--===============4633791565989662857==
boundary="----=_Part_1336494_2046715684.1581435137248"
------=_Part_1336494_2046715684.1581435137248
Content-Transfer-Encoding: quoted-printable
Thanks everyone! Good stuff. I=E2=80=99m sticking to a redline of just over=
=C2=A06K. I=E2=80=99d also like to keep the 1.65 setup rather than invest i=
n a 1.55 so keep the intel and=C2=A0suggestions coming. The GP3 is a defini=
te contender.=C2=A0
Mike=C2=A0
On Monday, February 10, 2020, 4:07 PM, Geoff Byrne <gkbyrne@optusnet.com.au=
> wrote:
Ditch the 1.65 rockers no good for racingGeoff ByrneTR6 racer down under
Sent from my iPhone
On 11 Feb 2020, at 12:52 am, van.mulders.marcel--- via Fot <fot@autox.team.=
net> wrote:
=EF=BB=BFI also once bought a Goodparts 1.65 rocker roller assembly for a T=
R6 engine, but in the end I had to use a 1.55 roller rocker assembly, also =
from Goodparts, because, with the 1.65, it is difficult to find a race cams=
haft with a=C2=A0 lobe lift that is low enough. With lobes of 8mm or higher=
, I could not find valve springs to cope with the high valve lift. I bought=
a G5 camshaft from Schneider, they call it=C2=A0 the 320-F grind (duration=
is 268=C2=B0 at 0.050", timing is 57-83=C2=A0 =C2=A0 87-53 , installation =
figure is then 103=C2=B0 :is that the same as the G5 grind?) with 0.340"/8.=
6mm cam lift and that makes for a=C2=A0 valve lift of 12.9mm with the 1.55 =
rocker arms. With 1.65 rockers , valve lift would be 14.2mm and I could not=
find valve springs for that lift. The valve springs I used are part no 281=
003-063.20 from Summit (Isky), 320lb/inch spring rate. They recommend 0.45"=
/11.43mm=C2=A0 (1.250" - 0.800"from closed to full open position, so it is =
about 1.4mm more in my engine, but there is no problem concerning=C2=A0 coi=
l binding : the installed height is a 1mm more than 1.250 , the pressure in=
closed position is lower=C2=A0 of course, but still 34kgs (105kgs at full =
lift) an that seems to be enough till 7500 rpmRacetorations have a race cam=
with 7.6mm cam lift, probably that would work with 1.65 rocker arms. I sti=
ll have the 1.65 rocker assembly, it is new and it could work with a road c=
am or any camshaft with a maximum of 8mm cam lift.Marcel
Van: "fot" <fot@autox.team.net>
Aan: "fot" <fot@autox.team.net>
Verzonden: Maandag 10 februari 2020 02:34:27
Onderwerp: [Fot] Camshaft recommendation
Hi all, I=E2=80=99m building a TR6 race engine and have a set of 1.65 ratio=
roller rockers from Goodparts. Any recommendations for a suitable camshaft=
? I will be putting in cam bearings.=C2=A0
Thanks, Mike
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
arcel@telenet.be
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
home.com.au
------=_Part_1336494_2046715684.1581435137248
Content-Transfer-Encoding: quoted-printable
<html xmlns=3D"http://www.w3.org/1999/xhtml"; xmlns:v=3D"urn:schemas-microso=
ft-com:vml" xmlns:o=3D"urn:schemas-microsoft-com:office:office"><head><!--[=
if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>=
96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><bo=
dy>
Thanks everyone! Good stuff. I=E2=80=99m sticking to a redline of just over=
6K. I=E2=80=99d also like to keep the 1.65 setup rather than invest i=
n a 1.55 so keep the intel and suggestions coming. The GP3 is a defini=
te contender. <div><br></div><div>Mike <br><br><br><br><p class=
=3D"yahoo-quoted-begin" style=3D"font-size: 15px; color: #715FFA; padding-t=
op: 15px; margin-top: 0">On Monday, February 10, 2020, 4:07 PM, Geoff Byrne=
<gkbyrne@optusnet.com.au> wrote:</p><blockquote class=3D"iosymail"><=
div id=3D"yiv0747455949"><div>Ditch the 1.65 rockers no good for racing<div=
>Geoff Byrne</div><div>TR6 racer down under<br clear=3D"none"><br clear=3D"=
none"><div dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br clear=
=3D"none"><blockquote type=3D"cite">On 11 Feb 2020, at 12:52 am, van.mulder=
s.marcel--- via Fot <fot@autox.team.net> wrote:<br clear=3D"none"><br=
