lpg powered windsor. - Ford Truck Enthusiasts Forums



lpg powered windsor.

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 04-27-2008, 03:57 PM
Truckin4life Truckin4life is offline
Street Queen to the extr3m3
Thread Starter
 
Join Date: Jan 2005
Location: Lubbock, Texas
Posts: 4,554
Truckin4life has a great reputation on FTE.Truckin4life has a great reputation on FTE.Truckin4life has a great reputation on FTE.Truckin4life has a great reputation on FTE.Truckin4life has a great reputation on FTE.
lpg powered windsor.

I am doing some reseach on a lpg conversion for my 351w build... It is currently fuel injected and i would like to keep it fuel injected too... I understand for best results that compression should be about 14:1 does that sound accurate. Also do you have any advice on where to get parts for this or what companies could supply me with some more specific and detailed answers. For reference I was planning on building the motor stroking it to 408ci Then coverting to run on lpg since it would be built specifically to run lpg i wont have to worry about mixers... Any tips, expierences or advice would be much apprecieated.

Thanks,
Don
Reply With Quote
  #2  
Old 04-29-2008, 07:27 AM
gasman6674's Avatar
gasman6674 gasman6674 is offline
Posting Guru
 
Join Date: Apr 2002
Location: Greenwood In. USA
Posts: 1,395
gasman6674 is gaining momentum as a positive member of FTE.
Please contact your local LP gas dealer for the equipment. Fuel injected engine are the best candidates for conversion however you will still need a "mixer" to introduce lp into the air intake. You might be able to find a plate mixer that would go between your Throttle Body and the intake but I would not recomend it for your built up engine as it will limit your flexibility in fuel volume. Also you will need a high intial advance but you need to limit the total to around 28-32 deg @ 3000-3500Rpm. Dual Curve (MSD) makes a unit that will do a nice job without having to recurve the distributor.
Let me know if I can help

Regards
Reply With Quote
  #3  
Old 05-01-2008, 05:30 PM
fraso fraso is offline
Senior User
 
Join Date: Apr 2006
Location: Fort Erie, ON
Posts: 145
fraso is starting off with a positive reputation.
The best way to convert an EFI engine is with a propane injection conversion. There are a number of these systems on the market but the lowest priced system is the ESIP parts package made by Technocarb.

The critical compression ratio for propane is about 12:1. For best reliability, keep the CR in the range of 10:1 - 11:1.
Reply With Quote
  #4  
Old 05-09-2008, 07:59 AM
1978Crew 1978Crew is offline
Senior User
 
Join Date: Sep 2003
Location: Central Texas
Posts: 298
1978Crew is starting off with a positive reputation.
what about cam timing and lift. what recommendations can you make. I am thinkg of the same converstion, but for a carb'd 351M. I know about the timing advance, but what about reducing cam overlap from stock to keep dynamic CR up, and increasing lift to flow the same, or more, volumn whith shorter duration?
Reply With Quote
  #5  
Old 05-09-2008, 08:52 AM
fraso fraso is offline
Senior User
 
Join Date: Apr 2006
Location: Fort Erie, ON
Posts: 145
fraso is starting off with a positive reputation.
Propane is just another fuel. The type of cam you need depends on the intended use of your vehicle. If you want low RPM torque, you need to select components for this purpose.
Reply With Quote
  #6  
Old 05-10-2008, 02:24 AM
bokker bokker is offline
Senior User
 
Join Date: Mar 2005
Location: uk
Posts: 352
bokker is starting off with a positive reputation.
hi, i have been running my truck, a 4,2 v6, on propane for a few years now. it has had no changes to cam or timming and uses a mixer. it runs well but if i want full power i have to switch over to petrol.
the injection propane is the way to go for full power but is more expensive and the system will posabley require a laptop to setup. bokker.
Reply With Quote
  #7  
Old 05-10-2008, 01:43 PM
thosfsull thosfsull is offline
Senior User
 
