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Was wondering if this can be done.. as i'd like to do it one day as a project..

2007-08-08 06:50:08 · 22 answers · asked by dan c 1 in Cars & Transportation Other - Cars & Transportation

So it is actuall physically impossible?

2007-08-08 06:57:24 · update #1

Just to clarify, when i say convert.. i mean use the original engine and maybe modify it to combust diesel

2007-08-08 06:59:32 · update #2

I was wanting to create a 1000cc diesel just to see how well it ran, and the ridiculousl MPG it'd return..

2007-08-08 07:06:39 · update #3

22 answers

yeah but you have to put a diesel motor in the car so forget about it

2007-08-08 06:53:07 · answer #1 · answered by ff2307 3 · 1 0

What the hell have the shockers, dashboard and instruments got to do with running an engine on a different fuel? Do you people actually understand the questions you're answering, or are you just trying to bump your points score up?

The best answer was regarding the compression ratio and engine design.
The gearbox on a diesel is exactly the same as a petrol engine.
The ancillary components (alternator, steering pump, aircon etc) are exactly the same as a petrol engine.
The dashboard!!!!! is exactly the same as a petrol.
The only electrical difference is with regard to engine control and fuel pumping i.e. a glowplug circuit is needed on a diesel where it isn't on a petrol, but a petrol can use up to twenty sensors to tell the ecu how to operate, a diesel uses two or three.

Modern diesels will run on a compression ratio as low as 13:1. The design of the combustion chambers and injection systems have made this possible. The cylinder heads are very similar but still different enough to negate modification (glowplugs are required for a start!). Diesel injectors and fuel pumps are completely different. A petrol fuel system runs at approximately 40-50psi. A diesel fuel system with direct injection can top 30,000 psi. Even the old indirect systems reached 4000psi. The pump is usually run from the end of the camshaft or timing chain which would need modifyng to accept the pump.

The bottom-end of a modern diesel is very similar to that of a petrol - they're not that much heavier these days, it's more the top-end of the engine that would be a nightmare to modify.

So in answer to the actual question asked, NO, you can't MODIFY a petrol engine to work on diesel, but you could swap parts from one to the other and mackle a working engine. Not an efficient working engine, but you would get it to turn and possibly run (a bit!). But not effectively to actually run a vehicle for any length of time.

2007-08-11 04:16:51 · answer #2 · answered by andy j 2 · 2 0

Petrol To Diesel Conversion

2016-11-06 22:13:23 · answer #3 · answered by ? 4 · 0 0

Converting a petrol engine to run on diesel isn't easy.
It may be possible to use the same block, but you'll have to change almost all the other parts (pistons, heads, injectors).

If you were to do it, the easiest would be to find an engine that was built in both petrol and diesel versions, such as the Peugeot/Citroën TU3 or XU9.
The only 1-litre diesel I can think of is the 3-cylinder turbo from the late 1980's Daihatsu Charade. I'm not sure if it shared a block with the concurrent 1-litre 3-cyl turbo petrol also used in the Charade.

2007-08-09 00:25:34 · answer #4 · answered by Neil 7 · 1 0

General motors did it with their petrol engine in the eighties.
You would need to raise the compression ratio by skimming the head or fitting different pistons, work out some means of running a diesel pump off of the cam belt and alter the cam timing so that there is no overlap between the valves opening.
Daihatsu did a three cylinder 1200 diesel that might be an easier option.

2007-08-08 11:05:09 · answer #5 · answered by COLIN E 1 · 0 0

In short the answer is no. However you can do anything if you have enough money to waste, so if you want to change the engine and add all the associated parts that a diesel car has you could do it. The petrol engine itself would have to be discarded. It cannot be converted.

2007-08-08 07:03:44 · answer #6 · answered by Anonymous · 1 0

It is a very big job that will not only mean a new diesel engine, loom, numerous ancillary components probably gearbox and a lot of other fiddly bits.

Buy a diesel car in the first place or convert a petrol engine to LPG

2007-08-08 06:58:28 · answer #7 · answered by Blitz 4 · 1 0

Diesel engines ignite their fuel by compression - around 20:1 ratio is normal.

Petrol engines ignite their fuel by spark - compression ratio is typically around 9:1.

Valve timings and clearances are different
Con-rods are different.
Pistons are different.
Cylinder head shape is different.
Crankshaft bearings and journals are different.
Inlet and exhaust ports are different.

(The only components that are vaguely similar, are the barrels - you would need to change just about every other major component in the engine. Which would be the same as buying a diesel engine instead...)

Short answer - no, it can't be done.

2007-08-08 10:57:06 · answer #8 · answered by Nightworks 7 · 1 0

Hi

Absolutely not. The designs are totally different. You may as well just transplant a diesel engine in place of the petrol one.

Regards

Regards

Geordie

2007-08-08 08:40:56 · answer #9 · answered by Grizz 5 · 1 0

The diesel engine has to be stronger due to the much higher compression The engines are similar otherwise

2007-08-08 07:12:10 · answer #10 · answered by Anonymous · 0 1

I have a land rover V8 petrol Mod 97 would like to put a TD engine V6 in in place of it. Could some one advice me

2014-12-02 04:19:23 · answer #11 · answered by Anonymous · 0 0

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