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Might be best to fund another block. There are plenty of them around.
Sent from my iPhone
> On Mar 23, 2020, at 7:59 PM, Enquiries Road & Track via Fot <fot@autox.tea=
m.net> wrote:
>=20
> =EF=BB=BF
> firstly, are you 100% sure the caps are correctly fitted both round the ri=
ght way and in number order?
>=20
> you need to decide if the caps are misaligned across the block or if the t=
unnel is simply oval because the hole in in cap is too far up or down. this w=
ill need a combination of feel and measurement
>=20
> if the alternative caps have a significant step to 1 side, so you will cle=
arly feel a ledge at the mating faces when they are tightened up
>=20
> if the stap is very minor, like a few thousandths of an inch, then the fac=
es of the cap are machined down to create an oval hole, then it it is align h=
oned
>=20
> 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 side and peening it on the o=
ther, and effectively moving it sideways, followed by boring/honing
>=20
> sometimes, the bolts are too neat a fit to allow this and if thats the cas=
e, its usually easier to find some other caps or make them
>=20
> if the tunnel is simply an oval because the cap is too far up or down, thi=
s is usually easily fixed by facing the cap mating surfaces and reboring the=
tunnels
>=20
> not all engine machine shop have a line borer...mine did not, so subcontra=
cting the job is not uncommon
>=20
> the end result should be a perfectly round hole with a super fine hone (cr=
oss-hatch) mark on the bearing faces, to ensure perfect bearing shell contac=
t
>=20
> Terry
> Australia
>=20
>=20
>=20
>=20
>> 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 or=
iginal 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 hole for the crank. The shop I had do my last block (and the=
y do 427 race engines among others and are well respected) told me that the r=
esult 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 f=
ound it. I checked out another block shop but said they subcontract line-bor=
ing to the the shop that said they couldn=E2=80=99t do it.=20
>>=20
>> Has anyone else encountered this problem? I=E2=80=99ve heard that steel m=
ains might be an answer but they=E2=80=99d still have to be line-bored to ma=
ke 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 successful=
ly made main caps match the block? Given I=E2=80=99m spending a lot of time t=
hese days staying home and catching up on car projects in the shop I figured=
it would be a good time to start building the next engine.
>>=20
>> Solutions or recommendations?
>>=20
>> Thanks
>> Bud
>>=20
>> =20
>>> On Mar 22, 2020, at 9:33 PM, Brad Eells via Fot <fot@autox.team.net> wro=
te:
>>>=20
>>> Amici,
>>>=20
>>> In typically rookie race engine builder mode with the block I selected f=
or rebuild, I pulled the main bearing caps (with my new fancy DeWalt 20V Imp=
act Wrench) and then couldn't remember which way around they went.=20
>>>=20
>>> 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 n=
eed be.
>>>=20
>>> I was examining one of the caps when I discovered the faintest engraving=
on the surface of each cap:
>>>=20
>>> Eng #2 Front Fwd
>>> Eng #2 Mid Fwd
>>> Eng #2 Rr Fwd
>>>=20
>>> 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 engines d=
uring each season in a quest for Divisional and National Championships.
>>>=20
>>> I guess that is the way a aeronautical/mechanical engineer and very succ=
essful racer thinks.
>>>=20
>>> Thanks again Doug!
>>>=20
>>> <IMG_8745.jpg>
>>>=20
>>> Cheers,
>>>=20
>>>=20
>>> Brad Eells
>>> Chino CA
>>> #72 FP 1969 Triumph Spitfire Mk3
>>> #35 DP 1962 Triumph TR4
>>> 1965 Triumph TR4A IRS...for the road!
>>>=20
>>>=20
>>> _______________________________________________
>>> 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/levilevi@c=
omcast.net
>>>=20
>>>=20
>>=20
>> Bud Rolofson
>>=20
>> Extreme Parts Racing (more than just a haircut)
>>=20
>> 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=20
>> 77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
>>=20
>> _______________________________________________
>> 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/enquiries@r=
oadandtrack.net.au
>>=20
>>=20
> _______________________________________________
> 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/vfracing@aol=
.com
>=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">Might be best to fund another block. There a=
re plenty of them around.<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 7:59 PM, E=
nquiries Road & Track via Fot <fot@autox.team.net> wrote:<br><br><=
/blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<div d=
ir=3D"ltr">firstly, are you 100% sure the caps are correctly fitted both rou=
nd the right way and in number order?<div><br></div><div>you need to decide i=
f the caps are misaligned across the block or if the tunnel is simply oval b=
ecause the hole in in cap is too far up or down. this will need a combi=
nation of feel and measurement<br><div><br></div><div><div>if the alternativ=
e caps have a significant step to 1 side, so you will clearly feel a le=
dge at the mating faces when they are tightened up<br></div><div><div><br></=
div><div>if the stap is very minor, like a few thousandths of an inch, t=
hen the faces of the cap are machined down to create an oval hole, then it i=
t is align honed</div><div><br></div><div>if it is really bad, like many ten=
s of thou, then you have to firstly move the cap sideways by machining the r=
egister on 1 side and peening it on the other, and effectively moving i=
t sideways, followed by boring/honing</div><div><br></div><div>sometimes, th=
e bolts are too neat a fit to allow this and if thats the case, its usually e=
asier to find some other caps or make them</div><div><br></div><div>if the t=
