Subject: Re: [Spridgets] Interference

From: Rick Fisk via Spridgets <[email-masked]>
Date: Thu, 5 May 2022 15:06:15 -0400

--Apple-Mail-BED91C7B-8FC0-41F1-A951-4AB42E5339F6
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

Forgot to add both valves were bent as well.

> On May 5, 2022, at 3:01 PM, Rick Fisk <[email-masked]> wrote:
>=20
> =EF=BB=BFYes, the 1275 is an interference engine.  In this photo you can s=
ee where the valves beat the crap out of the top of the piston.  The piston b=
roke in half at the wrist pin and the top half of the piston stayed at the t=
op of the bore.
>=20

--Apple-Mail-BED91C7B-8FC0-41F1-A951-4AB42E5339F6
	name=image0.jpeg;
	x-apple-part-url=F6313F47-DC17-4BAF-A43E-963B367FA585-L0-001
Content-Disposition: inline;
	filename=image0.jpeg
Content-Transfer-Encoding: base64

--Apple-Mail-BED91C7B-8FC0-41F1-A951-4AB42E5339F6
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

>=20
>=20
>> On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets <spridgets@auto=
x.team.net> wrote:
>>=20
>> =EF=BB=BF
>> When I rebuilt my 1275 for the Bugeye I converted to belt drive for timin=
g.  Keeps the timing spot on.  It occurs to me that like other cars the timi=
ng belt has a limited life and must be changed.  To be honest the instructio=
ns did not say when this should occur as far as I can remember.  To be fair,=
 the rebuilt engine has only a little over 3K miles on it, but the question a=
rises about valve interference if the belt breaks.  To my knowledge, I don't=
 think so, but I have been proven wrong before.  Anyone know if a 1275 would=
 be an interference engine if the belt broke?
>> Mike MacLean
>> ------------------------
>>=20
>> [email-masked]
>>=20
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation: $12.75
>>=20
>> Archive: http://www.team.net/pipermail/spridgets  http://autox.team.net/a=
rchive
>>=20
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/refis=
[email-masked]

--Apple-Mail-BED91C7B-8FC0-41F1-A951-4AB42E5339F6
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

------------------------

[email-masked]

Archive: http://www.team.net/pipermail/spridgets  http://autox.team.net/archive

--Apple-Mail-BED91C7B-8FC0-41F1-A951-4AB42E5339F6--

---

From: Weslake1330 via Spridgets <[email-masked]>
Date: Thu, 5 May 2022 21:41:09 +0100

--===============5879761609461033422==

--000000000000d8140905de49c3f8
Content-Transfer-Encoding: quoted-printable

I always thought it depended on the cam and rockers whether or not the
valves would hit the piston if the belt broke on an A-series.  A long time
ago my dyno guy said for my engine if the belt broke the valves would
definitely hit the piston.  No, I don't have the full valve lift figure
handy.

On Thu, 5 May 2022 at 20:16, Rick Fisk via Spridgets <
[email-masked]> wrote:

> > =EF=BB=BFYes, the 1275 is an interference engine.  In this photo you ca=
n see
> where the valves beat the crap out of the top of the piston.  The piston
> broke in half at the wrist pin and the top half of the piston stayed at t=
he
> top of the bore.
> >
> >
> >
> >> On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets <
> [email-masked]> wrote:
> >>
> >> =EF=BB=BF
> >> When I rebuilt my 1275 for the Bugeye I converted to belt drive for
> timing.  Keeps the timing spot on.  It occurs to me that like other cars
> the timing belt has a limited life and must be changed.  To be honest the
> instructions did not say when this should occur as far as I can remember.
> To be fair, the rebuilt engine has only a little over 3K miles on it, but
> the question arises about valve interference if the belt breaks.  To my
> knowledge, I don't think so, but I have been proven wrong before.  Anyone
> know if a 1275 would be an interference engine if the belt broke?
> >> Mike MacLean
> >> ------------------------
> >>
> >> [email-masked]
> >>
> >> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/spridgets/[email-masked]
> ------------------------
>
> [email-masked]
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/spridgets/[email-masked]
>

