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Discussion Starter · #1 ·
So I'm doing a 257/SOHC heads hybrid build and seems I need the STi or any 2.5 turbo coolant crossover pipe. Anyone have a Subaru part number for this part? Or can I mod the 251 pipe? Thanks!
 

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Discussion Starter · #7 ·
No you can't they aren't the same size my buddy had the same issue

have you tried a wtb ad on nasioc someone on there would have now

And if I rember correctly a companie makes a really good one that flows better than stock

-crash
Ok, well seems that it is only a $120 part on subaruparts.com.
Still would rather find a used one for half that price, but if I cant find a used one in the next few days, Ill just get a new one.
After doing research, you can use the stock EJ251 pipe, and grind down and then plug the second breather on the STi block. But, that doesnt seem like such a good idea to me, as excessive pressure could build up, so I will just get the correct pipe.
 

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1998 Subaru Impreza RS
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On my build I just modified the factory crossover pipe(I have a 98RS). I plugged the extra engine breather and ran the stock crankcase breather/PCV setup. It forked just fine.
 
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