I cannot help you for all of those questions, as I am tuned, but my B5244T5 swapped vR is using the B5244T5 head just fine!


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I did this swap and they only thing I had to change over was the oil pan and injectors. Runs like a champ.

I still need to get a Contrast tune though, just to make it better.

 

So the t5 engine just magically puts out 300 horses with an R ecu?

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it's not magic, its software. Just like the R motor can magically make more power with a tune.

 

Cylinder head is same.

It will work with current tune and fuel trims will adjust the fueling to be correct (less displacement).

If you’re talking about compression ratio then that would be the same as R engine at 8.5:1. If anything, it will be less snappy and responsive down low compared to larger displacement.

 

Stomish
Thought your engine install blew up. Did they make it right for you after all that $ spent?

 

Engine install nearly complete. Have been running into odd SNAFUs.

The crankcase breather box is different. The hose to the valve cover comes out in a different spot. I was able to use an S60R valve cover hose with the 2.4 breather box but it's a bit of a stretch.

The turbo is identical in part number. The intake manifold, however, is "technically" different but the same casting number. There's a boss that is drilled on the P2R intake that is not drilled on the 2.4t intake.

The big thing, though, that required me to remove the engine again, is that I didn't realize that the flexplates are transmission-specific. The 2.4 flexplate will not work in a P2R if you have a TF80 trans, the bolt holes for the torque converter are the wrong size. You could drill them out, but then the bolt heads would be tightening against a raised stamping boss.