AEB HEAD

[señorfrog]

Hi, im new to the forum and had a doubt though ivwe been reading for a while i decided to register today.
I see that alot of people use the AEB head because of its larger intake ports, but as i read here http://forums.vwvortex.com/zerothread?id=3883030 it says that the AEB head is a non VVT head. Doesnt this give you a disadvantage?
Could i fit that into my 04 A4Q? And will it gain a noticeable advantage? APR stg 1.

[A4 TSCHUSS]

VVT is only the tensioner assembly for the cam chain. You can put a VVT tensioner into a AEB if you want. It is an emissions thing that Audi/VW went to in the newer cars. It isnt like Honda's Vtec that allows more power at higher rpms since it switches cam lobes.

And an AEB head isnt gonna help you with a stock car (me considering your car stock with it only being chipped).

[señorfrog]

VVT is only the tensioner assembly for the cam chain. You can put a VVT tensioner into a AEB if you want. It is an emissions thing that Audi/VW went to in the newer cars. It isnt like Honda's Vtec that allows more power at higher rpms since it switches cam lobes.

And an AEB head isnt gonna help you with a stock car (me considering your car stock with it only being chipped).

So i just install the tensioner i have in my old head into the AEB one and thats it? Or is it a special one? If its no prob could you send me a link to see what are we talking about.
And i plan to get a larger turbo in a future. Thanks

[A4 TSCHUSS]

It is the unit on the very back of the head bolted to the top with a plug on it. The tensioner part is under the valve cover but the actuator part and plug you can see on the back of the head.

You will need to get an Audi tensioner tool that compresses the tensioner so you can take the chain off and pull the cams out or you can do it without the tool by grabbing the cams as a whole assembly with the tensioner and take it out as one. It is a little more tricky to do that way but that is how I do it. There are little notches on the cam sprockets that point straight up to line up with an arrow on the cam caps right near the sprocket. You line those notches up and then from one notch on one cam to the other notch on the other cam you need to have 16 pins on the chain.

[señorfrog]

I have the tool, what i want to know is if my cam chain tensioner will fit on the AEB head, or if i will have to buy a different one!

[A4 TSCHUSS]

they are identical besides having larger intake ports (aeb) and then the extra part on the tensioner (amb). Will go right in.

[dirtybrd]

Yes, you can make an AEB head have VVT, just add a VVT tensioner like David said.

[absolutegtr]

Is possible to a AMB head on an AEB motor?

My friend doesn't mind if I switch heads with his 1997

[A4 TSCHUSS]

yes but you will need to get an sai block off plate from integrated engineering since the newer A4 came with the emissions pump stuff on it so there is a port on the back of the head that will need to blocked off on the AMB head when you put it on the AEB motor and then you will need to remove that stuff from your car.

[absolutegtr]

Yea I wrote up the DIY on the removal of all that junk so I yea, I don't have any of it anymore LOL

So I won't running into any issues with a AMB VVT head on a nonVVT car?

[Wizard-of-OD]

Yea I wrote up the DIY on the removal of all that junk so I yea, I don't have any of it anymore LOL

So I won't running into any issues with a AMB VVT head on a nonVVT car?

Should not be an issue.

[absolutegtr]

Should not be an issue.

Thanks. Also will my DBW throttle directly bolt up to the AEB intake manifold and viceversa (will his nonDBW thottle body directly bolt up to the AMB intake mani?)

[A4 TSCHUSS]

no his dbc wont bolt up to amb persay. The throttle body will bolt up but there are holes on the aem where a bracket goes to hold the cable which arent on the amb. You will need to find a aeb mani for sale somewhere.

[AudiA4_20T]

no his dbc wont bolt up to amb persay. The throttle body will bolt up but there are holes on the aem where a bracket goes to hold the cable which arent on the amb. You will need to find a aem mani for sale somewhere.

true, you need to buy him the transition gasket and let him run his old AEB mani

[dfaudi]

I just picked up an AEB head. I want to build it to rev higher safely (for my GT3076 setup :). What ive been told is that i really only need valve springs.
Is it worth doing the exhaust valves too?
Do i need new retainers, seats, valve oil seals if i just do the srings?

Will the B6 AMB injectors work on the B5 AEB manifold? Is the only differnce in the injector impedance?

[AudiA4_20T]

I just picked up an AEB head. I want to build it to rev higher safely (for my GT3076 setup :). What ive been told is that i really only need valve springs.
Is it worth doing the exhaust valves too?
Do i need new retainers, seats, valve oil seals if i just do the srings?

Will the B6 AMB injectors work on the B5 AEB manifold? Is the only differnce in the injector impedance?

You dont need anything besides springs. However, tops of valves have been known to come off destroying engines.

