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Sent from my iPhone
Begin forwarded message:
Date: October 15, 2016 at 10:30:51 AM CDT
Subject: Stutter at 4K rpm
Two races ago I went off track and bent my exhaust pipe enough to break the=
welded joint near the muffler. In the interest of time, I cut the exhaust =
at the muffler and secured the pipe to the frame.
At the last race, I noticed the car would backfire at deceleration which I =
am not surprised but I also noticed a stutter around 4-5k rpm.
At NOLA this weekend it is more pronounced and comes in when shifting hard =
from 3rd to 4th. After 5k, it clears up and pulls normally.
It doesn't seem to be affected by turns and more related to full throttle v=
s easing into the gas.
Backpressure from the loss of muffler or unrelated issues?
1300 spitfire with single Weber 40.
Sent from my iPhone
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Sent from my iPhone</div>
<div><br>
Begin forwarded message:<br>
<br>
</div>
<blockquote type=3D"cite">
<div><b>From:</b> <<a href=3D"mailto:explore8@outlook.com";>explore8@outl=
ook.com</a>><br>
<b>Date:</b> October 15, 2016 at 10:30:51 AM CDT<br>
<b>To:</b> <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>=
><br>
<b>Subject:</b> <b>Stutter at 4K rpm</b><br>
<br>
</div>
</blockquote>
<blockquote type=3D"cite">
<div><span>Two races ago I went off track and bent my exhaust pipe enough t=
o break the welded joint near the muffler. In the interest of time, I cut t=
he exhaust at the muffler and secured the pipe to the frame.</span><br>
<span></span><br>
<span>At the last race, I noticed the car would backfire at deceleration wh=
ich I am not surprised but I also noticed a stutter around 4-5k rpm.
</span><br>
<span></span><br>
<span>At NOLA this weekend it is more pronounced and comes in when shifting=
hard from 3rd to 4th. After 5k, it clears up and pulls normally.</span><br=
>
<span></span><br>
<span>It doesn't seem to be affected by turns and more related to full thro=
ttle vs easing into the gas.</span><br>
<span></span><br>
<span>Backpressure from the loss of muffler or unrelated issues?</span><br>
<span></span><br>
<span>1300 spitfire with single Weber 40.</span><br>
<span></span><br>
<span>Sent from my iPhone</span></div>
</blockquote>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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