does anyone here run there T4 on LPG i am wondering as i am about to do it for my bay window and was wondering what the general concensus is
i live in england so fuel is expensive hence wanting to run LPG (liquid petroleum gas) which is 1/2 the price fo peterol (gas) here
running LPG as fuel
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Bobby74
- Posts: 1747
- Joined: Wed Feb 21, 2001 12:01 am
I've heard of LPG mixer kits for 4 barell carbs. It basically meters LPG into the float bowls of a carburator.
I believe there is also base plates that "fog" LPG under a carb much like a Nitrous kit. I'm sure you could come up with something where you could mount nipples or some type of "nozzle" in the carb side so you could give a metered amount of LPG.
Going to straight LPG is somthing I don't know anything about. I've heard that you can run higher compression ratios because LPG has a cooler running temp and a higher effective octane, but this is second hand info. Might want to do some research on Google about this.
-Bobby
I believe there is also base plates that "fog" LPG under a carb much like a Nitrous kit. I'm sure you could come up with something where you could mount nipples or some type of "nozzle" in the carb side so you could give a metered amount of LPG.
Going to straight LPG is somthing I don't know anything about. I've heard that you can run higher compression ratios because LPG has a cooler running temp and a higher effective octane, but this is second hand info. Might want to do some research on Google about this.
-Bobby
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Wally
- Posts: 4564
- Joined: Mon Oct 28, 2002 12:01 am
Hi Caveman,
Yes, I run my squareback with 1800 type 4 on LPG on a daily basis. Before that it had a stock 1600 on LPG also.
With a bigger engine I found it a little bit more difficult to find a good gasifier that lets the engine rev easily past 4000 rpm. Power is noticebly less tehrefore..
Other than that it even runs with cooler head temps than when I drive with petrol! which is strange since LPG is suppose to burn with a higher temp. Gas mileage didn't suffer either.
I 'am very happy with it.
Best regards,
Walter
Yes, I run my squareback with 1800 type 4 on LPG on a daily basis. Before that it had a stock 1600 on LPG also.
With a bigger engine I found it a little bit more difficult to find a good gasifier that lets the engine rev easily past 4000 rpm. Power is noticebly less tehrefore..
Other than that it even runs with cooler head temps than when I drive with petrol! which is strange since LPG is suppose to burn with a higher temp. Gas mileage didn't suffer either.
I 'am very happy with it.
Best regards,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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Wally
- Posts: 4564
- Joined: Mon Oct 28, 2002 12:01 am
Hi Bobby,
The set-up needs a very strong pressurized tank where the liquid gas is stored (in addition to your standard petrol tank) in your car. That is a downside: it needs a space! Mine (50 ltr) is in the front boot.
From there it goes in lquid stat to a gasifier which needs heat to work properly. Watercooled cars use the watercircuit to heat up the gasifier to evaporate the LPG, but in an aircooled car that is the major problem these days.
You used to be able to run the liquid gas through the exhaust muffler to heat up, but for new LPG installatie that are installed as of 1998, that method is no longer allowed. Heating by oil is not an alternative for moderate climates such as over here due to freezing problemes of the intakes in the winter early after starting the engine.
From the gasifier the LPG goes in gaseous form the the top of the carbs by an adaptor roughly the size of a venturi.
The gasifier regulates the amount of LPG and acts thus as a carb for the LPG system.
The nice thing is that LPG has a very high Octane rating (103 RON or more).
I think it would run even smother with a central plenum set-up of an injection model, so that might be my next set-up.
Regards,
Walter
The set-up needs a very strong pressurized tank where the liquid gas is stored (in addition to your standard petrol tank) in your car. That is a downside: it needs a space! Mine (50 ltr) is in the front boot.
From there it goes in lquid stat to a gasifier which needs heat to work properly. Watercooled cars use the watercircuit to heat up the gasifier to evaporate the LPG, but in an aircooled car that is the major problem these days.
