Okay I've sene this many times.

what can stock d16 sleeves handle?

what about when they are posted?

nathan

 

...

*Waits*

 

D series sleeve construction is the same as B series, and there are a few b-series pushing 4-500whp. The highest d-series I've ever seen was 375ish whp on stock sleeves. Pinning isnt going to stop it from cracking, its just a small re-assaurence. The sleeves can hold the power, the engine just has to be tuned perfect.