[Roadsters] Roadster cuts out at 3k rpms

[shas1983 at netzero.net]

Confirmed fuel starvation. All ignition items check. Timing is good. No vacuum
leaks.Perfect fuel pressure. Engine will climb past 3000 if I pull the choke
full lowering the jets.
Pulled the screens at the floats. Cleaned them, but they we not bad. I think
my floats are not set correctly. My float bowls have what I believe are called
gross jets. These have a ball valve instead of the normal pin. They flow more
fuel but seem to close a bit quicker than the pins. Does anyone know if they
need to be set differently than the normal floats?
Thanks
Jon Carlisle

---------- Original Message ----------
From: Pat Horne <pat at hornesystemstx.com>
To: "shas1983 at netzero.net" <shas1983 at netzero.net>
Cc: vstrazzabosco at yahoo.com, datsun-roadsters at autox.team.net
Subject: Re: [Roadsters] Roadster cuts out at 3k rpms
Date: Mon, 12 Apr 2010 22:06:30 -0500

Jon,

Put a vacuum gauge on it and watch it when the engine starts to sputter.
If it drops, it is probably fuel related. if it stays up, check ignition.

Make sure the polarity of the coil is correct. the terminal marked "-"
should go to the distributor.

Peace,
Pat

Thusly spake shas1983 at netzero.net, On 4/12/2010 8:55 PM:
> We have been debugging our recently restored 69 2000 with SU's and B cam.
Just
> got floats and needles corrected, timing set, new fuel pump,new non-smog
> distributor, etc..  Drove for the first time in 25 years. Runs good up to
> around 3000 rpms and sputters/doesnt want to accelerate past 3 M under
load.
> Bought new coil thinking that was the problem. Car now cranks instantly and
> definitely idles better with new coil. Still doesn't want to take gas past
3M
> rpms. Thought it was ignition related but now wondering if it could be
carbs.
> Any suggestions?
>
> Thanks
>
> Jon Carlisle
>
>
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--
Pat Horne, Owner, Horne Systems
(512) 797-7501 Voice 5026 FM 2001
Pat at HorneSystemsTx.com Lockhart, TX 78644-4443
www.hornesystemstx.com
-- We support Habitat for Humanity - a hand UP, not a hand OUT --

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