--===============5417395296110587687==
--000000000000c4d57a05a190c477
Content-Transfer-Encoding: quoted-printable
Habit from a long long time ago error made me mark each main cap in my
engines with a center punch and the side of the block area with a simular
mark so that reassembly would always be correct & easy. This came from my
work in the very early 50's and unknown engines for all over the world
where you'd better have a clue on how to put that devil back together.
*Never be beaten by equipment.*
On Mon, Mar 23, 2020 at 7:36 PM Bob Kramer via Fot <fot@autox.team.net>
wrote:
> Don=E2=80=99t all the main bearing caps go in with bearing notches on the=
same
> side as the notches in the saddles in the block? Or is that just a TR4
> thing?
>
> Sent from my iPhone
>
> On Mar 23, 2020, at 6:59 PM, Enquiries Road & Track via Fot <
> fot@autox.team.net> wrote:
>
> =EF=BB=BF
> firstly, are you 100% sure the caps are correctly fitted both round the
> right way and in number order?
>
> you need to decide if the caps are misaligned across the block or if the
> tunnel is simply oval because the hole in in cap is too far up or down.
> this will need a combination of feel and measurement
>
> if the alternative caps have a significant step to 1 side, so you will
> clearly feel a ledge at the mating faces when they are tightened up
>
> if the stap is very minor, like a few thousandths of an inch, then the
> faces of the cap are machined down to create an oval hole, then it it is
> align honed
>
> if it is really bad, like many tens of thou, then you have to firstly mov=
e
> the cap sideways by machining the register on 1 side and peening it on th=
e
> other, and effectively moving it sideways, followed by boring/honing
>
> sometimes, the bolts are too neat a fit to allow this and if thats the
> case, its usually easier to find some other caps or make them
>
> if the tunnel is simply an oval because the cap is too far up or down,
> this is usually easily fixed by facing the cap mating surfaces and rebori=
ng
> the tunnels
>
> not all engine machine shop have a line borer...mine did not, so
> subcontracting the job is not uncommon
>
> the end result should be a perfectly round hole with a super fine hone
> (cross-hatch) mark on the bearing faces, to ensure perfect bearing
> shell contact
>
> Terry
> Australia
>
>
>
>
> On Tue, Mar 24, 2020 at 1:32 AM Bud Rolofson via Fot <fot@autox.team.net>
> wrote:
>
>> Speaking of main caps I bought a block that turned out to not have the
>> original main caps. The caps on there did not match up with the block bu=
t
>> I=E2=80=99ve been unable to find a machine shop that can machine them so=
there=E2=80=99s a
>> round hole for the crank. The shop I had do my last block (and they do 4=
27
>> race engines among others and are well respected) told me that the resul=
t
>> would be ovaled out holes (not round) which obviously is not good.
>> Certainly there=E2=80=99s a way to make this work but I haven=E2=80=99t =
found it. I
>> checked out another block shop but said they subcontract line-boring to =
the
>> the shop that said they couldn=E2=80=99t do it.
>>
>> Has anyone else encountered this problem? I=E2=80=99ve heard that steel =
mains
>> might be an answer but they=E2=80=99d still have to be line-bored to mak=
e them
>> match. I hate to ship a block to get this done before I have reassurance=
s
>> that they can make it work but does anyone know of that has successfully
>> made main caps match the block? Given I=E2=80=99m spending a lot of time=
these days
>> staying home and catching up on car projects in the shop I figured it wo=
uld
>> be a good time to start building the next engine.
>>
>> Solutions or recommendations?
>>
>> Thanks
>> Bud
>>
>>
>>
>> On Mar 22, 2020, at 9:33 PM, Brad Eells via Fot <fot@autox.team.net>
>> wrote:
>>
>> Amici,
>>
>> In typically rookie race engine builder mode with the block I selected
>> for rebuild, I pulled the main bearing caps (with my new fancy DeWalt 20=
V
>> Impact Wrench) and then couldn't remember which way around they went.
>>
>> This led to visions of catastrophic failure somewhere down the road. Yet=
,
>> I had several other blocks I could flip over and make a determination if
>> need be.
>>
>> I was examining one of the caps when I discovered the faintest engraving
>> on the surface of each cap:
>>
>> Eng #2 Front Fwd
>> Eng #2 Mid Fwd
>> Eng #2 Rr Fwd
>>
>> Doug Brown, my original owner/builder/driver extraordinaire had engraved
>> each cap for me to make sure a mistake didn't occur. He rotated 3 engine=
s
>> during each season in a quest for Divisional and National Championships.
>>
>> I guess that is the way a aeronautical/mechanical engineer and very
>> successful racer thinks.
>>
>> Thanks again Doug!
