Chris,
Sounds like you had some fun and nothing broke which is the best part.
What kinda carbs are you running? Cam?
Mike
----- Original Message -----
From: "Christopher Coker" <cfcoker@home.com>
To: "Datsun Roadster Mailing List" <datsun-roadsters@autox.team.net>
Sent: Monday, July 23, 2001 5:30 PM
Subject: July 21-22 Race weekend report
> Howdy Roadster Fans,
>
> I had the G Prod. 1600 race car out at Waterford Hills this past weekend.
> It was hot, humid, eventful, and successful.
>
> My carbs have never been quite up to par, so I was going to try and play
> around with the setup a little. For the practice/qualifying session I
tried
> out some N-17 needles with the .100 jets. The car sounded absolutely sick
> until I got past 6000 rpm, and then it would run decent. I was three
> seconds a lap slower, but I was able to home in a little on why the car
> wouldn't run past 6000 rpm with the other needle/jet setup. I qualified
> 18th out of 19 cars.
>
> For the race on Saturday, I put the old .090 jets back in, and decided to
> try some FX needles, which are richer in the top end than the M-39's I'd
> been originally using. My lap times were back to normal, but I was also
> still having the same carb problems. I passed three people on the track,
> and two cars ahead of me dropped out, including the only other car in G
> Production. On the last lap it started to rain, which made for some
> interesting driving considering I was on full slicks!
>
> Sunday the weather was still hot and humid. I tried playing around with
> carb dashpots, but this didn't affect things. So, I'm convinced I need a
> different needle profile, which I'll probably wind up making myself. I
> finished the race ahead of my competition who was struggling with
> overheating problems in his Fiat X1/9. I battled it out with a Spec.
Racer
> most of the race. I was much quicker than him through the corners and
under
> braking, but under power he had the advantage. That will be less of an
> issue once my carbs are properly sorted out.
>
> For the final race on Sunday, I decided to lean the carbs out a bit, to
see
> if that would alleviate the low rpm bogging, and to shift early to keep
from
> running the car too lean at top end. It was a fairly uneventful race once
> we all got around the spec racer spinning in the middle of the track at
the
> start! Thanks to my Datsun's reliability (and the lack of my
competition's
> reliability), I took 1st place in class for the Feature race on Sunday.
>
> My next race weekend will be Sept. 8-9 at Waterford Hills. Hopefully,
I'll
> have some time between now and then to work on my carbs. I'm planning on
> installing an O2 sensor, and there's a few small things here and there
that
> need to be fixed.
>
> My lap times have pretty much stabilized. In order for me to go faster I
> need to fix the carbs, and get more power out of the engine.
>
> Happy Roadstering,
> --
> Chris Coker
> 69 1600 SPL311-24529 <http://members.home.net/cfcoker/roadster.html>
> 6? 1600 GP Race Car <http://members.home.net/cfcoker/racecar.html>
> Royal Oak, MI
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