Impeller housing bolts

[seawallkid]

Went to replace my impeller ( alpha one gen 11 ) two of the four water pump housing bolts broke. Then of course I drilled them and tried using a easy out to remove and the easy out broke in the bolt. I am going to drill and tap two new bolt holes. My question is, the bolts are not stainless so I am thinking replace them with stainless. Is there a reason they are not? What should I use for the new bolts???

 

[I/O WALDO]

Re: Impeller housing bolts

Factory bolts were stainless.

 

[Don S]

Re: Impeller housing bolts

The bolts are staineless like waldo stated. The problem is, that stainless in aluminum corrodes.<br />In the future, heat would have prevented the bolt breakage.