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EJ22 heads and EJ25 block.


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8 replies to this topic

#1 Tireman28

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Posted 06 December 2017 - 09:35 PM

I called delta cams and they can do a 230’ grind for my camshaft. I have a 2005 2.5 block and ported and polished 2.2 heads. What are yalls thoughts on the possible power output? Or has anyone done this?

#2 idosubaru

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Posted 06 December 2017 - 10:40 PM

probably depends whether it’s phase I or II EJ22 heads.

there were EJ compression calculators via excel floating around online which might be possible to know as well.

#3 GeneralDisorder

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Posted 07 December 2017 - 06:53 PM

Compression is way over 12:1 with phase one (90 to 98) heads. Not runable. Will pull timing like mad due to detonation issues and likely melt a piston.

 

Phase two (99 to 01) heads are the same as EJ25 heads. Compression will be basically stock. 

 

GD


Edited by GeneralDisorder, 07 December 2017 - 06:58 PM.


#4 Tireman28

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Posted 11 December 2017 - 09:44 PM

What’s your thoughts on using the ej25 cams n the ej22 heads? Or just use the 22 heads on the 25 block?

#5 GeneralDisorder

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Posted 12 December 2017 - 12:02 AM

Again we have to ask - phase one or two?

GD

#6 dfoyl

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Posted 12 December 2017 - 02:16 AM

EJ20 heads in a EJ25 (both phase 2 obviously, phase 1 will mean changing the intake to suit the phase 1 heads) is the common option used. Try to get the 2003+ EJ202 heads as they flow a little better.



#7 Tireman28

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Posted 12 December 2017 - 06:13 PM

GD the 22 is a 1993 legacy. How do I tell what phase?

#8 Bushwick

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Posted 12 December 2017 - 07:08 PM

If you changed pistons and/or ran thicker HG, and could get it closer to 10:1, that'd be a great street ratio. Would need premium gas 24/7.

 

Don't pick cams at random or off a shelf. Everything from curb weight, usable powerband, gearing, cr, etc. need to be factored for optimum benefits + driver expectations (i.e. talk with the rep and go custom grind). If it was a V8, I'd say favor a torque cam and sacrifice redline for excellent acceleration; for a 4 banger, you'll want more rpm, which needs decent valvesprings, etc. and might be an obese dog for DD unless you like winding it out constantly.



#9 GeneralDisorder

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Posted 13 December 2017 - 10:19 PM

You have to run 25D pistons AND thick head gaskets with those phase one heads. Compression will still be 10.6:1

 

GD






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