Hey guys, I am looking for advice, suggestions, recommendations etc about an Ej207 block ej205 head hybrid.
I own a 2005 Wrx with Cobb intake/box/post maf, Perrin turbo inlet, Samco IC hoses, Cobb up, Cobb dp, Cobb AP stage2 93 oct. Stock Ej205 with 126k miles, probably 100k miles as "stage 2".
I am looking replace/build the block before going stage 3 with Sti Vf__ turbo (and all supporting mods).
I would prefer to stay 2.0l and non avcs for now. I do not want to go Ej25_ or any avcs heads. As close to stock ej205 compression as possible would be preferred.
So, I was thinking up tracking down a good Ej207 (v7 or v8???) and keeping the stock non-avcs ej205 heads.
What is the best way to go about this as far as strength/reliability go? Stock v7 ej207 short block with stock ej205 heads? Stock v8 ej207 short block with stock 205 heads? v7 207 block with v8 or 205 pistons? v8 block with v7 or 205 pistons?
I know there is no power "gains" by going ej207 and 205 heads, just stronger bottom end (block), which is EXACTLY what I want. But not sure the best way to go about this. Would stock 207 block with stock 205 heads work with my 2005 Wrx ecu (with appropriate ots map)? Or would the compression be too high meaning custom tune? Would 205 pistons in a 207 block work with my ecu with appropriate ots map? Or are 207 pistons much stronger than 205 pistons making that pointless? Plz help me on this.