--000000000000d8140905de49c3f8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">I always thought it depended on the cam and rockers whethe=
r or not the valves would hit the piston if the belt broke on an A-series.=
=C2=A0 A long time ago my dyno guy said for my engine if the belt broke the=
 valves would definitely hit the piston.=C2=A0 No, I don&#39;t have the ful=
l valve lift figure handy.</div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Thu, 5 May 2022 at 20:16, Rick Fisk via Spridg=
ets &lt;<a href=3D"mailto:[email-masked]">[email-masked]=
t</a>&gt; 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"=
>Forgot to add both valves were bent as well.<br>
<br>
&gt; On May 5, 2022, at 3:01 PM, Rick Fisk &lt;<a href=3D"mailto:refisk@cha=
rtermi.net" target=3D"_blank">[email-masked]</a>&gt; wrote:<br>
&gt; <br>
&gt; =EF=BB=BFYes, the 1275 is an interference engine.=C2=A0 In this photo =
you can see where the valves beat the crap out of the top of the piston.=C2=
=A0 The piston broke in half at the wrist pin and the top half of the pisto=
n stayed at the top of the bore.<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt;&gt; On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets &lt;<a h=
ref=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
eam.net</a>&gt; wrote:<br>
&gt;&gt; <br>
&gt;&gt; =EF=BB=BF<br>
&gt;&gt; When I rebuilt my 1275 for the Bugeye I converted to belt drive fo=
r timing.=C2=A0 Keeps the timing spot on.=C2=A0 It occurs to me that like o=
ther cars the timing belt has a limited life and must be changed.=C2=A0 To =
be honest the instructions did not say when this should occur as far as I c=
an remember.=C2=A0 To be fair, the rebuilt engine has only a little over 3K=
 miles on it, but the question arises about valve interference if the belt =
breaks.=C2=A0 To my knowledge, I don&#39;t think so, but I have been proven=
 wrong before.=C2=A0 Anyone know if a 1275 would be an interference engine =
if the belt broke?<br>
&gt;&gt; Mike MacLean<br>
&gt;&gt; ------------------------<br>
&gt;&gt; <br>
&gt;&gt; <a href=3D"mailto:[email-masked]" target=3D"_blank">spri=
[email-masked]</a><br>
&gt;&gt; <br>
&gt;&gt; Donate: <a href=3D"http://www.team.net/donate.html" rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
&gt;&gt; Suggested annual donation: $12.75<br>
&gt;&gt; <br>
&gt;&gt; Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=
=3D"noreferrer" target=3D"_blank">http://www.team.net/pipermail/spridgets</=
a>=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"noreferrer" targe=
t=3D"_blank">http://autox.team.net/archive</a><br>
&gt;&gt; <br>
&gt;&gt; Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/optio=
ns/spridgets/[email-masked]" rel=3D"noreferrer" target=3D"_blank">htt=
p://autox.team.net/mailman/options/spridgets/[email-masked]</a><br>
------------------------<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">spridgets@aut=
ox.team.net</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/spridgets</a>=C2=A0 <a=
 href=3D"http://autox.team.net/archive" rel=3D"noreferrer" target=3D"_blank=
">http://autox.team.net/archive</a><br>
<br>
ets/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/options/spridgets/[email-masked]</a><br>
</blockquote></div>

--000000000000d8140905de49c3f8--

--===============5879761609461033422==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

------------------------

[email-masked]

--===============5879761609461033422==--

---

From: Michael MacLean via Spridgets <[email-masked]>
Date: Thu, 5 May 2022 13:45:51 -0700

--===============5322916970838846380==

--00000000000084ed9e05de49d475
Content-Transfer-Encoding: quoted-printable

I don=E2=80=99t suppose having 1.5 rockers helps the situation much either.
Mike M

