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Re: [Spridgets] 1275 Rod Knock Update

To: Michael MacLean <springer.mike51@gmail.com>, Spridgets <spridgets@autox.team.net>
Subject: Re: [Spridgets] 1275 Rod Knock Update
From: Ron Soave via Spridgets <spridgets@autox.team.net>
Date: Thu, 4 May 2023 14:02:20 +0000 (UTC)
Delivered-to: mharc@autox.team.net
Delivered-to: spridgets@autox.team.net
References: <CAL4ZEOOrNzRo2sG+s-r8HDH8SVq6Y_t+GQbKt5qa=vgqS4-V0Q@mail.gmail.com>
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Hey Mike,Sounds like several things are going on. A leak down will pinpoint=
 valves or rings or head gasket. The rod knock will only go away with new r=
od bearings, assuming the gods smoked and=C2=A0the crank isn=E2=80=99t in n=
eed of a polish or turning. Wish I were closer -=C2=A0
Ron


Sent from Yahoo Mail for iPhone


On Thursday, May 4, 2023, 3:34 AM, Michael MacLean via Spridgets <spridgets=
@autox.team.net> wrote:

Took compression readings of the 1275 engine in my Bugeye as the start of t=
he rod knock diagnosis.=C2=A0 Not good.=C2=A0 No 1 was 110 psi, No 2=C2=A0 =
-=C2=A0 90 psi, No 3 - 80 psi and No 4 was 110 psi.=C2=A0 Which means none =
of them are up to snuff.=C2=A0 Also found the spark plug wire for number 3 =
cylinder had fallen out if the distributor.=C2=A0 I plugged it back in and =
started the engine.=C2=A0 It idled smoother, but under acceleration the kno=
ck was still there and definitely coming from the block.=C2=A0 All this wit=
h only 3 - 4 thousand miles since the swap from 948 to 1275.=C2=A0 Next wil=
l be the oil in the cylinders and retake the compression test to see if the=
 low compression is due to the valves.=C2=A0 Might as well figure a head re=
build too.=C2=A0 $$$$$$$$$$$$Mike MacLean------------------------

spridgets@autox.team.net


Archive: http://www.team.net/pipermail/spridgets=C2=A0 http://autox.team.ne=
t/archive

@yahoo.com




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dy>
Hey Mike,<div>Sounds like several things are going on. A leak down will pin=
point valves or rings or head gasket. The rod knock will only go away with =
new rod bearings, assuming the gods smoked and&nbsp;the crank isn=E2=80=99t=
 in need of a polish or turning. Wish I were closer -&nbsp;</div><div><br><=
/div><div>Ron<br><br><br><a href=3D"https://overview.mail.yahoo.com/?.src=
=3DiOS">Sent from Yahoo Mail for iPhone</a><br><br><p class=3D"yahoo-quoted=
-begin" style=3D"font-size: 15px; color: #715FFA; padding-top: 15px; margin=
-top: 0">On Thursday, May 4, 2023, 3:34 AM, Michael MacLean via Spridgets &=
lt;spridgets@autox.team.net&gt; wrote:</p><blockquote class=3D"iosymail"><d=
iv id=3D"yiv0547531779"><div>Took compression readings of the 1275 engine i=
n my Bugeye as the start of the rod knock diagnosis.&nbsp; Not good.&nbsp; =
No 1 was 110 psi, No 2&nbsp; -&nbsp; 90 psi, No 3 - 80 psi and No 4 was 110=
 psi.&nbsp; Which means none of them are up to snuff.&nbsp; Also found the =
spark plug wire for number 3 cylinder had fallen out if the distributor.&nb=
sp; I plugged it back in and started the engine.&nbsp; It idled smoother, b=
ut under acceleration the knock was still there and definitely coming from =
the block.&nbsp; All this with only 3 - 4 thousand miles since the swap fro=
m 948 to 1275.&nbsp; Next will be the oil in the cylinders and retake the c=
ompression test to see if the low compression is due to the valves.&nbsp; M=
ight as well figure a head rebuild too.&nbsp; $$$$$$$$$$$$<div>Mike MacLean=
</div></div>
</div>------------------------<br><br><a ymailto=3D"mailto:spridgets@autox.=
team.net" href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net=
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ckquote></blockquote></div>
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------------------------

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