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Old 03-02-2008, 01:30 PM   #1
greenspeed
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Default My ej25d to phase 2 swap- need help asap

I blew the engine in my 98 legacy and found a buddy with an 01 rs engine. I decided to do the swap using pretty much just the phase 2 short block. Here are my two main questions that I pretty much need to get solved asap. I am digging in to take out the engine off my legacy tomorrow afternoon...

Will my flywheel bolt to the 01 rs?

If I have to mill my heads on my legacy will the intake still fit?


Thanks ahead fo time...
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Old 03-02-2008, 01:41 PM   #2
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yes and yes
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Old 03-02-2008, 01:43 PM   #3
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Can't say on the flywheel, I don't know.

As for the heads about the most you want to take off is .010" (10 thousandths), and yes it will still fit. .010" is ~2-3 sheets of paper, not much. It is also a good idea to check the deck(where the heads bolt) on the block to see if it is also flat. Milling the heads wont do any good if the Block is not also flat, and can be the source of some repeated head gasket failures if over looked.
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Old 03-02-2008, 06:27 PM   #4
greenspeed
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I am actually going with a newer short block out of a running 01 rs...so I hope that the heads are straight and true and the decks good too...

Anyone know about what clearance should be with a straight edge on the heads? .010? or so?

thanks
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Old 03-02-2008, 07:19 PM   #5
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Just to clarify, the shortblock does not include the heads; a longblock includes the heads. So are you planning to use the SOHC heads or your old DOHC heads? If you're planning to use the SOHC heads, well, it ain't gonna work. The sensors and wiring aren't going to match up to your ECU and wiring harness from the DOHC engine.

You can put your DOHC heads and intake manifold on the P2 shortblock.

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Old 03-02-2008, 08:39 PM   #6
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I am using my DOHC heads...I am just using the short block of the SOHC phase 2
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Old 03-02-2008, 09:30 PM   #7
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Quote:
Originally Posted by greenspeed View Post
I am actually going with a newer short block out of a running 01 rs...so I hope that the heads are straight and true and the decks good too...

Anyone know about what clearance should be with a straight edge on the heads? .010? or so?

thanks

The heads need to be within +/- .002" flatness, The same goes for the block deck. Really they should be checked on a flat plate/mill... with with a dial indicator as a "straight edge" for anything other then the machining industry may have .010" runout in its self.
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Old 03-03-2008, 02:21 AM   #8
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the head are not larger than .002 using a brand new straight edge...I will have to wait on the disassembly of my phase 2 block to check the deck on that...but as for my legacy...I will post a new thread about that...
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