On Thu, May 5, 2022, 1:41 PM Weslake1330 <[email-masked]> wrote:

> valves would hit the piston if the belt broke on an A-series.  A long tim=
e
>> > =EF=BB=BFYes, the 1275 is an interference engine.  In this photo you c=
an see
>> broke in half at the wrist pin and the top half of the piston stayed at =
the
>> the timing belt has a limited life and must be changed.  To be honest th=
e
>> instructions did not say when this should occur as far as I can remember=
.
>> To be fair, the rebuilt engine has only a little over 3K miles on it, bu=
t
>> knowledge, I don't think so, but I have been proven wrong before.  Anyon=
e
>> http://autox.team.net/mailman/options/spridgets/[email-masked]

--00000000000084ed9e05de49d475
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">I don=E2=80=99t suppose having 1.5 rockers helps the situ=
ation much either.<div dir=3D"auto">Mike M</div></div><br><div class=3D"gma=
il_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, May 5, 2022, 1:41 P=
M Weslake1330 &lt;<a href=3D"mailto:[email-masked]">weslake1330@gmai=
l.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"lt=
r">I always thought it depended on the cam and rockers whether or not the v=
alves would hit the piston if the belt broke on an A-series.=C2=A0 A long t=
ime ago my dyno guy said for my engine if the belt broke the valves would d=
efinitely hit the piston.=C2=A0 No, I don&#39;t have the full valve lift fi=
gure handy.</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">On Thu, 5 May 2022 at 20:16, Rick Fisk via Spridgets &lt;<a href=
=3D"mailto:[email-masked]" target=3D"_blank" rel=3D"noreferrer">s=
[email-masked]</a>&gt; 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">Forgot to add both valves were bent as well.<br>
<br>
&gt; On May 5, 2022, at 3:01 PM, Rick Fisk &lt;<a href=3D"mailto:refisk@cha=
rtermi.net" target=3D"_blank" rel=3D"noreferrer">[email-masked]</a>&g=
t; wrote:<br>
&gt; <br>
&gt; =EF=BB=BFYes, the 1275 is an interference engine.=C2=A0 In this photo =
you can see where the valves beat the crap out of the top of the piston.=C2=
=A0 The piston broke in half at the wrist pin and the top half of the pisto=
n stayed at the top of the bore.<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt;&gt; On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets &lt;<a h=
ref=3D"mailto:[email-masked]" target=3D"_blank" rel=3D"noreferrer=
">[email-masked]</a>&gt; wrote:<br>
&gt;&gt; <br>
&gt;&gt; =EF=BB=BF<br>
&gt;&gt; When I rebuilt my 1275 for the Bugeye I converted to belt drive fo=
r timing.=C2=A0 Keeps the timing spot on.=C2=A0 It occurs to me that like o=
ther cars the timing belt has a limited life and must be changed.=C2=A0 To =
be honest the instructions did not say when this should occur as far as I c=
an remember.=C2=A0 To be fair, the rebuilt engine has only a little over 3K=
 miles on it, but the question arises about valve interference if the belt =
breaks.=C2=A0 To my knowledge, I don&#39;t think so, but I have been proven=
 wrong before.=C2=A0 Anyone know if a 1275 would be an interference engine =
if the belt broke?<br>
&gt;&gt; Mike MacLean<br>
&gt;&gt; ------------------------<br>
&gt;&gt; <br>
&gt;&gt; <a href=3D"mailto:[email-masked]" target=3D"_blank" rel=
=3D"noreferrer">[email-masked]</a><br>
&gt;&gt; <br>
&gt;&gt; Donate: <a href=3D"http://www.team.net/donate.html" rel=3D"norefer=
rer noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
&gt;&gt; Suggested annual donation: $12.75<br>
&gt;&gt; <br>
&gt;&gt; Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=
=3D"noreferrer noreferrer" target=3D"_blank">http://www.team.net/pipermail/=
spridgets</a>=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"norefe=
rrer noreferrer" target=3D"_blank">http://autox.team.net/archive</a><br>
&gt;&gt; <br>
&gt;&gt; Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/optio=
ns/spridgets/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"=
_blank">http://autox.team.net/mailman/options/spridgets/[email-masked]=
t</a><br>
------------------------<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank" rel=3D"norefe=
rrer">[email-masked]</a><br>
<br>
errer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=3D"norefer=
rer noreferrer" target=3D"_blank">http://www.team.net/pipermail/spridgets</=
a>=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"noreferrer norefe=
rrer" target=3D"_blank">http://autox.team.net/archive</a><br>
<br>
ets/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"_blank">=
http://autox.team.net/mailman/options/spridgets/[email-masked]</a><b=
r>
</blockquote></div>
</blockquote></div>

