


George
The difference with adding LPG rather than more diesel is the rapid burn and increased heat associated with the LPG burn, it spins the turbo up at a low engine speed and then the boost become self sustaining, more air in equals more hot exhaust pressure out and a turbo is nothing more than a heat pump really. We used a 50hp shot of nitros-oxide in the turbo Cortina to get it on boost while sitting on the start line at the drags, one shot and it was away and then the gas came back on in the 1-2 change (2 speed auto) to stop uncontrolled wheel spin or wheels in the air off the line. The Bandag Bullet tyre smoking truck uses nitros-oxide to spin the turbos up to get that instant wheel spin.supersparky wrote:Starting to sound like the injector pump isn't working satisfactorily. If it goes ok with a blast of LPG then maybe it needs more fuel???
Manual switching first I think would verify if the concept worked or not. You only really need the added boost performance at low revs yet full throttle is probably required a lot of the time. You could even use a 2psi pressure switch between the turbo and intake manifold so the gas would only be fed in when the engine was under load, all too easy to hold the foot down at the wrong time or lift the foot that little bit too much and loose the boost pressure, no getting it back once it's gone, you are back 2 gears at least.Newcastle George wrote:David,
I have been able to adjust the injector pump to get more fuel, black smoke from the exhaust, still low boost.
Terry,
I was thinking it would be best to have the gas injected when throttle reached say, 80%.
Exhaust/muffler reconnected.
George