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Lyman,
I have always had good luck while keeping the fuel pressure as close to 3
psi as possible. Larger diameter fuel line may help with fuel flow while
keeping pressure down.
P.J.
On Mon, Apr 7, 2025 at 10:40=E2=80=AFPM Lyman Scherer via Fot <fot@autox.te=
am.net>
wrote:
>
> Sent from my iPhone
>
> Begin forwarded message:
>
> *From:* Lyman Scherer <lymanazhd@yahoo.com>
> *Date:* April 7, 2025 at 9:21:02=E2=80=AFPM MST
> *To:* Dave Riddle <Dave@microworks.net>
> *Subject:* *Re: [Fot] Video from yesterday at Arizona Motorsports Park*
>
> =EF=BB=BFIt is intake leakage.. with stock gasket (stainless covered with=
fiber
> material) have blown #4 and #1 ports at different events.
> Have used same gasket on same BajaTR3 engine for 7 years, dozens of
> events, 1000=E2=80=99s of miles without failure!
> Variable is: TR4 intake and headers that came with #65 car.
> Systems checked: solid 150+ compression, plugs great! cones grey w/ no
> oiling, valve clearances not changing set .016=E2=80=9D intakes .018=E2=
=80=9D exhaust,
> timing & advance ok 20=E2=80=99 idle 32=E2=80=99 advance, carb jetting fr=
om past only
> richened main.
> Solution? Crappy sealing surface clamping of intake/exhaust stud hardware=
.
> Or fab soft copper gasket?
> Sent from my iPhone
>
> On Apr 7, 2025, at 5:54=E2=80=AFPM, Dave Riddle via Fot <fot@autox.team.=
net>
> wrote:
>
> =EF=BB=BF
>
> Yes on the Webbers. Fuel pressure seemed good as did the color of th eplu=
gs
>
>
>
>
>
> Dave Riddle
>
> 602.692.5276
>
>
>
> *From:* David Gott <triumphsix@yahoo.com>
> *Sent:* Monday, April 7, 2025 4:47 PM
> *To:* Dave Riddle <dave@microworks.net>; FOT (fot@autox.team.net) <
> fot@autox.team.net>
> *Subject:* Re: [Fot] Video from yesterday at Arizona Motorsports Park
>
>
>
> Just because I=E2=80=99ve missed this myself and watched others do the sa=
me; check
> timing. I take it you are running webbers if you mention jetting?
> Curious about fuel pressure=E2=80=A6
>
>
>
> Normally would sound like detonation if you lose midrange; possible if yo=
u
> have an intake leak even with low compression. What do the plugs look li=
ke?
>
>
>
> I=E2=80=99m likely stating the obvious things, but sometimes the simple i=
s
> overlooked=E2=80=A6.
>
>
>
> Hope that helps,
>
> Dave Gott
>
> Sent from Yahoo Mail for iPhone
> <https://mail.onelink.me/107872968?pid=3Dnativeplacement&c=3DGlobal_Acqui=
sition_YMktg_315_Internal_EmailSignature&af_sub1=3DAcquisition&af_sub2=3DGl=
obal_YMktg&af_sub3=3D&af_sub4=3D100000604&af_sub5=3DEmailSignature__Static_=
>
>
>
>
> On Monday, April 7, 2025, 7:39 PM, Dave Riddle via Fot <fot@autox.team.ne=
t>
> wrote:
>
> https://youtu.be/MQjU3jhW7Y8
>
>
>
> Took the TR4 out in an HPDE3 Session to test how she=E2=80=99s handling. =
I like
> how she handles but we have developed a lean condition. Revs fall flat
> between 4-5k then come back between 5-6k. Changed jetting and that did n=
ot
> really help. Neither did hotted plugs. Lyman checked valve adjustments.
> That was not the issue either. It is odd however that we are blowing out
> the intake gaskets but no issue with the exhaust gaskets.
>
>
>
> Lyman figures we are running about 90 hp at the wheel. Hopefully putting
> it on a dyno next month will help find the lean issue and maybe some more
> hp from this low compression engine. This is the motor (and 5 speed
> Toyota) that was in the Baja Car which needs low compression to deal with
> low quality fuel in Mexico. This fall a rebuilt high compression engine
> along with a 4 speed Triumph box will be installed.
