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Advice on FI with LPG? 

 

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 Post subject: Advice on FI with LPG?
Posted: Sat May 01, 2010 9:53 am 
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Location: Melbourne
VIC, Australia

I've spent so much on this car I may as well go forced induction and just keep it!

EB2 fairmont i6, already got all the usual n/a mods, extractors, cat, exhaust, wade 977b cam, thermofans conversion, cold air intake with enclosed pod filter, j3 chip custom dyno tuned.

It's dual fuel with a fairly restrictive gas setup though.

1. is it possible to go FI on LPG?
2. supercharge vs turbo?

I'm leaning towards SC only because in my 180sx, one thing that was annoying was boost lag. It had nothing up to about 2300rpm then it'd suddenly explode with power, i much prefer a more linear power curve. Although I assume with an i6, it wouldn't be as bad a 2L 4cyl in the 0-2300rpm range....

edit: I have $10k sitting in a term deposit which matures soon (matures a couple months before I get off p plates...and yes I planned it to be like that heh) and I'm not sure whether I should just drop like $5k on this car and keep $5k or cut my losses here, sell the fairmont at a huge loss and buy some sweet v8. OR, keep the fairmont as a daily and buy a project car and build an epic engine outside of the car...

 

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2: My cars: Holden Monaro CV8-Z 2005. ls1 v8 :)
3: Nissan 180sx.sr20det, ~180rwkw.Lotsa mods,0-100 in 5.2secs.crashed into pole :(
4: EB2 Fairmont. 5spd,2.5" zorst,hi-flow cat,extractors,wade977b,j3, plus a 152dB 200psi train horn

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 Post subject: Re: Advice on FI with LPG?
Posted: Tue May 04, 2010 9:14 pm 
Getting Side Ways
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5.7L manual vx with monaro bonnet +1!

 

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 Post subject: Re: Advice on FI with LPG?
Posted: Sun May 16, 2010 9:43 am 
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Location: Brisbane
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Hey. I've found that turbo lag is minimal on my falcon, due to excellent exhaust manifold design and having 4L to spool a turbo doesn't do any harm either.
It's possible to run with the currant LPG setup, but vapour injection really is the best option.
Attachment:
Picture 004.jpg
Picture 004.jpg [ 296.46 KiB | Viewed 44 times ]

This is a picture of my Au running on straight LPG with old mixer setup.

 

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 Post subject: Re: Advice on FI with LPG?
Posted: Tue May 25, 2010 9:32 pm 
Getting Side Ways
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Ride: AU falcon

Location: toongabbie
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i was looking at supercharging my oldschool v8 and was told to run it on straight gas, gas is so cold it helps chill the air.

duel fuel would be bad as a happy medium needs to be found so peak power isnt as good. dedicate it to gas and should be sweet.

a bloke a work sprayed my hand with lpg and it froze the skin instantly....i know how cold it is :P

 

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 Post subject: Re: Advice on FI with LPG?
Posted: Sat May 29, 2010 5:39 pm 
Parts Gopher
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Location: Dubbo
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Yeah mate it can be done, I get 222.5rwkw on a ring mixer system.

 

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 Post subject: Re: Advice on FI with LPG?
Posted: Sun Jun 06, 2010 12:37 am 
Getting Side Ways
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Why couldn't you go dual fuel with forced induction?

We have J3 chip's available that can do dual tunes, so you could get a petrol injection & ignition setup on one tune & an ignition setup on the other tune to suit LPG. If you use a mixer ring like Turbotaxi has done, and upgrade your petrol system to cope with the increased power, i don't see why you can't get in the ball park of Turbotaxi's power on both fuels?

Sure, it may not be as perfect as an engine setup for one fuel only, but it could be done. IT wasn't so long ago people used to say you couldn't run forced induction with a simple mixer ring setup, but that's been proven to be false.

Cheers

ToranaGuy

 

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 Post subject: Re: Advice on FI with LPG?
Posted: Sat Jul 10, 2010 6:36 pm 
Parts Gopher
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NSW, Australia

ToranaGuy wrote:
Why couldn't you go dual fuel with forced induction?

