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Lightest tappet

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Post Fri Jun 08, 2012 10:43 am

Posts: 140
Location: USA
Is the three holed ,thin walled roller tappet used in KHK Models the lightest tappet made ? If not what is the lighest weight roller tappet made that can be used in a flathead ? Thanks. :D :D

Post Fri Jun 08, 2012 10:10 pm

Posts: 2687
Location: Los Angeles, CA
Are you also going to have the lightest rider on the bike? :D

Post Sat Jun 09, 2012 4:21 am

Posts: 140
Location: USA
You know Chris you touched on really a funny point , it does seem futile to have a lightened chrome moly frame ,titanium this and that ,everything drilled and lightend and then top it off with an over 200 pounder (and I am sadly understating the poundage in my case) . Kinda like putting a watermellon on top of a banana split instead of a cherry . Yes,in the event I try to set a record for the fastest flathead in the history of the known universe I will definitely not have my elephant sized butt in the saddle . Thanks again for your humor ,we could use more of this in our lives from time to time . Now back to the technical issue at hand , is there a lighter weight roller tappet than the thin walled three holed KHK tappet ? :D :D

Post Sat Jun 09, 2012 8:27 am

Posts: 87
I know the subject is lifters, but extending it to other valve train components, I'm looking at some KHK valve train components on hand and find the weights as follows - lifters ~ 82 g, and IN and EX valves ~ 117 g and ~ 112 g respectively. I can't remember what you're using for valves, but when you go for the FH speed record of the universe, perhaps it might be easier and a more significant weight savings to go with titanium valves than it would be with a lifter change.

Post Sat Jun 09, 2012 11:53 am

Posts: 767
Location: CA USA
Search the archives. Some years back one of the folks actually found an HD lifter that was lighter than the KHK lifter by a few grams. I think it was a late HD servicar part number, but I don't recall for sure.

Post Wed Jun 13, 2012 7:15 pm

Posts: 140
Location: USA
Thanks for the responses I'll use the ironhead sportster tappets and drill them myself. :D :D

Post Mon Feb 25, 2013 3:35 pm
jib

Posts: 575
Location: devon,england
and you could try out these blanks for size

http://www.ebay.co.uk/itm/Titanium-Conn ... 3e5&_uhb=1

:D ,regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Thu Sep 25, 2014 3:35 pm

Posts: 232
Location: Norway
WZ507 wrote:
I know the subject is lifters, but extending it to other valve train components, I'm looking at some KHK valve train components on hand and find the weights as follows - lifters ~ 82 g, and IN and EX valves ~ 117 g and ~ 112 g respectively. I can't remember what you're using for valves, but when you go for the FH speed record of the universe, perhaps it might be easier and a more significant weight savings to go with titanium valves than it would be with a lifter change.


WZ507, the weight of the KHK lifters. is that with or without the adjusters please?
Also, do you happen to know the weight and possibly have a picture of the 18220-53R drilled retainers for early KR and 53KK?
Malte.


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