I let a friend borrow a sleeved b20 block for the fontana event and he crashed the car before the event. It ripped the motor mount out of the block on the driver side the top one that has the 3 bolts. I was trying to get info and see what should I do? I think the block is trash cause once you put incerts and stuff in there and start abusing the block they will strip out again. The shop said bring it in and they would push the sleeves out and install them in another block but the rest of my buddies saying the incerts will work. Whats you guys opinion other than im stupid for letting someone borrow such and expensive item. I've beat myself up enough for being so stupid it will never happen again I don't care if it cost me loosing a friend.

 

Sorry to hear about your block. Personally I wouldn't chance the inserts holding with any aluminum block. Once the damage is done it has weakened the block and you could have other unseen problems; stress fractures, cracks, metal fatigue etc. Why chance it? Thats my $0.02

 

My thoughts exactly. Thanks anymore advice out there?

 

Find an aluminum welder and have them build up where the bolt holes used to be, and drill and tap new ones.

 

Even if you do that what about the stress cracks you cant get to the middle of. I was thinking have then pull the sleeves out and install them into another block. Thats a good thought though but im sure that kind of heating would warp the block and cost extra money. Seems like im out of more money regardless of the situation so I might be better of trashing that block and get another one.

 

i dont see why its your problem, imo your buddy shoudl be buyingyou a new blcok with new sleeves and wathever else you had in there

 

Why can't you just re-tap the holes for larger bolts and then drill out the bracket to except the larger bolts. I think your making this harder then it really is and if you where to use a heli-coil that would also hold if installed properly.

 

What this guy said, but use Timeserts. I have them on my block. It's only putting out 340 whp, but they are holding no prob. If you don't want that block. Send me a pm

 

yeah it is not a problem for a machine shop to do. i have the same prob with my b18c with the same mount holes being stripped. i used a dye, penetrater, and developer to find if their were any stress cracks and i did not find any... dont worry about it, and get it welded, bored, then tapped!!!