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Engine Specific Info and Questions => IDI Engine => Topic started by: haybayian on February 03, 2008, 04:38:26 am

Title: TDI vs IDI head external signs
Post by: 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

Title: TDI vs IDI head external signs
Post by: dillenger1 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

Title: TDI vs IDI head external signs
Post by: jimfoo 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.

Title: TDI vs IDI head external signs
Post by: haybayian 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.

Title: TDI vs IDI head external signs
Post by: jimfoo 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.

Title: TDI vs IDI head external signs
Post by: jimfoo 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.

Title: TDI vs IDI head external signs
Post by: jimfoo on February 03, 2008, 07:04:17 am

Ok, pics are back. Here is what a TDI head would look like.
(http://www.66rover.com/TDIswap/slides/PICT1600.JPG)
If yours doesn't look like that, then it isn't one.

Title: TDI vs IDI head external signs
Post by: haybayian 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.