How much boost can the B20 bottom end take???

 

12 is probably the max you would want to go with perfect tuning.

 

I was doing a search and came across this...I'm just curious on why you say that? Not doubtign your knowledge, just looking for details.

 

probably 12-13 psi its pretty much similar to a ls in many ways. That is probably where we are coming up with the specs to max boost. The main concern is the rod stroke ratio + the fuel

 

i've heard its very unhealthy boosting a stock B20 because of the connecting rods being just as thin as those found in a stock D16Y8

 

You should upgrade the rods and valves anyhow if your going for a b20 over a b18b. If you're spending more moeny on a b20 and even more money to change teh intake manifold so the engine fits why short change yourself at the end? If you're serious about making power then do it right the first time or pay the price.

 

I see...It looks cheaper to keep my B18b and build that up

 

The Sleeves will support 14 Intercooled PSI on a regular basis, and 20 Intercooled PSI for very short times...

This is with Rods\Pistons\Arp hardware on Stock Cylinder Walls. Remember, that B20 Sleeves are Siamesed and stronger than an LS or GSR.

The PSI Numbers come from Larry @ http://www.theoldone.com.
I know some of you are ENDYN Haters, but he has alot of Experience with B20s.

Suprdave