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Hi John:
Great question.
I recognized that that grinding off the the valve reliefs would be a potential
issue. Here are some liner specs from the outside in.
The total width of the liner is 4.105" (not including flat portion).
The ID of the start of Flat is 3.920"
The OD of the groove is at 3.862".
The ID of the groove is 3.822"
For a 87mm (3.425) bore this leaves 0.397" ( 3.822- 3.425) space from the edge
of the bore circumference to the ID edge of the groove.
For a 89mm bore (3.504") this leaves 0.318". (3.822-3.504)
In my estimation this should leave enough space to make a reasonable relief for
the valve. I suspect you could get pretty close the inner most portion of the
ring groove and be safe.
Don"t forget the larger the relief the closer the top ring gets to the point in
the liner barrel where It could be at jeopardy for blow-by. Give or take top
rings are .230" below the top of the piston . Another concern is loss of CR as
the volume removed from the liner has just been added to the combustion chamber
total volume.
Hope this helps.
MDunst
Headgasket.com
626.358.1616 T
626.628.3777 F
Triple R Munitions, Inc
626.201.9471 T
FFL 6,7 SOT 2
-----Original Message-----
From: John Styduhar <johnstydo@gmail.com>
To: Mordy Dunst <gasket.works@gte.net>
Cc: Triumph 'Friends of Triumph <fot@autox.team.net>
Sent: Sun, Mar 6, 2016 6:41 am
Subject: Re: [Fot] Different Tr3/4 sleeve design
Hi Mordy, I like your design and the amount of material you have at the top of
the liner in case you want to shorten the liners. I wonder if the wire groove
would be interfered with after you cut the intake valve relief in the top of
the liner. What sizes are you going to make?
On Sat, Mar 5, 2016 at 4:34 PM, Mordy Dunst <gasket.works@gte.net> wrote:
I've been thinking about the tr tractor motor sleeve/liner for a while
-especially after a liner cracked during a race.
Went to the drawing board (autcad) and put some of my thoughts in a digital cad
format.
The owner of LA sleeve cleaned up my drawing a bit and I am glad to see that
the project is completed.
Some comments - some surprising.
1) each liner is about 200 gm lighter than stock. The liner is shortened to be
the same Dimension as the depth of the pocket in the block.
2) it is substantially stiffer than stock and holds machining tolerances much
better.
3) the .040" groove is .035" deep to accept a .040" wire. (Square wire or round)
4) the wire groove on the surface may not need a wire -as the edges on either
side in the groove impart an increased unit surface pressure on the gasket.
The gasket will dimple into this recess and lock.
5) there is only a single flat on opposing liners. My understanding of having
multiple flats was to rotate and hone the liners during engine/tractor
rebuilds.
6) cooling efficiency not tested.
MDunst
Headgasket.com
626.358.1616 T
626.628.3777 F
Triple R Munitions, Inc
626.201.9471 T
FFL 6,7 SOT 2
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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<font color='black' size='2' face='Arial, Helvetica, sans-serif'>Hi <font
size="2">John: <br>
<br>
Great question.<br>
<br>
I recognized that that grinding off the the valve reliefs would be a potential
issue. Here are some liner specs from the outside in. </font><br>
<font size="2"><font size="2">The total width of the liner is 4.105" (not
including flat portion). </font></font><br>
<font size="2"><font size="2"><font size="2">The ID of the start of Flat is
3.920"</font></font><br>
The OD of the groove is at 3.862". </font><br>
<font size="2"><font size="2">The ID of the groove is 3.822"</font><br>
<br>
<br>
For a 87mm (3.425) bore this leaves 0.397" ( 3.822- 3.425) space from the edge
of the bore circumference to the ID edge of the groove.<br>
<br>
For a 89mm bore (3.504") this leaves 0.318". (3.822-3.504)<br>
<br>
