[Fot] fuel pressure gauges with isolators

[Brian Schirano]

so this isolates fuel from the gauge, no advantage if the gage is in the in the engine compartment unless the gauges are particularly prone to failure. That said there are other opportunities for fuel to escape in the engine bay, no fail safes on a leaking float bowl for example
Thanks for the tutorials gents
Brian
26A GT6+, 28 TR6Brian Schirano
585-305-0349 Cell 
BSchirano at yahoo.com 

    On Friday, March 1, 2019, 10:23:51 AM EST, Tony Drews <tony at tonydrews.com> wrote:  
 
  
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> On Behalf Of Rick Parent via Fot
 Sent: Wednesday, February 27, 2019 2:20 PM
 To: John Styduhar <johnstydo at gmail.com>; Terry Stetler <tlizzard at msn.com>
 Cc: Friends of Triumph <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 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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