1.6 vs 1.9

[fspGTD]

In the US 1.6Ds are very plentiful, but genuine 1.6lTDs are quite rare and hand to find.  Perhaps the situation is different in canada.  Also, in the US 1.9lTDs are nonexistent and must be imported.

Of course, if you can find a 1.6lTD by all means go for it, but I've found that turbo'ing a 1.6D works very well, provided that exhaust gas temperatures are kept in a safe adequately low area.  Tuned as such, I can't imagine why a turbo'ed 1.6D wouldn't give as reliable and as long service life as a genuine 1.6lTD.  I would advise tuning the motor so that exhaust manifold temps peak 200-300 deg. F or more below stock 1.6lTD peak temperatures.  The reason for this (as has been mentioned here already) is that the pistons and valves in the 1.6lNA aren't designed to handle as much heat as the 1.6lTD.

I believe that mechanically, a 1.6lNA (12mm head bolt and TD-crank snouted version, with a TD harmonic balancer pulley added on) is capable is handling the same cylinder pressures and internal forces as a genuine 1.6lTD.

[Laurentian]

Black Tie is 110% right, don't put a turbo on the 1.6D!  I have been offered 1.6TD for 350.00 with tranny and pump. The 1.9TD's are harder to find and much more expensive.
I'll keep my present 1.6D until I come across a deal over the winter. I am hoping maybe to find a deal in January after the holidays when everyone is strapped finacially :shock:  :roll:

[carrizog60]

the 1.6D rebuilted cost me about 500€(+- the same as dollars) and a 1.6td without warranty or known mileage is about 800€...
i went 1.6d because the mecanic assured me that it will work right so...
fspGTD: what kind of tune is done to keep the temp down?
it will be intercooled(seat toledo tdi 110hp)and will have the 1.6td oil cooler and will be running a kkk24.
how to tune then?
how high can i turn the boost?

[carrizog60]

ah, the 1.6D came with a 4T gearbox and new clutch...

[Maarten]

Where are you from (since your talking in €€)? a complete 1.6TD can be had for about 150-250 euros depening mileage WITH warranty

The gearbox/clutch can be used on the TD.

I suggest you take a K14/T2 turbo and stay below 0.7bar and keep the fuel down. It will be just like a ECO 1V, no boost enrichment and just a bit more HP and beter fuel economy.

[carrizog60]

i am from portugal...prices are 750 up... :evil:

[Maarten]

And in Spain too? 500 could be worth a drive  

[carrizog60]

in spain, a company named VEGE sold one almost new for 1900€ plus the old engine... :roll:

[Slave2School]

1.6D dosn't have oil squirters either does it?

[BlackTieTD]

no it does not.

[Laurentian]

Hey guys, looks like I found me a '97 Jetta 1.9TD nice and rusty with broken bumpers and all. Will let you all know as the week goes on.
Finally found my do :wink: ner car!

[fspGTD]

To see how hot things are actually getting, install an exhaust gas temperature gauge / pyrometer, and install it pre-turbine.  Stock 1.6lTD peaks at 1500 deg. F pre-turbine, and you'll want to have yours peak considerably cooler.  I've had the VNT 1.6D heated up to 1400 deg. F before (that was tested before it was intercooled), and although it survived, I'd recommend taking a conservative approach to tuning yours and staying well below that.  If you use one of the larger, lower backpressure 1.6lTD turbos (either the Garret TA0304B or the KKK K24), combined with an efficient intercooler and a large diameter exhaust system from turbine outlet on back with a free flowing muffler, your exhaust gas temps won't be able to get anywhere near the 1500 deg. F that the 1.6lTD can see stock, assuming you aren't doing any really wild fueling mods.  It's probably best to leave the really wild fueling mods to those motors with the oil squirters! :wink:

[carrizog60]

i am using the kkk24 but free flow exhaust is not an option.
in portugal inspections are very conservatives... :x
can i run, say, 1bar?
this will be a car for daily driver, not highway use...

[fspGTD]

Running additional boost is actually adviseable as long as the turbo is still working in an efficient area, as it will cool EGTs additionally with an intercooler and while conservative fueling.  The Garrett T3 or KKK K24 should maintain high efficiency on a 1.6lTD, to 14 psi or perhaps slightly more.  I measured post-compressor intake temps of 200 deg. F at 14psi with a Garrett T3 on a 1.6lTD.

The motor is going to run hotter with the stock restrictive exhaust, so plan on keeping the fueling levels extra conservative.  Also if you want to verify for yourself that the peak EGTs are safe, do use a pyrometer and mount it pre-turbine.

Also, some kind of oil cooler is a very good idea, if not a necessity with a turbo addition.

Hope this helps, and good luck!

[VWRacer]

To see how hot things are actually getting, install an exhaust gas temperature gauge / pyrometer, and install it pre-turbine.  Stock 1.6lTD peaks at 1500 deg. F pre-turbine, and you'll want to have yours peak considerably cooler.  I've had the VNT 1.6D heated up to 1400 deg. F before (that was tested before it was intercooled), and although it survived, I'd recommend taking a conservative approach to tuning yours and staying well below that.

I've had a lot of experience with turbo'd engines without oil squirters, and 1350 deg. F (730 deg. C) is about as hot as you want them to get. If you add the turbo but leave the fueling alone, you will get a nice little performcnce boost with virtually no rise in EGT.