--00000000000084ed9e05de49d475--

--===============5322916970838846380==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

------------------------

[email-masked]

--===============5322916970838846380==--

---

From: Greg Higgins via Spridgets <[email-masked]>
Date: Thu, 5 May 2022 22:16:39 -0400

--===============3428062924425742770==

--000000000000900bcd05de4e738c
Content-Transfer-Encoding: quoted-printable

I owned a 1977 Honda Civic with a 1.2 litre engine, I bought the car new.
The
timing belt had to be changed every 50.000 miles on that model. I was 6000
miles
over the timing belt's best before mileage. The timing belt broke while
going to work one afternoon.
There was no damage to the engine, a new belt and I was good to go. I made
sure I was under
50,000 miles when I replaced that one. Lesson learned.

Greg Higgins

On Thu, May 5, 2022 at 4:46 PM Michael MacLean via Spridgets <
[email-masked]> wrote:

> I don=E2=80=99t suppose having 1.5 rockers helps the situation much eithe=
r.
>> valves would hit the piston if the belt broke on an A-series.  A long ti=
me
>>> > =EF=BB=BFYes, the 1275 is an interference engine.  In this photo you =
can see
>>> where the valves beat the crap out of the top of the piston.  The pisto=
n
>>> broke in half at the wrist pin and the top half of the piston stayed at=
 the
>>> timing.  Keeps the timing spot on.  It occurs to me that like other car=
s
>>> the timing belt has a limited life and must be changed.  To be honest t=
he
>>> instructions did not say when this should occur as far as I can remembe=
r.
>>> To be fair, the rebuilt engine has only a little over 3K miles on it, b=
ut
>>> knowledge, I don't think so, but I have been proven wrong before.  Anyo=
ne
> http://autox.team.net/mailman/options/spridgets/[email-masked]
>