In my estimation this should leave enough space to make a reasonable relief for
the valve. I suspect you could get pretty close the inner most
portion of the ring groove and be safe. <br>
<br>
Don"t forget the larger the relief the closer the top ring gets to the point in
the liner barrel where It could be at jeopardy for blow-by</font><font
size="2"><font size="2">. Give or take top rings are .230" below the top
of the piston</font> . Another concern is loss of CR as the volume removed from
the liner has just been added to the combustion chamber total volume.<br>
<br>
Hope this helps.<br>
<br>
<br>
<br>
<br>
</font>
<div style="clear:both">MDunst<br>
Headgasket.com<br>
626.358.1616 T<br>
626.628.3777 F<br>
Triple R Munitions, Inc<br>
626.201.9471 T<br>
FFL 6,7 SOT 2<br>
<br>
<br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----<br>
From: John Styduhar <johnstydo@gmail.com><br>
To: Mordy Dunst <gasket.works@gte.net><br>
Cc: Triumph 'Friends of Triumph <fot@autox.team.net><br>
Sent: Sun, Mar 6, 2016 6:41 am<br>
Subject: Re: [Fot] Different Tr3/4 sleeve design<br>
<br>
<div id="AOLMsgPart_2_72d93321-1452-462b-8513-ea9bddfd957e">
<div class="aolReplacedBody">
<div dir="ltr">
<div class="gmail_default" style="font-size:small">Hi Mordy, I like your design
and the amount of material you have at the top of the liner in case you want to
shorten the liners. I wonder if the wire groove would be interfered with after
you cut the intake valve relief in the top of the liner. What sizes are
you going to make?</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Mar 5, 2016 at 4:34 PM, Mordy Dunst <span
dir="ltr"><<a target="_blank"
href="mailto:gasket.works@gte.net";>gasket.works@gte.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">I've been thinking about the tr tractor motor
sleeve/liner for a while -especially after a liner cracked during a
race. <br>
Went to the drawing board (autcad) and put some of my thoughts in a digital
cad format.
<div>The owner of LA sleeve cleaned up my drawing a bit and I am glad to
see that the project is completed.</div>
<div><br>
</div>
<div>Some comments - some surprising.</div>
<div>1) each liner is about 200 gm lighter than stock. The liner is shortened
to be the same Dimension as the depth of the pocket in the
block. <br>
2) it is substantially stiffer than stock and holds machining tolerances
much better.</div>
<div>3) the .040" groove is .035" deep to accept a .040" wire. (Square wire or
round)</div>
<div>4) the wire groove on the surface may not need a wire -as the
edges on either side in the groove impart an increased
unit surface pressure on the gasket. The gasket will dimple into this
recess and lock. </div>
<div>5) there is only a single flat on opposing liners. My understanding
of having multiple flats was to rotate and hone the liners during
engine/tractor rebuilds. </div>
<div>6) cooling efficiency not tested.</div>
<div><br>
</div>
<div><br>
<div>MDunst<br>
<a target="_blank" href="http://headgasket.com";>Headgasket.com</a><br>
<a target="_blank" href="tel:626.358.1616">626.358.1616</a> T<br>
<a target="_blank" href="tel:626.628.3777">626.628.3777</a> F<br>
Triple R Munitions, Inc<br>
<a target="_blank" href="tel:626.201.9471">626.201.9471</a> T<br>
FFL 6,7 SOT 2<br>
<br>
<br>
</div>
</div>
<br>
_______________________________________________<br>
<a target="_blank" href="mailto:fot@autox.team.net";>fot@autox.team.net</a><br>
<br>
<a rel="noreferrer" target="_blank"
href="http://www.fot-racing.com";>http://www.fot-racing.com</a><br>
<br>
Archive: <a rel="noreferrer" target="_blank"
href="http://www.team.net/archive";>http://www.team.net/archive</a><br>
Forums: <a rel="noreferrer" target="_blank"
href="http://www.team.net/forums";>http://www.team.net/forums</a><br>
<br>
<br>
<br>
</blockquote></div>
<br>
</div>
</div>
</div>
</div>
</font>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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