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Interesting, Chris:
My machine shop said that .002=E2=80=9D run out at the center main, with the=
crank supported and spun on numbers 1 and 3 was a sign that it was developi=
ng high levels of internal stress (work hardening) and that it should be ret=
ired. They aim for 0 run out under these conditions. Based on what you=E2=80=
=99ve said, I wonder if they are being overly cautious. As they do not grind=
cranks themselves ( only polishing and balancing), they had little to gain f=
rom that diagnosis.
Thanks for the input.
Sent from my iPhone
> On Nov 24, 2019, at 9:26 AM, Tony Drews <tony@tonydrews.com> wrote:
>=20
> =EF=BB=BF
> Wow! It's very nicely done. Certainly overkill.
>=20
> Regards, Tony
>=20
>> On 11/23/2019 9:11 PM, Phil Gott wrote:
>> Here are some photos:
>> <image0.jpeg>
>>=20
>> <image1.jpeg>
>>=20
>> =20
>> <image2.jpeg>
>>=20
>>=20
>> Sent from my iPhone
>>=20
>>> On Nov 23, 2019, at 12:23 PM, Tony Drews <tony@tonydrews.com> wrote:
>>>=20
>>> =EF=BB=BF
>>> I agree, that sounds like overkill. Mine only requires the top of the c=
ap to be machined flat, no other block mods.
>>>=20
>>> Regards, Tony
>>>=20
>>> On 11/23/2019 5:42 AM, Phil Gott wrote:
>>>> Thanks again, Tony:
>>>> The one we have, built by the late Bill Throop, in addition to reinfor=
cing the cap itself, has the block machined internally to accept the sides o=
f a strap, then the strap is cross bolted from the sides, through the block=
from outside. I=E2=80=99m wondering if this is a bit of overkill. Based on=
your recommendation, it seems to be.
>>>> Maybe I can send some pictures later today, as we are pulling the engin=
e today for other work.
>>>> Phil
>>>>=20
>>>> Sent from my iPhone
>>>>=20
>>>>> On Nov 22, 2019, at 10:56 PM, Tony Drews <tony@tonydrews.com> wrote:
>>>>>=20
>>>>> =EF=BB=BF
>>>>> I run that setup, it was an uncle jack trick. Here's what he wrote ab=
out that (on my engine building tips page):
>>>>>=20
>>>>> "I also like to strap the center main to add rigidity to the bottom en=
d. To do this, mill off the cast face of the main flush with the surfaces f=
or the head bolts. Get a front strap for a Chevy 400 block. You must enlarge=
the holes in the strap and you must use longer bolts. Some builders feel=
that this is totally unnecessary, but since starting to do this, I have nev=
er had a main bearing deteriorate faster than a rod bearing, which is someth=
ing that happens more frequently than you would expect."
>>>>>=20
>>>>> Regards, Tony Drews
>>>>>=20
>>>>> On 11/22/2019 3:58 PM, Phil Gott via Fot wrote:
>>>>>> Has anyone seen the need to add extra support to the center main on t=
he TR wet sleeve engine? We have an engine that has a steel bridge cross-bol=
ted underneath and supporting the center main cap. Is this needed? Just took=
3 factory cranks to the machine shop and all three were bent about .002 in (=
.002 run out at center main when supported on first and last mains.) Two of t=
hese were raced, the third was removed from a tired street engine. note: Non=
e of these cranks came out of the engine with extra support at the center.
>>>>>> Curious as to the need for the extra support.
>>>>>> Thanks,
>>>>>> Phil Gott
>>>>>> 114 TR4A
>>>>>>=20
>>>>>> Sent from my iPhone
>>>>>> _______________________________________________
>>>>>> fot@autox.team.net
>>>>>>=20
>>>>>> http://www.fot-racing.com
>>>>>>=20
>>>>>> Donate: http://www.team.net/donate.html
>>>>>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/=
fot
>>>>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/tony@to=
nydrews.com
>>>>>>=20
>>>>>>=20
>>>>>>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Interesting, Chris:<div>My machine shop sai=
d that .002=E2=80=9D run out at the center main, with the crank supported an=
d spun on numbers 1 and 3 was a sign that it was developing high levels of i=
nternal stress (work hardening) and that it should be retired. They aim for 0=
run out under these conditions. Based on what you=E2=80=99ve said, I wonder=
if they are being overly cautious. As they do not grind cranks themselves (=
only polishing and balancing), they had little to gain from that diagnosis.=
<br>Thanks for the input.<br><div dir=3D"ltr">Sent from my iPhone</div><div d=
ir=3D"ltr"><br><blockquote type=3D"cite">On Nov 24, 2019, at 9:26 AM, Tony D=
rews <tony@tonydrews.com> wrote:<br><br></blockquote></div><blockquote=
type=3D"cite"><div dir=3D"ltr">=EF=BB=BF
=20
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DUTF-8"=
>
=20
=20
<p>Wow! It's very nicely done. Certainly overkill.</p>
<p>Regards, Tony<br>
</p>
<div class=3D"moz-cite-prefix">On 11/23/2019 9:11 PM, Phil Gott wrote:<b=
r>
</div>
<blockquote type=3D"cite" cite=3D"mid:C6E1215C-1307-4104-B5FE-69125543F1=
