Mazda Rotary Club

General => General Technical => Topic started by: ings on February 13, 2008, 09:35:53 PM

Title: RX7 LPG Conversion.
Post by: ings on February 13, 2008, 09:35:53 PM
Hello.

With the ridiculous fuel prices and the low mpg of the RX7, has anyone done, or considered the LPG conversion???

Having spent £100 this week alone on petrol, I was just wondering what the pro\'s and con\'s are, and whether it effects the running and performance.

Any ideas???

Cheers.
Title: RX7 LPG Conversion.
Post by: Fish on February 13, 2008, 09:42:35 PM
There have been and might still be running several RX-7\'s running LPG conversion. DO NOT HOWEVER DO THIS ON AN FD3S!!!!!

An FD wont last long on this. N/A engines will be as happy as a pig in sh....

Fish
Title: RX7 LPG Conversion.
Post by: ings on February 13, 2008, 09:48:28 PM
Ahh, guess that answers my question then. May have to live with being poor.

Thanks for the reply.
Title: RX7 LPG Conversion.
Post by: royal on February 13, 2008, 10:17:14 PM
Quote from: ingsAhh, guess that answers my question then. May have to live with being poor.

Thanks for the reply.
Might as well buy a sh*tter for the daily run about? with the amount of miles you\'re doing it\'ll be cheaper plus if you get a RWD sh&tter like an e30 etc you can learn to drift with the spare money  :):Santa
Title: RX7 LPG Conversion.
Post by: BlitzBoy on February 13, 2008, 10:30:02 PM
Quote from: FishThere have been and might still be running several RX-7\'s running LPG conversion. DO NOT HOWEVER DO THIS ON AN FD3S!!!!!

An FD wont last long on this. N/A engines will be as happy as a pig in sh....

Fish

Shanwil is about to do this on his FD be interesting to see his results
Title: RX7 LPG Conversion.
Post by: ings on February 13, 2008, 10:52:17 PM
Cheers.

Unfortunatley, Ive still got my Astra to get rid of, but I do plan to get some diesel runaround to keep costs down.

It would be great to see if the LPG actually is effective and reliable. If it does, halving the yearly fuel bill would be excellent. I\'ll keep an eye on the threads to see how it comes about.

Thanks.
Title: RX7 LPG Conversion.
Post by: grinder on February 13, 2008, 11:04:24 PM
trust me - shaun will get it working on the FD - we have discussed it for hours - and it will be a SERIOUS set up :D
Title: RX7 LPG Conversion.
Post by: antnicuk on February 13, 2008, 11:18:51 PM
Fish,  why no go on an FD?
Title: RX7 LPG Conversion.
Post by: Fish on February 14, 2008, 03:37:05 PM
Rotechiks used do to the LPG conversion, not sure if they still do.

NA rotary engines dont care about the quality of fuel going in to it, a turbo\'d engine is lot more fussy.

Fish
Title: RX7 LPG Conversion.
Post by: BlitzBoy on February 14, 2008, 03:41:14 PM
Fish I read on Shanwil LPG thread that LPG has a higer octane rating anyway so in theory should be ok in a turbo rotary
Title: RX7 LPG Conversion.
Post by: T11MNM on February 14, 2008, 03:55:18 PM
LPG has quite a high octane rating, which is why the "green" variant of the koenigsegg CCX develops more horse power.
Title: RX7 LPG Conversion.
Post by: shaunwil on February 14, 2008, 06:36:11 PM
Sorry guys, just seen this thread. I\'m currently going to be putting LPG on the FD in the next few months. Its higher RON than petrol, has better burn characteristics.

Just have a look on ausrotary at the number of turbo FB\'s that run on LPG. There are very few that run N/A they like running them with TO4\'s.

Shaun
Title: RX7 LPG Conversion.
Post by: shaunwil on February 14, 2008, 06:40:02 PM
Interesting Thread:

http://www.ausrotary.com/viewtopic.php?f=4&t=115356
http://www.ausrotary.com/viewtopic.php?f=21&t=110637&hilit=lpg+and+turbo

Shaun
Title: RX7 LPG Conversion.
Post by: shaunwil on February 14, 2008, 06:51:58 PM
Plus:

http://www.ausrotary.com/viewtopic.php?f=21&t=104195&hilit=lpg+and+turbo

Shaun
Title: RX7 LPG Conversion.
Post by: nikp on February 14, 2008, 06:58:05 PM
Josh, have you finally got an FD now?
Title: RX7 LPG Conversion.
Post by: ings on February 15, 2008, 06:07:36 AM
Hi.

Yeah, I got it last week for hopefully a great price. Running well so far, the only downside is that its an auto, but great all the same.
Title: RX7 LPG Conversion.
Post by: nikp on February 15, 2008, 09:18:14 AM
Dave HG MAY have a spare manual gearbox at some point in the future! But don\'t count on that!

Cool, nice one. My engine blew on mine on boxing! :( Currently getting it rebuilt.