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Micrometer (to measure shims)
Posted: Mon Aug 21, 2006 1:16 pm
by javaman
Which type should I get ? Saw some cheap ones in Bunnings which is digital and have a resolution of 0.1mm. Is this 'precise' enough?
If not, what brand should I get (and from where) ?
Posted: Mon Aug 21, 2006 1:35 pm
by Stace
Mic's sould at least measure 0.01mm. A 0-25mm Mic will be all you'll need for shim's. Really the only way to go as far as brands is Mititoyo. Try and stay away from digital ones, I have found them to be not as accurate as the normal veriety and see, to be a bit gimicky to me.
Posted: Mon Aug 21, 2006 1:42 pm
by Smitty
Stace wrote:Mic's sould at least measure 0.01mm. A 0-25mm Mic will be all you'll need for shim's. Really the only way to go as far as brands is Mititoyo. Try and stay away from digital ones, I have found them to be not as accurate as the normal veriety and see, to be a bit gimicky to me.
I am with Stace
all my measuring gear (caliper dial gauges etc ) are Mititoyo
...which are not cheap btw
and
measuring shims????
all the shims I have ever seen have their thickness screen printed
on 'em ...so no need for micrometers
Posted: Mon Aug 21, 2006 2:23 pm
by BladeBoy
Smitty wrote:Stace wrote:Mic's sould at least measure 0.01mm. A 0-25mm Mic will be all you'll need for shim's. Really the only way to go as far as brands is Mititoyo. Try and stay away from digital ones, I have found them to be not as accurate as the normal veriety and see, to be a bit gimicky to me.
I am with Stace
all my measuring gear (caliper dial gauges etc ) are Mititoyo
...which are not cheap btw
and
measuring shims????
all the shims I have ever seen have their thickness screen printed
on 'em ...so no need for micrometers
Thats what I thought..
Posted: Mon Aug 21, 2006 2:27 pm
by javaman
Hey that's genius !!! So you think they don't change in thickness (due to wear) ?
Posted: Mon Aug 21, 2006 2:29 pm
by Stace
javaman wrote:Hey that's genius !!! So you think they don't change in thickness (due to wear) ?
Come back of the year to Andi LMAO
Posted: Mon Aug 21, 2006 2:37 pm
by Duane
Isnt it generally the distance between the shim and the valve clearence, rather than the shim that changes? hence you measure the distance between the two at a certain point - and find the correct shim for it ?
Posted: Mon Aug 21, 2006 2:37 pm
by Stace
Duane wrote:Isnt it generally the distance between the shim and the valve clearence, rather than the shim that changes? hence you measure the distance between the two at a certain point - and find the correct shim for it ?
Yes, However shims will wear over time
Posted: Mon Aug 21, 2006 2:40 pm
by Duane
Stace wrote:Duane wrote:Isnt it generally the distance between the shim and the valve clearence, rather than the shim that changes? hence you measure the distance between the two at a certain point - and find the correct shim for it ?
Yes, However shims will wear over time
Shimmy shimmy!!!
Posted: Mon Aug 21, 2006 2:48 pm
by javaman
Damn!! I need a micrometer then
Posted: Mon Aug 21, 2006 3:12 pm
by Smitty
no...
if you think the shim is worn....
buy new ones
Posted: Mon Aug 21, 2006 3:15 pm
by Duane
But you still have to measure the distance of the valve clearence no? to decide what shim to buy, hence you still need the tool.
Posted: Mon Aug 21, 2006 3:31 pm
by javaman
From reading, the process of shims replacement is not as simple as buying a new size shim. As the thickness of the shim will be based on overall condition (determined using a feeler gauge while still installed). Obtaining this number we can get the desired gap if the true thickness of current shim is known
Posted: Mon Aug 21, 2006 3:53 pm
by Rossi
Stop trying to make it more technical than it needs to be.
Shim size printed on 'em is all I've ever gone by as I ain't trying to blueprint the engine
Posted: Mon Aug 21, 2006 4:12 pm
by Smitty
Rossi wrote:Stop trying to make it more technical than it needs to be.
Shim size printed on 'em is all I've ever gone by as I ain't trying to blueprint the engine
rossi ....sez its perfectly.....
