Why no 1.6l tdi?

[MJF]

Maybe Nüral? 1,2 has 76,5mm bore and 24mm piston pin, that info can be found from Etka. That's all I know of that engine.

[mdonau]

hi,

I am currently building a 1,7l TDI using a 1,7 SDI (engine code "AKU")

The crankshaft, conrods and pistons fit perfecly into every 1,9l DI block.
The plan is to use this engine with stock 1Z/AHU components in my VW T3 Syncro

greets, michael

[R.O.R-2.0]

hi,

I am currently building a 1,7l TDI using a 1,7 SDI (engine code "AKU")

The crankshaft, conrods and pistons fit perfecly into every 1,9l DI block.
The plan is to use this engine with stock 1Z/AHU components in my VW T3 Syncro

greets, michael

a 1.7 SDI is basically a TDI already, just without a turbo..

[theman53]

Maybe Nüral? 1,2 has 76,5mm bore and 24mm piston pin, that info can be found from Etka. That's all I know of that engine.

Need more info on this . I really would like to do a 1.6 TDI.

[MJF]

http://www.ebay.de/itm/VW-LUPO-3L-KOLBEN-KOLBE-1-2-TDI-ANY-AYZ-AUDI-A2-/320627118719?pt=DE_Autoteile&hash=item4aa6dd927f#ht_13368wt_1265

Someone should buy and measure those...

[theman53]

Find me a 4th and I will.

[JRD]

Alcan manufactured the 1.2L TDi pistons.
But I've not find anything on his site to know more about this pistons... 

[Pat Dolan]

I do understand why someone might want a 1.6TDI to keep the old 1.6TD block fleet in heads into the future, but, honestly, if one is looking for economical engine - just buy a 1.2l or 1.4TDI and bolt it in.  The friction from 3 pistons will trump that from 4 any day. 

If one is fixated on 4 cylinders, then just start with a 1Z or AHU and put 20% taller gearing in place.  Now you have the same swept volume at the same road speed as the previously geared 1.6 4 banger - and you don't have to diddle at all with the engine.  Friction wise, the reduction in engine speed should proportionally offset the extra ring-to-wall drag from displacement.

The bonus, of course, is that you can just drop a gear and have all of that 1.9 litre sweetness when you need it - at no extra cost.

Some times, the pragmatic solution is just hiding well behind the obvious.

[theman53]

I still am kicking this idea around. I may just buy those pistons and start measuring while the 1.6 is on the stand.

[JRD]

I do understand why someone might want a 1.6TDI to keep the old 1.6TD block fleet in heads into the future, but, honestly, if one is looking for economical engine - just buy a 1.2l or 1.4TDI and bolt it in.  The friction from 3 pistons will trump that from 4 any day. 

If one is fixated on 4 cylinders, then just start with a 1Z or AHU and put 20% taller gearing in place.  Now you have the same swept volume at the same road speed as the previously geared 1.6 4 banger - and you don't have to diddle at all with the engine.  Friction wise, the reduction in engine speed should proportionally offset the extra ring-to-wall drag from displacement.

The bonus, of course, is that you can just drop a gear and have all of that 1.9 litre sweetness when you need it - at no extra cost.

Some times, the pragmatic solution is just hiding well behind the obvious.

I'm OK with you.
But, for me, building a 1,6L TDI is more difficult and interesting than swap a 1,4L TDI!