Cylinder head differences AYP/ AGU?

[joehirth]

Apart from the engine code embossed on the little tab are there any differences in cylinder heads on the 1.8t family? I'm looking to buy a Ibiza Cupra cylinder head AGU code I think, and put it on my AYP engine in my Ibiza Cupra R. I will be rebuilding it with supertech stainless valves and getting it ported and polished, if this makes a difference?

 

[ibizacupra]

it aint agu off an ibiza. agu is largeport off early cars, golf, a3 etc

 

[joehirth]

it aint agu off an ibiza. agu is largeport off early cars, golf, a3 etc

Ahh he did say he may of got confused with lettering.... even so if I bought it and then relevant valves etc would this be alright for my engine?

 

[ibizacupra]

largeport will suit a BT lovely
your inlet manifold is smallport remember

 

[joehirth]

On the lookout for an AGU head now then

Also Bill does it mean the cams/followers are different or is it just the valves?

 

[tashacupra]

ADR is also largeport that's what I have.
Followers are the same iirc but cams can varie due to some of the heads being from non turbo 20v lumps.

 

[joehirth]

OK, so next question would be can I swap my cams over from my AYP head to the ADR/ AGU head if they are different?

 

[PhilW]

ADR is also largeport that's what I have.
Followers are the same iirc but cams can varie due to some of the heads being from non turbo 20v lumps.

I dont think ADR is a large port. Thats a N/A 20vt small port.

AEB, AGU and i think one other one is AJL?

 

[joehirth]

Ahh round in circles,

 

[tashacupra]

http://www.seatcupra.net/forums/showthread.php?t=195054&highlight=ADR&page=2

Post #21, I was unsure myself so asked the question and this was the answer I got, was good enough for me.

 

[PhilW]

Every other bit of info ive seen says its a smallport tho.

http://www.torquecars.com/audi/18T-tuning.php

http://www.torquecars.com/audi/18T-tuning.php

http://www.esetuning.com/NewSouth-Performance-1-8T-PowerGasket-Plus-p/gas-005.htm

http://www.rossmachineracing.com/20vVWintake.html

http://www.newsouthperformance.com/pgchart.htm

 

[tashacupra]

No idea then phil, can anybody else shed any light on it? What should the inlet port size be on a large port in mm, I'll have a measure up.

 

[PhilW]

Im not sure either, be good to know tho as it gives more options on largeports.

I cant remember now but im sure bill has the info in the phenolic spacer thread.

 

[ibizacupra]

I dont think ADR is a large port. Thats a N/A 20vt small port.

AEB, AGU and i think one other one is AJL?

ADR is largeport non turbo
AEB,AGU largeport turbo

I have run ADR on mine originally, the a couple of AGU's, and an AEB sitting on my shelf - all largeport

 

[tom w]

Might be a daft question but what are the benefits of fitting a large port head? Do you only see the benefits on bt?

 

[joehirth]

ADR is largeport non turbo
AEB,AGU largeport turbo

I have run ADR on mine originally, the a couple of AGU's, and an AEB sitting on my shelf - all largeport

Might be a daft question but what are the benefits of fitting a large port head? Do you only see the benefits on bt?

Thaks Bill cleared it all up I will probs be getting an AGU head then.

tom w At an educated guess I suppose it's to allow a higher rate of air flow both in and out of the engine.

 

[tashacupra]

Well people I have had a measure up of the ADR code head I have sitting here and the results are as follows:
Inlet ports measure 43mm x 22mm.
Exhaust ports measure 33mm.
Part number is 058 103 373 D.

So according to the measurements on page 12 of bill's phenolic insulator thread that makes the head a SMALLPORT not a large port as previously thought.

So I now have 2 small port heads

 

[PhilW]

Well people I have had a measure up of the ADR code head I have sitting here and the results are as follows:
Inlet ports measure 43mm x 22mm.
Exhaust ports measure 33mm.
Part number is 058 103 373 D.

So according to the measurements on page 12 of bill's phenolic insulator thread that makes the head a SMALLPORT not a large port as previously thought.

So I now have 2 small port heads

Thanks a lot for that. Good to know.

 

[ibizacupra]

Well people I have had a measure up of the ADR code head I have sitting here and the results are as follows:
Inlet ports measure 43mm x 22mm.
Exhaust ports measure 33mm.
Part number is 058 103 373 D.

So according to the measurements on page 12 of bill's phenolic insulator thread that makes the head a SMALLPORT not a large port as previously thought.

So I now have 2 small port heads

unless ADR was available in large and smallport, and thats something new to me, the ADR head i ran was largeport with 55mm wide ports

 

[tashacupra]

unless ADR was available in large and smallport, and thats something new to me, the ADR head i ran was largeport with 55mm wide ports

That is a thought that crossed my mind Bill maybe ADR was the head in production when vw/audi started to play with port sizes so in turn there is some of each in that code .

Any idea what the part number was on your ADR Bill?

The ADR i have was from a friend who runs a specialist vw/audi brakers yard so i only gave peanuts for it, but i'm sure he had another ADR head there if not two more, next time i'm over there i'll have a look and a little measure up if there still there.