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Are shortblocks interchangeable


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Hey team I’m new to the game and want to rebuild my motor I have a 4th gen 2003 Legacy Gtb with the Ej20Y and am in need of a new block and am curious if I can use a Ej207 shortblock with everything else off my motor? Or what needs changed if anything?

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Yeah most people do a drop in 207 block as a replacement when the do a bearing on their stock block. 

 

The only thing that really matters is the compression ratio which will be different so you need to work that out before putting the heads and block together. The typical lower compression makes it a lot easier for these cars to make boost without knocking too.

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8 hours ago, Shibe said:

Slightly off topic but all these usernames look very familiar / follow a trend.. 🤔

all the cool usernames are taken? / these days imagination level is low?

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9 hours ago, Joker said:

all the cool usernames are taken? / these days imagination level is low?

Well that.. but also rings a bell with Bugeye01WRX and the other 234 accounts he made

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