chain is good , and the tensioner is working right ?, it should not be anywhere as close as this pic shows !. you should feel the tensioner hit the chain guide wayyyyyyy before you get close to the cylinder.

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shadetree

· #26 · Mar 12, 2019

Duck0fDeath said:
I checked out the tensioner last night. I cant force it to retract by pushing on it against the bench, only by turning the screw. Before I replaced the chain I had a little less than a half inch before it made contact with the chain guide, now I've got about an inch. I may swap it anyhow, since it only takes a few minutes.

if you have an inch on the tensioner before it touches the cylinder when fully out ?, then there is nothing wrong with either it or chain.

shadetree

· #29 · Mar 14, 2019

Duck0fDeath said:
TRX2fiveO said:

If you can retract that tensioner without turning the screw then it's no good...... also set the lash with a tight drag on the feeler

Sent from my SM-N950U using Tapatalk

Click to expand...

Tensioner is solid. I'll give that adjustment suggestion a shot. I know I'm currently set on a light drag.

Torqued down the header mounting nuts a little last night. I don't believe I'm leaking. Pretty sure the noise is rocker arm/valve related. I could feel the rocker vibration through the brass caps on the side of the cover. The pulsing matches the ticking noise. Maybe I've just been setting the valves too loose. I'll feel dumb if that's all it is, but I can live with that easier than the ticking noise

I just gottaaaaaaaaaaa ask ( go figure )..when your adjusting the valves, are you doing it on a stone cold engine ?, or you doing this on a warm engine at any point ?. reason: you can not adjust the valves on an engine that has been ran for any amount of time !, it has to be done on a cold engine.

shadetree

· #31 · Mar 14, 2019

and just so you know ?..again..these old girls are very picky about the correct valve adjustment !!!!..lol.

shadetree

· #32 · Mar 14, 2019

TRX2fiveO said:
Duck0fDeath said:

TRX2fiveO said:

If you can retract that tensioner without turning the screw then it's no good...... also set the lash with a tight drag on the feeler

Sent from my SM-N950U using Tapatalk

Click to expand...

Tensioner is solid. I'll give that adjustment suggestion a shot. I know I'm currently set on a light drag.

Torqued down the header mounting nuts a little last night. I don't believe I'm leaking. Pretty sure the noise is rocker arm/valve related. I could feel the rocker vibration through the brass caps on the side of the cover. The pulsing matches the ticking noise. Maybe I've just been setting the valves too loose. I'll feel dumb if that's all it is, but I can live with that easier than the ticking noise

Click to expand...

You want a tight drag and adjusted on a cold engine. I set the drag so I actually have to use a little force to get it back in between the tappet and valve

Sent from my SM-N950U using Tapatalk

lol bro, we both chimed in about the cold engine adjustment...lol.

shadetree

· #35 · Mar 14, 2019

something is not right with the rockers ?, valve adjustments ?. is plenty of oil reaching the rocker box ?. I know for a fact something is not right with the first two I mention here !.

shadetree

· #37 · Mar 14, 2019

Duck0fDeath said:
I'll pull the cover off and check those rocker arms again. I put new 0-rings on them but didn't inspect the shafts too closely. I have a spare cover set that I haven't pulled the arms out of because I couldn't easily get the dowel pins out. I'll work them over some more and stick the best one back on. Thanks guys.

I am more worried about the rocker faces than the shafts !. that, and the cam lobes.

shadetree

· #38 · Mar 14, 2019

Duck0fDeath said:
I'll pull the cover off and check those rocker arms again. I put new 0-rings on them but didn't inspect the shafts too closely. I have a spare cover set that I haven't pulled the arms out of because I couldn't easily get the dowel pins out. I'll work them over some more and stick the best one back on. Thanks guys.

speaking of you tinkering with the rockers..i just gotta ask !..lol, any slight chance you put the rockers back in backwards ???..as in..intake on exhaust side, and exhaust on intake back on the shafts ??..lol.

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