[Fot] fuel pressure gauges with isolators

[Tony Drews]

Here's an example:

https://www.summitracing.com/parts/atm-5376/overview/

It's basically got a diaphragm inside.  Fuel goes to one side of the 
diaphragm (spell that 3 times quickly) and ethylene glycol is on the 
other side.  The line from the engine bay to the fuel pressure gauge has 
the ethylene glycol.  If you have a rupture in the line in the passenger 
compartment you just get a wet leg, not a ball of fire.

Regards, Tony

On 3/1/2019 6:05 AM, Brian Schirano 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> 
> <mailto: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> 
> <mailto:johnstydo at gmail.com>; Terry Stetler <tlizzard at msn.com> 
> <mailto:tlizzard at msn.com>
> *Cc:* Friends of Triumph <fot at autox.team.net> <mailto: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 <mailto: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 
> <mailto:fot-bounces at autox.team.net>> on behalf of John Styduhar via 
> Fot <fot at autox.team.net <mailto: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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