I have no EGR at all mate.

i thought you already have a "big" turbo jason :confused:

Yeah, VT2 - VNT20 hybrid. Allards do a VT4 which would push some serious boost. Sounds like it would be going one step too far.

I would opt for injectors, purely because you wouldnt need to plum in a new fuelling system & the cost of refilling it every other week, couple all this with the fact it never needs replacing and will be "always on" as previously mentioned and it gets my vote, even if it still smokes. What is the percentage mix e.g. 70% diesel, 30% lpg?

The reason I ask is because your injectors are already on 100% so surely not many fuel savings there.

Or am I getting the wrong end of the stick/mix :confused:

Hi

In view of the mileage I do a year (around 45,000) I looked into LPG. The idea is that you run a high percentage of LPG and the diesel is squirted in more to ignite the LPG than to provide the power.

So in essence, you get more power by running the LPG / diesel mixture by making the engine burn more of the reduced quantity of diesel and the added LPG, thus reducing soot.

The engine should also run more like a petrol job as well, so less noise and vibration.

You still need to get enough air in there though, and also worth asking with the LPG conversion is that with uprated boost, will the LPG detonate?

Last thought, LPG runs hotter tha petrol, which runs hotter than diesel, are the cooling system and exhaust valves up to it?

I decided against it as cost recouperation was more than 2 years and warranty would be voided as well. Biggest reason was tanks in the boot though. In my job, a bootful of gas is perhaps less than wise.

Chris

Features: (quoted)

Simplicity is the key to getting the performance you want out of your truck.

Our patented design means: No mixers, sensors, evaporators, or switches to hassle with or adjust.

Easy installation and maintainence.

Cleaner burning fuel.

Better fuel economy.

Increased torque and horsepower for towing.

(read that as VW/Skoda below )

The Powershot 2000™ Propane Injection Kit is the perfect addition for your turbo diesel engine to gain horsepower at an affordable price.

The Powershot 2000™ is boost pressure activated, injecting propane into the engine as the boost pressure of the engine increases producing a throttle control, that you will definitely feel behind the wheel.

Safety features such as:

Power switch inside the cab so driver has full control of turning the system on and off.

Fuel lock off valve, stops the flow of propane unless the vehicle ignition and system is on.

Fits all FORD, DODGE AND GM TURBO DIESELS.

An adjustable orifice allows you to change flow rates from towing to performance effortlessly in minutes.

Variable flow rate delivers smooth, steadily increasing power, proportionate to the boost pressure.

the other thing is that LPG is rising in cost way quicker than petrol or diesel, about a year ago LPG was 30p -35p round the corner from me yet this week its upto about 49p.

i wouldn't consider an lpg conversion to save money myself.

i wouldn't consider an lpg conversion to save money myself.

Oooh, this is a very far 2nd possible benefit to me.

Good on you Jase for doing something which is not the "norm", not sure I would do it matey, but keep us posted on how you doing

How much of this power is going to be useable though :confused:

I mean were talking 275bhp in a FWD car, with a shed load of torque.

Mr W Its not going to be 275bhp. If I remain hopeful it will just turn it into a 250hp clean running car, with a relatively clean exhaust output too. Useable power is likely only to be 3rd gear and above. 1st and 2nd is a case of "forget it" now and will be with LPG.

What confuses me a little is that on a petrol the LPG is injected into the cylinder at a determined rate. With this system, it will be only putting in LPG (regulated) once I pass 5 PSI... On a cruise the boost rarely goes above 5 PSI on my boost guage. Usually sits around 0.2 or 0.3 of a bar. LPG won't cut until I get to around 0.35/0.4 bar, which essentially means it will only cut in on acceleration (no matter how slight) So on a long cruise it will just run on diesel anyway. Will be interesting. At least on a 80mph motorway cruise the boost usually sits around 0.4/0.5 bar constant, so it will be partially using LPG.

I'll have to find out if the LPG injection rate can be "remapped" to cut in lower and feed in gradually. :confused:

Checking a log for a trip from Axminster to Loughborough, I exceeded 5 psi boost for 54% of the time, and my driving style will have been gentler than yours IMHO. My concern would be how much LPG you were using compared to the amount you could usefully carry, i.e. will you be able to carry enough to be practical or will you be forever on the lookout for LPG refuelling stops?

