[Fot] fuel pressure gauges with isolators

[John Styduhar]

If you want to run a fuel pressure gauge in the cockpit, the isolator
provides a fuel barrier for safety reasons.  It's basically a diaphragm
(usually mounted in the engine compartment) with the gasoline pressure line
on one side and a non-flammable liquid to pressurize the gauge on the
other.

On Fri, Mar 1, 2019 at 11:48 AM Brian Schirano via Fot <fot at autox.team.net>
wrote:

> Hi Guys
>
> very interesting talk on the EGT probes. A side bar came up on fuel
> pressure gauges with isolators.. I have the gauge, but isolators? What is
> this?
> I have a single braided line up through the tub from elec pump and filter
> in the rear to regulator and gauge under the bonnet, line then splits to
> the carbs.
> Education please.
>
> Thanks
> Brian
>
> 26A GT6+, 28 TR6
> Brian Schirano
> 585-305-0349 Cell
> BSchirano at yahoo.com
>
>
> On Thursday, February 28, 2019, 10:52:17 PM EST, vfracing--- via Fot <
> fot at autox.team.net> wrote:
>
>
> I second the fuel pressure recommendation.  For the $$$ I spent last year
> chasing what I thought was an ignition problem I could have installed two
> fuel pressure gauges with isolators!!!  Not to mention the lost laps in the
> Kastler Cup....
>
> Phil Gott
>
>
> -----Original Message-----
> From: Tony Drews via Fot <fot at autox.team.net>
> To: fot <fot at autox.team.net>
> Sent: Thu, Feb 28, 2019 3:12 pm
> Subject: Re: [Fot] EGT gauge installation
>
> I've always heard that if you have a balance tube between front and rear
> carb that you want to run in 1 and 4 so you can better isolate which carb
> you want to adjust.
> I have mine in 1 and 4 but run webers so no balance tube.  I see up to
> 1450 F at the end of long straights.  Much more than that and I start to
> transfer aluminum from the piston to the cylinder walls.  I think there's
> some variation in temp readings between different probes and gauges, I
> don't know what the accuracy really is.
> It's a great troubleshooting tool when the car starts to run like crap.
> Another helpful tools is a fuel pressure gauge (with isolator so you don't
> pipe gas into the passenger compartment).  Pressure too high overruns the
> floats.  To low and you've got something funny with the feed like a
> regulator / pump going bad or you forgot to put gas in the car.
> - Tony
> On 2/27/2019 6:10 PM, Barr, Scott via Fot wrote:
>
> Interesting – why not 1 and 4 or 2 and 3?
>
> Scott (B.)
>
> *From:* Fot <fot-bounces at autox.team.net> <fot-bounces at autox.team.net> *On
> Behalf Of *Rick Parent via Fot
> *Sent:* Wednesday, February 27, 2019 2:20 PM
> *To:* John Styduhar <johnstydo at gmail.com> <johnstydo at gmail.com>; Terry
> Stetler <tlizzard at msn.com> <tlizzard at msn.com>
> *Cc:* Friends of Triumph <fot at autox.team.net> <fot at autox.team.net>
> *Subject:* Re: [Fot] EGT gauge installation
>
>
> If you are using SU's I would use Cylinders 1 and 3 or 2 and 4. If you are
> using dual Webers I prefer the same as above but any two will do really.
> On Wednesday, February 27, 2019, 1:00:53 AM EST, Terry Stetler via Fot <
> fot at autox.team.net> wrote:
>
>
> One and Four.  Typically those would run the leaner than Two and Three.
>
> Terry Stetler
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
> ------------------------------
> *From:* Fot <fot-bounces at autox.team.net> on behalf of John Styduhar via
> Fot <fot at autox.team.net>
> *Sent:* Tuesday, February 26, 2019 12:30:15 PM
> *To:* Triumph 'Friends of Triumph
> *Subject:* [Fot] EGT gauge installation
>
> I need some tips on installation of a dual probe EGT gauge on the TR4 race
> engine with twin Strombergs-
> What two cylinder to use for probes.
> Optimum EG temperature for tuning purposes.
>
>
> Thanks
>
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