Update from Bonneville (Land Speed Racing Content).

[vanbcguy]

I still haven't seen a dyno slip of a TDI making peak power at as high of an rpm as the IDI's.

Not seen this 392hp (crank) ALH then, pushing all the way to 5800rpm before power rolls off

It did 470hp (crank) with NOS...

Those crazy guys in Finland

that is the first really impressive slip RPM wise for a TDI I have seen, still it starts to fall off earlier than an IDI would with the same amount of work I am sure. The black line shows it falling around 4300 and the green line starts to level right there as well before climbing a little bit later. Being that it is not a 1/4 mile drag race and a friction drag race it is clear that the higher rpm the peak is without leveling off would be best in theory...unless you have an 18 speed trans to always keep you in the best rpm/power. Again also, the ALH is a completely different engine setup than the 1.5 up to AHU and he really doesn't want to re fab the entire truck he has said.

That said, I don't see an aaz making 392hp at much of any RPM, so the TDI would definitely have a huge power advantage. Maybe the 2.0 short stroke weird deal CRSMP5 had made way back that didn't keep a fiber HG together would work better??? Another question is would this TDI in the chart hold together for the 3 mile course with the follow up 3 mile to confirm?

200+ HP on a 1.9L TDI is pretty commonplace these days.  The PD engines have no issue getting in to the 300-350 HP range with appropriate modifications.  The biggest challenge on the older engines is really the computer - there are limits to what you can do with the earlier electronics platform plus the AHU/1Z platform has chips that need to be swapped out in order to make anything happen.

There are only a very few high horsepower AAZs out there that I've seen.  I can't really recall seeing anything over about 220 HP on the IDIs but there's tons of TDIs running around there.  Remember there's only so much pressure you can build inside the prechamber before you just blow it out of the head!

[Alcaid]

There is a 270hp (@ crank) 1.6TD single turbo in Finland, dyno papers exist, VERY laggy setup

I am attempting to break the 300hp (@ crank) boundry this upcoming spring with my 1.6TD compound turbo while still maintaining a decent midrange and response, let's see how that goes, hoping for 270-280whp and a ***load of torque.

[Jetmugg]

The Finns, Norwegians, and Swedes never fail to impress with diesel power.

I'm keeping an eye on all these developments until I can afford to do something about it.

Currently, I'm exploring the possibility of building a 2-liter diesel based on the VW 9A gasser block and some non-standard pistons.  It's plausible, but I'm not yet sure if it's my favorite approach.

Building something like a 250HP 1.6TD for the 2 liter class (actually 1.51 - 2.0 L) would definitely get the job done against the current Bonneville record in G/DT (2 liter diesel truck).  Giving up the displacement between 1.6 and 2.0 might not be much of a sacrifice after all!

Steve.

[Jetmugg]

If any of you Northern Europeans would like to travel to the USA and put your names in the Land Speed Racing record books, feel free to buy a plane ticket for yourself and ship your engine setups over.

We can do a quick engine swap (shouldn't take more than a few hours), and go chase some records.

Steve.

[theman53]

MJF on here had a 1.6td that he daily drove with a vnt turbo on it making IIRC right around 250hp.

[Jetmugg]

Lucas:

   Do you want to offer an estimate of what the engine in your Jetta is making, HP wise?

Steve.

[Jetmugg]

Here's a link to GoPro footage of my 135 mph qualifying run.....

https://www.youtube.com/watch?v=8ppI9AEdvWA&list=UUtJ8BFry5_gAIhYO8EhDbGg

[745 turbogreasel]

Looks like you are super stable at speed.

[vanbcguy]

The Finns, Norwegians, and Swedes never fail to impress with diesel power.

I'm keeping an eye on all these developments until I can afford to do something about it.

Currently, I'm exploring the possibility of building a 2-liter diesel based on the VW 9A gasser block and some non-standard pistons.  It's plausible, but I'm not yet sure if it's my favorite approach.

Building something like a 250HP 1.6TD for the 2 liter class (actually 1.51 - 2.0 L) would definitely get the job done against the current Bonneville record in G/DT (2 liter diesel truck).  Giving up the displacement between 1.6 and 2.0 might not be much of a sacrifice after all!

Steve.

A 250-HP single turbo AHU or 1Z with a mechanical pump is NOT a hard build at all.  No custom parts needed other than the injection pump.  Heck you could probably do that on a stock TDI bottom end without too much issue assuming you have a larger turbo - what kills them is low RPM torque, not something that's a huge concern with a large wastegate turbo.  An AHU would be better than a 1Z if you want to keep the bottom end stock as the pistons are slightly improved.  If you are making a fresh yummy engine then use ASV pistons for stock compression or ASZ/ARL pistons if you want to drop it a little (for high boost). They have a nice big oil cooling gallery inside to keep the piston crowns cool.

The other BIG reason most e-TDIs fall off around 5K is that the stock computer maps don't extend past there.  It's apparently quite difficult to expand the RPM range of the computer on those engines.  M-TDIs have no such problems.

A 12mm pump head with .341 injectors and a big turbo is about all you'd need.  Smoky for sure, but that injection setup can support 300 HP no problem.

[theman53]

Lucas:

   Do you want to offer an estimate of what the engine in your Jetta is making, HP wise?

Steve.

I would love to but I have no idea where to guess. I have called 5 places in ohio that advertise chassis dyno but all said no diesels. If I were to throw out a number I would guess the limit of this pump is where I am at...10mm head and aaz camplate/rotor

[Jetmugg]

Dang (no diesels on their dynos)

Drag racers get pretty good numbers for HP based on their trap speeds.  It would not surprise me even a little if you were on the high side of 200HP.

Meanwhile, daydreaming 2.0L combinations - think about this for a minute...

ABA "tall" block, Ford 1.8L IDI diesel pistons (Ford UK), 9A/ ABA crank, TDI rods.....

On paper it looks like it would all bolt together.

Steve.

[theman53]

It is weird, I would say you could be correct, but I don't want to throw out the 200 number and when I find a dyno that does it and I have 150hp. I can say it runs good and stays very cool, now that it is 70s out and the boost is 30-35psi I don't see 700f egt...need more fuel.

I think you have a great idea to start a build up of the 2.0...I have always dreamed of the Cumins P pump for the 4b being built for my car, no shortage of fuel there

[Alcaid]

The HE221W version theman53 is using will be turbime limited at 195-200whp, he is not up there with a 10mm pump clearly indicated by low EGTs (out of fuel)

[vanbcguy]

Lucas:

   Do you want to offer an estimate of what the engine in your Jetta is making, HP wise?

Steve.

I would love to but I have no idea where to guess. I have called 5 places in ohio that advertise chassis dyno but all said no diesels. If I were to throw out a number I would guess the limit of this pump is where I am at...10mm head and aaz camplate/rotor

The reason they say no to diesels is there is no way to get a tach signal.  E-TDIs they can get it from the ODB-II port if they are equipped to do so, but the lack of spark plug wires to put an inductive pickup on causes them problems for the most part.

[Alcaid]

Speed on the rollers is easily translated in to rpm by wheel circumference and gearbox ratio.

Find a Dynapack hub dyno nearby, they only need those factors to dyno a diesel.