>>
>> <IMG_8745.jpg>
>>
>> Cheers,
>>
>>
>> *Brad Eells*
>> *Chino CA*
>> *#72 FP 1969 Triumph Spitfire Mk3*
>> *#35 DP 1962 Triumph TR4*
>> *1965 Triumph TR4A IRS...for the road!*
>>
>>
>> _______________________________________________
>> fot@autox.team.net
>>
>> http://www.fot-racing.com
>>
>> 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/levilevi@comcast.net
>>
>>
>>
>> Bud Rolofson
>>
>> Extreme Parts Racing (more than just a haircut)
>>
>> 71TR6 CC57365 (Good 6)
>> 71 Spitfire MK IV Race Car #3
>> 69 Spitfire MK III (back up FE engine/dinghy car)
>> 93 Minnie Winnie Race Support Vehicle
>> 77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
>>
>> _______________________________________________
>> fot@autox.team.net
>>
>> http://www.fot-racing.com
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
>> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>=
:
>> http://autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au
>>
>>
>> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> 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/rkramer56@gmail.com
>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>:
> http://autox.team.net/mailman/options/fot/kaskastner@gmail.com
>
>
>
--000000000000c4d57a05a190c477
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Habit from a long long time ago error made me mark each ma=
in cap in my engines with a=C2=A0 center=C2=A0punch and the side of the blo=
ck area with a simular mark so that reassembly would always be=C2=A0 correc=
t & easy.=C2=A0 This came from my work in the very early 50's and u=
nknown=C2=A0engines for all over the=C2=A0world where you'd better have=
a clue on how to put that devil back together.<br clear=3D"all"><div><div =
dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><p=
><strong><font color=3D"#000099">Never be beaten by equipment.</font></stro=
ng></p></div></div><br></div><br><div class=3D"gmail_quote"><div dir=3D"ltr=
" class=3D"gmail_attr">On Mon, Mar 23, 2020 at 7:36 PM Bob Kramer via Fot &=
lt;<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>> wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"auto=
">Don=E2=80=99t all the main bearing caps go in with bearing notches on the=
same side as the notches in the saddles in the block? Or is that just a TR=
4 thing?<br><br><div dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr">=
<br><blockquote type=3D"cite">On Mar 23, 2020, at 6:59 PM, Enquiries Road &=
amp; Track via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_bla=
nk">fot@autox.team.net</a>> wrote:<br><br></blockquote></div><blockquote=
type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D"ltr">firstly, are you =
100% sure the caps are correctly fitted both round the right way and in num=
ber order?<div><br></div><div>you need to decide if the caps are misaligned=
across the block or if the tunnel is simply oval because=C2=A0the hole in =
in cap is too far up or down. this will need a combination of feel and meas=
urement<br><div><br></div><div><div>if the alternative=C2=A0caps have a sig=
nificant step to 1 side, so you will clearly feel a ledge at the mating fac=
es when they are tightened up<br></div><div><div><br></div><div>if the stap=
is very minor, like a few thousandths=C2=A0of an inch, then the faces of t=
he cap are machined down to create an oval hole, then it it is align honed<=
/div><div><br></div><div>if it is really bad, like many tens of thou, then =
you have to firstly move the cap sideways by machining the register on 1 si=
de and peening=C2=A0it on the other, and effectively moving it sideways, fo=
llowed by boring/honing</div><div><br></div><div>sometimes, the bolts are t=
oo neat a fit to allow this and if thats the case, its usually easier to fi=
nd some other caps or make them</div><div><br></div><div>if the tunnel is s=
imply=C2=A0an=C2=A0oval because the cap is too far up or down, this is usua=
lly easily fixed by facing the cap mating surfaces and reboring the tunnels=
</div><div><br></div><div>not all engine machine shop have a line borer...m=
ine did not, so subcontracting the job is not uncommon</div><div><br></div>=
<div>the end result should be a perfectly round hole with a super fine hone=
(cross-hatch) mark on the bearing faces, to ensure=C2=A0perfect bearing sh=
ell=C2=A0contact</div><div><br></div><div>=C2=A0Terry</div><div>Australia</=
div><div><br></div><div><div><div dir=3D"ltr"><div dir=3D"ltr"><div><div di=
r=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"=
><div><div dir=3D"ltr"><div><br></div></div></div></div></div></div></div><=
/div></div></div></div></div></div></div><br></div></div></div></div></div>=
<br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue=
, Mar 24, 2020 at 1:32 AM Bud Rolofson via Fot <<a href=3D"mailto:fot@au=
tox.team.net" target=3D"_blank">fot@autox.team.net</a>> wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><div>Speaking of main cap=
s I bought a block that turned out to not have the original main caps. The =
caps on there did not match up with the block but I=E2=80=99ve been unable =
to find a machine shop that can machine them so there=E2=80=99s a round hol=
e for the crank. The shop I had do my last block (and they do 427 race engi=