Checking a log for a trip from Axminster to Loughborough, I exceeded 5 psi boost for 54% of the time, and my driving style will have been gentler than yours IMHO. My concern would be how much LPG you were using compared to the amount you could usefully carry, i.e. will you be able to carry enough to be practical or will you be forever on the lookout for LPG refuelling stops?

Well, I'm lucky to have an LPG place just down the road from me in Dawlish, and also I'll probably join the Countrywide scheme which is a card based, 24 hours a day LPG scheme, using places like Calor outlets to fill up with gas.

I wouldn't mind having a slightly smaller than normal tank though. No need for me to carry around 30 litres if I'm barely using it.

Jason why not get the tank installed in your spare wheel bay? I take it you dont use your spare I mean all that weight you could be saving:D

Edit just read your've already thought of that

Expect power to increase by % lpg injected, standard lpg system is 15%..

A 30ltr lpg tank will require topping up every 5 tankfulls of derv.

Won't need a new map

LPG assists in cooling the top end as compression is lowered slightly, less pressure=less temp.

Unloads std injectors, less derv required in cylinder. (less soot to you Jason)

Thousands of similar conversions in the Netherlands, will get you some links.

Yes please

Jason,

199 euros gets you this audi a8 4.0 tdi tubo:

http://cgi.ebay.de/Audi-A8-4E-Quattro-TDI-4-0l-Bj-03-07-Turbolader-links_W0QQitemZ8052767267QQcategoryZ61305QQrdZ1QQcmdZViewItem

tempted?

John

Nope. Happy with what I have at the moment.

Plus more boost won't help a great deal any more at those kinda power levels, you're getting into different engine altogether territory then

i do agree that maybe people are pushing FWD cars too far with all this, people go out and spend thousands and thousands to get a BFO turbo which gets them 400bhp but only late in the rev range as it would cause too much wheel spin and can only put their foot down in 3rd gear and above. surely they would have been better off getting either a 4x4 car or getting awesome LSD's etc and a little more power that they can actually use. probably faster in the end :confused:

when i hopefully get a big turbo in the future i want the power to come in as quick and strong as possible to make the most of it, but then i don't have traction issues

I'll have to find out if the LPG injection rate can be "remapped" to cut in lower and feed in gradually. :confused:

It is adjustable to suit your driving style also tank size is about 3/4 of OE tank - if that helps:thumbup:

I'll have to find out if the LPG injection rate can be "remapped" to cut in lower and feed in gradually. :confused:

Depends on driving style you can adjust when it kicks in, lower the boost higher LPG consumption etc. as a rule of thumb LPG tank is around 1/2 - 3/4 of OE fuel tank.

Re smokey what have the remappers said - does it pass MOT stds?? has the cam jumped a tooth?? co's Ive only known smokey VW with block filters/MAF or large Race injectors.

Re another thread about putting all this torque ever considered getting a scrap 4motion drive system should see some good times then - pending how deep you pockets are of course !!

I remember reading about a LPG conversion done on a Mk3 Golf TDI.

I think it was in Diesel Car mag.

Along with a chip, it went from 90bhp to 128bhp & torque went from 149lbft to 218lbft. With an extra 100 mile fuel tank range.

Uses a 30 litre tank, but can only be filled to 80% capacity due to gas expansion when hot. The engine automatically switches back to diesel-only when the gas tank runs out.

Jason,

Here is a link to the diesel car article on lpg:

http://homepage.ntlworld.com/j.yardley1/Jason/power15.pdf

I was fooling about the 4.0 tdi tubo.

Best wishes

John

I remember reading about a LPG conversion done on a Mk3 Golf TDI.

I think it was in Diesel Car mag.

Along with a chip' date=' it went from 90bhp to 128bhp & torque went from 149lbft to 218lbft. With an extra 100 mile fuel tank range.

Uses a 30 litre tank, but can only be filled to 80% capacity due to gas expansion when hot. The engine automatically switches back to diesel-only when the gas tank runs out.[/quote']

I've got this link http://www.dieselcar.com/pdf-files/articles/power/power16.pdf