RX7 and LPG.. match made in.......

[Pierscoe1]

...heaven? or hell?

just a thought, as the RX7's thirst is well documented.. wondered if anyone had done an LPG conversion?
is this even possible with a rotary?

IIRC LPG can make very comparable power to petrol, so with a few tweaks I'm sure you could have a 300bhp LPG RX7 (assuming it IS possible with a rotary).. and then more of us might be able to afford to run one ?!?!?!

any ideas/info/links ??

[rotarypower]

there is a guy who has done the conversion on a N/A 2nd gen RX7 says the power is reduced, but not by much. Haven't heard of any FD (3rd gen) conversions

[tuttle]

Havent heard of any significant power drops from lpg conversions (makes a lot of sense really imo) .Know a guy with an lpg 'liner, he swears it has more power, not sure about that, but it certainly runs nicely. At roughly 1/2 fuel costs, who'se arguing?

[Pierscoe1]

tuttle said:

At roughly 1/2 fuel costs, who'se arguing?

particularly with an FD !!

[iaint]

LPG has less energy than petrol (i.e. burning 1g of both petrol releases more energy). So you end up with less mpg but lower cost/litre.

LPG has one huge advantage - much cooler intake temps. It's like WI on steroids. Clean burn too. Not sure where you'd put the tank though - it needs to be bigger than the petrol tank and the FD doesn't have much space for it.

Would certainly be an interesting exercise though.

[Pierscoe1]

being a bit of a font of knowledge concerning RX7's, do you know of any reasons why a rotaary might not take to LPG well?? any compression issues/higher combustion temps etc etc??

[bint]

Slightly OT - but there's a chap out there somewhere with a Skyline that's been LPG'd - isn't it true that turbo'd cars take better to LPG?