--000000000000900bcd05de4e738c
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">I owned a 1977 Honda Civic with a 1.2 litre engine, I boug=
ht the car new. The<div>timing belt had to be changed every 50.000 miles on=
 that model. I was 6000 miles</div><div>over the timing belt&#39;s best bef=
ore mileage. The timing belt broke while going to work one afternoon.</div>=
<div>There was no damage to the engine, a new belt and I was good to go. I =
made sure I was under</div><div>50,000 miles when I replaced that one. Less=
on learned.</div><div><br></div><div>Greg Higgins</div></div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, May 5, 2022 =
at 4:46 PM Michael MacLean via Spridgets &lt;<a href=3D"mailto:spridgets@au=
tox.team.net">[email-masked]</a>&gt; wrote:<br></div><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px sol=
id rgb(204,204,204);padding-left:1ex"><div dir=3D"auto">I don=E2=80=99t sup=
pose having 1.5 rockers helps the situation much either.<div dir=3D"auto">M=
ike M</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">On Thu, May 5, 2022, 1:41 PM Weslake1330 &lt;<a href=3D"mailto:w=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; 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 dir=3D"lt=
r">I always thought it depended on the cam and rockers whether or not the v=
alves would hit the piston if the belt broke on an A-series.=C2=A0 A long t=
ime ago my dyno guy said for my engine if the belt broke the valves would d=
efinitely hit the piston.=C2=A0 No, I don&#39;t have the full valve lift fi=
gure handy.</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">On Thu, 5 May 2022 at 20:16, Rick Fisk via Spridgets &lt;<a href=
=3D"mailto:[email-masked]" rel=3D"noreferrer" target=3D"_blank">s=
[email-masked]</a>&gt; 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">Forgot to add both valves were bent as well.<br>
<br>
&gt; On May 5, 2022, at 3:01 PM, Rick Fisk &lt;<a href=3D"mailto:refisk@cha=
rtermi.net" rel=3D"noreferrer" target=3D"_blank">[email-masked]</a>&g=
t; wrote:<br>
&gt; <br>
&gt; =EF=BB=BFYes, the 1275 is an interference engine.=C2=A0 In this photo =
you can see where the valves beat the crap out of the top of the piston.=C2=
=A0 The piston broke in half at the wrist pin and the top half of the pisto=
n stayed at the top of the bore.<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt;&gt; On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets &lt;<a h=
ref=3D"mailto:[email-masked]" rel=3D"noreferrer" target=3D"_blank=
">[email-masked]</a>&gt; wrote:<br>
&gt;&gt; <br>
&gt;&gt; =EF=BB=BF<br>
&gt;&gt; When I rebuilt my 1275 for the Bugeye I converted to belt drive fo=
r timing.=C2=A0 Keeps the timing spot on.=C2=A0 It occurs to me that like o=
ther cars the timing belt has a limited life and must be changed.=C2=A0 To =
be honest the instructions did not say when this should occur as far as I c=
an remember.=C2=A0 To be fair, the rebuilt engine has only a little over 3K=
 miles on it, but the question arises about valve interference if the belt =
breaks.=C2=A0 To my knowledge, I don&#39;t think so, but I have been proven=
 wrong before.=C2=A0 Anyone know if a 1275 would be an interference engine =
if the belt broke?<br>
&gt;&gt; Mike MacLean<br>
&gt;&gt; ------------------------<br>
&gt;&gt; <br>
&gt;&gt; <a href=3D"mailto:[email-masked]" rel=3D"noreferrer" tar=
get=3D"_blank">[email-masked]</a><br>
&gt;&gt; <br>
&gt;&gt; Donate: <a href=3D"http://www.team.net/donate.html" rel=3D"norefer=
rer noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
&gt;&gt; Suggested annual donation: $12.75<br>
&gt;&gt; <br>
&gt;&gt; Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=
=3D"noreferrer noreferrer" target=3D"_blank">http://www.team.net/pipermail/=
spridgets</a>=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"norefe=
rrer noreferrer" target=3D"_blank">http://autox.team.net/archive</a><br>
&gt;&gt; <br>
&gt;&gt; Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/optio=
ns/spridgets/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"=
_blank">http://autox.team.net/mailman/options/spridgets/[email-masked]=
t</a><br>
------------------------<br>
<br>
<a href=3D"mailto:[email-masked]" rel=3D"noreferrer" target=3D"_b=
lank">[email-masked]</a><br>
<br>
errer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=3D"norefer=
rer noreferrer" target=3D"_blank">http://www.team.net/pipermail/spridgets</=
a>=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"noreferrer norefe=
rrer" target=3D"_blank">http://autox.team.net/archive</a><br>
<br>
ets/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"_blank">=
http://autox.team.net/mailman/options/spridgets/[email-masked]</a><b=
r>
</blockquote></div>
</blockquote></div>
------------------------<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">spridgets@aut=
ox.team.net</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/spridgets" rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/spridgets</a>=C2=A0 <a=
 href=3D"http://autox.team.net/archive" rel=3D"noreferrer" target=3D"_blank=
">http://autox.team.net/archive</a><br>
<br>
ets/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/options/spridgets/[email-masked]</a><br>
</blockquote></div>

--000000000000900bcd05de4e738c--

--===============3428062924425742770==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

------------------------

[email-masked]

--===============3428062924425742770==--