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Terry, we sill have 110 leaded at the tracks.
Scott
On Dec 6, 2021, at 3:00 PM, Enquiries Road & Track via Fot =
<fot@autox.team.net> wrote:
CR will be governed to a considerable extent on the fuel you intend to =
use, so think about that early on and get comments from others using the =
same fuel. As im in Australia, i can't comment on US local fuels or any =
race category regs related to that. Most of our engines run on 98RON =
unleaded
there are various thickness 2000 & 2500 heads all with different cc's =
in the combustion chamber, and even more so if you decide to do radical =
combustion chamber mods to get more clearance around the valves =20
we have found that squish plays a significant role in the 2000/2500 =
engines and its a lot of experimentation to get it even close to =
"right" mostly, we try to have the piston crown just above the block, =
but obviously not above the gasket line. if you decide to use lumpy top =
pistons, make sure you have a distinct squish band on them.
FWIW, I agree with the various other comments about stock crank, . on =
our engine we use a modified BMW harmonic balancer to improve matters =
over the stock TR one
Terry
On Tue, Dec 7, 2021 at 4:33 AM McKearn McKearn via Fot =
Now that we have the crank and rods figured out, how about we discuss =
making compression?
I know this can be a sore subject and everyone has an opinion as to how =
much is enough or too much so where do we start?
I have built a couple TR6 engines that were in the 13:1 range thanks to =
much head milling and pop up pistons. Will the 2.0 litre engine be the =
same ?
Thanks. P.J.
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" =
class=3D"">Terry, we sill have 110 leaded at the tracks.<div =
class=3D"">Scott<br class=3D""><div class=3D""><div><br class=3D""><div =
class=3D"">On Dec 6, 2021, at 3:00 PM, Enquiries Road & Track via =
Fot <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"ltr" =
class=3D""><div class=3D"">CR will be governed to a considerable extent =
on the fuel you intend to use, so think about that early on and get =
comments from others using the same fuel. As im in Australia, i =
can't comment on US local fuels or any race category regs =
related to that. Most of our engines run on 98RON unleaded<br =
class=3D""></div><div class=3D""><br class=3D""></div><div =
class=3D""> there are various thickness 2000 & 2500 =
heads all with different cc's in the combustion chamber, and even more =
so if you decide to do radical combustion chamber mods to get more =
clearance around the valves <br class=3D""></div><div =
class=3D""><br class=3D""></div><div class=3D"">we have found that =
squish plays a significant role in the 2000/2500 engines and =
its a lot of experimentation to get it even close to "right" =
mostly, we try to have the piston crown just above the block, but =
obviously not above the gasket line. if you decide to use lumpy top =
pistons, make sure you have a distinct squish band on =
them.</div><div class=3D""><br class=3D""></div><div class=3D"">FWIW, =
I agree with the various other comments about stock crank, . on =
our engine we use a modified BMW harmonic balancer to =
improve matters over the stock TR one</div><div class=3D""><br =
class=3D""></div><div class=3D"">Terry</div><div class=3D""><br =
class=3D""></div></div><br class=3D""><div class=3D"gmail_quote"><div =
dir=3D"ltr" class=3D"gmail_attr">On Tue, Dec 7, 2021 at 4:33 AM McKearn =
McKearn 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 dir=3D"ltr" class=3D"">Now that =
we have the crank and rods figured out, how about we discuss making =
compression?<div class=3D""> I know this can be a sore subject and =
everyone has an opinion as to how much is enough or too much so where do =
we start?</div><div class=3D""> I have built a couple TR6 engines =
that were in the 13:1 range thanks to much head milling and pop up =
pistons. Will the 2.0 litre engine be the same ?</div><div =
class=3D""> =
=
Thanks. P.J.</div></div>
_______________________________________________<br class=3D"">
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class=3D"">fot@autox.team.net</a><br class=3D"">
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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 =
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<br class=3D"">
<br class=3D"">
</blockquote></div>
_______________________________________________<br class=3D""><a =
href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.team.net</a><br =
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