Impco - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Inline 6 Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 04-28-2004, 23:14   #1 (permalink)
Registered User
 
Join Date: Jan 2004
Posts: 73
Impco

Hey guy's, i read somewhere that Impco LPG systems are regarded as the best in their class. Does anyone here have an Impco system installed on their falcon?

What i want to do is run my EF Fairmont Ghia on LPG i don't mind if it's straight gas or duel, but i do mind if duel fuel is not as good a straight gas, i'v heard duel fuel isn't as efficient as straight, but i have no idea whether it's true or not. If straight gas is the better way to go, do u know if Impco have a straight gas system? Can anybody shed some light on these ideas? Thank's

Bren.
XE Falcon is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-29-2004, 02:31   #2 (permalink)
Whats traction?
 
xdc351's Avatar
 
Join Date: Jul 2003
Location: Smokin melb's eastern suburbs
Age: 33
Posts: 2,197
Re: Impco

I run an impco LPG system on my 351 XD. Its not bad kit at all, but i'm sorry to say that gas research is the class leader in LPG systems. I'm saving up for a dual gas research system at the moment.

As far as an EF Fairmont goes a dual fuel system will always be a comromise over a single fuel system, but if you want to be able to tune a straight gas system in an efi car you'll need a chip of some description to change the timing correctly, which adds another $1000 or so to the price.

Hope this helps.
__________________
Just like a Tsunami.
xdc351 is offline   Reply With Quote
Old 04-29-2004, 21:07   #3 (permalink)
Registered User
 
Join Date: Jan 2004
Posts: 73
Re: Impco

Yea thanx that help's alot.

I have a rough idea on why the duel fuel isn't the best? I know with carby motors they rely on a rod through the centre, how does EFI work? But could you give me a few tips on that? cheers.

Basically i need to find the nearest Gas research dealer to me and query them on prices now then ay?
XE Falcon is offline   Reply With Quote
Old 04-29-2004, 22:42   #4 (permalink)
Crazed Cone Chaser
 
MADXF's Avatar
 
Join Date: Apr 2001
Location: Melbourne
Posts: 2,524
Re: Impco

With newer cars, dual fuel is not as much as a problem as it was before due to the fact you can have 2 different ignition maps running, 1 for petrol and 1 for lpg when either is selected, which is where MOST of the inefficiencies lie.
__________________
Do I really have to write something funny in here?

DILLIGAF: a subsiduary of the DGAF NOP group of companies.
BSR Member - 'Blanky' 'ConeKiller'

Go Here for My Garage Sale
MADXF is offline   Reply With Quote
Old 04-29-2004, 22:44   #5 (permalink)
Whats traction?
 
xdc351's Avatar
 
Join Date: Jul 2003
Location: Smokin melb's eastern suburbs
Age: 33
Posts: 2,197
Re: Impco

Dual fuel is often refered to as dual compromise. Because the 2 fuels need different cams and ignition timing there is no way to tune both optimally at the same time.

One or the other allows it to be tuned correctly, but as I said to do this with an EFI car you'll need a piggyback computer.

There is an installer directory on the GRA website http://www.gasresearch.com.au

Cheers,
Greg
__________________
Just like a Tsunami.
xdc351 is offline   Reply With Quote
Old 04-29-2004, 22:52   #6 (permalink)
The Guy You Love To Hate
 
Join Date: Mar 2004
Location: VICTORIA: The Revenue State
Posts: 1,510
Re: Impco

Im doing a straight gas setup as well on my 4.1.
From what I gather, Gas Research seem to be the leaders although the Impco products get better fuel economy (from what ive been told, please point out if im wrong).

I called Gas Research and I was quoted around $440 for a 480cfm gas throttle body. I rekon you can find a better 2nd hand deal though.

Good luck with your system.
T_Terror is offline   Reply With Quote
Old 04-29-2004, 23:09   #7 (permalink)
Crazed Cone Chaser
 
MADXF's Avatar
 
Join Date: Apr 2001
Location: Melbourne
Posts: 2,524
Re: Impco

hrmm... GRA have obviously been doing some more research... previously 440cfm was the largest single trottle body flow available.

I've got a 400cfm carby here which was on a home turbod non intercooled 4.1. It ran mid 13's (according to g-tech)
__________________
Do I really have to write something funny in here?

DILLIGAF: a subsiduary of the DGAF NOP group of companies.
BSR Member - 'Blanky' 'ConeKiller'

Go Here for My Garage Sale
MADXF is offline   Reply With Quote
Old 04-29-2004, 23:14   #8 (permalink)
RIP Sox.....
 
Soxx's Avatar
 
Join Date: Dec 2002
Location: Sydney
Age: 45
Posts: 2,580
Re: Impco

Dual fuel is also a compromise because gas likes a higher C/R.

Rick.
__________________
4L I6, naturally aspirated producing 173.5rwkw.
14.410 @ 96.49mph with street radials.
What's that?..... Did I hear you say TQE power?
Soxx is offline   Reply With Quote
Old 08-10-2004, 02:48   #9 (permalink)
Registered User
 
Join Date: Jun 2004
Posts: 118
Re: Impco

When you switch back to petrol (on dual fuel) is it exactly the same power pre conversion? Is there any tuning compromises in the conversion or obstruction with the air flow from the gas throttle body/converter?
FAIRMONTAU2 is offline   Reply With Quote
Old 08-11-2004, 04:12   #10 (permalink)
Whats traction?
 
xdc351's Avatar
 
Join Date: Jul 2003
Location: Smokin melb's eastern suburbs
Age: 33
Posts: 2,197
Re: Impco

As you have noted the restriction in the intake is the only reason you should loose power. The factory AU dual fuel setups have one of the most restictive throttle bodies i've ever seen, soley caused by the gas mixer.
__________________
Just like a Tsunami.
xdc351 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Inline 6 Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
B2 vs. Impco model L under boost conditions EA Turbo Clone Superchargers | Turbos | N2O 2 02-06-2004 03:05
IMPCO LPG Adaptive Digital Processor brooky LPG Tech 3 01-21-2004 03:42
Straight Gas - carbys? OverDose General Tech 5 12-18-2003 00:37
LPG systems for Clevo's Chris Brooks LPG Tech 65 10-26-2003 20:11

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 19:25.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.