Join Date: Sep 2007
Posts: 100
thosfsull is starting off with a positive reputation.
Reply With Quote
  #8  
Old 05-29-2008, 07:03 PM
relient3074 relient3074 is offline
Freshman User
 
Join Date: May 2008
Posts: 29
relient3074 is starting off with a positive reputation.
Quote:
Originally Posted by 1978Crew View Post
what about cam timing and lift. what recommendations can you make. I am thinkg of the same converstion, but for a carb'd 351M. I know about the timing advance, but what about reducing cam overlap from stock to keep dynamic CR up, and increasing lift to flow the same, or more, volumn whith shorter duration?
Go to Propane Conversion Kits They have kits built specifically for carbureted vehicles. You do need a 4v intake, but the propane unit replaces the carburetor completely(unless you choose the dual-fuel kit, which adapts to most any 4v carb). No worries about proper jetting or manual adjustments. You having a 351m works too. The 351m has detonation issues with CR's much over 9.5-10:1. Propane is 100-110 octane, so you can run higher CR. With these kits, you can run stock components, but in a 351m, why would you want to? No need to change much.

Carbureted propane vehicles have been used for quite a while now in off-road and rock crawler capacities. However, they do warn that, if your vehicle applies to your states' smog emission regulations, it may not be legal to run. I am in the process of installing a kit on my 400. In Utah, vehicles made '68 and up have to be emissions tested. Good thing my '73 400 is in a '67 f100. NO EMISSIONS TESTING!!! (though propane does run cleaner, still illegal)
Reply With Quote
  #9  
Old 05-30-2008, 06:23 PM
1978Crew 1978Crew is offline
Senior User
 
Join Date: Sep 2003
Location: Central Texas
Posts: 298
1978Crew is starting off with a positive reputation.
a '78 in TX does not require testing either.
Reply With Quote
  #10  
Old 05-30-2008, 08:46 PM
relient3074 relient3074 is offline
Freshman User
 
Join Date: May 2008
Posts: 29
relient3074 is starting off with a positive reputation.
That would be nice....

It's been years prior to '68 here for a LONG time..... They keep "talking" about moving it to later years, but here in northern Utah, we are cursed with living in one big valley. We have major smog problem as it is. During the winter, when we have no wind or storms push through, we have HORRIBLE inversions.

I need to move back to Florida or another coastal state that has less restrictive smog/ emissions regulations.
Reply With Quote
  #11  
Old 06-08-2008, 01:02 PM
projectSHO89 projectSHO89 is offline
Post Fiend
 
Join Date: Jan 2004
Location: St Louis
Posts: 13,245
projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.projectSHO89 has a spectacular reputation.
Quote:
Originally Posted by relient3074 View Post
It's been years prior to '68 here for a LONG time..... They keep "talking" about moving it to later years, but here in northern Utah, we are cursed with living in one big valley. We have major smog problem as it is. During the winter, when we have no wind or storms push through, we have HORRIBLE inversions.

I need to move back to Florida or another coastal state that has less restrictive smog/ emissions regulations.

Yeah, those hurricanes tend to blow all the pollution elsewhere....




Steve
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
LPG conversion for 460BB worth it? WarPigF250 1987 - 1996 F150 & Larger F-Series Trucks 4 07-30-2017 04:12 PM
Ford Escape 2001: Error Code P0401 on Petrol, but Not on LPG Gas Stu Murphy Escape & Escape Hybrid 1 04-20-2016 09:16 AM
351 Cleveland better than a 351 Windsor? FireBlue 1987 - 1996 F150 & Larger F-Series Trucks 28 02-09-2010 10:09 PM
460 intake manifold gaskets? lewislynn Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 13 06-07-2007 02:33 PM
Reversing an LPG conversion GasMonkey Alternative Fuels, Hybrids & Mileage 3 02-22-2005 11:41 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
351w, cams, conversion, kit, lpg, powered, sale, truck, trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 06:08 AM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: