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Re: high RPM WOT sputter

To: Gonridn2@aol.com, datsun-roadsters@autox.team.net
Subject: Re: high RPM WOT sputter
From: Keith0alan@aol.com
Date: Mon, 23 Sep 2002 22:13:59 EDT
Troy,

       Check the carbs. Are the throttle plates going past WOT? Make sure 
they are not going over and starting to close over backwards. Might be a good 
use for an oxygen sensor in the exhaust to see if the mixture is off at WOT 
indicating some needle work needing done.

                                                 keith


> I had my '65 1500 out at the track Saturday.  She ran good, no leaks, no 
> overheats (it was 105F), no crashes.  It's a high RPM race motor with 
> Hitachi 
> carbs.  From 5500-7000 RPM, it sputters at WOT only. It clears up 
> immediately 
> when I let off the throttle just a touch.  When it starts to sputter, it 
> will 
> no longer accelerate, when I let off a little, it accelerates 200-300 RPM 
> instantly.  I run a MSD 7000 RPM rev-limiter, it doesn't appear to be 
> malfunctioning.  Plugs, points, timing all seem correct.  108 octane 
> race-gas.  Ideas?
> Troy

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