On 08/02/2017 09:41 AM, Stuart Stevenson wrote:
I also trust boring rather than honing for sizing the block for the sleeve.
Rounder, straighter hole.
I would get some dry ice and alcohol to help install the sleeve.
Submerge the dry ice in alcohol and place the sleeve into the mix. I used
liquid nitrogen the last time I installed a sleeve.
Use gloves to handle the sleeve after it is in the mix.
You will have a little more than 4 seconds to install the sleeve using the
colder dry ice or nitrogen. With the colder temperature I find the longer
install time a comfort as I get rattled trying to install the sleeve very
quickly. Everything just flows smoother.
Be sure to hold the sleeve in position until it expands sufficiently. I let
the sleeve go one time and it slid part way out (I think I pulled the
sleeve as it had frozen to the glove) and then reached the expanded
diameter. I had to bore the sleeve out. Worked ok but not necessary if you
take care the first time.
Heating the block is a good idea also.
Liquid nitrogen at approximately ~ -320F will shrink a two inch diameter
steel shaft almost 0.006in.
Dry Ice is not as cold (~ -120F) but will be a lot better than water ice.
If you want the sleeve to reach the bottom of the block bore you should
turn diameter on the bottom of the sleeve to fit against the shoulder you
leave on the bottom of the bore.
On Wed, Aug 2, 2017 at 11:17 AM, andy pugh <bodge...@gmail.com> wrote:
On 2 August 2017 at 16:22, Kirk Wallace <kwall...@wallacecompany.com>
wrote:
Honing the hole for the sleeve was part of my plan just because I'm
comfortable with getting the size spot-on with a hone rather than a
boring
head.
I would expect to get it right with a boring head. And I _have_ got it
right with a HBM. But then, if that can't get a bore to the right
size, what can?
I sleeved and re-bored my Yamaha FJ1100 (to 1380cc) many years ago
using my dad's Kearns S-type. https://goo.gl/photos/CuLwLrTX6CPZFkQN8
I've always used dry ice/acetone for cooling baths. However, get it on
your skin and it will burn
OTOH LN2 forms a vapor barrier, it will itch but not burn. Much like
the quench phase of steel into water.
Denatured alcohol is rather uncertain in composition. The denaturing
agent is always picked as something not
easy to separate from the EtOH. My first choice in denatured would be 3A ...
Dave
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916
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