nes among others and are well respected) told me that the result would be o=
valed out holes (not round) which obviously is not good.<div>Certainly ther=
e=E2=80=99s a way to make this work but I haven=E2=80=99t found it. I check=
ed out another block shop but said they subcontract line-boring to the the =
shop that said they couldn=E2=80=99t do it.=C2=A0</div><div><br></div><div>=
Has anyone else encountered this problem? I=E2=80=99ve heard that steel mai=
ns might be an answer but they=E2=80=99d still have to be line-bored to mak=
e them match. I hate to ship a block to get this done before I have reassur=
ances that they can make it work but does anyone know of that has successfu=
lly made main caps match the block? Given I=E2=80=99m spending a lot of tim=
e these days staying home and catching up on car projects in the shop I fig=
ured it would be a good time to start building the next engine.</div><div><=
br></div><div>Solutions or recommendations?</div><div><br></div><div>Thanks=
</div><div>Bud<br><div><br></div><div>=C2=A0<br><div><blockquote type=3D"ci=
te"><div>On Mar 22, 2020, at 9:33 PM, Brad Eells via Fot <<a href=3D"mai=
lto:fot@autox.team.net" target=3D"_blank">fot@autox.team.net</a>> wrote:=
</div><br><div><div dir=3D"ltr">Amici,<div><br></div><div>In typically rook=
ie race engine builder mode with the block I selected for rebuild, I pulled=
the main bearing caps (with my new fancy DeWalt 20V Impact Wrench) and the=
n couldn't remember which way around they went.=C2=A0</div><div><br></d=
iv><div>This led to visions of catastrophic failure somewhere down the road=
. Yet, I had several other blocks I could flip over and make a determinatio=
n if need be.</div><div><br></div><div>I was examining one of the caps when=
I discovered the faintest engraving on the surface of each cap:<br><br>Eng=
#2 Front Fwd</div><div>Eng #2 Mid Fwd</div><div>Eng #2 Rr Fwd</div><div><b=
r></div><div>Doug Brown, my original owner/builder/driver extraordinaire ha=
d engraved each cap for me to make sure a mistake didn't occur. He rota=
ted 3 engines during each season in a quest for Divisional and National Cha=
mpionships.</div><div><br></div><div>I guess that is the way a aeronautical=
/mechanical engineer and very successful=C2=A0racer thinks.</div><div><br><=
/div><div>Thanks again Doug!</div><div><br></div><div><div><span id=3D"gmai=
l-m_9123397575728480048gmail-m_-3422984220944576185gmail-m_2395422064748517=
556cid:ii_k83wus460"><IMG_8745.jpg></span><br></div><div><br></div><d=
iv>Cheers,</div><div><br></div><div><br></div><div><div dir=3D"ltr"><div di=
r=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div dir=3D"ltr"><div=
dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D=
"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><div style=3D=
"font-size:12.8px"><b><font>Brad Eells</font></b></div><div style=3D"font-s=
ize:12.8px"><b><font>Chino CA</font></b></div><div style=3D"font-size:12.8p=
x"><b><font>#72 FP 1969 Triumph Spitfire Mk3</font></b></div><div style=3D"=
font-size:12.8px"><b><font>#35 DP 1962 Triumph TR4</font></b></div><div sty=
le=3D"font-size:12.8px"><b><font>1965 Triumph TR4A IRS...for the road!</fon=
t></b><br></div></div><div style=3D"font-size:12.8px"><b><font><img src=3D"=
https://docs.google.com/uc?export=3Ddownload&id=3D1HyYLxa1_Lz_Q0kLM3GRJ=
ryNDgfOwZyUc&revid=3D0B9vVTDWaFCqFVmR6Q1FsMExZTHVLcHpja3BpSC9ucGcveHdJP=
Q" width=3D"96" height=3D"94"><br></font></b></div><div><br></div></div></d=
iv></div></div></div></div></div></div></div></div></div></div></div></div>=
</div></div></div></div>
_______________________________________________<br><a href=3D"mailto:fot@au=
tox.team.net" target=3D"_blank">fot@autox.team.net</a><br><br><a href=3D"ht=
tp://www.fot-racing.com" target=3D"_blank">http://www.fot-racing.com</a><br=
><br>Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">=
m.net/archive" target=3D"_blank">http://autox.team.net/archive</a> <a href=
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t/pipermail/fot</a><br>Unsubscribe/Manage: <a href=3D"http://autox.team.net=
/mailman/options/fot/levilevi@comcast.net" target=3D"_blank">http://autox.t=
eam.net/mailman/options/fot/levilevi@comcast.net</a><br><br><br></div></blo=
ckquote></div><br><div>
Bud Rolofson<br><br>Extreme Parts Racing=C2=A0(more than just a haircut)<br=
><br>71TR6 CC57365 (Good=C2=A06)<br>71 Spitfire MK IV Race=C2=A0Car #3<br>6=
9 Spitfire MK III (back=C2=A0up FE engine/dinghy car)<br>93 Minnie Winnie R=
ace=C2=A0Support Vehicle=C2=A0<br>77 Z-50A Hardly=C2=A0Davidson Honda Mini-=
Trail Bike (Triumph Pit=C2=A0Bike)
</div>
<br></div></div></div>_______________________________________________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
http://www.fot-racing.com</a><br>
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Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" targe=
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<br>
<br>
</blockquote></div>
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an><br><span></span><br><span></span><br></div></blockquote></div>_________=
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</blockquote></div>
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