Road Star Forum
Welcome, Guest
Please Login or Register.    Lost Password?
Re:Time to address my valve / lifter rattle
Go to bottom Post Reply Favoured: 0
TOPIC: Re:Time to address my valve / lifter rattle
#1026144
AR. Hillbilly (User)
Platinum Boarder
Posts: 1320
graphgraph
User Offline Click here to see the profile of this user
Time to address my valve / lifter rattle 1 Month, 1 Week ago  
Yes I know these engines are noisy. Not this noisy. This one wasn't liike this before I sucked the nut from my air cleaner into the front cylinder. I removed the front head and had it inspected. All appeared to be ok. I dropped the pushrods on assembly and possibly mixed them up. remember it was only the front two.
When I first tried to start it after reassembly it wouldn't start. I soon discovered I didn't have the pushrod in the exhaust side rockerarm.
I pulled the rocker arms again and got the pushrods back in place and she started and ran perfect. Now after it's warmed up the front/exhaust valve/pushrod makes a lot of noise. Ive changed oil and it didn't help. It has to be very warm before it happens.
I intend to buy 2 new lifters from Yamaha and gut them and put the new guts in the old lifter cases to match wear to the cams. I will buy new pushrods as well. Any other advice would be very welcome.
 
Logged Logged  
 
  The administrator has disabled public write access.
#1026145
davej (User)
Platinum Boarder
Posts: 18115
graphgraph
User Online Now Click here to see the profile of this user
Gender: Male Location: Toledo Ohio Birthdate: 1957-00-00
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
AR. Hillbilly wrote:
Yes I know these engines are noisy. Not this noisy. This one wasn't liike this before I sucked the nut from my air cleaner into the front cylinder. I removed the front head and had it inspected. All appeared to be ok. I dropped the pushrods on assembly and possibly mixed them up. remember it was only the front two.
When I first tried to start it after reassembly it wouldn't start. I soon discovered I didn't have the pushrod in the exhaust side rockerarm.
I pulled the rocker arms again and got the pushrods back in place and she started and ran perfect. Now after it's warmed up the front/exhaust valve/pushrod makes a lot of noise. Ive changed oil and it didn't help. It has to be very warm before it happens.
I intend to buy 2 new lifters from Yamaha and gut them and put the new guts in the old lifter cases to match wear to the cams. I will buy new pushrods as well. Any other advice would be very welcome.


Just my opinion but I wouldn't gut them I would just install them.
 
Logged Logged  
 
dave
  The administrator has disabled public write access.
#1026147
brad_g (User)
Fresh Boarder
Posts: 98
graphgraph
User Offline Click here to see the profile of this user
Gender: Male Location: Solon, IA Birthdate: 1965-07-08
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
davej wrote:
AR. Hillbilly wrote:
Yes I know these engines are noisy. Not this noisy. This one wasn't liike this before I sucked the nut from my air cleaner into the front cylinder. I removed the front head and had it inspected. All appeared to be ok. I dropped the pushrods on assembly and possibly mixed them up. remember it was only the front two.
When I first tried to start it after reassembly it wouldn't start. I soon discovered I didn't have the pushrod in the exhaust side rockerarm.
I pulled the rocker arms again and got the pushrods back in place and she started and ran perfect. Now after it's warmed up the front/exhaust valve/pushrod makes a lot of noise. Ive changed oil and it didn't help. It has to be very warm before it happens.
I intend to buy 2 new lifters from Yamaha and gut them and put the new guts in the old lifter cases to match wear to the cams. I will buy new pushrods as well. Any other advice would be very welcome.


Just my opinion but I wouldn't gut them I would just install them.

+1
 
Logged Logged  
 
  The administrator has disabled public write access.
#1026151
texasscott1 (User)
Two of a kind
Platinum Boarder
Posts: 4484
graphgraph
User Offline Click here to see the profile of this user
Gender: Male
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
How many miles on the cam? Changing plungers between lifters might not work. Those things are a very precise fit and if one is cocked just a little it'll stick and might be impossible to remove - been there.

From what I've seen here new lifters on an old cam don't last very long. It can be tried though just use plenty of cam lube and take it real easy for a few hundred miles. Good luck.
 