A7@aol.com">
<meta http-equiv=3D"content-type" content=3D"text/html; charset=3DUTF-=
8">
Here are some photos:
<div><div><image0.jpeg></div><br>
<div><image1.jpeg></div><br>
<div dir=3D"ltr"> <div><image2.jpeg></div></div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Sent from my iPhone</div>
<div dir=3D"ltr"><br>
<blockquote type=3D"cite">On Nov 23, 2019, at 12:23 PM, Tony
Drews <a class=3D"moz-txt-link-rfc2396E" href=3D"mailto:tony@ton=
ydrews.com"><tony@tonydrews.com></a> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">=EF=BB=BF
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3DUTF-8">
<p>I agree, that sounds like overkill. Mine only requires
the top of the cap to be machined flat, no other block
mods.</p>
<p>Regards, Tony<br>
</p>
<div class=3D"moz-cite-prefix">On 11/23/2019 5:42 AM, Phil
Gott wrote:<br>
</div>
<blockquote type=3D"cite" cite=3D"mid:E2C8C83A-88A2-4591-839F-56=
8483160AB8@aol.com">
<meta http-equiv=3D"content-type" content=3D"text/html;
charset=3DUTF-8">
Thanks again, Tony:
<div>The one we have, built by the late Bill Throop, in
addition to reinforcing the cap itself, has the block
machined internally to accept the sides of a strap, then
the strap is cross bolted from the sides, through the
block from outside. I=E2=80=99m wondering if this is a=
bit of
overkill. Based on your recommendation, it seems to be.</div=
>
<div>Maybe I can send some pictures later today, as we are
pulling the engine today for other work.</div>
<div>Phil<br>
<br>
<div dir=3D"ltr">Sent from my iPhone</div>
<div dir=3D"ltr"><br>
<blockquote type=3D"cite">On Nov 22, 2019, at 10:56 PM,
Tony Drews <a class=3D"moz-txt-link-rfc2396E" href=3D"ma=
ilto:tony@tonydrews.com" moz-do-not-send=3D"true"><tony@tonydrews.com>=
</a>
wrote:<br>
<br>
</blockquote>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">=EF=BB=BF
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3DUTF-8">
<p>I run that setup, it was an uncle jack trick.
Here's what he wrote about that (on my engine
building tips page):</p>
<p><span style=3D"color: rgb(0, 0, 0); font-family:
Tahoma, Helvetica, Arial, sans-serif; font-size:
medium; font-style: normal;
font-variant-ligatures: normal;
font-variant-caps: normal; font-weight: 400;
letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing:
0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
text-decoration-style: initial;
text-decoration-color: initial; display: inline
!important; float: none;">"I also like to strap
the center main to add rigidity to the bottom
end. To do this, mill off the cast face of the=
main flush with the surfaces for the head bolts.
Get a front strap for a Chevy 400 block. You
must enlarge the holes in the strap and you
must use longer bolts. Some builders fee=
l that
this is totally unnecessary, but since starting
to do this, I have never had a main bearing
deteriorate faster than a rod bearing, which is
something that happens more frequently than you
would expect."</span></p>
<div class=3D"moz-cite-prefix">Regards, Tony Drews<br>
</div>
<div class=3D"moz-cite-prefix"><br>
</div>
<div class=3D"moz-cite-prefix">On 11/22/2019 3:58 PM,
Phil Gott via Fot wrote:<br>
</div>
<blockquote type=3D"cite" cite=3D"mid:9832B3FA-B6DB-40A2=
-BD22-81071EA4BC5A@aol.com">
<pre class=3D"moz-quote-pre" wrap=3D"">Has anyone seen=
the need to add extra support to the center main on the TR wet sleeve engin=
e? We have an engine that has a steel bridge cross-bolted underneath and sup=
porting the center main cap. Is this needed? Just took 3 factory cranks to t=
he machine shop and all three were bent about .002 in (.002 run out at cente=
r main when supported on first and last mains.) Two of these were raced, the=
third was removed from a tired street engine. note: None of these cranks ca=
me out of the engine with extra support at the center.
Curious as to the need for the extra support.
Thanks,
Phil Gott
114 TR4A
Sent from my iPhone
_______________________________________________
<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:fot@autox.team.net"; moz=
-do-not-send=3D"true">fot@autox.team.net</a>
<a class=3D"moz-txt-link-freetext" href=3D"http://www.fot-racing.com"; moz-do=
-not-send=3D"true">http://www.fot-racing.com</a>
e.html" moz-do-not-send=3D"true">http://www.team.net/donate.html</a>
Archive: <a class=3D"moz-txt-link-freetext" href=3D"http://autox.team.net/ar=
chive" moz-do-not-send=3D"true">http://autox.team.net/archive</a> <a class=3D=
"moz-txt-link-freetext" href=3D"http://www.team.net/pipermail/fot"; moz-do-no=
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</pre>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
=20
</div></blockquote></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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