Re: [TR] carb tuning

[DAVID MASSEY <dave1massey@cs.com>]

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The lift-the-piston method of tuning only works on pre-emissions carbs (SU)=
.=C2=A0 That is because the SU needles were profiled to do that.=C2=A0 Howe=
ver that makes them run too rich to meet US emissions standards.
The factory method is to use a gas sniffer.=C2=A0 So, yes, you should borro=
w a Gunson or similar device.
Dave

Sent from AOL on Android=20
=20
  On Sat, Sep 21, 2024 at 17:59, dave northrup<dave@ranteer.com> wrote:   =
=20
i have a 72 TR6 with triple carbs.=C2=A0 the engine now has about 400 miles=
 on it, and i am pretty sure the carbs are too rich.




i am aware of the lift-a--piston method of tuning the carbs.




i am wondering if it is worth getting a gunson tuning setup or what is the =
best method for ensuring the carbs are correctly tuned.




i know i need to ascertain the valve gap and timing first.
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Archive: http://www.team.net/pipermail/triumphs=C2=A0 http://www.team.net/a=
rchive

sey@cs.com
 =20

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The lift-the-piston method of tuning only works on pre-emissions carbs 
(SU).&nbsp; That is because the SU needles were profiled to do that.&nbsp; 
However that makes them run too rich to meet US emissions 
standards.<div><br></div><div>The factory method is to use a gas sniffer.&nbsp; 
So, yes, you should borrow a Gunson or similar 
device.</div><div><br></div><div>Dave<br><br><div 
id="ymail_android_signature"><a id="ymail_android_signature_link" 
href="https://play.google.com/store/apps/details?id=com.aol.mobile.aolapp";>Sent 
from AOL on Android</a></div> <br> <blockquote style="margin: 0 0 20px 0;"> 
<div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Sat, Sep 
21, 2024 at 17:59, dave northrup</div><div>&lt;dave@ranteer.com&gt; 
wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; 
border-left: 1px solid #6D00F6;"> <div id="yiv2097059035">

 


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<div id="yiv2097059035divtagdefaultwrapper" 
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<p>i have a 72 TR6 with triple carbs.&nbsp; the engine now has about 400 miles 
on it, and i am pretty sure the carbs are too rich.</p>
<p><br>
</p>
<p>i am aware of the lift-a--piston method of tuning the carbs.</p>
<p><br>
</p>
<p>i am wondering if it is worth getting a gunson tuning setup or what is the 
best method for ensuring the carbs are correctly tuned.</p>
<p><br>
</p>
<p>i know i need to ascertain the valve gap and timing first.</p>
</div>
</div>

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