Fitting a diesel engine.

JasonB · 16-09-08, 12:06 PM

OK, I know a thread title like this starts a few people crying no! and running to the hills but I'm just thinking out loud at this stage.

i currently have a 1990 2.2 coupe that's not been used for a year.
I'm currently looking at ways to keep it in my ownership and one thing that could sway it is better mpg.
Does anyone have any info of diesel engine swaps done on these?
I'm not clued up on the relevant models codes so any simple advice would be most welcome. Maybe even a set up taken from another manufacturer?
I've tried the search but didn't find anything.

Thanks
JB

Emjay · 16-09-08, 12:35 PM

I've run!!!

don't do it

pimpdriver · 16-09-08, 05:53 PM

Quote:

Originally Posted by JasonB

OK, I know a thread title like this starts a few people crying no! and running to the hills but I'm just thinking out loud at this stage.

i currently have a 1990 2.2 coupe that's not been used for a year.
I'm currently looking at ways to keep it in my ownership and one thing that could sway it is better mpg.
Does anyone have any info of diesel engine swaps done on these?
I'm not clued up on the relevant models codes so any simple advice would be most welcome. Maybe even a set up taken from another manufacturer?
I've tried the search but didn't find anything.

Thanks
JB

Do a quick calculation.
Cost of fitting diesel engine = £500 (£200 engine, 300 fitting conservative estimate or just for additional bits and bobs, new clutch etc)

How much extra petrol would £500 buy at your current annual mileage?

Just a thought......

darreno'd' · 16-09-08, 06:28 PM

If it's as much for the challenge, then go for it. I think a tricked up diesel in a ur would be great, you could have 275 bhp with 450 lbft of torque and probably 35 mpg quite easily. That would be a great useable daily driver.

joe90 · 16-09-08, 07:39 PM

Quote:

Originally Posted by JasonB

OK, I know a thread title like this starts a few people crying no! and running to the hills but I'm just thinking out loud at this stage.

i currently have a 1990 2.2 coupe that's not been used for a year.
I'm currently looking at ways to keep it in my ownership and one thing that could sway it is better mpg.
Does anyone have any info of diesel engine swaps done on these?
I'm not clued up on the relevant models codes so any simple advice would be most welcome. Maybe even a set up taken from another manufacturer?
I've tried the search but didn't find anything.

Thanks
JB

Instead of the diesel route have you thought about LPG.

msh · 16-09-08, 10:26 PM

Quote:

Originally Posted by pimpdriver

Do a quick calculation.
Cost of fitting diesel engine = £500 (£200 engine, 300 fitting conservative estimate or just for additional bits and bobs, new clutch etc)

How much extra petrol would £500 buy at your current annual mileage?

Just a thought......

Imagine - 200 bhp and 500 nm in street configuration from 2k rpm upwards... Just imagine...

Instead of sound, some tanks of petrol and nothing more

Btw - which one costs £200? And don't forget about gearbox

Because there is different gear ratios.

pimpdriver · 17-09-08, 04:48 AM

Quote:

Originally Posted by msh

Imagine - 200 bhp and 500 nm in street configuration from 2k rpm upwards... Just imagine...

Instead of sound, some tanks of petrol and nothing more

Btw - which one costs £200? And don't forget about gearbox

Because there is different gear ratios.

Well you could go the 1.6TD route as fitted to B3 anyway.

Or 1.9TDI as per B4

Or 2.5TDI from C4

£200 - Just random figures I picked out of the air.

Remember all of the wiring too if picking a later TDI with all the immobiliser etc.

msh · 17-09-08, 05:10 AM

I'm not forgetting about that

1.6 TD isn't engine

Ok, it's something like engine, but it have only 75 bhp [and god only knows how much torque, i'll guess about 150 nm

] and power upgrade means some difficult things, unlike 2.5 R5 TDI AEL.

I like this aspect of diesel engines. I don't have one only because of smoothness, and, also - with petrol in winters there is always guarantee that u will be able to start your car

JasonB · 17-09-08, 08:13 AM

Nice to see a few replies!
I know this can be a topic that divides opinion and as I said it's just a thought at the moment.

