Rtv?

well i'm changing out all the gaskets in my engine(hope it fixes the coolant leak(if not thats a $100 loss)....were should i apply RTV silicone(in addition to the gasket)

also what are the torqing down numbers on an aluminun intake?


thanks

 

Apply RTV to the bolts that protrude into the coolant jackets. Sticking a phillips screw driver into these holes will tell you which are blind & which go into the coolant jackets. Small block aluminum intake bolt torque is 20-25 ft/lbs. Start with the middle bolts and work outward, going from one side to the other. I do the whole sequence 3-4 times then go back an hour or more later and recheck all. It usually takes this till the gaskets fully compress.

 

on the treads or around the bolt?

 

on the threads

 

I have better luck with Permatex #2.

 

I use ARP thread sealer on the bolts.

 

I have used Lock-tite "Gasket Maker" with complete satisfaction. I have even sealed a dirty bolt on a transmission - below the level of the fluid without draining it. Even through the dirt and oil Gasket Maker sealed the threads and bolt head. It completely stopped the leak.