My buddys got a older model si Lude with a B21 in it... i was wondering how good that motor is to build on and if it would be better to swap it for an H22 or something....... let me know... Thanks H-T

 

Swap in the H-22! The b21 is good if you built it but a built h22 is better. The h22 swap is really expensive however so if he's just building a street car you could stay with the b21 it's lighter by a little bit too. Parts for it are really hard to find however. There are rods and pistons available but no one makes turbo manifolds for them right now there was several group buys on them though so you might be able to get one through ebay or preludepower classifieds.

 

cool thanks bro..