You used to be able to run the liquid gas through the exhaust muffler to heat up, but for new LPG installatie that are installed as of 1998, that method is no longer allowed. Heating by oil is not an alternative for moderate climates such as over here due to freezing problemes of the intakes in the winter early after starting the engine.
From the gasifier the LPG goes in gaseous form the the top of the carbs by an adaptor roughly the size of a venturi.
The gasifier regulates the amount of LPG and acts thus as a carb for the LPG system.
The nice thing is that LPG has a very high Octane rating (103 RON or more).
I think it would run even smother with a central plenum set-up of an injection model, so that might be my next set-up.
Regards,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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greggholmes
- Posts: 215
- Joined: Tue Oct 02, 2001 1:01 am
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NextGen
- Posts: 2830
- Joined: Wed May 30, 2001 12:01 am
Years ago I had a friend that was going to convert a T-3 squareback to Propane. He moved and I never knew if he did it, but I remember one thing he did. He put a Tee fitting before the pressure regulator on the FI with a gauge and a switch. He said he could switch from gas to Propane by turning the switch. Now this is interesting, he also said, the T-3 took 30psi of gas to run and he was going to pump in 30psi of Propane. He said the electro-mach injectors didn't care what they were injecting. Is this possible if you have a pressurized tank of Natural or Propane?
Joe
Joe
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type4newbie
- Posts: 70
- Joined: Fri Nov 02, 2001 12:01 am
A friend and I just converted a type 1 2332 to straight propane last week. It is easy and simple. I also got a ride in a stock 1800 type IV w/ turbo propane and it was very powerful for a stock junk yard motor. The only difficult part is the manifold which my friend made and used a 4 barrel throttle body w/ the propane. The 4 barrel throttle body and home made intake work great because the intake velocity does not matter w/ propane since the propane is already a gas and not a vapor (as gasoline is). If you have any questions I will be glad to pass on any limited knowledge that I have.
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Wally
- Posts: 4564
- Joined: Mon Oct 28, 2002 12:01 am
Yeah, I can run both LPG and gas by the switch of a dash mounted button. Just when on gas, I need to first run the carbs dry before switching over. I did mount an electric fuel pump to fill the carbs quicker 
The latest LPG technology usus indeed LPG injection, but that is only on cars that have already the newest EFI...
With that system, there is absolutely no difference in driving experience, mpg or power!
http://www.necam.nl/english/index.html
Greetings,
Walter
The latest LPG technology usus indeed LPG injection, but that is only on cars that have already the newest EFI...
With that system, there is absolutely no difference in driving experience, mpg or power!
http://www.necam.nl/english/index.html
Greetings,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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MNAirHead
- Posts: 9570
- Joined: Mon Sep 08, 2003 6:12 am
Howdy.
I JUST went to an equipment tech school last week.
One of the topics was the Propane conversion on a General Purpose Kawasaki engine.
What's required???
A "Spud" (inlet from the tank)
And a Regulator
I was sooooo stroked about it ... ran out to my truck where I had a 34pict3 and had the engineer do a step by step conversion to propane.
The challenge with information on propane fittings is that nobody wants the liabiltiy. I was required to swear on a pile of bibles that I wouldn't tell anyone the EXACT parts (sizes, numbers etc)
If you can hold off for a few months, I'll be converting a 1200 type 1 this summer.
Downside to propane is that it's not stable through a temperature variance... it's liquid at -43 f... and then builds pressure as the temperature rises.
T.
I JUST went to an equipment tech school last week.
One of the topics was the Propane conversion on a General Purpose Kawasaki engine.
What's required???
A "Spud" (inlet from the tank)
And a Regulator
I was sooooo stroked about it ... ran out to my truck where I had a 34pict3 and had the engineer do a step by step conversion to propane.
The challenge with information on propane fittings is that nobody wants the liabiltiy. I was required to swear on a pile of bibles that I wouldn't tell anyone the EXACT parts (sizes, numbers etc)
If you can hold off for a few months, I'll be converting a 1200 type 1 this summer.
Downside to propane is that it's not stable through a temperature variance... it's liquid at -43 f... and then builds pressure as the temperature rises.
T.