Engine options

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Engine options

Postby davidoft1 » 08 Nov 2019, 10:54

Morning folks

Due to having a very rotten syncro and a very clean caravelle I’ve decided to convert my caravelle to a syncro, this is slightly complicated by the caravelle being 2.1dj petrol automatic and the syncro being diesel, I have every nut bolt and washer to convert to diesel. the engine is already an aaz, new cambelt, gearbox has had work in the last few years , seems to drive ok, engine runs sweet , original fuel pump too, sooooooo

My question is which way would you go, diesel, or petrol, gearbox and diff may need work on ratios if going petrol I suppose , diesel much better on fuel

Some say diesel is very noisy ?, I run a Westy diesel , seems ok to me

Thought opinions etc ?

Thanks
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Re: Engine options

Postby clift_d » 08 Nov 2019, 14:22

Unless you've got a really good reason to go the other way then I'd stick with whatever the Syncro is currently, i.e. diesel, otherwise you'll have a whole bunch of additional work to do and some extra parts to find. If you go diesel then, as you you've already noted, you'll pretty much have everything you need already.
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Re: Engine options

Postby mattlad » 09 Nov 2019, 11:15

Hi Mr Oft

Sounds like a good project. Can’t see why a diesel in a syncro would be any different to in your westy really.
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Re: Engine options

Postby silverbullet » 09 Nov 2019, 12:12

Run the AAZ until it goes pop, then swap it for a more modern petrol I4?

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Re: Engine options

Postby davidoft1 » 13 Nov 2019, 10:19

silverbullet wrote:Run the AAZ until it goes pop, then swap it for a more modern petrol I4?

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14 inch syncro yes, but I have a spare too :D
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Re: Engine options

Postby davidoft1 » 13 Nov 2019, 10:19

I was also after peoples experiences of diesel over petrol and fors and againsts etc
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Re: Engine options

Postby Splurt » 13 Nov 2019, 13:29

I went from a 1.6T JX high top westy to a 1.8T AGU hightop syncro.

In my experience the JX was reliable although very slow. The lack of power was fine when I developed the patience. I always fancied a TDI conversion but was slightly put off by what I read about the effects of the extra torque on the gearbox and drive train. Probably fine with a sympathetic driving style and occasional use, and a high standard conversion. Fuel economy was 30-35mpg.

My westy rusted away beyond repair so rather than restore and convert to TDI I ended up with the 1.8T AGU syncro. The difference between the two is night and day. The petrol is a dream to drive. Really smooth and responsive. It isn’t going to win any races but the power is there if I need it. From what I have read and been told it is easier on the gearbox and drive train than a TDI. I haven’t owned it for long enough/covered enough miles to speak of reliability, s, so far so good. Fuel economy is 20mpg at best. So I end up driving around at the same speed as in the jx anyway!

We use the van for holidays so the price of fuel is just factored into the trip. We generally wildcamp so this saving balances it out for us. Ultimately we want to be spending 1-3months a year away, gradually covering all of Europe and maybe beyond. What your using your van for is a key factor.

I always would have chosen a diesel over petrol previously but now wouldnt swap back. Swings and roundabouts
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Re: Engine options

Postby lloydy » 13 Nov 2019, 15:13

did you mount it upright or at 50 degrees?
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Re: Engine options

Postby Splurt » 13 Nov 2019, 17:33

lloydy wrote:did you mount it upright or at 50 degrees?


It’s upright. I forgot that raising the engine bay would take a lot of work for the upright install and there would be quite a few other modifications/custom parts required also.

My knowledge is limited as it wasn’t me who installed it, it’s Russell’s fine work. I wouldn’t know where to start!

It Is lovely to drive though
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Re: Engine options

Postby lloydy » 13 Nov 2019, 18:36

ah Russel, ok. yes he mounts them upright with his own kit.
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Re: Engine options

Postby DSM » 13 Nov 2019, 21:11

The AGU will fit upright (15 degrees) under the deck lid if you drop the drive train by 20mm but it's a lot of work.
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Re: Engine options

Postby 4x4 Bus » 15 Nov 2019, 22:38

Dropping the drive train on a syncro is a massive compromise for obvious reasons. Not great on a 2wd either. I lift the engine bay hight by 50mm on all my conversions to keep ground clearance.
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Re: Engine options

Postby lloydy » 16 Nov 2019, 15:41

is the fitting 'kit' something you would ever sell separately? (also seem to remember you looking into using the diesel bellhousing so a dmf can be used?)
although i have a agg here ready to go, im not liking the sound of the reported 21mpg in a syncro
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Re: Engine options

Postby rollercoaster » 16 Nov 2019, 20:33

The 1.8T seems to be a very efficient engine and a real pleasure to drive in a syncro.
Not sure of the mpg but its certainly better than the old 2.1 DJ
Also it is very tunable so I am told, so perhaps it could be more economical if that was what was wanted.

My gear ratios are as they were before, and just about right,
the massive spread of torque means generally less gear changing anyway.

Things are looking grim for diesels in The City, and more exclusion zones are planned..
we may be better off with petrol conversions but please no one hold their breath!
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Re: Engine options

Postby lloydy » 17 Nov 2019, 09:53

yeah, im keeping the diesel for now, ive heard 1.8t get about 23mpg? Which is better than the AGG, but not by too much. my diesel gets 29mpg. I'd quite like to get a engine ready to go, for when diesel gets impossible around here
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