QUESTION about timing belts
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- BikeMaine
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QUESTION about timing belts
Keep in mind that I have never changed a timing belt before.
Just to be clear, I have read the directions and watched a few videos and I have complete confidence to do this job.
However, could a person, if so inclined do it differently? (not saying I'm going to do this, but I'm a curious person.)
Here's my scenario:
Instead of turning the engine to TDC and so forth, why couldn't a guy just remove timing belt covers, mark both cam pulleys with a Sharpie and a corresponding mark on the engine that matches up with the mark on the pulley? Either way, the timing stays the same.
I'm not a mechanic, but this is what I think of when I'm bored....
Just to be clear, I have read the directions and watched a few videos and I have complete confidence to do this job.
However, could a person, if so inclined do it differently? (not saying I'm going to do this, but I'm a curious person.)
Here's my scenario:
Instead of turning the engine to TDC and so forth, why couldn't a guy just remove timing belt covers, mark both cam pulleys with a Sharpie and a corresponding mark on the engine that matches up with the mark on the pulley? Either way, the timing stays the same.
I'm not a mechanic, but this is what I think of when I'm bored....
Kevin
1982 GL1100A
1982 GL1100A
- Whiskerfish
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Re: QUESTION about timing belts
I don't think there is any position that you could have them in that they will not move when the belts are removed. The spring tension from the valve springs are going to seek a neutral spot. That is why the standard is to use TDC. It is just a safer starting point.
But yes theoretically you could do it from anywhere if you could lock them in good.
But yes theoretically you could do it from anywhere if you could lock them in good.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
"Yea I do dance awkwardly, and I am having more fun than you" Taylor Swift
2008 GL1800 IIIA "TH3DOG"
1984 GL1200 Standard
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
Psst. oh and by the way CHANGE YOUR BELTS!!!!
"The book is wrong, this whole Conclusion is Fallacious" River Tam
"Yea I do dance awkwardly, and I am having more fun than you" Taylor Swift
2008 GL1800 IIIA "TH3DOG"
1984 GL1200 Standard
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
Psst. oh and by the way CHANGE YOUR BELTS!!!!
- BikeMaine
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Re: QUESTION about timing belts
Whiskerfish,
For instance, in this Youtube video, the guy takes a deep-well socket and vise-grips it through the pulley hole. He did this on both pulleys with a new belt within the loop on the vise-grips.
Couldn't this be accomplished like this without setting TDC and do the same thing with the vise-grips?
For instance, in this Youtube video, the guy takes a deep-well socket and vise-grips it through the pulley hole. He did this on both pulleys with a new belt within the loop on the vise-grips.
Couldn't this be accomplished like this without setting TDC and do the same thing with the vise-grips?
Kevin
1982 GL1100A
1982 GL1100A
- gltriker
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Re: QUESTION about timing belts
Where's eric?
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
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^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
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Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- BikeMaine
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Re: QUESTION about timing belts
gltriker wrote:Where's eric?
If it isn't wise or good practice, that's cool too, but I'm just curious.
Kevin
1982 GL1100A
1982 GL1100A
- gltriker
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Re: QUESTION about timing belts
Not judging the value of your question......at all. (note my mantra in my signature line)BikeMaine wrote:gltriker wrote:Where's eric?
If it isn't wise or good practice, that's cool too, but I'm just curious.
Just thought of ericheath and his extensive experimentations with GL camshafts and timing pulleys.
Last edited by gltriker on Fri Apr 28, 2017 12:49 pm, edited 1 time in total.
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- BikeMaine
- Gold Member
- Posts: 1105
- Joined: Sun Feb 07, 2016 7:57 pm
- Location: Maine, U.S.A.
Re: QUESTION about timing belts
No, no, all's good Brother, I didn't think that at all.gltriker wrote:Not judging the value of your question......at all.BikeMaine wrote:gltriker wrote:Where's eric?
If it isn't wise or good practice, that's cool too, but I'm just curious.
Just thought of ericheath and his extensive experimentations with GL camshafts and timing pulleys.
Kevin
1982 GL1100A
1982 GL1100A
- gltriker
- Honored Life Member
- Posts: 5062
- Joined: Fri Sep 24, 2010 9:11 pm
- Location: central NY State
Re: QUESTION about timing belts
BikeMaine wrote:No, no, all's good Brother, I didn't think that at all.gltriker wrote:Not judging the value of your question......at all.BikeMaine wrote:
If it isn't wise or good practice, that's cool too, but I'm just curious.
Just thought of ericheath and his extensive experimentations with GL camshafts and timing pulleys.
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- 5speed
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Re: QUESTION about timing belts
my comment is based on working on small block chevies..so it may be way out in left field...lol
putting the #1 cylinder on TDC means both valves are closed..which means no valve spring resistance from that cylinder..
apparently this is an issue on wing motors as the right hand cam pulley will move due to valve spring pressure.
if you mark both pulleys in a random spot you may end up with valve spring pressure on both cams..and both pulleys will move on you..
how did I do Eric?
putting the #1 cylinder on TDC means both valves are closed..which means no valve spring resistance from that cylinder..
apparently this is an issue on wing motors as the right hand cam pulley will move due to valve spring pressure.
if you mark both pulleys in a random spot you may end up with valve spring pressure on both cams..and both pulleys will move on you..
how did I do Eric?
1982 1100 standard. (sold)
1986 Yamaha FJ1200
2000 Yamaha Roadstar
1976 GoldWing. running but not on the road
1978 Goldwing. future cafe project.
2019 Can-Am ryker (boss's new ride)
2002 Shadow American Classic(sold)
1983 Shadow 500. (sold)
1986 Yamaha FJ1200
2000 Yamaha Roadstar
1976 GoldWing. running but not on the road
1978 Goldwing. future cafe project.
2019 Can-Am ryker (boss's new ride)
2002 Shadow American Classic(sold)
1983 Shadow 500. (sold)
- BikeMaine
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- Joined: Sun Feb 07, 2016 7:57 pm
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Re: QUESTION about timing belts
I can understand that5speed wrote:my comment is based on working on small block chevies..so it may be way out in left field...lol
putting the #1 cylinder on TDC means both valves are closed..which means no valve spring resistance from that cylinder..
apparently this is an issue on wing motors as the right hand cam pulley will move due to valve spring pressure.
if you mark both pulleys in a random spot you may end up with valve spring pressure on both cams..and both pulleys will move on you..
how did I do Eric?
Kevin
1982 GL1100A
1982 GL1100A
- ericheath
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Re: QUESTION about timing belts
C'mon, Cliff. I leave you with this easy stuff and..... Kevin it can be done, but in my 'piñon, 'taint wohth the risk. The pressure of the valve springs can move the cams rather suddenly. You'll see when you do it. If you could truly pinch the pulleys in place and had your crank marked it's a go, but you still have the issue of belt tension. I've seen the video and if the socket fit perfectly, I can't see how you'd get off.
The first time is a little daunting, but I think it's still the best way.
The first time is a little daunting, but I think it's still the best way.
Whatever I suggest here should be given ample time for a moderator to delicately correct. I apologize in advance.
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
- BikeMaine
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Re: QUESTION about timing belts
I've seen the downside of losing your spot changing timing belts. It cost the guy both heads. There is usually a reason for a procedure and it's easy to have confidence when you follow it. Double check, I like to rotate the motor a turn and readjust the left side tensioner so both sides are tensioned against the valve spring.
78 GL 1000, 70 CB750 sandcast, 70 CB836 hot rod, 1124cc 750 dragbike resto project.
You don't need a weatherman to know which way the wind blows.
You don't need a weatherman to know which way the wind blows.
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