unnel is simply an oval because the cap is too far up or down, thi=
s is usually 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 bo=
rer...mine 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 perfect bearin=
g shell contact</div><div><br></div><div> Terry</div><div>Australi=
a</div><div><br></div><div><div><div dir=3D"ltr" data-smartmail=3D"gmail_sig=
nature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><d=
iv 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@autox.team.net"; target=3D"_blank">fot@autox.te=
am.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1=
ex"><div>Speaking of main caps I bought a block that turned out to not have t=
he 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 th=
ere=E2=80=99s a round hole for the crank. The shop I had do my last block (a=
nd they do 427 race engines among others and are well respected) told me tha=
t the result would be ovaled out holes (not round) which obviously is not go=
od.<div>Certainly there=E2=80=99s a way to make this work but I haven=E2=80=99=
t 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. </div><di=
v><br></div><div>Has anyone else encountered this problem? I=E2=80=99ve hear=
d that steel mains might be an answer but they=E2=80=99d still have to be li=
ne-bored to make them match. I hate to ship a block to get this done before I=
have reassurances that they can make it work but does anyone know of that h=
as 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 s=
hop I figured it would be a good time to start building the next engine.</di=
v><div><br></div><div>Solutions or recommendations?</div><div><br></div><div=
>Thanks</div><div>Bud<br><div><br></div><div> <br><div><blockquote type=
=3D"cite"><div>On Mar 22, 2020, at 9:33 PM, Brad Eells via Fot <<a href=3D=
"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net</a>> wro=
te:</div><br><div><div dir=3D"ltr">Amici,<div><br></div><div>In typically ro=
okie race engine builder mode with the block I selected for rebuild, I pulle=
d the main bearing caps (with my new fancy DeWalt 20V Impact Wrench) and the=
n couldn't remember which way around they went. </div><div><br></div><d=
iv>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 ne=
ed be.</div><div><br></div><div>I was examining one of the caps when I disco=
vered 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><br></div><d=
iv>Doug Brown, my original owner/builder/driver extraordinaire had engraved e=
ach cap for me to make sure a mistake didn't occur. He rotated 3 engines dur=
ing each season in a quest for Divisional and National Championships.</div><=
div><br></div><div>I guess that is the way a aeronautical/mechanical enginee=
r and very successful racer thinks.</div><div><br></div><div>Thanks aga=
in Doug!</div><div><br></div><div><div><span id=3D"gmail-m_-3422984220944576=
185gmail-m_2395422064748517556cid:ii_k83wus460"><IMG_8745.jpg></span><=
br></div><div><br></div><div>Cheers,</div><div><br></div><div><br></div><div=
><div dir=3D"ltr"><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"lt=
r"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"lt=
r"><div><div style=3D"font-size:12.8px"><b><font>Brad Eells</font></b></div>=
<div style=3D"font-size:12.8px"><b><font>Chino CA</font></b></div><div style=
=3D"font-size:12.8px"><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 style=3D"font-size:12.8px"><b><font>1965 Triumph TR4A IRS...fo=
r the road!</font></b><br></div></div><div style=3D"font-size:12.8px"><b><fo=
nt><img src=3D"https://docs.google.com/uc?export=3Ddownload&id=3D1HyYLxa=
1_Lz_Q0kLM3GRJryNDgfOwZyUc&revid=3D0B9vVTDWaFCqFVmR6Q1FsMExZTHVLcHpja3Bp=
SC9ucGcveHdJPQ" width=3D"96" height=3D"94" data-unique-identifier=3D""><br><=
/font></b></div><div><br></div></div></div></div></div></div></div></div></d=
iv></div></div></div></div></div></div></div></div></div></div>
_______________________________________________<br><a href=3D"mailto:fot@aut=
ox.team.net" target=3D"_blank">fot@autox.team.net</a><br><br><a href=3D"http=
://www.fot-racing.com" target=3D"_blank">http://www.fot-racing.com</a><br><b=
r>Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">http=
://www.team.net/donate.html</a><br>Archive: <a href=3D"http://autox.team.net=
/archive" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"htt=
p://www.team.net/pipermail/fot" target=3D"_blank">http://www.team.net/piperm=
ail/fot</a><br>Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/=
options/fot/levilevi@comcast.net" target=3D"_blank">http://autox.team.net/ma=
ilman/options/fot/levilevi@comcast.net</a><br><br><br></div></blockquote></d=
iv><br><div>
Bud Rolofson<br><br>Extreme Parts Racing (more than just a haircut)<br>=
<br>71TR6 CC57365 (Good 6)<br>71 Spitfire MK IV Race Car #3<br>69 S=
pitfire MK III (back up FE engine/dinghy car)<br>93 Minnie Winnie Race&=
nbsp;Support Vehicle <br>77 Z-50A Hardly Davidson Honda Mini-Trail=
Bike (Triumph Pit Bike)
</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">h=
ttp://www.fot-racing.com</a><br>
<br>
t=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" target=
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/pipermail/fotUnsubscribe/Manage" rel=3D"noreferrer" target=3D"_blank">http:=
//www.team.net/pipermail/fot<br>
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autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au</a><br>
<br>
<br>
</blockquote></div>
<span>_______________________________________________</span><br><span>fot@au=
tox.team.net</span><br><span></span><br><span>http://www.fot-racing.com</spa=
n><br><span></span><br><span>Donate: http://www.team.net/donate.html</span><=
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ons/fot/vfracing@aol.com</span><br><span></span><br><span></span><br></div><=
/blockquote></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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