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Old 01-16-2005, 04:13 PM   #1
CUNNINGHAM
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Default EJ25D internals fit EJ257

Does anyone know if the 1998 DOHC PhaseI internals will fit into a 2004 EJ257? I am thinking about buying a sti block and installing all the leftovers I have from a old motor. Pauter rods and JE piston. I think it should work if I swap everything, but I am not so sure the crank will work because of the center thrust bearing versus the end thrust. Please help.
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Old 01-16-2005, 10:09 PM   #2
RallyColtTurbo
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I believe that Phase 1 2.5 Rod jounals are smaller than Phase 2 rod jounals. I wanna say 48mm to 52 mm.

Jess
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Old 01-17-2005, 07:22 AM   #3
CUNNINGHAM
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yes I know thats is why I will need to use the phase I crank. I bought a used 2004 STI block and I am going to test fit it all to find out What will fit for sure.
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Old 01-17-2005, 11:04 AM   #4
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Quote:
Originally Posted by CUNNINGHAM
yes I know thats is why I will need to use the phase I crank. I bought a used 2004 STI block and I am going to test fit it all to find out What will fit for sure.
I don't know if the crank will work in the block, but man....it would be one sweet thing to discover that it does! Do post the results of your test fit!!!!

I have a feeling that you may not be able to use them all togeter and will need to sell off the rods and crank for at least a phaseII crank and rods. The pistons should go in without any drama.....


Jay Storm
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Old 01-17-2005, 01:28 PM   #5
scoobydorift
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storm is right...i belive that the phaseI crank will not work in the Phase2 block.
Rick
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Old 01-17-2005, 09:12 PM   #6
CUNNINGHAM
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Well, Here is the deal I can make them fit if I mechine the block, or I can machine the STI crank to fit my rods. I have decided to use the STI crank it stroke it out to a 2.8L. I feel this will alow me to at least use my rods and make some killer power
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Old 01-18-2005, 01:35 AM   #7
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You go......!

Post results!


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Old 01-18-2005, 01:01 PM   #8
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woot woot. if you decide to do this keep us informed please!!
Rick
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Old 01-18-2005, 09:21 PM   #9
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2.8L 4 cyl??!!!!

I know it's been done before, but everytime I see a number like that...i mean... torque...
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Old 01-18-2005, 09:31 PM   #10
CUNNINGHAM
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I spoke with JE who sent me this:

Douglas,
No problem to make these for you....We can make an EJ25 piston any way
you want...

A set of 4 custom Subaru Stroker JE 2618 Alloy forged pistons with wrist
pins and JE Rings is $650 per set and takes approx 3-3 1/2 weeks to
build. Any bore size or compression ratio you want...
Add $90 for Total-Seal Gapless rings

Thanks...Steve

Please give us a call with any questions.

I also spoke to crawford engine who won't sell a full stroker kit over the counter but will build it for me.$$$$$$$

Jun wants 6000.00 for there kit.

A local race engine builder said he can grind the crank to a mid 80's stroke and give me the specs to order the pistons.

I should have the block in a few day's and I should know buy next week what will happen.
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Old 01-19-2005, 08:40 PM   #11
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Setting the wrist pins onto it may be a little tricky. Because of the difference in rod length and wrist pin height on the pistons, between the EJ251 and EJ257, the feed hole in the side of the block is slightly moved. It should be doable, just a little tricky with you having to move the crank a little of of TDC to get the hole to line up with the rod...
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Old 01-19-2005, 09:02 PM   #12
CUNNINGHAM
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Installing the pistons will the same as usual. Just turn the crank till the line up to the hole. The way I do it, I install two rods and pistons into one side the place the crank in and install the two end caps. I then bolt the block together and spin the crank till the rods line up to the pistons and then install the clips.
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