Tbi swap build thread

[68 TT]

Originally Posted by kcblazer75

I just thought of something that I haven't seen much mention of (if any) on this thread.

If you are installing TBI with the idea that your truck should keep running at high angles, you should consider making sure that your system will shut off in a roll-over.

With a fuel surge tank system installed, like an am doing, there is every possibility that there will be enough fuel in the surge tank to keep it running upside down!

My solution is to install a mercury switch that cuts power to the TBI system if I reach an angle of more than 90 degrees. My TBI ignition system is powered by a single HD relay, so I will just put it between the ignition source and the relay.

I'll have to experiment to make sure that a hard bump or bounce doesn't cause the TBI to turn off.

available from Parts Express - http://www.parts-express.com/pe/show...number=060-275

Lets hear it if you have other ideas.

Keith

Something connected through a low oil pressure sensor (like the Auto Meter warning lights use) would do the trick. No worries about an impact setting it off. If you are on your side or upside down you don't have oil pressure for long.

http://www.summitracing.com/parts/ATM-3241/

http://www.summitracing.com/parts/REB-140-1345/

http://www.summitracing.com/parts/SMP-PS171/

Plenty of different pressure ranges out there to suit your specific engine.

It just needs to be low enough that your cranking oil pressure will turn it off so the truck will start.