My situation is that I bought the car as a winter driver while my main car was having a turbo changed. Now I do all my own work on my cars and the turbo change quickly became an engine rebuild which with working away with work etc ended up taking almost 2 years!
In the meantime I got quite taken with the Audi and even now seem loathed to get rid of it.
the problem for me is it's not viable to keep two cars in use that hardly ever see 30mpg.
For the last month I've been using a Rover 2.0 turbo diesel and getting 43-45mpg. Given the choice I'd love to get something higher(40??) from the audi.
LPG was considered (parts are available on ebay) but the coupe already has a petrol tank and a spare wheel in the boot so another tank will take up what little room I have left.
A diesel option seems the answer. I reckon the torque and lack of revs is actually more suited to the daily commute.
I understand the diesel g/box will have to be used and having the car off the road for a few months isn't a problem. There is an element of enjoying the challenge in doing it as well.
A 1.9 or 2.5 tdi sounds great.
What cars were these fitted to?
Were these engines fitted in-line (as per the coupe) with a FWD layout?
I know getting the motor in the car is only half the battle. The ecu and wiring will be a right pain.
Just gathering info at the moment.

JB

joe90 · 17-09-08, 02:32 PM

[quote=JasonB;18430]Nice to see a few replies!

LPG was considered (parts are available on ebay) but the coupe already has a petrol tank and a spare wheel in the boot so another tank will take up what little room I have left.
/QUOTE]

With regards to the fuel and gas tanks petrol/lpg you realy need to speak to a specialist company as most companys that supply and fit lpg systems remove the standard fuel tank and replace it with a tank which only holds a few gallons, and the lpg tank sits at the side, of it which results in very little or no boot loss at all.

16-09-08, 06:28 PM	#4
darreno'd' Mr Sixty Thousand!! Classic Audi Club Member Join Date: Jul 2007 Location: berkshire Posts: 1,729	If it's as much for the challenge, then go for it. I think a tricked up diesel in a ur would be great, you could have 275 bhp with 450 lbft of torque and probably 35 mpg quite easily. That would be a great useable daily driver. __________________ http://www.oesems.co.uk/

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Turbo Diesel revs redline,can,t stop engine without stalling it???	BIGGYIN	Engine	9	01-12-09 07:20 AM
fitting bushes etc	pimpdriver	Suspension & Brakes	2	10-06-09 11:46 AM
Sill trim re-fitting: '87 Coupe	BigT80	Bodywork, glass & exterior fitments	2	28-04-08 09:36 AM

16-09-08, 12:35 PM	#2
Emjay Man Fettler Extraodinaire Classic Audi Club Member Join Date: Jul 2008 Location: Up my own arse blowing smoke Posts: 7,417	I've run!!! don't do it

17-09-08, 05:10 AM	#8
msh 4 ring whore! Join Date: Jun 2008 Location: Rucava, Latvija Posts: 3,816	I'm not forgetting about that 1.6 TD isn't engine Ok, it's something like engine, but it have only 75 bhp [and god only knows how much torque, i'll guess about 150 nm ] and power upgrade means some difficult things, unlike 2.5 R5 TDI AEL. I like this aspect of diesel engines. I don't have one only because of smoothness, and, also - with petrol in winters there is always guarantee that u will be able to start your car

17-09-08, 08:13 AM	#9
JasonB Newbie! Join Date: Jul 2008 Location: South Wales Posts: 15	Nice to see a few replies! I know this can be a topic that divides opinion and as I said it's just a thought at the moment. My situation is that I bought the car as a winter driver while my main car was having a turbo changed. Now I do all my own work on my cars and the turbo change quickly became an engine rebuild which with working away with work etc ended up taking almost 2 years! In the meantime I got quite taken with the Audi and even now seem loathed to get rid of it. the problem for me is it's not viable to keep two cars in use that hardly ever see 30mpg. For the last month I've been using a Rover 2.0 turbo diesel and getting 43-45mpg. Given the choice I'd love to get something higher(40??) from the audi. LPG was considered (parts are available on ebay) but the coupe already has a petrol tank and a spare wheel in the boot so another tank will take up what little room I have left. A diesel option seems the answer. I reckon the torque and lack of revs is actually more suited to the daily commute. I understand the diesel g/box will have to be used and having the car off the road for a few months isn't a problem. There is an element of enjoying the challenge in doing it as well. A 1.9 or 2.5 tdi sounds great. What cars were these fitted to? Were these engines fitted in-line (as per the coupe) with a FWD layout? I know getting the motor in the car is only half the battle. The ecu and wiring will be a right pain. Just gathering info at the moment. JB

17-09-08, 02:32 PM	#10
joe90 Grown up member Join Date: May 2008 Location: Leeds Posts: 450	[quote=JasonB;18430]Nice to see a few replies! LPG was considered (parts are available on ebay) but the coupe already has a petrol tank and a spare wheel in the boot so another tank will take up what little room I have left. /QUOTE] With regards to the fuel and gas tanks petrol/lpg you realy need to speak to a specialist company as most companys that supply and fit lpg systems remove the standard fuel tank and replace it with a tank which only holds a few gallons, and the lpg tank sits at the side, of it which results in very little or no boot loss at all.