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I know the differences are the head (deeper head/thus larger combustion =
chamber on the TR6 to be proportionate to increased stroke and keep =
compression ratio reasonable.
Rods are the same, crank is stroked to get to larger displacement, =
cylinders have the same bore, TR6 pistons have a =E2=80=9Chigher=E2=80=9D =
wrist pin height equal to the amount of the increased throw, as the rods =
are the same.
On Jan 29, 2021, at 7:07 PM, Brian Schirano <bschirano1@gmail.com> =
wrote:
The two GT6 blocks I've recently worked on have the notched bottom =
bores. I'd have to look Monday about the crank blow outs on the manifold =
side. I will defer to others with more knowledge as to GT/TR =
interchangeability, but my understanding is the differences were in the =
crank, pistons and intake manis, not the blocks
Cheers
Brian
On Fri, Jan 29, 2021 at 2:34 PM Scott Janzen via Fot <fot@autox.team.net =
I am rebuilding my street TR6. I need to replace the block - it=E2=80=99s=
sleeved, bored 30 over, and needs another bore, and I would rather just =
start over as it=E2=80=99s not original to the car anyway. It=E2=80=99s =
a later block with the horizontal reinforcement cast into the manifold =
side, and the car is a 1970.
I have another block, allegedly from a GT6, has a KD number indicating =
GT6, but it has the concave/convex =E2=80=9Cblowouts=E2=80=9D on the =
manifold side to clear a TR6 crank, which none of my other GT6 blocks =
have. It=E2=80=99s also 25 lb heavier than a GT6 block, and has notches =
at the bottom of the piston bores to clear the con rods, which I=E2=80=99m=
pretty sure the GT6 blocks don=E2=80=99t have (though I don=E2=80=99t =
have a GT6 engine apart and apparently my memory is not that good).
So, here=E2=80=99s the question - can I use this for the TR6 - is it the =
same block where at some point the factory used them interchangeably?
Or, do I need to find another block?
Scott Janzen
_______________________________________________
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<http://www.team.net/donate.html>
Archive: http://autox.team.net/archive <http://autox.team.net/archive> =
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--=20
Brian Schirano
585-305-0349
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">I =
know the differences are the head (deeper head/thus larger combustion =
chamber on the TR6 to be proportionate to increased stroke and keep =
compression ratio reasonable.<div class=3D""><br class=3D""></div><div =
class=3D"">Rods are the same, crank is stroked to get to larger =
displacement, cylinders have the same bore, TR6 pistons have a =
=E2=80=9Chigher=E2=80=9D wrist pin height equal to the amount of the =
increased throw, as the rods are the same.</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div><div =
class=3D""><div><br class=3D""><div class=3D"">On Jan 29, 2021, at 7:07 =
PM, Brian Schirano <<a href=3D"mailto:bschirano1@gmail.com"; =
class=3D"">bschirano1@gmail.com</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"ltr" =
class=3D"">The two GT6 blocks I've recently worked on have the notched =
bottom bores. I'd have to look Monday about the crank blow outs on the =
manifold side. I will defer to others with more knowledge as to GT/TR =
interchangeability, but my understanding is the differences were in the =
crank, pistons and intake manis, not the blocks<div =
class=3D"">Cheers</div><div class=3D"">Brian</div></div><br =
class=3D""><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Fri, Jan 29, 2021 at 2:34 PM Scott Janzen via =
Fot <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>> wrote:<br =
class=3D""></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 style=3D"overflow-wrap: =
break-word;" class=3D"">I am rebuilding my street TR6. I need to =
replace the block - it=E2=80=99s sleeved, bored 30 over, and needs =
another bore, and I would rather just start over as it=E2=80=99s not =
original to the car anyway. It=E2=80=99s a later block with the =
horizontal reinforcement cast into the manifold side, and the car is a =
1970.<div class=3D""><br class=3D""></div><div class=3D"">I have another =
block, allegedly from a GT6, has a KD number indicating GT6, but it has =
the concave/convex =E2=80=9Cblowouts=E2=80=9D on the manifold side to =
clear a TR6 crank, which none of my other GT6 blocks have. It=E2=80=99=
s also 25 lb heavier than a GT6 block, and has notches at the bottom of =
the piston bores to clear the con rods, which I=E2=80=99m pretty sure =
the GT6 blocks don=E2=80=99t have (though I don=E2=80=99t have a GT6 =
engine apart and apparently my memory is not that good).</div><div =
class=3D""><br class=3D""></div><div class=3D"">So, here=E2=80=99s the =
question - can I use this for the TR6 - is it the same block where at =
some point the factory used them interchangeably?</div><div class=3D""><br=
class=3D""></div><div class=3D"">Or, do I need to find another =
block?</div><div class=3D""><br class=3D""></div><div class=3D"">Scott =
Janzen</div></div>_______________________________________________<br =
class=3D"">
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" =
class=3D"">fot@autox.team.net</a><br class=3D"">
<br class=3D"">
<a href=3D"http://www.fot-racing.com/"; rel=3D"noreferrer" =
target=3D"_blank" class=3D"">http://www.fot-racing.com</a><br class=3D"">
<br class=3D"">
target=3D"_blank" class=3D"">http://www.team.net/donate.html</a><br =
class=3D"">
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" =
target=3D"_blank" class=3D"">http://autox.team.net/archive</a> <a =
href=3D"http://www.team.net/pipermail/fotUnsubscribe/Manage"; =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">http://www.team.net/pipermail/fot<br class=3D"">
href=3D"http://autox.team.net/mailman/options/fot/bschirano1@gmail.com"; =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">http://autox.team.net/mailman/options/fot/bschirano1@gmail.com<=
/a><br class=3D"">
<br class=3D"">
<br class=3D"">
</blockquote></div><br clear=3D"all" class=3D""><div class=3D""><br =
class=3D""></div>-- <br class=3D""><div dir=3D"ltr" =
class=3D"gmail_signature"><div dir=3D"ltr" class=3D"">Brian Schirano<div =
class=3D"">585-305-0349</div></div></div>
</div></div><br class=3D""></div></body></html>=
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_______________________________________________
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http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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