Planning on rebuilding the engine soon (Evo VIII) and while I'm in there are the darton sleeves worth installing for the added insurance. It will be an 86mm bore.
My planned C/R is 9:1 and anywhere between 30-40 psi of boost.

Technical info welcome and person experience is a plus.

 

The 4G63 can take pretty much anything you can throw at it without any darton sleeves or anything... It's a different story with the 4B11(evo x), but the 4G can take it

 

^^^ what he said

 

^ what he said, why mess with a good thing.
As far as the sleeves go it depends on who's doing the sleeving. I had it done in my C5 by MTI of houston, they did not know what they were doing, the sleeves dropped !!!

 

When the economy was good a shops had money to spend and we were still learning evo's,, AMS , Buschur and some other shops were running 40-50 psi on the 4g63

 

Thanks fellas, guess I'll be putting my money towards something else.