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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old January 7th, 2019, 16:42   #16
Syncrogreg
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Okay so the cuaa head has intake cams and exhaust cams like the traditional CR so far. Now.. the US spec has Intake and exhaust on the same camshaft. The goal is to swirl to the max. I'm looking for a cuaa full head to try a head swap for this year piles peak run!
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Old January 8th, 2019, 16:02   #17
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Okay so the cuaa head has intake cams and exhaust cams like the traditional CR so far. Now.. the US spec has Intake and exhaust on the same camshaft. The goal is to swirl to the max. I'm looking for a cuaa full head to try a head swap for this year piles peak run!
Correct. The EA288s in the U.S. don't have variable cam timing to my knowledge and they also have the ports 90 degrees off from what a traditional engine has. So, instead of one camshaft doing all the intake valves and the other doing all the exhaust valves, each cam is doing half of each. So, CBEA/CJAA cams definitely would NOT work as a basis for the American EA288 cylinder head TDIs.

That, and has been mentioned, they come as part of the cam cage as a "modular" assembly. It was not designed to be taken apart to allow cam service, only to have the whole setup replaced as an assembly.

Of course, where there's a will, there's a way, but it will be much more labor intensive and expensive than any of the older TDIs.
Realistically, the setup is fine for higher performance designs, but higher rate valve spring rates would not be a bad thing for the extra boost pressure the 240 hp turbo setup would make.
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Old January 9th, 2019, 00:47   #18
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The old cr head has capability to reach 290-300 in stock form.
With porting and camshaft it will go over 400hp. Too much of a trouble in swapping heads ..not even sure is possible.
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Old January 9th, 2019, 14:32   #19
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It can be done....but its a drag. The old engines can in fact make excellent power. I really like the CUAA(and have done a ton of research on it), but they are just different enough, that the swap wouldnt be as easy as one would think. Are you looking for a particular benefit that the CUAA offers?
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Old January 10th, 2019, 09:14   #20
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the CUAA cams are not the same as the usa ones. and they dont have VVT...and in addition, they reduced swirl 50% as I recall.
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Old January 10th, 2019, 09:37   #21
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I know it says that the came are locked into the assembly, but they had to assemble it some how. the came were made independently as well as the casting/housing. there has to be a way of getting it apart.
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Old January 10th, 2019, 09:50   #22
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I know it says that the came are locked into the assembly, but they had to assemble it some how. the came were made independently as well as the casting/housing. there has to be a way of getting it apart.
The two halves of the head are likely chemically bonded. Some of these chemical bondings can be released with heat. How a guy would rebond them im unsure.
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Old January 10th, 2019, 10:34   #23
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I bet the modular cam assembly is pressed together somehow. Even if you could get it apart without damaging it, you might not be able to get it back together.
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Old January 10th, 2019, 10:50   #24
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http://pics3.tdiclub.com/data/517/820433_EA288.pdf
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Old January 10th, 2019, 10:59   #25
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https://www.ebay.de/itm/VW-Passat-Ti...-/253206149995
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Old January 10th, 2019, 12:55   #26
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Just not worth the trouble. You need to run the entire engine with electronics and every module needed for ecu to work. Why one would go that route is beyond my understanding. Too much work for nothing.

By the looks of it you can not take out the camshaft from the aluminum part which is 1 piece mould, machined ..camshaft pressed and and lobes positioned by cnc machine.

Just buy the car
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Old January 11th, 2019, 07:15   #27
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I remember seeing the "lobes pressed onto tubes" camshaft production method, interesting to see they've taken it a step further and pressed them together in a housing unit.

ETA: "interesting" in the "I never knew there was quite that much blood inside someone" kind of way.
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Old January 13th, 2019, 13:34   #28
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Now that setup DEFINITELY has one cam for intake, one for exhaust, unlike the North American EA288s.
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Old January 13th, 2019, 13:38   #29
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Yeah but you would need the head too!
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Old January 15th, 2019, 08:18   #30
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Yeah but you would need the head too!
Indeed!
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