Subject: [TR] Tr2 engine rebuild time

From: Chris Simo <[email-masked]>
Date: Thu, 24 Nov 2016 08:17:24 -0500

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After I change out the automatic transmission in my pickup, I'll be pulling
the engine on the TR2.  Last time I ran it, there was terrible blo by, but
great oil pressure.

I don't think I should just do a re-ring, though the thought crossed my
mind. It's the original motor, too.  With blo by and lot's of miles, I
figure it's time to go the replacement piston and sleeves.
Does the collective knowledge think the 1.25 bore strombergs will breathe
enough for 86mm pistons?

Any other items unique to tr2 motors come to mind?

Thanks (using my last payen head gasket on this one)

Chris
1954 TR2; 1963 TR4 (running); 1969 TR6 (basket case impulse buy); 1973 TR6
(engine/driveline/brakes done, paint next)

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<p dir=3D"ltr">After I change out the automatic transmission in my pickup, =
I&#39;ll be pulling the engine on the TR2.=C2=A0 Last time I ran it, there =
was terrible blo by, but great oil pressure. </p>
<p dir=3D"ltr">I don&#39;t think I should just do a re-ring, though the tho=
ught crossed my mind. It&#39;s the original motor, too.=C2=A0 With blo by a=
nd lot&#39;s of miles, I figure it&#39;s time to go the replacement piston =
and sleeves.<br>
Does the collective knowledge think the 1.25 bore strombergs will breathe e=
nough for 86mm pistons?</p>
<p dir=3D"ltr">Any other items unique to tr2 motors come to mind?</p>
<p dir=3D"ltr">Thanks (using my last payen head gasket on this one)</p>
<p dir=3D"ltr">Chris<br>
1954 TR2; 1963 TR4 (running); 1969 TR6 (basket case impulse buy); 1973 TR6 =
(engine/driveline/brakes done, paint next)</p>

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** [email-masked] **

Archive: http://www.team.net/archive

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From: Geo Hahn <[email-masked]>
Date: Thu, 24 Nov 2016 07:43:49 -0700

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> Does the collective knowledge think the 1.25 bore strombergs will breathe

The TR4 used 1.75 ZS -- a 1.25 carb would be just a bit more than 50% of
that.

Not my area of expertise but I would doubt you would like it.

Geo

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On T=
hu, Nov 24, 2016 at 6:17 AM, Chris Simo <span dir=3D"ltr">&lt;<a href=3D"ma=
ilto:[email-masked]" target=3D"_blank">[email-masked]</a>&gt;</=
span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-wi=
dth:1px;border-left-style:solid"><p dir=3D"ltr">
Does the collective knowledge think the 1.25 bore strombergs will breathe e=
nough for 86mm pistons?</p></blockquote><div><br></div><div>The TR4 used 1.=
75 ZS -- a 1.25 carb would be just a bit more than 50% of that.</div><div><=
br></div><div>Not my area of expertise but I would doubt you would=C2=A0lik=
e it.</div><div><br></div><div>Geo</div><div><br></div><div><br></div></div=
><br></div></div>

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From: Chris Simo <[email-masked]>
Date: Thu, 24 Nov 2016 09:49:46 -0500

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Correction. H4 is 1.5" duh.

Working on too many carbs lately...

> Not my area of expertise but I would doubt you would like it.

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<p dir=3D"ltr">Correction. H4 is 1.5&quot; duh.</p>
<p dir=3D"ltr">Working on too many carbs lately...</p>
<div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Nov 24, 2016 9=
:43 AM, &quot;Geo Hahn&quot; &lt;<a href=3D"mailto:[email-masked]">ah=
[email-masked]</a>&gt; wrote:<br type=3D"attribution"><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gma=
il_quote">On Thu, Nov 24, 2016 at 6:17 AM, Chris Simo <span dir=3D"ltr">&lt=
;<a href=3D"mailto:[email-masked]" target=3D"_blank">ccsimonsen@gmail=
.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);=
border-left-width:1px;border-left-style:solid"><p dir=3D"ltr">
Does the collective knowledge think the 1.25 bore strombergs will breathe e=
nough for 86mm pistons?</p></blockquote><div><br></div><div>The TR4 used 1.=
75 ZS -- a 1.25 carb would be just a bit more than 50% of that.</div><div><=
br></div><div>Not my area of expertise but I would doubt you would=C2=A0lik=
e it.</div><div><br></div><div>Geo</div><div><br></div><div><br></div></div=
><br></div></div>
</blockquote></div></div>

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From: "Randall" <[email-masked]>
Date: Thu, 24 Nov 2016 07:57:28 -0800

> Correction. H4 is 1.5" duh.

Also SU, not Stromberg :)

But to answer what I think your original question was, Yes, it will run just
fine with 86mm liners and the stock TR2 carbs.  You might miss out on a few
bhp from not having the larger carbs and improved cylinder head design, but
only close to redline.  You'll still get the increased torque at lower rpm
(which is where you care about on the street anyway).

-- Randall

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From: Chris Simo <[email-masked]>
Date: Thu, 24 Nov 2016 16:09:22 -0500

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Thanks for the input. More to come later!

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<p dir="ltr">Thanks for the input. More to come later!</p>

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