My Next Big Idea...

[machg]

Wanting to have some fun in sub $1K racing; I have been thinking of cheap ways to make my car go fast for little $$$. Budget means that full EFI and turbo is not an option. I got thinking about how cheaply and reliably add fuel to suit boost. What I thought was something along these lines: http://autospeed.com/cms/A_0693/article.html and started chasing parts. Then driving up to Launceston the other day I had a better idea: Use LPG as the additional fuel when running boost! The set-up would be similar, but using LPG fueling system and injectors instead of petrol.

 

Pros: LPG is much more knock resistant than petrol.

No EFI pumps, wiring, return lines etc. etc. - perfect for carby motors.

$2000 government rebate.

Already have convertor, intercooler, turbo.

Run out of petrol? - drive on boost (LPG) to servo; Run out of LPG? - stay off boost to servo.

 

Cons: Weight.

Would have to be careful with gas tank level when boosting.

Cost and availability of LPG injectors.

 

I think this idea has huge potential. Please give feedback/point out things I might have overlooked. Mods; move if in wrong section.

[machg]

Pros: No LPG cold start issues.

Tune petrol for economy knowing LPG will handle boost

Setup at everything at home (*cough* BBQ gas cylinder *cough*) drive car to installer to fit tank

 

Cons:

Will run like a dog on petrol with timing setup for LPG boost (locked dissy? - I have never uderstood why this is necessary, if car is boosting, the dissy wouldn't be seeing vaccuum, would it?) - ultimately could be solved with electronically controlled ignition.