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Hi Steve, what you describe sounds to me like excessive blow-by.
I would recommend a compression test before going too much further.
M
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Steven Kingsbur=
y via Healeys <healeys@autox.team.net>
Sent: Saturday, November 15, 2025 3:33:19 PM
To: Healey Mail List <healeys@autox.team.net>
Subject: [Healeys] Sprite question for my neighbor
My neighbor bought a bugeye that had a 1275 engine put in it. It runs well,=
but blows oil like crazy out of the oil cap on the valve cover. It does no=
t have a timing cover ventilation valve, but a fitting was made to fit onto=
where the old fuel pump fit on the side of the crankcase/block. When he ho=
oked the hose from that fitting to the carbs, oil was no longer being blown=
out, but oil was then being sucked into the carbs and he was burning oil l=
ike crazy.
It seems the pressure in the crankcase is so great it is pushing oil up the=
push rods into the rocker assembly, out the filler cap and all over the en=
gine. I'm not familiar with the 1275 and have no ideas on how to vent the p=
ressure in the crankcase. Can anyone of you guys point me to a possible sol=
ution? Thanks in advance for the advice.
Steven Kingsbury
BN1
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Hi Steve, what you describe sounds to me like excessive blow-by. </div=
>
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I would recommend a compression test before going too much further. </=
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M</div>
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<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys <healeys-b=
ounces@autox.team.net> on behalf of Steven Kingsbury via Healeys <hea=
leys@autox.team.net><br>
<b>Sent:</b> Saturday, November 15, 2025 3:33:19 PM<br>
<b>To:</b> Healey Mail List <healeys@autox.team.net><br>
<b>Subject:</b> [Healeys] Sprite question for my neighbor</font>
<div> </div>
</div>
<div>
<div>My neighbor bought a bugeye that had a 1275 engine put in it. It runs =
well, but blows oil like crazy out of the oil cap on the valve cover. It do=
es not have a timing cover ventilation valve, but a fitting was made to fit=
onto where the old fuel pump fit
on the side of the crankcase/block. When he hooked the hose from that fitt=
ing to the carbs, oil was no longer being blown out, but oil was then being=
sucked into the carbs and he was burning oil like crazy.</div>
<div><br>
</div>
<div>It seems the pressure in the crankcase is so great it is pushing oil u=
p the push rods into the rocker assembly, out the filler cap and all over t=
he engine. I'm not familiar with the 1275 and have no ideas on how to vent =
the pressure in the crankcase. Can
anyone of you guys point me to a possible solution? Thanks in advance for =
the advice.</div>
<div>Steven Kingsbury</div>
<div>BN1</div>
</div>
</body>
</html>
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