Valve shim tool

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Valve shim tool

Triumph Trophy mailing list
I know that there are homemade valve spring compressors and there's the tool that Triumph lists.
But I've been thinking - dangerous thing to do...
It seems like it should be fairly easy to make a valve spring compressor, given the right motivation and tools...
Here's the idea:
The valve spring bucket is wider than the cam lobe.  The cam lobe has a few mm on either side of it.
So, what if I made a tool that consists of 2 narrow (1 cm wide or less) lobes that clamp on either side of the cam lobe and extend the cam duration for 1/4 turn?  This would be enough to swap out shims easily enough and would rotate out of the way for easy removal before the piston interferes with the valve.  It would only work for engines with shim-on-bucket valvetrains, but that's what we have.
I guess there's another part that that question: What if I had the milling equipment needed to make those lobes?
It seems like they would be a lot easier to use than the Triumph tool, and safer for the engine, too.  You'd never need to rotate the engine backwards.  
Just a thought...
Dave
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Re: Valve shim tool

Triumph Trophy mailing list
Hi Dave, Rotate the engine backward... NEVER! Don't even think about it!  If you rotated the crankshaft just a little bit to far, too bad, don't go backward. Greg Andrews

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Re: Valve shim tool

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Hi Greg,
I agree.  That's part of what got me thinking about this tool design.  I was trying to come up with a tool that would allow compressing the valve springs without the bolt-on tool.  To me, the tool seems a bit iffy and difficult to use.  It seems like it would be better to have a tool that just keeps the valve depressed a little bit longer than the cam lobe would otherwise compress it.
Dave
 
      From: "[hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Friday, July 31, 2015 1:52 PM
 Subject: [TriumphTrophy] Re: Valve shim tool
   
    Hi Dave, Rotate the engine backward... NEVER! Don't even think about it! If you rotated the crankshaft just a little bit to far, too bad, don't go backward.Greg Andrews  #yiv3590716290 #yiv3590716290 -- #yiv3590716290ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv3590716290 #yiv3590716290ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv3590716290 #yiv3590716290ygrp-mkp #yiv3590716290hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv3590716290 #yiv3590716290ygrp-mkp #yiv3590716290ads {margin-bottom:10px;}#yiv3590716290 #yiv3590716290ygrp-mkp .yiv3590716290ad {padding:0 0;}#yiv3590716290 #yiv3590716290ygrp-mkp .yiv3590716290ad p {margin:0;}#yiv3590716290 #yiv3590716290ygrp-mkp .yiv3590716290ad a {color:#0000ff;text-decoration:none;}#yiv3590716290 #yiv3590716290ygrp-sponsor #yiv3590716290ygrp-lc {font-family:Arial;}#yiv3590716290 #yiv3590716290ygrp-sponsor #yiv3590716290ygrp-lc #yiv3590716290hd {margin:10px 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Re: Valve shim tool

Triumph Trophy mailing list
In reply to this post by Triumph Trophy mailing list

   
David:  
Have you ever used the Triumph tool?  I have.  There is nothing IFFY about it.  Unless a Gorilla grabs the wrench with a 4 foot breaker bar on it and over torques a too long fastener.
The tool is easy to use.
BTW, you don't need anything but a feeler gage to check clearances.  Only to replace the 25mm dia shims.  You'll have a harder time finding the shims you need.
Bob Clark01 Sunset Red Trophy 120096 BRG Thunderbird 900Jacksonville, FL


Sent from my Verizon Wireless 4G LTE smartphone

-------- Original message --------
From: "David Webb [hidden email] [TriumphTrophy]" <[hidden email]>
Date: 07/31/2015  1:58 PM  (GMT-05:00)
To: [hidden email]
Subject: Re: [TriumphTrophy] Re: Valve shim tool














 

 



 


   
     
     
      Hi Greg,
I agree.  That's part of what got me thinking about this tool design.  I was trying to come up with a tool that would allow compressing the valve springs without the bolt-on tool.  To me, the tool seems a bit iffy and difficult to use.  It seems like it would be better to have a tool that just keeps the valve depressed a little bit longer than the cam lobe would otherwise compress it.
Dave
         From: "[hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Friday, July 31, 2015 1:52 PM
 Subject: [TriumphTrophy] Re: Valve shim tool
   

 



 


   
     
     
      Hi Dave, Rotate the engine backward... NEVER! Don't even think about it! If you rotated the crankshaft just a little bit to far, too bad, don't go backward.Greg Andrews

   
     

   
   




     

   
     

   
   

         
 
 

   
     

   
       
        Posted by: David Webb <[hidden email]>        
     
     

   
     
       
         
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