Is there any reason why I cant..

[hallsie]

Fit an electric fuel pump to the Taimar and bypass the mechanical pump?

Stu

[phillpot]

That's what mine has got.

[phillpot]

Oh dear, looks like mine has been done all wrong


No pins diodes or bigger alternator (but it works)

[heightswitch]

Adrian@ said:

Then ...to add an electric fuel pump ...you should either pin or adhere the inlet to the carb as the fitting is a press fit and prone to popping out, BECAUSE of this, you should add a fuel cut-out-alternator relay driven diode system to the pump so that IF you have an accident then the pump will stop and you will not have fuel pumping all over the place. It might help to convert to a 18 ACR rather than a 17ACR alternator as the pump is a 100% duty cycle you might want to run the heater/wipers/HRW and lights all at the same time.
Adrian@

Come on Adrian..a safe TVR installation wheres the fun in that
N.

[hallsie]

To be honest, I was looking for potential problems with the carb pressures.

Im going to wire it via a relay to the ignition on, second click, as my Siler wedge is, and perhap have an emergency cut off in the cockpit somewhere.

Thatll do it!

Stu

[phillpot]

Pin's a funny word, yes I have proper fuel pipe clips on all connections, suction, delivery and return.

Rather than the "diode system" I have an inertia switch fitted (ex Sierra I think).

Don't use heated screen much but have driven with lights and wipers on and all seemed ok. Maybe as and when alternator dies I'd look to a bigger one?

[tomtrout]

I'm just using a changeover relay coupled with a standard relay driven by the alternator light circuit. The pump works all the time the engine is being cranked or is running but stops the moment the engine stalls. Not up and running yet so will let you know if it doesn't work!

[heightswitch]

phillpot said:

Pin's a funny word, yes I have proper fuel pipe clips on all connections, suction, delivery and return.

Rather than the "diode system" I have an inertia switch fitted (ex Sierra I think).

Don't use heated screen much but have driven with lights and wipers on and all seemed ok. Maybe as and when alternator dies I'd look to a bigger one?

Adrian means Pin, not clip.
The brass Inlet and sometimes return tube out of the carb body is known to occasionally drop out of the carb with resultant fuel spilling everywhere..this has been the cause of a number of TVR fires over the years, Araldite works just as well but adrian does recommend a belt and braces approach. a small roll pin carefully drilled through the carb body and brass tube and blob of sealand does the trick.

N.

[phillpot]

heightswitch said:

Adrian means Pin, not clip.
The brass Inlet and sometimes return tube out of the carb body is known to occasionally drop out of the carb

Thanks for the explanation, makes more sense now

[tomtrout]

I use a diode, instead of a changeover relay...so simple. If you would like a wiring diagram PM me...then you can sure that it will work.
Adrian@
[/quote]
Cheers Adrian. I will give my relay system a go but will certainly come back to you if I have problems.