clear=3D"none"></blockquote></div><blockquote type=3D"cite"><div dir=3D"lt=
r">=EF=BB=BF<div style=3D"font-family:Verdana, Arial, Helvetica, sans-serif=
;font-size:10pt;color:#000000;"><div>I also once bought a Goodparts 1.65 ro=
cker roller assembly for a TR6 engine, but in the end I had to use a 1.55 r=
oller rocker assembly, also from Goodparts, because, with the 1.65, it is d=
ifficult to find a race camshaft with a lobe lift that is low enough.=
With lobes of 8mm or higher, I could not find valve springs to cope with t=
he high valve lift. I bought a G5 camshaft from Schneider, they call it&nbs=
p; the 320-F grind (duration is 268=C2=B0 at 0.050", timing is 57-83 =
87-53 , installation figure is then 103=C2=B0 :is that the same as t=
he G5 grind?) with 0.340"/8.6mm cam lift and that makes for a valve l=
ift of 12.9mm with the 1.55 rocker arms. With 1.65 rockers , valve lift wou=
ld be 14.2mm and I could not find valve springs for that lift. The valve sp=
rings I used are part no 281003-063.20 from Summit (Isky), 320lb/inch sprin=
g rate. They recommend 0.45"/11.43mm (1.250" - 0.800"from closed to f=
ull open position, so it is about 1.4mm more in my engine, but there is no =
problem concerning coil binding : the installed height is a 1mm more =
than 1.250 , the pressure in closed position is lower of course, but =
still 34kgs (105kgs at full lift) an that seems to be enough till 7500 rpm<=
/div><div>Racetorations have a race cam with 7.6mm cam lift, probably that =
would work with 1.65 rocker arms. I still have the 1.65 rocker assembly, it=
is new and it could work with a road cam or any camshaft with a maximum of=
8mm cam lift.</div><div>Marcel</div><div><br clear=3D"none"></div><hr id=
=3D"yiv0747455949zwchr"><div><b>Van: </b>"fot" <fot@autox.team.net><b=
r clear=3D"none"><b>Aan: </b>"fot" <fot@autox.team.net><br clear=3D"n=
one"><b>Verzonden: </b>Maandag 10 februari 2020 02:34:27<br clear=3D"none">=
<b>Onderwerp: </b>[Fot] Camshaft recommendation<br clear=3D"none"></div><di=
v><br clear=3D"none"></div><div>
Hi all, I=E2=80=99m building a TR6 race engine and have a set of 1.65 ratio=
roller rockers from Goodparts. Any recommendations for a suitable camshaft=
? I will be putting in cam bearings. <div><br clear=3D"none"><div>Than=
ks, Mike<br clear=3D"none"><br clear=3D"none"><br clear=3D"none"></div></di=
v>
<br clear=3D"none">_______________________________________________<br clear=
=3D"none">fot@autox.team.net<br clear=3D"none"><br clear=3D"none">http://ww=
w.fot-racing.com<br clear=3D"none"><br clear=3D"none">Donate: http://www.te=
am.net/donate.html<br clear=3D"none">Archive: http://autox.team.net/archive=
http://www.team.net/pipermail/fot<br clear=3D"none">Unsubscribe/Manage: ht=
tp://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet.be<div c=
lass=3D"yiv0747455949yqt5723059911" id=3D"yiv0747455949yqtfd51209"><br clea=
r=3D"none"></div></div></div><div class=3D"yiv0747455949yqt5723059911" id=
=3D"yiv0747455949yqtfd38997"><span>________________________________________=
_______</span><br clear=3D"none"><span>fot@autox.team.net</span><br clear=
=3D"none"><span></span><br clear=3D"none"><span>http://www.fot-racing.com</=
span><br clear=3D"none"><span></span><br clear=3D"none"><span>Donate: http:=
//www.team.net/donate.html</span><br clear=3D"none"><span>Archive: http://a=
utox.team.net/archive http://www.team.net/pipermail/fot</span></div><br cle=
ar=3D"none"><span>Unsubscribe/Manage: http://autox.team.net/mailman/options=
/fot/gkbyrne@optushome.com.au</span><div class=3D"yiv0747455949yqt572305991=
1" id=3D"yiv0747455949yqtfd70749"><br clear=3D"none"><span></span><br clear=
=3D"none"><span></span><br clear=3D"none"></div></div></blockquote></div></=
div></div><blockquote></blockquote></blockquote></div>
</body></html>
------=_Part_1336494_2046715684.1581435137248--
--===============4633791565989662857==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
--===============4633791565989662857==--
|