We have J3 chip's available that can do dual tunes, so you could get a petrol injection & ignition setup on one tune & an ignition setup on the other tune to suit LPG. If you use a mixer ring like Turbotaxi has done, and upgrade your petrol system to cope with the increased power, i don't see why you can't get in the ball park of Turbotaxi's power on both fuels?

Sure, it may not be as perfect as an engine setup for one fuel only, but it could be done. IT wasn't so long ago people used to say you couldn't run forced induction with a simple mixer ring setup, but that's been proven to be false.

Cheers

ToranaGuy


Yeah I have dual fuel boost. I use a vortech 12:1 rising rate reg, a new pump and it goes OK. But I run LPG most of the time, that is what the ECU is used to.

 

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Turbo AU falcon LPG 222.5 RWKW.
BAMKII XR6T with SVI - the first one!.
CR500E - Road registered CR500
VF1000R Mid 80's racer built as a HMP special
T88 Turbo XT Falcon with 351 Cleveland (mothballed)

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 Post subject: Re: Advice on FI with LPG?
Posted: Sat Jul 10, 2010 11:24 pm 
Getting Side Ways
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TURBOTAXI wrote:
ToranaGuy wrote:
Why couldn't you go dual fuel with forced induction?

We have J3 chip's available that can do dual tunes, so you could get a petrol injection & ignition setup on one tune & an ignition setup on the other tune to suit LPG. If you use a mixer ring like Turbotaxi has done, and upgrade your petrol system to cope with the increased power, i don't see why you can't get in the ball park of Turbotaxi's power on both fuels?

Sure, it may not be as perfect as an engine setup for one fuel only, but it could be done. IT wasn't so long ago people used to say you couldn't run forced induction with a simple mixer ring setup, but that's been proven to be false.

Cheers

ToranaGuy


Yeah I have dual fuel boost. I use a vortech 12:1 rising rate reg, a new pump and it goes OK. But I run LPG most of the time, that is what the ECU is used to.


Nice man. But you don't have different ignition maps for each fuel do you?

Cheers

ToranaGuy

 

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I am the ToranaGuy!|74 Lh Torana Turbo|78 Hz PanelVan|86 Mighty Boy Ute|93 EB2 Ghia,GT Mockup,5spd,LPGI,Full Leather|2 x EB Xr8 5spd's|FS [VIC]: Wrecking - Eb XR8 - Parts available |Build Thread|Ebay Items - Ford Parts|

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 Post subject: Re: Advice on FI with LPG?
Posted: Sat Jul 10, 2010 11:27 pm 
Parts Gopher
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Joined: 19th Mar 2006

Location: Dubbo
NSW, Australia

ToranaGuy wrote:
TURBOTAXI wrote:
ToranaGuy wrote:
Why couldn't you go dual fuel with forced induction?

We have J3 chip's available that can do dual tunes, so you could get a petrol injection & ignition setup on one tune & an ignition setup on the other tune to suit LPG. If you use a mixer ring like Turbotaxi has done, and upgrade your petrol system to cope with the increased power, i don't see why you can't get in the ball park of Turbotaxi's power on both fuels?

Sure, it may not be as perfect as an engine setup for one fuel only, but it could be done. IT wasn't so long ago people used to say you couldn't run forced induction with a simple mixer ring setup, but that's been proven to be false.

Cheers

ToranaGuy


Yeah I have dual fuel boost. I use a vortech 12:1 rising rate reg, a new pump and it goes OK. But I run LPG most of the time, that is what the ECU is used to.


Nice man. But you don't have different ignition maps for each fuel do you?

Cheers

ToranaGuy



No I dont. The ignition map stays the same for both. - it removes 4 degrees at WOT. If I was more serious I would be using a boost referenced ECU.

 

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Turbo AU falcon LPG 222.5 RWKW.
BAMKII XR6T with SVI - the first one!.
CR500E - Road registered CR500
VF1000R Mid 80's racer built as a HMP special
T88 Turbo XT Falcon with 351 Cleveland (mothballed)

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