Originally Posted by MoBiX
I can get both a B18B or a B20B for $750, the reason for the B20B, I like the torque.
You can resleeve the B18B and bore it to the same bore as the B20. You can find a B18B for MUCH cheaper than $750.
Originally Posted by BoostedITR41
the B20 head is very restrictive.....go B18 and you will love it.....a stock motor will hold 20psi if you get a good aftermarket head gasket(inline pro) but needs tuned right.
you also have to look at the turbo you are goin to use...PSI doesn't break things so much as HP....look at the HP goal and the turbo used and you will have a better idea of what you need
Stock motor CAN hold 20psi, yes...but not many people have successfully done it. Most of them end up with rods through the block.
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