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Some of the float jets (needle valves) do have too small of a diameter,
resulting in a lean condition at the top.
Make a significant rich adjustment and if it doesn't affect the lean run, it is
most likely your problem.
If it goes rich, then it's passing enough fuel to the bowls.
HTH.
Glen
-----Original Message-----
From: damys <damys@charter.net>
To: 'fot@autox.team.net' <fot@autox.team.net>
Sent: Thu, Oct 15, 2015 11:18 am
Subject: [Fot] GT6 Burnt plugs
Finally got the GT6 back together and had it at Brainerd for two track days.
First day still had overheating issues even with the oil cooler, external
octopus oiling and scirocco rad. Also had a vibration in the rear.
Then we fabricated a full rad shroud and re-did one of the 240Z rear axles.
Lost all but a very minor vibration that show up at around 100 MPH which might
just be from driving an 1800 lb car that fast.
Cured the overheating and actually had to tape the rad and oil cooler. After
many laps the water was at 200 and the oil at 220. Outside temp 65-70 degrees.
Our new problem is we burned the electrodes off of number 1 and 4 plugs. The
other four looked a little lean, but not bad. We are running 1.50 Strombergs.
It seems to me that the stock intake is starving 1 and 4.
I've read that Kas drilled the float jets to cure starvation at high RPM's, but
what about the main jets. Will this cause serious bog at mid-RPM's. Also
would reworking the number 1 and 4 intake runners help the problem. We are
maxing out at 6000 RPM's.
As for the minor vibration, we have a rebuilt, fully welded 3:89.
Planning on Elkhart in the Spring. Any ideas?
Thanks
Dave and Alex Amys
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Donate:
Archive: http://www.team.net/archive
Forums:
http://www.team.net/forums
http://autox.team.net/mailman/options/fot/fubog1@aol.com
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<font color='black' size='2' face='Arial, Helvetica, sans-serif'>S<font
size="2">ome of the float jets (needle valves) do have too small of a diameter,
resulting in a lean condition at the top.<br>
Make a significant rich adjustment and if it doesn't affect the lean run, it is
most likely your problem.<br>
If it goes rich, then it's passing enough fuel to the bowls.<br>
HTH.<br>
Glen <br>
</font>
<div> <br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----<br>
From: damys <damys@charter.net><br>
To: 'fot@autox.team.net' <fot@autox.team.net><br>
Sent: Thu, Oct 15, 2015 11:18 am<br>
Subject: [Fot] GT6 Burnt plugs<br>
<br>
<div id="AOLMsgPart_1.2_34874352-eb19-4e18-8c9e-ab2f93edee1c">
<div class="aolReplacedBody">
<div>Finally got the GT6 back together and had it at Brainerd for two track
days. First day still had overheating issues even with the oil cooler,
external octopus oiling and scirocco rad. Also had a vibration in the
rear. </div>
<div>Then we fabricated a full rad shroud and re-did one of the 240Z rear
axles. Lost all but a very minor vibration that show up at around 100 MPH
which might just be from driving an 1800 lb car that fast. </div>
<div>Cured the overheating and actually had to tape the rad and
oil cooler. After many laps the water was at 200 and the oil at
220. Outside temp 65-70 degrees.</div>
<div>Our new problem is we burned the electrodes off of number 1 and 4 plugs.
The other four looked a little lean, but not bad. We are running 1.50
Strombergs.</div>
<div>It seems to me that the stock intake is starving 1 and 4. </div>
<div>I've read that Kas drilled the float jets to cure starvation at
high RPM's, but what about the main jets. Will this cause serious bog at
mid-RPM's. Also would reworking the number 1 and 4 intake runners help
the problem. We are maxing out at 6000 RPM's.</div>
<div>As for the minor vibration, we have a rebuilt, fully welded
3:89. </div>
<div>Planning on Elkhart in the Spring. Any ideas?</div>
<div>Thanks</div>
<div>Dave and Alex Amys</div>
<div><br>
</div>
<div> </div>
</div>
</div>
<div id="AOLMsgPart_2_00aeac30-5bde-4d1f-a601-ededca83af40" style="margin:
0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color:
#000;background-color: #fff;">
<pre style="font-size: 9pt;"><tt>_______________________________________________
<a
removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="mailto:fot@autox.team.net";>fot@autox.team.net</a>
<a
removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="http://www.fot-racing.com";
target="_blank">http://www.fot-racing.com</a>
Donate:
<a
removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="http://www.team.net/donate.html";
target="_blank">http://www.team.net/donate.html</a>
Archive: <a
removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="http://www.team.net/archive";
target="_blank">http://www.team.net/archive</a>
Forums:
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removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="http://www.team.net/forums";
target="_blank">http://www.team.net/forums</a>
<a
removedlink__0c3f711a-69a1-4e4a-9f5a-409cc738cca0__href="http://autox.team.net/mailman/options/fot/fubog1@aol.com";
target="_blank">http://autox.team.net/mailman/options/fot/fubog1@aol.com</a>
</tt></pre>
</div>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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