Xu10J2Te Upgrades

[bluline 0]

Hello,

 

I have a Citroen Xantia with an Xu10j2te, stock 2.0 tct engine.

I searched many sites but is seems this engine is more popular here on this forum for swaps.

I also asked local shops if they know anything about this engine but it seems I'm out of luck

 

Currently it has a boost controller, exhaust and tune running 1 bar pressure.

I've now hit a wall in what to upgrade to do, I've read that I can swap the camshaft for a DKZ (XU9) but I am not sure.

 

Plans that I have for this engine is to upgrade internals and aid airflow, since the head gasket is starting to go out I figured this would be the best time to work on it.

 

If anyone can share some ideas and knowledge that would be awesome.

[welshpug 1,657]

more valves

[bluline 0]

Well for now I want to maintain stock head

Would port and polish the 8v head do it any justice?

[Tom Fenton 1,541]

Exhaust manifold ports are small and benefit from enlarging.

Standard cam is also restrictive, fit the 205 GTI cam.

Head work will also help of course.

After that its an ECU swap to get rid of the boost cut at 1 bar.

[bluline 0]

Thanks Tom, I will start with working on the head and fitting a DKZ cam.

Do you know if this GTI cams are a direct fit or do they require extra work?

[wicked 103 3 Cars]

I think it was drop in, but not sure. Don't expect a night and day diff because of the cam. It will give you bit more high end power.

For significant more power you need a bigger turbo and all related stuff (injectors, management etc...)

If you're running 1 bar, you're already running the turbo on max...

[bluline 0]

Every little difference in the end makes an impact, that's why I like to modify cars.

But for now I wanted to stay with stock turbo, manifold and ECU and just work on the rest.

Probably after cams and head work I will work on the brakes and fix some suspension related problems (activa )

 

Those "big" modifications ill leave for the end when I strive for more power

 

For daily driving I normally set it up to 0.8bar just to be careful.

 

Anyway I found a site selling a DKZ cam (http://www.autodoc.co.uk/ajusa/7192038), seems to be the correct one but i could be wrong.

Is there any other store that you recommend?

[petert 586]

Cutting three angle seats in those heads is one of the best mods you can do. The large, single 45 deg cut on the inlet valve seat is great for reliability but does nothing to enhance flow. Then of course blend the seats correctly into the port. Increasing port flow is free hp which might otherwise be found by winding up the boost. Any decent head place does 3 angle seats just as a matter of course these days. The place I use has a CNC seat cutter which creates the valve seat angles and blends into the port in one operation. Any place that charges extra for 3 angle seats should be avoided.

[bluline 0]

Thanks Peter, good to learn more about head work.

 

Looking at cams for selling I am wondering where to get mine.

Should I go with a standard 205gti DKZ cam, or should I get a CAT CAMS 4900365 for example?

[wicked 103 3 Cars]

If you take a catcams, take the 4900360. That's a cam for turbocharged engines. My mate has it with gt28r turbo and really adds horses. Don't know how it will behave with stock turbo. I don't think it will work with standard management.

[petert 586]

The DKZ cam and the 4900360 work well because they have less overlap period, where inlet charge would otherwise be lost across the open exhaust port. I agree that the 4900360 is probably too big for standard management. Stay with the DKZ cam for now, until you have low comp forged pistons, bigger turbo and aftermarket ECU.

[bluline 0]

Thanks ill go with standard DKZ cam for now.