« previous next »
Pages: [1]   Go Down

Author Topic: Valve spring tool to remove valve spring with engine in frame  (Read 2200 times)

0 Members and 1 Guest are viewing this topic.

Offline Craig Sharp

  • Full Member
  • *
  • Posts: 1
Valve spring tool to remove valve spring with engine in frame
« on: June 17, 2019, 02:59:44 PM »
Has anyone made a tool for removing the valve springs with the engine in frame? Both lower frame tubes are removed and compressed air will be in the cylinder.

Thanks in advance.

C#
Logged

Offline jgger

  • Master
  • *****
  • Posts: 2,415
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #1 on: June 17, 2019, 08:08:07 PM »
^^^^+1 That is the BEST way to do it without removing the head. Just remember to leave a long enough piece hanging out of the plug hole to pull the rope back out. (Sorry, I had to state the obvious) ;)
Logged
"The SOHC4 uses a computer located about 2-3 ft above the seat.  Those sometimes need additional programming." -stolen from  Two Tired

The difference between an ass kisser and brown noser is merely depth perception.  Stolen from RAFster122s

Offline flatlander

  • Old Timer
  • ******
  • Posts: 2,588
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #2 on: June 17, 2019, 11:27:56 PM »
yes that will work.
then if you wonder how to get them back on... you can make yourself a contraption like this:



from these parts:



- piece of tube, cut out to give access to the keepers
- something as a lever (tyre iron in my case)
- something to be used as a fulcrum for the lever
- 6mm bolt to fix fulcrum to head
- piece of rope to hold fulcrum down
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 21,224
  • Saver of unloved motorcycles.
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #3 on: June 19, 2019, 06:52:28 PM »
 Air works fine except it wants to turn the motor sometimes, I'm thinking something like a pickle fork with a pivot off the rocker shaft.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Medyo Bastos

  • Master
  • *****
  • Posts: 1,644
  • Gusto mo titi ko?
    • project
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #4 on: June 19, 2019, 08:12:35 PM »
I have one that attaches on the rocker arm pivots; a length of rope in the combustion chamber and voila! I will look for it under my bed to get you pics


Sent from my iPhone using Tapatalk
Logged

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 16,184
  • Bike almost back to the 70's 2015
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #5 on: June 19, 2019, 09:10:41 PM »
Why not lifting the head? Leaking seals?
Easy with frame kit.
The seats might need a cut or valves to be lapped.
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline turboguzzi

  • Old Timer
  • ******
  • Posts: 4,105
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #6 on: June 20, 2019, 04:48:36 AM »
once you had the rope inside, use this

https://www.ebay.it/itm/141984046475

being a bit if an el cheapo, built myself a similar tool. works a treat!

Logged

Offline flatlander

  • Old Timer
  • ******
  • Posts: 2,588
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #7 on: June 20, 2019, 04:51:59 AM »
yes also the stuff i showed above is an awful lot cheaper... just cobbled together from stuff that's been lying around :)
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 21,224
  • Saver of unloved motorcycles.
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #8 on: June 20, 2019, 08:52:24 AM »
 For insertion into the plug hole, I've also used a quality silicone jacket plug wire. It pushes easier. My big block chevy uses a spring compressor that bolts down and screws over the retainer for install/removal.
 
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Medyo Bastos

  • Master
  • *****
  • Posts: 1,644
  • Gusto mo titi ko?
    • project
Re: Valve spring tool to remove valve spring with engine in frame
« Reply #9 on: June 20, 2019, 02:37:14 PM »
Quote from: Medyo Bastos on June 19, 2019, 08:12:35 PM
I have one that attaches on the rocker arm pivots; a length of rope in the combustion chamber and voila! I will look for it under my bed to get you pics


Sent from my iPhone using Tapatalk







Sent from my iPhone using Tapatalk
Logged
Pages: [1]   Go Up
« previous next »