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Hi,
=20
most of the TR3/4 blocks are killed by head studs driven in with tools =
instead by running them down by hand.
If the water jacket of the block is not centered properly the wall =
between thread and water gets quite thin.
If the stud is ran in with a tool plus the torque of the head nuts this =
is too much for the cast iron to hold and the block develops cracks at =
the short bolts.
=20
As a repair you can try to bring in a thread sleeve and soldering the =
block with silver solder.
=20
Cheers
Chris
=20
=20
Von: Fot <fot-bounces@autox.team.net> Im Auftrag von Brian Schirano via =
Fot
Gesendet: Sonntag, 22. November 2020 23:12
An: FOT <fot@autox.team.net>
Betreff: [Fot] cracked block
=20
Hey Amichi
Figured as I need to keep busy I'd start stripping a motor to prep as =
back up race motor build this winter. And as I'm razer blading the block =
surface so I could take decking measurements I see a crack in the water =
jacket through the RR head stud hole out to the block exterior. (SOB!!! =
link to pics <https://photos.app.goo.gl/4ArkTSrR3q7Zep2YA> ) I've heard =
of blocks being welded and have some recollection that this stud is a =
weak spot? Don't know anything about the motor/block, was donated to me, =
it did have antifreeze in it when I started working on it, so? =
Interesting how it travels from the jacket through the stud hole and =
continues out to the exterior. Does not appear to run deep, maybe an =
inch or so.
=20
Anywise, looking for comments. I'll be talking to my machinist as well =
and depending on comments and his thoughts will have it cleaned and =
thoroughly inspected and magged.
=20
Lastly, damper dudes or damper doc, or ? for damper rebuilds?
=20
Thanks Friends
Be Careful out there
Brian
--=20
Brian Schirano
585-305-0349
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DDE>Hi,<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DDE><o:p> </o:p></span></p><p class=3DMsoNormal>most of the =
TR3/4 blocks are killed by head studs driven in with tools instead by =
running them down by hand.<o:p></o:p></p><p class=3DMsoNormal>If the =
water jacket of the block is not centered properly the wall between =
thread and water gets quite thin.<o:p></o:p></p><p class=3DMsoNormal>If =
the stud is ran in with a tool plus the torque of the head nuts this is =
too much for the cast iron to hold and the block develops cracks at the =
short bolts.<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal>As a repair you can try to bring in a thread sleeve =
and soldering the block with silver solder.<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal>Cheers<o:p></o:p></p><p =
class=3DMsoNormal>Chris<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DDE>Von:</span></b><span =
lang=3DDE> Fot <fot-bounces@autox.team.net> <b>Im Auftrag von =
</b>Brian Schirano via Fot<br><b>Gesendet:</b> Sonntag, 22. November =
2020 23:12<br><b>An:</b> FOT =
<fot@autox.team.net><br><b>Betreff:</b> [Fot] cracked =
block<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>Hey =
Amichi<o:p></o:p></p><div><p class=3DMsoNormal>Figured as I need to keep =
busy I'd start stripping a motor to prep as back up race motor build =
this winter. And as I'm razer blading the block surface so I could take =
decking measurements I see a crack in the water jacket through the RR =
head stud hole out to the block exterior. (SOB!!! <a =
href=3D"https://photos.app.goo.gl/4ArkTSrR3q7Zep2YA";>link to pics</a>) =
I've heard of blocks being welded and have some recollection that =
this stud is a weak spot? Don't know anything about the motor/block, was =
donated to me, it did have antifreeze in it when I started working on =
it, so? Interesting how it travels from the jacket through the stud hole =
and continues out to the exterior. Does not appear to run deep, maybe an =
inch or so.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Anywise, looking for comments. I'll be talking to my =
machinist as well and depending on comments and his thoughts will =
have it cleaned and thoroughly inspected and =
magged.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Lastly, damper dudes or damper doc, or <u>?</u> for =
damper rebuilds?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Thanks Friends<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Be Careful out there<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Brian<o:p></o:p></p></div><div><p =
class=3DMsoNormal><br clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal>-- <o:p></o:p></p></div><div><div><p =
class=3DMsoNormal>Brian Schirano<o:p></o:p></p><div><p =
class=3DMsoNormal>585-305-0349<o:p></o:p></p></div></div></div></div></di=
v></div></body></html>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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