>
>
>
> <http://www.microworks.net/>
> <image001.jpg> <http://www.microworks.net/>
>
> *Dave Riddle*
>
> Business IT Consulting
>
> Office: 480.610.8234
>
> Cell: 602.692.5276
>
> eMail: dave@microworks.net
>
> Website: http://www.microworks.net
>
> <https://partner.microsoft.com/en-US/>
> <image002.png> <https://partner.microsoft.com/en-US/>
> <image003.png>
> <https://www.acronis.com/en-us/>
> <image004.png>
> <https://www.clio.com/>
> <image005.png>
> <https://www.citycommunications.com/>
>
>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
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>
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>
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>
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>
> Donate: http://www.team.net/donate.html
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>
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Lyman,<div>=C2=A0 I have always had good luck while keepin=
g the fuel pressure as close to 3 psi as possible. Larger diameter fuel lin=
e may help with fuel flow while keeping pressure down.</div><div>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 P.J.</div></div><br=
><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D=
"gmail_attr">On Mon, Apr 7, 2025 at 10:40=E2=80=AFPM Lyman Scherer via Fot =
<<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>> wrote:=
<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8=
ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"aut=
o"><br id=3D"m_9133078507695604019lineBreakAtBeginningOfSignature"><div dir=
=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br>Begin forwarded mess=
age:<br><br></div><blockquote type=3D"cite"><div dir=3D"ltr"><b>From:</b> L=
yman Scherer <<a href=3D"mailto:lymanazhd@yahoo.com"; target=3D"_blank">l=
ymanazhd@yahoo.com</a>><br><b>Date:</b> April 7, 2025 at 9:21:02=E2=80=
=AFPM MST<br><b>To:</b> Dave Riddle <<a href=3D"mailto:Dave@microworks.n=
et" target=3D"_blank">Dave@microworks.net</a>><br><b>Subject:</b> <b>Re:=
[Fot] Video from yesterday at Arizona Motorsports Park</b><br><br></div></=
blockquote><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BFIt is intake=
leakage.. with stock gasket (stainless covered with fiber material) have b=
lown #4 and #1 ports at different events.<div>=C2=A0Have used same gasket o=
n same BajaTR3 engine for 7 years, dozens of events, 1000=E2=80=99s of mile=
s without failure!</div><div>Variable is: TR4 intake and headers that came =
with #65 car.</div><div>Systems checked: solid 150+ compression, plugs grea=
t! cones grey w/ no oiling, valve clearances not changing set .016=E2=80=9D=
intakes .018=E2=80=9D exhaust, timing & advance ok 20=E2=80=99 idle 32=
=E2=80=99 advance, carb jetting from past only richened main.</div><div>Sol=
ution? Crappy sealing surface clamping of intake/exhaust stud hardware. Or =
fab soft copper gasket?<br id=3D"m_9133078507695604019lineBreakAtBeginningO=
fSignature"><div dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br>=
<blockquote type=3D"cite">On Apr 7, 2025, at 5:54=E2=80=AFPM, Dave =C2=A0Ri=
ddle via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fo=
t@autox.team.net</a>> wrote:<br><br></blockquote></div><blockquote type=
=3D"cite"><div dir=3D"ltr">=EF=BB=BF
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">Yes on the Webbers. Fuel pressure seemed good as did the color of=
th eplugs<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">Dave Riddle<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif">602.692.5276<u></u><u></u></span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,sa=
ns-serif"><u></u>=C2=A0<u></u></span></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11pt;font-family:Calibri=
,sans-serif">From:</span></b><span style=3D"font-size:11pt;font-family:Cali=
bri,sans-serif"> David Gott <<a href=3D"mailto:triumphsix@yahoo.com"; tar=
get=3D"_blank">triumphsix@yahoo.com</a>>
<br>
<b>Sent:</b> Monday, April 7, 2025 4:47 PM<br>
<b>To:</b> Dave Riddle <<a href=3D"mailto:dave@microworks.net"; target=3D=
"_blank">dave@microworks.net</a>>; FOT (<a href=3D"mailto:fot@autox.team=
.net" target=3D"_blank">fot@autox.team.net</a>) <<a href=3D"mailto:fot@a=
utox.team.net" target=3D"_blank">fot@autox.team.net</a>><br>
<b>Subject:</b> Re: [Fot] Video from yesterday at Arizona Motorsports Park<=
u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Just because I=E2=80=99ve missed this myself and wat=
ched others do the same; check timing. =C2=A0 =C2=A0I take it you are runni=