The AMB injectors should work in the AEB mani although I can't confirm it. Usually the B5 IM doesn't need spacers but you might. The injector impedance is not difference but the flow and size are

[dfaudi]

Is it worth getting the titanium retainers? Is there purpose just to keep the inertia down?

[dirtybrd]

The lighter the parts the less likely they to float.

[AudiA4_20T]

Is it worth getting the titanium retainers? Is there purpose just to keep the inertia down?

exactly, the momentum would be less in one direction so when it has to change direction its easier

[dfaudi]

Anyone know if REVO/Eurocode's GT30 file can delete the VVT cel? I just want to stick with the AEB tensioner if possible.

Any thoughts on Eurospec 272 cams?

[dirtybrd]

There's still no GT30 file AFAIK, and from what I hear is to stay away from Eurospec parts. Look into Cat cams.

[dfaudi]

Called Eurocode the other day.

They said theyd be able to do all this for me:
- GT3076R file (using ATP manifold) Boosting 20psi capable of 35 psi
- 630cc Siemens
- VR6 Maf (can also be mafless but they recommended maf)
- SAI/02 delete
- High Rev limiter to 8500 (must sign waiver)

I forgot to ask them they could eliminate the VVT. Im also shying away from the VR6 maf. Seems like a restriction imho

[dfaudi]

I can get a set of Eurospec 268's at a good price.

Why arent they recommended?

[dfaudi]

There's still no GT30 file AFAIK, and from what I hear is to stay away from Eurospec parts. Look into Cat cams.

I dont know much about cams. Which Cat cams do you recommend for my BAT setup? I just updated my sig.

[dirtybrd]

I run the 3658s. If they say they have it they must.

[dfaudi]

I think i came across a thread where you were having issues with the timing on these cams or something, or maybe it was with the VVT...you get the issues resolved?

[dirtybrd]

You may or may not be able to run VVT with the 3658's. Bob@QED told me they were never tested. Unfortunately, the only way to test them is the plug it in. If it work's great, if not, bent valves. There are no issues timing them, you align the arrows and notches with 16 links between. I just leave mine unplugged and will later sent the ECU out for the code delete. The VVT is only for @idle emissions anyway. It doesn't fuction like a Hondas does, though that'd be nice.

[dfaudi]

Id rather not run VVT especially if its only for idle. I can also reuse the AEB tensioner and leave my amb head in tact and make a couple of $ back from it.

You work out the warm start issues?

So basically if i keep the vvt unplugged ill only have a CEL? No drivability issues? Cause ive had my CEL on for the 02 sensor and im used to it. Doesnt bother me.

[Wizard-of-OD]

CAT 3652's

[A4 TSCHUSS]

but dont the 3652s have shitty bottom end and midrange power? Only good for say 5000+rpm, therefore the 3658s are a better choice?

Wonder where my Schrick 252/260 cams would fit in. I might have to get a more aggresive set later.

[AudiA4_20T]

but dont the 3652s have shitty bottom end and midrange power? Only good for say 5000+rpm, therefore the 3658s are a better choice?

Wonder where my Schrick 252/260 cams would fit in. I might have to get a more aggresive set later.

ya but the 52s do make the power.. its all preference

[dougyfresh]

You may or may not be able to run VVT with the 3658's. Bob@QED told me they were never tested. Unfortunately, the only way to test them is the plug it in. If it work's great, if not, bent valves. There are no issues timing them, you align the arrows and notches with 16 links between. I just leave mine unplugged and will later sent the ECU out for the code delete. The VVT is only for @idle emissions anyway. It doesn't fuction like a Hondas does, though that'd be nice.

There is a feature within the ECU to adjust inter-cam timing using the VVT solenoid. Mark@ASP and I messed around with it when tuning my car. Unfortunately, the way it is set up it only works as an on/off switch and is difficult to control. I think, in the end, we wound up setting slightly retarded which gave me a little bit quicker turbo spool. Its not ideal but it is a feature that can be adjusted when you have access to every map within the ECU.

However, to Chris' point... No one (to my knowledge) has tried running VVT with 3658s. I'm running 3651s with VVT.

[CO AVANT]

I even have problems running VVT on my 3651's. Thus the reason why I am not running VVT. VVT turns on/off on me at unusual times when I run it.

[dougyfresh]

I even have problems running VVT on my 3651's. Thus the reason why I am not running VVT. VVT turns on/off on me at unusual times when I run it.

Hey Jordan. My car was running flawlessly at 4,000ft the other week. Now I just gotta get 'her up near 6000-8000ft to see how it runs at even higher altitude.

[CO AVANT]

I'm wondering if it's software related...

[dougyfresh]

I'm wondering if it's software related...

Perhaps.

We did tweak a lot of things with the VVT, SAI and idle.