Logged Logged  
 


My 99 Standard Test Mule
Scott B.
  The administrator has disabled public write access.
#1026153
jd750ace (User)
Front toward enemy
Platinum Boarder
Posts: 18744
graphgraph
User Offline Click here to see the profile of this user
Gender: Male jd750ace Location: Waxahachie Texas Birthdate: 1969-10-30
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
We discussed this at the meet. If you gut and reassemble you can bench test it with a press before they go in. When I tried to replace mine (flat lifter) it ate my cams. I understand not wanting to risk it if fresh guts will work. If it doesn’t, ya gotta try new ones, just thought this approach might reduce the risk to the cams.
 
Logged Logged  
 
  The administrator has disabled public write access.
#1026157
Questcap (User)
Platinum Boarder
Posts: 7685
graphgraph
User Offline Click here to see the profile of this user
Gender: Male Location: North Attleboro, MA Birthdate: 1954-03-22
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
No problem with a new lifter on an old cam... but, you absolutely have to put plenty of that cam lube break-in goop on the lifter and cam lobe so that they can wear-mate... or they'll be eaten alive!

Also, the noise can easily be an adjustment issue, and since you did not say that you SAW a bad cam lobe or a bad lifter bottom, you might still be able to adjust it out?

Just sayin', but you hafta go with the simplest, easiest first before you go disassembin' and replacin'! Just sayin'!!!
 
Logged Logged  
 
Sig Pic deleted - larger than 450 pixels and 50 kb
  The administrator has disabled public write access.
#1026164
davej (User)
Platinum Boarder
Posts: 18115
graphgraph
User Online Now Click here to see the profile of this user
Gender: Male Location: Toledo Ohio Birthdate: 1957-00-00
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
If you find that you have a worn cam/lifter bottom I have a good 1700 cam and lifter set that I can make you a good deal on. IMO the reason that people think that a new lifter on an cam won't work is that by the time most people try replacing a lifter on an old cam they already waited too long and either the lifter bottom or the cam lope has already been damaged. The damaged old lifter bottom will be what damaged the cam then the new one just finished what was already messed up.
 
Logged Logged  
 
dave
  The administrator has disabled public write access.
#1026165
Father_Pobasturd (User)
VENI VIDI VICI
Platinum Boarder
Posts: 4958
graphgraph
User Offline Click here to see the profile of this user
Gender: Male Location: Buckeye, Arizona Birthdate: 1961-09-11
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
Did you check the pushrod for straightness after you installed it wrong? May have slightly bent it in the process. Myself, in your shoes, new lifters, new pushrods, I would go with new cams at this time as well. Then, if you do that, there should be no issues.


 
Logged Logged  
  The administrator has disabled public write access.
#1026169
davej (User)
Platinum Boarder
Posts: 18115
graphgraph
User Online Now Click here to see the profile of this user
Gender: Male Location: Toledo Ohio Birthdate: 1957-00-00
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
Father_Pobasturd wrote:
Did you check the pushrod for straightness after you installed it wrong? May have slightly bent it in the process. Myself, in your shoes, new lifters, new pushrods, I would go with new cams at this time as well. Then, if you do that, there should be no issues.




New cams are not cheap why would you replace if they don't look damaged and just because of a little noise? I would much rather take a chance that I would have to do the labor twice than just go and spend a bunch of un-needed money on a new cam/lifter. Fact is the cam and lifters aren't even sold as a set. The cams both come as a set and the lifters are part of the valve train and are sold individually and for a reason. Installing a lifter is an easy labor job and a lifter is only a few dollar item.
 
Logged Logged  
 
dave
  The administrator has disabled public write access.
#1026181
AR. Hillbilly (User)
Platinum Boarder
Posts: 1320
graphgraph
User Offline Click here to see the profile of this user
Re:Time to address my valve / lifter rattle 1 Month, 1 Week ago  
This thing runs perfect. It started this right after the head was pulled. I bought a aftermarket head gasket. I've even wondered if maybe it was thicker than the original.
I assume I messed up a lifter or pushrod when I didn't get them in right or just mixed up the pushrods but from what I read they are the same length for the front cylinder on a 1700
 
Logged Logged  
 
  The administrator has disabled public write access.
Go to top Post Reply
Powered by FireBoardget the latest posts directly to your desktop
...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... -->
New Forum Posts




The Road Star Clinic is a collaborative community of riders who archive and publish user contributed technical data about Yamaha Road Star motorcycles.

We also sponsor the creation and support of other community websites similar to our own. Inquiries about availability of a website for your community can be submitted to us via any "Contact Us" option on the Clinic.

Copyright 2003-2007 Road Star Clinic and its respective authors. Road Star Clinic is sponsored by the folks at MLSHomeQuest.com.