ng webbers if you mention jetting?=C2=A0 Curious about fuel pressure=E2=80=
=A6<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Normally would sound like detonation if you lose mid=
range; possible if you have an intake leak even with low compression.=C2=A0=
What do the plugs look like?<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I=E2=80=99m likely stating the obvious things, but s=
ometimes the simple is overlooked=E2=80=A6.<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Hope that helps,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12pt">Dave Gott<br>
<br>
<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><a href=3D"https://mail.onelink.me/107872968?pid=3Dn=
ativeplacement&c=3DGlobal_Acquisition_YMktg_315_Internal_EmailSignature=
&af_sub1=3DAcquisition&af_sub2=3DGlobal_YMktg&af_sub3=3D&af=
_sub4=3D100000604&af_sub5=3DEmailSignature__Static_" target=3D"_blank">=
<span style=3D"font-size:9pt">Sent
from Yahoo Mail for iPhone</span></a><u></u><u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p style=3D"margin-top:0in"><span style=3D"font-size:11.5pt;color:rgb(113,9=
5,250)">On Monday, April 7, 2025, 7:39 PM, Dave Riddle via Fot <<a href=
=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net</a>>=
wrote:<u></u><u></u></span></p>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<div id=3D"m_9133078507695604019yiv7680026821">
<div>
<div>
<p><span style=3D"font-size:11pt"><a href=3D"https://youtu.be/MQjU3jhW7Y8"; =
target=3D"_blank">https://youtu.be/MQjU3jhW7Y8</a></span><u></u><u></u></p>
<p><span style=3D"font-size:11pt">=C2=A0</span><u></u><u></u></p>
<p><span style=3D"font-size:11pt">Took the TR4 out in an HPDE3 Session to t=
est how she=E2=80=99s handling. I like how she handles but we have develope=
d a lean condition.=C2=A0 Revs fall flat between 4-5k then come back betwee=
n 5-6k.=C2=A0 Changed
jetting and that did not really help. Neither did hotted plugs. Lyman chec=
ked valve adjustments. That was not the issue either. It is odd however tha=
t we are blowing out the intake gaskets but no issue with the exhaust gaske=
ts.</span><u></u><u></u></p>
<p><span style=3D"font-size:11pt">=C2=A0</span><u></u><u></u></p>
<p><span style=3D"font-size:11pt">Lyman figures we are running about 90 hp =
at the wheel. Hopefully putting it on a dyno next month will help find the =
lean issue and maybe some more hp from this low compression engine.=C2=A0 T=
his is
the motor (and 5 speed Toyota) that was in the Baja Car which needs low co=
mpression to deal with low quality fuel in Mexico.=C2=A0 This fall a rebuil=
t high compression engine along with a 4 speed Triumph box will be installe=
d.</span><u></u><u></u></p>
<p><span style=3D"font-size:11pt">=C2=A0</span><u></u><u></u></p>
<p><a href=3D"http://www.microworks.net/"; target=3D"_blank"><span style=3D"=
font-size:11pt;text-decoration:none"></span></a></p><div><a href=3D"http://=
www.microworks.net/" target=3D"_blank"><image001.jpg></a></div><u></u=
><u></u><p></p>
<p><b>Dave Riddle</b><u></u><u></u></p>
<p><span style=3D"font-size:11pt">Business IT Consulting</span><u></u><u></=
u></p>
<p><span style=3D"font-size:11pt">Office: 480.610.8234</span><u></u><u></u>=
</p>
<p><span style=3D"font-size:11pt">Cell: 602.692.5276</span><u></u><u></u></=
p>
<p><span style=3D"font-size:11pt">eMail: <a href=3D"mailto:dave@microworks.=
net" target=3D"_blank">
<span style=3D"color:rgb(123,120,255)">dave@microworks.net</span></a></span=
><u></u><u></u></p>
<p><span style=3D"font-size:11pt">Website: <a href=3D"http://www.microworks=
.net/" target=3D"_blank">
<span style=3D"color:rgb(123,120,255)">http://www.microworks.net</span></a>=
</span><u></u><u></u></p>
<p><a href=3D"https://partner.microsoft.com/en-US/"; target=3D"_blank"><span=
style=3D"font-size:11pt;color:windowtext;text-decoration:none"></span></a>=
</p><div><a href=3D"https://partner.microsoft.com/en-US/"; target=3D"_blank"=
><image002.png></a></div><a href=3D"https://www.acronis.com/en-us/"; t=
arget=3D"_blank"><span style=3D"font-size:11pt;text-decoration:none"><div>&=
lt;image003.png></div></span></a><a href=3D"https://www.clio.com/"; targe=
t=3D"_blank"><span style=3D"font-size:11pt;text-decoration:none"><div><i=
mage004.png></div></span></a><a href=3D"https://www.citycommunications.c=
om/" target=3D"_blank"><span style=3D"font-size:11pt;color:windowtext;text-=
decoration:none"><div><image005.png></div></span></a><u></u><u></u><p=
></p>
<p>=C2=A0<u></u><u></u></p>
</div>
</div>
</div>
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</blockquote>
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