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Valve service interval ??

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Old Jun 15, 2021 | 04:05 AM
  #11  
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Originally Posted by Tommy C
The bike has hydraulic lifters so there is no service interval. However, it's considered good practice to replace the liters every 35,000 miles or so, as they are a maintenance item.
i dunno about that, mine have lasted 160,000 miles running Syn 3 since new.
I had a Yamaha FJR 1300 and had to have the valves adjusted, that was enough of that “modern liquid cooled” technology for me. Had to disassemble the bike to adjust the valves, upgrade the cam chain tensioner and grease the spline on the “maintenance free” driveshaft.
 
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Old Jun 15, 2021 | 04:49 AM
  #12  
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Originally Posted by Rob406

Just so we're clear. There is no valve service interval on a stock 103 or an 88 ?
Just to be clear no adjustment on H-D Big Twins since 1948
Pans/Shovels/Evo`s/Twin Cams/M-8`s
 
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Old Jun 15, 2021 | 05:02 AM
  #13  
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Originally Posted by MRFREEZE57
correct me if wrong but I have heard that a lifter from a small block Chevy will work in a Harley.
Dimensionally the same as the Chevy roller lifters, but the internals are different. Basically the Chevy lifters are designed to run in a system with higher oil pressure. S&S has some information about the differences. Naysayers discount the test by S&S saying that S&S is just trying to sell you their lifters. People can form their own opinions. I'll stick with lifters designed for my bikes.


I have also heard a lot of people say that the lifters should be replaced at 25,000 miles or thereabouts. I think that comes from some years ago when Harley had some lifter problems. I haven't had any lifter issues with my bikes, although I have S&S lifters in 2 of then now after cam swaps. Haven't heard of low mileage lifter failures in recent memory, but I am sure someone has experienced trouble. Regardless, I don't know of any kind of chronic problem with current Harley lifters.






 
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Old Jun 15, 2021 | 06:32 AM
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just to be aware, the lifters used in the m8 are the same lifters.
 
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Old Jun 15, 2021 | 07:38 AM
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Originally Posted by skratch
just to be aware, the lifters used in the m8 are the same lifters.
The same lifters as what?
 
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Old Jun 15, 2021 | 08:24 AM
  #16  
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Originally Posted by Uncle G.
The same lifters as what?
I'm assuming he means Twin Cams,

Jim
 
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Old Jun 15, 2021 | 09:34 AM
  #17  
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Originally Posted by eighteight
Just to be clear no adjustment on H-D Big Twins since 1948
Pans/Shovels/Evo`s/Twin Cams/M-8`s
On the bikes with solid lifters, we checked and adjusted the valve train tension with the adjustable pushrods. If you knew what you were doing, it was no big deal - just routine maintenance.
 
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Old Jun 15, 2021 | 10:18 AM
  #18  
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I installed adjustable pushrods in my wife's Dyna when i converted the tensioners from mechanical to hydraulic.
There really isn't much service or adjustment required though. At this point, the biggest benefit is being able to replace an O-ring without removing the heads.
I removed the stock pushrods with a bolt cutter.
If you and your buddy's bikes are still stock, there's no adjustment.
 
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Old Jun 15, 2021 | 10:30 AM
  #19  
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[QUOTE=RHPAW;19995380]I installed adjustable pushrods in my wife's Dyna when i converted the tensioners from mechanical to hydraulic.
There really isn't much service or adjustment required though. /QUOTE]

That is because you retained the hydraulic lifters, stock Iron XL`s and Big Twins CONVERTED to "solids" required periodic adjustment depending on cam grind and how hard you flogged it.
 
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Old Jun 15, 2021 | 11:21 AM
  #20  
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Originally Posted by Uncle G.
The same lifters as what?
Originally Posted by roussfam
I'm assuming he means Twin Cams,

Jim
the same lifters that harley has been using since 1999.
 
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