Very interesting because that is exactly the problem I encountered. I wound
up with two low pressure pumps feeding a surge tank then a water trap then to
two electric Lucas pumps. (left the filter system out of this explanation.)
----- Original Message -----
From: Geoffrey Byrne
To: Chuck Arnold ; fot
Sent: Friday, June 10, 2005 6:04 AM
Subject: Re: Tr6 PI and racing
Chuck
There are 3 of us racing TR6 PI on the east coast in Aus . Our Historic Car
Race rules do not allow much mods ie we have to run the PI or the USA spec
cars with strombergs. the biggest problem we have encountered is fuel pick
up. As you start to punt the car hard. We have fixed this by the following
mods
1 install a second fuel tank outlet on the right side of the tank to the
right of the baffle plate
2 run the two outlets to the filter under the tank
3 run two outlets from the filter through two low pressure fuel pumps
4 feed the fuel pumps into a surge tank about 3inch dia and 12 inch high on
the left hand shelf to the left of the tank
5 install the lucas pump undet the tank below the surgetank
6 run a 3/8 line from the surge tank to the inlet of the lucas pump .
7 run a overflow line from the surge tank to the fuel tank return line from
the PRV .
With this you can run the tank dry. With out you get fuel starvation to the
pump on hard cornering with a full tank.
Without this set up we get fuel starvation on hard left hand corners which
create real drama with a MGB up the bum
Contact me off list if you want more details . Our TR6's are quite quick
and
hold theirn own in very impressive company
Geoff Byrne
----- Original Message -----
From: "Chuck Arnold" <chuck.arnold@oracle.com>
To: "fot" <fot@autox.team.net>
Sent: Friday, June 10, 2005 1:48 AM
Subject: Tr6 PI and racing
> I am setting up a TR250 for racing. Have decided to use PEtrol
> Injection. So now the questions begin [I know Charly Mitchel here in
> Seattle area. He is running PI this season in his TR6. He has had a
> lot of contact with Kas and I hope to benefit from his learnins.
> None-the-less, I thought I would quesry the august group about any PI
> experiences, modifications, etc.
>
> I located a whole PI system from a Mr. Priestly in NZ. $750 US
> inclucing shipping.
>
> Does anyone have have or know of any written resources [or URLs]
> regarding modifying/imporving PI for competition purposes? Saw one
> where someone suggested using one throttle butterfly before the plenum
> chamber and eliminating the six butterflies in the throttle bodies
> [seems reasonable -- no sync problem and simple throttle control.] Do
> n ot know if this would be legal for 1969 racing specs.
>
> I know Kas has suggests getting the injectors as far away as possible --
> even outside the butterflies. Has anyone had any experience with this?
>
> Other ideas/enlightenments other than replacing the Lucas fuel pump with
> a more reliable one [Mallory?].
>
> Thanks,
> Chuck
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