Author Topic: TDI vs IDI head external signs (Read 2834 times)

haybayian · « **on:** February 03, 2008, 04:38:26 am »

Could someone tell me what the external signs of a TDI head are versus the IDI's. I am working on a reman 1.9 TD and I would like to make sure that the shop did not sell me an IDI engine with a TDI head. I am aware that this may be a profoundly stupid question, but bear with me I am new to these engines.

Thanks.
Haybayian

dillenger1 · « **Reply #1 on:** February 03, 2008, 04:59:31 am »

The valve cover will have recesses for the cover bolts.The side profile looking down is wavy on a tdi.Also the oil cap looks like a gas cap on the tdi.HAHA i dont know if this helps i dont have any cating no.s

jimfoo · « **Reply #2 on:** February 03, 2008, 06:25:41 am »

It doesn't have threaded holes for the injectors. Your injector lines won't fit on the injectors.

haybayian · « **Reply #3 on:** February 03, 2008, 06:28:02 am »

Quote from: "dillenger1"

The valve cover will have recesses for the cover bolts.The side profile looking down is wavy on a tdi.Also the oil cap looks like a gas cap on the tdi.HAHA i dont know if this helps i dont have any cating no.s

My hope is that someone here will be familiar with the actual alloy castings; they are bound to bear different numbers and perhaps ports size and locations.
Thanks for trying.

jimfoo · « **Reply #4 on:** February 03, 2008, 06:32:34 am »

Ports are the same. Just look at my IDI to TDI thread and you will see what a TDI head looks like(of the only kind that would fit on). The upper water hose has the bolts vertically instead of diagonally.

jimfoo · « **Reply #5 on:** February 03, 2008, 06:38:34 am »

Well crap, I guess I have to fix the links to the pics. Guess it's my host's problems.

jimfoo · « **Reply #6 on:** February 03, 2008, 07:04:17 am »

Ok, pics are back. Here is what a TDI head would look like.

If yours doesn't look like that, then it isn't one.

haybayian · « **Reply #7 on:** February 03, 2008, 07:10:02 am »

Quote from: jimfoo

Ok, pics are back. Here is what a TDI head would look like.

Thanks very much Jim,
Yes I can see the shape of the casting (Wavy line). Mine is indeed an IDI.