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[Andy B]

......
Adventurous idea... :exclamation
Doubt if compressed air is good enough to withstand pressure of spring removal and replacement... :question


 :-/

That's why i like the idea of the cord/string down the bore idea better .... not that I've ever tried the compressed air set up.

 What if you end up with a dropped valve...  

You're taking the heads off anyway!  

[M0T0RVATE]

Its a standard and proven method plus it works well.

I should havd added, use a depp 10mm socket and smack the top fot eh spring/collet assembly first to unstick the upper spring mount from the collets.

Interesting, must admit i never heard of it though...

 

[M0T0RVATE]

......
Adventurous idea... :exclamation
Doubt if compressed air is good enough to withstand pressure of spring removal and replacement... :question


 :-/

That's why i like the idea of the cord/string down the bore idea better .... not that I've ever tried the compressed air set up.

 What if you end up with a dropped valve...  

You're taking the heads off anyway!  

 


Personally I prefer the "old skool" take off head, replace oil seals, grind in valves...

[Andy B]

.....
Personally I prefer the "old skool" take off head, replace oil seals, grind in valves...

'old skool' = 30 000 miles then!        

[Roger]

Hi all
regarding doing the seals in situ, we have made an adaptor for screwing into the plug hole to put the cylinder under compression, the piston will be turned up to the top by hand and kept under pressure, if a valve was to drop, hopefully the piston wont let it, and we can retreve it. If not then it will mean the head comes off.As regarding the tool to remove the valve spring were going to call in at Vx to see if they have a tool for this if not we'll make a service tool to do the job. thanks for your replies , and will let you know how it goes
regards- martin