Author Topic: IDI TDI compatability (Read 21211 times)

Helliouse · « **Reply #15 on:** January 14, 2008, 01:13:39 am »

So, let me get this right, you have a 1Z head, that is fitting on you 1.9l AAZ, and a AAZ head can fit on a 1.6l, so, this means I may have to buy a new head?

If so, what do I do with my pistons? DI pistons are far from the same as my lowly 1.6l pistions.

Please let me know as my motor is sitting in pieces right now, and have pump just about ready to head to Giles, and a 1.9l idi head to send to Dave...

jimfoo · « **Reply #16 on:** January 14, 2008, 01:39:53 am »

So far, there aren't any 1.6 TDI pistons available, though Mr Prothe says he's working on it. Doing a little looking, the 1.2 TDI PD engine has the same bore and stroke, but I don't know if the pins are the same size and in the same place as on a 1.6.

jtanguay · « **Reply #17 on:** January 14, 2008, 09:09:47 am »

Quote from: "jimfoo"

So far, there aren't any 1.6 TDI pistons available, though Mr Prothe says he's working on it. Doing a little looking, the 1.2 TDI PD engine has the same bore and stroke, but I don't know if the pins are the same size and in the same place as on a 1.6.

i bet they are... or pretty damn close to it. they really seem to beef up PD engines to withstand much more abuse than they actually receive... which make them great for tuning :wink:

i wonder... 1.6PD? :twisted:

jimfoo · « **Reply #18 on:** January 14, 2008, 09:53:36 am »

Quote from: "jtanguay"

Quote from: "jimfoo"
So far, there aren't any 1.6 TDI pistons available, though Mr Prothe says he's working on it. Doing a little looking, the 1.2 TDI PD engine has the same bore and stroke, but I don't know if the pins are the same size and in the same place as on a 1.6.

i bet they are... or pretty damn close to it. they really seem to beef up PD engines to withstand much more abuse than they actually receive... which make them great for tuning :wink:

i wonder... 1.6PD? :twisted:

But does a PD head fit on a 1.6 block? Looks like some one elses turn to create a new franken motor.

Helliouse · « **Reply #19 on:** January 14, 2008, 12:05:50 pm »

I am not sure how 1.2l can have the same bore and stroke, as this would make it a 1.6l, unless head volume is way, way less.
If indeed the head volume is .4l smaller then I can't see why it wouldn't be the same engine, VW is very smart, why build a different block (R&D, manufacturing) when you already have one that will work, $$ and all.

If the head volume isn't .4l smaller then either the bore or the stroke has to be different, one hopes it is the stroke!

Though this does give me some hope as to a top secret project I am working on!
And on that note, does Mr Prothe have any expected finish date, and a cost?
I will have to PM him to see…
So very promising!!

jimfoo · « **Reply #20 on:** January 14, 2008, 12:48:26 pm »

Because a 1.2 is a 3 cylinder.

RabbitJockey · « **Reply #21 on:** January 14, 2008, 05:15:43 pm »

interesting this thread is

subsonic · « **Reply #22 on:** January 14, 2008, 07:18:12 pm »

Quote from: "Trev0rbr"

interesting this thread is

http://www.youtube.com/watch?v=IRd9PGmAQUE&feature=related

Vanagoner · « **Reply #23 on:** January 14, 2008, 08:28:41 pm »

Ignorant, my question is-

what is a PD?

jimfoo · « **Reply #24 on:** January 14, 2008, 08:33:18 pm »

A tdi engine that uses a small cam driven injection pump with one pump per cylinder. They mount in the head under the valve cover, but are electronically controlled.

jtanguay · « **Reply #25 on:** January 15, 2008, 07:26:35 am »

PD = Pump Duse - German for Pump Injector / Unit Injector.

gldgti · « **Reply #26 on:** January 23, 2008, 06:32:38 am »

there were many diesel models produced.

there was a 1.9L SDi non turbo direct injection engine. also a 1.9 IDI N/A. then theres the mechanical injection 1.9LTDi using the Bosche VE injector pump. there are few differences between the first TDi's and the AAZ - injectors, camplate, pistons.... no precups... not much more.

lots of stuff is interchangeable.... great aint it?

so the 1.6 is 76.5mm bore right? surely theres a TDI piston with that diameter.

jimfoo · « **Reply #27 on:** January 23, 2008, 10:18:28 am »

The 1.2 mentioned above. Elsewhere, someone found they cost $250 each.

jtanguay · « **Reply #28 on:** January 23, 2008, 10:19:14 am »

Quote from: "jimfoo"

The 1.2 mentioned above. Elsewhere, someone found they cost $250 each.

just wait for the chinese to start ripping them off :wink:

jimfoo · « **Reply #29 on:** January 23, 2008, 10:20:10 am »

You going to be first in line? :wink: