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VW/Audi 07K (2.5L 20V I5) Swap Thread

 
Old 04-16-2019, 03:15 PM
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Originally Posted by Dash01 View Post
Suppose one wanted to "make do" with only, say, 300 HP on an O7K engine swap: Which of the various 07K engines from VW or Audi would entail the least work and expense and most reliability?
I would look for an 08-10 engine. Mine is an 08 Jetta engine. After 07 gives you upgraded timing chain, before 2011 gives you a simpler oil pump.
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Old 04-16-2019, 03:33 PM
  #1112  
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With the intake manifold Alan is having made, you'll be close to 215 hp already...
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Old 04-16-2019, 03:45 PM
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Originally Posted by hinton View Post
I would look for an 08-10 engine. Mine is an 08 Jetta engine. After 07 gives you upgraded timing chain, before 2011 gives you a simpler oil pump.
Good. Thanks. I'm looking to optimize such a longterm project by seeking those options which give the most bang for the life cycle buck. So, it may be that year X 07K engine comes with, say, a stock VW turbo and matching exhaust manifold which works well in a Porsche 951 swap. Such setup may cost a bit more going in, but then may save undue search, delay, reliability, and expense for modded aftermarket parts.

In other words, I'm looking for a good sweet spot in the 07K swap scheme which would be most affordable and reliable going in, yet still be cheaper than maintaining the 951 engine already into its 4th decade.
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Old 04-16-2019, 04:31 PM
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Originally Posted by Dash01 View Post
Suppose one wanted to "make do" with only, say, 300 HP on an O7K engine swap: Which of the various 07K engines from VW or Audi would entail the least work and expense and most reliability?
At 300 hp, I don't think you'll need to worry about fitting a forged crank, so for better reliability I'd vote for one of the later engines with the improved timing chain design. Engine code CBUA or CBTA.
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Old 04-18-2019, 05:36 PM
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Old 04-20-2019, 10:56 AM
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I just realized none of the text came through the other day . I picked up my slave cylinder this week since the supplier was down to 3 in stock at a super low price . This is a factory unit as well . One part at a time ,,,,,,
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Old 04-21-2019, 11:10 PM
  #1117  
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Finally jumped on a Gallardo manifold since everyone is talking about it now I really should've bought one years ago when I first thought of it, but it wasn't too much more expensive than they were back then. I think Damien grabbed the cheap one I had been watching forever.
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Old 04-23-2019, 07:29 PM
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Originally Posted by alxdgr8 View Post
Finally jumped on a Gallardo manifold since everyone is talking about it now I really should've bought one years ago when I first thought of it, but it wasn't too much more expensive than they were back then. I think Damien grabbed the cheap one I had been watching forever.
I had to “make an offer” on multiple different ones to get it below $400 shipped, which was my ceiling.
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Old 04-23-2019, 10:01 PM
  #1119  
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Originally Posted by hinton View Post
I had to “make an offer” on multiple different ones to get it below $400 shipped, which was my ceiling.
Yeah same here. Should've bought the one that was at $250 that I was watching for like 3 years, doh.
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Old 04-23-2019, 10:33 PM
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So if you are contemplating this swap and you already have a chipped 951, then going the turbo route on one of these 5-cyl motors is the only way to go for more power. But if you are picking up a stock NA VW motor and then going with an aftermarket turbo, what engine management system would be the best?
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Old 04-23-2019, 11:10 PM
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Originally Posted by db9146 View Post
So if you are contemplating this swap and you already have a chipped 951, then going the turbo route on one of these 5-cyl motors is the only way to go for more power. But if you are picking up a stock NA VW motor and then going with an aftermarket turbo, what engine management system would be the best?
That is a topic of debate and personal preference. As long as you stick with a reputable brand you should be fine.

With that being said, Alan and I have teamed up with Performance Electronics for the ECU this kit is developed around. We will offer the PE3-8400 ECU and a swap harness, as well as their wideband sensor and controller.
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Old 04-26-2019, 10:21 AM
  #1122  
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PS kit fits great!

Do we know what size fittings we need for this to hook up to the rack? Or did I miss that somewhere... I know I could probably take it to the parts store and just ask, but ordering stuff online is sooo much cheaper and easier!
Also if I were not resourceful at all and wanted quick information, where would I look for a rack rebuild/re-seal kit, or is that even worth it? Since the engine will be out anyways, is that something I should think about tackling?


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Old 04-28-2019, 01:00 AM
  #1123  
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My brake master is leaking like crazy and despite my best attempts to stop it I think it needs replacing. I was looking at maybe going with a pedal box to just replace the whole lot of aging parts.

That got me thinking, if we intend to go with the PE ecu and want to utilize features like launch control and flat floor shifting, do we need to utilize a drive by wire throttle body and pedal setup?

OBP pedal boxes have a DBW option with a potentiometer and I saw on Ebay that some of the vr6 throttle bodys are DBW. Would those parts be compatible with the intake design and ecu?
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Old 04-28-2019, 10:28 AM
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The later VR6 throttle body uses the same bolt pattern . It is like most drive by wire and has 6 wires operating it . I can’t comment on the PE part as I have no background with that platform .
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Old 04-29-2019, 11:05 AM
  #1125  
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Originally Posted by RoyaleWithCheese View Post
My brake master is leaking like crazy and despite my best attempts to stop it I think it needs replacing. I was looking at maybe going with a pedal box to just replace the whole lot of aging parts.

That got me thinking, if we intend to go with the PE ecu and want to utilize features like launch control and flat floor shifting, do we need to utilize a drive by wire throttle body and pedal setup?

OBP pedal boxes have a DBW option with a potentiometer and I saw on Ebay that some of the vr6 throttle bodys are DBW. Would those parts be compatible with the intake design and ecu?
Why not use the stock 07K TB if you want DBW? PE does support DBW; they just need to get the details worked out on driving the 07K TB specifically. It's something we plan to do with them, but lower priority than getting the wire harness and ecu tuning done with the cable TB.

Also, I'm not sure that DBW is necessary to use those features (flat shift etc), since the ECU can just cut ignition and/or fuel even though your foot will be holding the TB wide open.

Last edited by vt951; 04-29-2019 at 11:23 AM.
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