VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => IDI Engine => Topic started by: curtis1 on July 24, 2009, 06:40:42 pm
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i have a 1.6td engine in my vw caddy, engine code 1v. i have been told the 1.9td head is better to have. in my local scrapyard there is a seat cordoba estate with a 1.9 tdi engine.. however it is a manual fuel injection?
will this fit my engine?
not sure on the engine code as i couldnt see it, but its either 1z/AHU if its the 90bhp or AFN/AVG if its 110 bhp..
all info is appreciated :)
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Although the heads are dimensionally similar the design of a TDI head is completely different than an IDI head... here's a thread with some cross-sections that may help explain the differences:
http://www.vwdiesel.net/forum/index.php?topic=20109.0
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if it had a manual pump i doubt it was a tdi. what did the valve cover look like.
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the rocker cover and head looked pretty much the same as my 1.6 td, but if you look here..
http://en.wikipedia.org/wiki/SEAT_C%C3%B3rdoba
and scroll down to the table, its the seat cordoba estate (vario) and it lists that as a tdi? ???
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in other words, if its a TDI, then the head will not even come close to working on a 1.6.
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the rocker cover and head looked pretty much the same as my 1.6 td, but if you look here..
http://en.wikipedia.org/wiki/SEAT_C%C3%B3rdoba
and scroll down to the table, its the seat cordoba estate (vario) and it lists that as a tdi? ???
Remember, Wikipedia is not pure fact, but the impressions of the author of any given definition. A detail like this could easily be wrong on Wikipedia.
The question is, the injection pump - is it simply mechanical ? With your valve covers looking the same, I doubt it could be a TDI.
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yeh it is mechanical
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I recall first gen TDi's were mechanical in the mkiii...
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so does that mean it will fit?
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I recall first gen TDi's were mechanical in the mkiii...
i have never heard anyone talk about a mechanical mk2 VW tdi. that engine would be worth its weight in gold. people wouldnt have to build an M-TDI anymore. and besides, VW mk2's were only made until late 92. they didnt even start producing the TDI until like 96 or 97? and that is late mk3 and mk4 territory there. are you sure you arent dealing with an AAZ?
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thats what i was just about to say. thanks for finishing my thought process andrew. ;D
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I recall first gen TDi's were mechanical in the mkiii...
i have never heard anyone talk about a mechanical mk2 VW tdi. that engine would be worth its weight in gold. people wouldnt have to build an M-TDI anymore. and besides, VW mk2's were only made until late 92. they didnt even start producing the TDI until like 96 or 97? and that is late mk3 and mk4 territory there. are you sure you arent dealing with an AAZ?
Note this says mk3 here. ;)
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I recall first gen TDi's were mechanical in the mkiii...
i have never heard anyone talk about a mechanical mk2 VW tdi. that engine would be worth its weight in gold. people wouldnt have to build an M-TDI anymore. and besides, VW mk2's were only made until late 92. they didnt even start producing the TDI until like 96 or 97? and that is late mk3 and mk4 territory there. are you sure you arent dealing with an AAZ?
Note this says mk3 here. ;)
i swear it said mkii earlier. swear to god. maybe my eyes missed the extra i.
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so will it fit?
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sounds like its an AAZ engine mate, i got my old AAZ out of a seat toledo
did it look any thing like this?
(http://i46.photobucket.com/albums/f124/shabber/2008_0113pics0010.jpg)
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like we have been saying, a direct injection head fits on a direct injection engine. even if its mechanical or electronic, it will still only bolt to a DI engine. if its mechanical and indirect injection, then it will fit on a 1.6 or an aaz.
so you need to determine if its direct or indirect injection. take a picture. we cant look at your thoughts. lol.
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it looks more like the picture posed by libbybapa, i did get a pic but it was off my phone and isnt very good.. however i did find the engine code out do be AHU.. any ideas guys?
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it looks more like the picture posed by libbybapa, i did get a pic but it was off my phone and isnt very good.. however i did find the engine code out do be AHU.. any ideas guys?
AHU is a TDI engine code, so it will not work on an earlier indirect injection engine.
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... and it's electronic fuel control. ;)
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... and it's electronic fuel control. ;)
Using a VE series Bosch pump. :D
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right, thanks guys.. im not tryin to question you as to why it wont work, but could you explain simple terms why it doesnt work? just to build my knowledge a little bit as i am new to these engines..
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Probably the easiest way to look at this is to refer to the cutouts I linked to in post #2.
The IDI head has metal inserts that form a pre-combustion chamber... the nozzle squirts fuel into the pre-combustion chamber in the head which burns and pushes out the hole in the prechamber... down goes the piston.
The TDI has no pre-combustion chamber... fuel is injected directly into the combustion chamber formed by depressions in the piston.
So the heads are totally different and the pistons are total different... and the fuel pump is totally different.
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Probably the easiest way to look at this is to refer to the cutouts I linked to in post #2.
The IDI head has metal inserts that form a pre-combustion chamber... the nozzle squirts fuel into the pre-combustion chamber in the head which burns and pushes out the hole in the prechamber... down goes the piston.
The TDI has no pre-combustion chamber... fuel is injected directly into the combustion chamber formed by depressions in the piston.
So the heads are totally different and the pistons are total different... and the fuel pump is totally different.
and those godly turbos they come with XD
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most of those godly turbos they came with bolt right on our engines. i think my VNT is pretty godly compared to all my other turbos. i have seen it put out over 35 psi, and it didnt explode. i bet a t/3 or k24 would explode at those boost levels.